TY  - JOUR
AU  - Brodić, Nenad
AU  - Cvijetinović, Željko
AU  - Milenković, Milutin
AU  - Kovačević, Jovan
AU  - Stančić, Nikola
AU  - Mitrović, Momir
AU  - Mihajlović, Dragan
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2775
AB  - Numerous semi- and fully-automatic algorithms have been developed for individual tree detection from airborne laser-scanning data, but different rates of falsely detected treetops also accompany their results. In this paper, we proposed an approach that includes a machine learning based refinement step to reduce the number of falsely detected treetops. The approach involves the local maxima filtering and segmentation of the canopy height model to extract different segment level features used for the classification of treetop candidates. The study was conducted in a mixed temperate forest, predominantly deciduous, with a complex topography and an area size of 0.6 km × 4 km. The classification model’s training was performed by five machine learning approaches: Random Forest (RF), Extreme Gradient Boosting, Artificial Neural Network, the Support Vector
Machine, and Logistic Regression. The final classification model with optimal hyperparameters was adopted based on the best-performing classifier (RF). The overall accuracy (OA) and kappa coefficient (κ) obtained from the ten-fold cross validation for the training data were 90.4% and 0.808, respectively. The prediction of the test data resulted in an OA = 89.0% and a κ = 0.757. This indicates that the proposed method could be an adequate solution for the reduction of falsely detected treetops before tree crown segmentation, especially in deciduous forests.
PB  - MDPI
T2  - Remote Sensing, 2022, 14(21), 5345
T1  - Refinement of Individual Tree Detection Results Obtained from Airborne Laser Scanning Data for a Mixed Natural Forest
VL  - 14
DO  - 10.3390/rs14215345
ER  - 

@article{
author = "Brodić, Nenad and Cvijetinović, Željko and Milenković, Milutin and Kovačević, Jovan and Stančić, Nikola and Mitrović, Momir and Mihajlović, Dragan",
year = "2022",
abstract = "Numerous semi- and fully-automatic algorithms have been developed for individual tree detection from airborne laser-scanning data, but different rates of falsely detected treetops also accompany their results. In this paper, we proposed an approach that includes a machine learning based refinement step to reduce the number of falsely detected treetops. The approach involves the local maxima filtering and segmentation of the canopy height model to extract different segment level features used for the classification of treetop candidates. The study was conducted in a mixed temperate forest, predominantly deciduous, with a complex topography and an area size of 0.6 km × 4 km. The classification model’s training was performed by five machine learning approaches: Random Forest (RF), Extreme Gradient Boosting, Artificial Neural Network, the Support Vector
Machine, and Logistic Regression. The final classification model with optimal hyperparameters was adopted based on the best-performing classifier (RF). The overall accuracy (OA) and kappa coefficient (κ) obtained from the ten-fold cross validation for the training data were 90.4% and 0.808, respectively. The prediction of the test data resulted in an OA = 89.0% and a κ = 0.757. This indicates that the proposed method could be an adequate solution for the reduction of falsely detected treetops before tree crown segmentation, especially in deciduous forests.",
publisher = "MDPI",
journal = "Remote Sensing, 2022, 14(21), 5345",
title = "Refinement of Individual Tree Detection Results Obtained from Airborne Laser Scanning Data for a Mixed Natural Forest",
volume = "14",
doi = "10.3390/rs14215345"
}

Brodić, N., Cvijetinović, Ž., Milenković, M., Kovačević, J., Stančić, N., Mitrović, M.,& Mihajlović, D.. (2022). Refinement of Individual Tree Detection Results Obtained from Airborne Laser Scanning Data for a Mixed Natural Forest. in Remote Sensing, 2022, 14(21), 5345
MDPI., 14.
https://doi.org/10.3390/rs14215345

Brodić N, Cvijetinović Ž, Milenković M, Kovačević J, Stančić N, Mitrović M, Mihajlović D. Refinement of Individual Tree Detection Results Obtained from Airborne Laser Scanning Data for a Mixed Natural Forest. in Remote Sensing, 2022, 14(21), 5345. 2022;14.
doi:10.3390/rs14215345 .

Brodić, Nenad, Cvijetinović, Željko, Milenković, Milutin, Kovačević, Jovan, Stančić, Nikola, Mitrović, Momir, Mihajlović, Dragan, "Refinement of Individual Tree Detection Results Obtained from Airborne Laser Scanning Data for a Mixed Natural Forest" in Remote Sensing, 2022, 14(21), 5345, 14 (2022),
https://doi.org/10.3390/rs14215345 . .

TY  - JOUR
AU  - Kovačević, Jovan
AU  - Cvijetinović, Željko
AU  - Lakušić, Dmitar
AU  - Kuzmanović, Nevena
AU  - Šinžar-Sekulić, Jasmina
AU  - Mitrović, Momir
AU  - Stančić, Nikola
AU  - Brodić, Nenad
AU  - Mihajlović, Dragan
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2057
AB  - The inventory of woody vegetation is of great importance for good forest management. Advancements of remote sensing techniques have provided excellent tools for such purposes, reducing the required amount of time and labor, yet with high accuracy and the information richness. Sentinel-2 is one of the relatively new satellite missions, whose 13 spectral bands and short revisit time proved to be very useful when it comes to forest monitoring. In this study, the novel spatio-temporal classification framework for mapping woody vegetation from Sentinel-2 multitemporal data has been proposed. The used framework is based on the probability random forest classification, where temporal information is explicitly defined in the model. Because of this, several predictions are made for each pixel of the study area, which allow for specific spatio-temporal aggregation to be performed. The proposed methodology has been successfully applied for mapping eight potential forest and shrubby vegetation types over the study area of Serbia. Several spatio-temporal aggregation approaches have been tested, divided into two main groups: pixel-based and neighborhood-based. The validation metrics show that determining the most common vegetation type classes in the neighborhood of 5 × 5 pixels provides the best results. The overall accuracy and kappa coefficient obtained from five-fold cross validation of the results are 82.97% and 0.75, respectively. The corresponding producer’s accuracies range from 36.74% to 97.99% and user’s accuracies range from 46.31% to 98.43%. The proposed methodology proved to be applicable for mapping woody vegetation in Serbia and shows a potential to be implemented in other areas as well. Further testing is necessary to confirm such assumptions.
PB  - MDPI
T2  - Remote Sensing
T1  - Spatio-Temporal Classification Framework for Mapping Woody Vegetation from Multi-Temporal Sentinel-2 Imagery
IS  - 17
SP  - 2845
VL  - 12
DO  - https://doi.org/10.3390/rs12172845
ER  - 

@article{
author = "Kovačević, Jovan and Cvijetinović, Željko and Lakušić, Dmitar and Kuzmanović, Nevena and Šinžar-Sekulić, Jasmina and Mitrović, Momir and Stančić, Nikola and Brodić, Nenad and Mihajlović, Dragan",
year = "2020",
abstract = "The inventory of woody vegetation is of great importance for good forest management. Advancements of remote sensing techniques have provided excellent tools for such purposes, reducing the required amount of time and labor, yet with high accuracy and the information richness. Sentinel-2 is one of the relatively new satellite missions, whose 13 spectral bands and short revisit time proved to be very useful when it comes to forest monitoring. In this study, the novel spatio-temporal classification framework for mapping woody vegetation from Sentinel-2 multitemporal data has been proposed. The used framework is based on the probability random forest classification, where temporal information is explicitly defined in the model. Because of this, several predictions are made for each pixel of the study area, which allow for specific spatio-temporal aggregation to be performed. The proposed methodology has been successfully applied for mapping eight potential forest and shrubby vegetation types over the study area of Serbia. Several spatio-temporal aggregation approaches have been tested, divided into two main groups: pixel-based and neighborhood-based. The validation metrics show that determining the most common vegetation type classes in the neighborhood of 5 × 5 pixels provides the best results. The overall accuracy and kappa coefficient obtained from five-fold cross validation of the results are 82.97% and 0.75, respectively. The corresponding producer’s accuracies range from 36.74% to 97.99% and user’s accuracies range from 46.31% to 98.43%. The proposed methodology proved to be applicable for mapping woody vegetation in Serbia and shows a potential to be implemented in other areas as well. Further testing is necessary to confirm such assumptions.",
publisher = "MDPI",
journal = "Remote Sensing",
title = "Spatio-Temporal Classification Framework for Mapping Woody Vegetation from Multi-Temporal Sentinel-2 Imagery",
number = "17",
pages = "2845",
volume = "12",
doi = "https://doi.org/10.3390/rs12172845"
}

Kovačević, J., Cvijetinović, Ž., Lakušić, D., Kuzmanović, N., Šinžar-Sekulić, J., Mitrović, M., Stančić, N., Brodić, N.,& Mihajlović, D.. (2020). Spatio-Temporal Classification Framework for Mapping Woody Vegetation from Multi-Temporal Sentinel-2 Imagery. in Remote Sensing
MDPI., 12(17), 2845.
https://doi.org/https://doi.org/10.3390/rs12172845

Kovačević J, Cvijetinović Ž, Lakušić D, Kuzmanović N, Šinžar-Sekulić J, Mitrović M, Stančić N, Brodić N, Mihajlović D. Spatio-Temporal Classification Framework for Mapping Woody Vegetation from Multi-Temporal Sentinel-2 Imagery. in Remote Sensing. 2020;12(17):2845.
doi:https://doi.org/10.3390/rs12172845 .

Kovačević, Jovan, Cvijetinović, Željko, Lakušić, Dmitar, Kuzmanović, Nevena, Šinžar-Sekulić, Jasmina, Mitrović, Momir, Stančić, Nikola, Brodić, Nenad, Mihajlović, Dragan, "Spatio-Temporal Classification Framework for Mapping Woody Vegetation from Multi-Temporal Sentinel-2 Imagery" in Remote Sensing, 12, no. 17 (2020):2845,
https://doi.org/https://doi.org/10.3390/rs12172845 . .

TY  - CONF
AU  - Brodić, Nenad
AU  - Milić, Stevan
AU  - Mitrović, Momir
AU  - Cvijetinović, Željko
AU  - Mihajlović, Dragan
AU  - Kovačević, Jovan
AU  - Stančić, Nikola
PY  - 2019
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1966
AB  - The methodology for modeling the distribution of certain air pollutant for the city of Belgrade in winter 2015 is presented in the paper. Land Use Regression (LUR) was used for modeling and visualization of spatial distribution of air pollution concentration in the city. NO2 concentrations were sampled at 46 locations, and predictive variables were calculated based on the road category, traffic intensity, demographic data, altitude, household furnaces and land use. These variables were calculated using buffers of different sizes. Linear regressions between NO2 and predictive spatial variables were calculated. Afterwards, the most significant predictors were used for multivariate regression model. Quality of the final model was checked using measurement available at certain locations. The RMSE of 9.8 μg/m³ and the coefficient of determination (R2) of 0.6 were obtained. These results indicate that traffic has the largest impact on air pollution concentration especially near the major roads. Prediction should help in deciding which air protection measures are to be taken in order to preserve and improve the city environment. The lack of data that are collected by using quite a few sensor stations is still rather limiting for the successful monitoring of air pollution in the city of Belgrade.
PB  - University of Belgrade - Faculty of Civil Engineering
C3  - 4th BAB International Conference Decoding Balkan: Architecture, Urbanism, Planning, Belgrade, 2019
T1  - Monitoring Air Pollution Using GIS: Case Study for the City of Belgrade
EP  - 25
SP  - 18
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1966
ER  - 

@conference{
author = "Brodić, Nenad and Milić, Stevan and Mitrović, Momir and Cvijetinović, Željko and Mihajlović, Dragan and Kovačević, Jovan and Stančić, Nikola",
year = "2019",
abstract = "The methodology for modeling the distribution of certain air pollutant for the city of Belgrade in winter 2015 is presented in the paper. Land Use Regression (LUR) was used for modeling and visualization of spatial distribution of air pollution concentration in the city. NO2 concentrations were sampled at 46 locations, and predictive variables were calculated based on the road category, traffic intensity, demographic data, altitude, household furnaces and land use. These variables were calculated using buffers of different sizes. Linear regressions between NO2 and predictive spatial variables were calculated. Afterwards, the most significant predictors were used for multivariate regression model. Quality of the final model was checked using measurement available at certain locations. The RMSE of 9.8 μg/m³ and the coefficient of determination (R2) of 0.6 were obtained. These results indicate that traffic has the largest impact on air pollution concentration especially near the major roads. Prediction should help in deciding which air protection measures are to be taken in order to preserve and improve the city environment. The lack of data that are collected by using quite a few sensor stations is still rather limiting for the successful monitoring of air pollution in the city of Belgrade.",
publisher = "University of Belgrade - Faculty of Civil Engineering",
journal = "4th BAB International Conference Decoding Balkan: Architecture, Urbanism, Planning, Belgrade, 2019",
title = "Monitoring Air Pollution Using GIS: Case Study for the City of Belgrade",
pages = "25-18",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1966"
}

Brodić, N., Milić, S., Mitrović, M., Cvijetinović, Ž., Mihajlović, D., Kovačević, J.,& Stančić, N.. (2019). Monitoring Air Pollution Using GIS: Case Study for the City of Belgrade. in 4th BAB International Conference Decoding Balkan: Architecture, Urbanism, Planning, Belgrade, 2019
University of Belgrade - Faculty of Civil Engineering., 18-25.
https://hdl.handle.net/21.15107/rcub_grafar_1966

Brodić N, Milić S, Mitrović M, Cvijetinović Ž, Mihajlović D, Kovačević J, Stančić N. Monitoring Air Pollution Using GIS: Case Study for the City of Belgrade. in 4th BAB International Conference Decoding Balkan: Architecture, Urbanism, Planning, Belgrade, 2019. 2019;:18-25.
https://hdl.handle.net/21.15107/rcub_grafar_1966 .

Brodić, Nenad, Milić, Stevan, Mitrović, Momir, Cvijetinović, Željko, Mihajlović, Dragan, Kovačević, Jovan, Stančić, Nikola, "Monitoring Air Pollution Using GIS: Case Study for the City of Belgrade" in 4th BAB International Conference Decoding Balkan: Architecture, Urbanism, Planning, Belgrade, 2019 (2019):18-25,
https://hdl.handle.net/21.15107/rcub_grafar_1966 .

TY  - JOUR
AU  - Mitrović, Momir
AU  - Mihajlović, Dragan
AU  - Cvijetinović, Željko
AU  - Brodić, Nenad
AU  - Milić, Stevan
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1054
T2  - Građevinski kalendar
T1  - Primena bespilotnih letelica za snimanje građevinskih objekata
VL  - 48
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1054
ER  - 

@article{
author = "Mitrović, Momir and Mihajlović, Dragan and Cvijetinović, Željko and Brodić, Nenad and Milić, Stevan",
year = "2016",
journal = "Građevinski kalendar",
title = "Primena bespilotnih letelica za snimanje građevinskih objekata",
volume = "48",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1054"
}

Mitrović, M., Mihajlović, D., Cvijetinović, Ž., Brodić, N.,& Milić, S.. (2016). Primena bespilotnih letelica za snimanje građevinskih objekata. in Građevinski kalendar, 48.
https://hdl.handle.net/21.15107/rcub_grafar_1054

Mitrović M, Mihajlović D, Cvijetinović Ž, Brodić N, Milić S. Primena bespilotnih letelica za snimanje građevinskih objekata. in Građevinski kalendar. 2016;48.
https://hdl.handle.net/21.15107/rcub_grafar_1054 .

Mitrović, Momir, Mihajlović, Dragan, Cvijetinović, Željko, Brodić, Nenad, Milić, Stevan, "Primena bespilotnih letelica za snimanje građevinskih objekata" in Građevinski kalendar, 48 (2016),
https://hdl.handle.net/21.15107/rcub_grafar_1054 .

TY  - JOUR
AU  - Mitrović, Momir
AU  - Mihajlović, Dragan
AU  - Cvijetinović, Željko
AU  - Brodić, Nenad
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/681
AB  - Methods for application of digital photogrammetry for building surveying technical documentation for building constructions are considered in the paper. Based on our own and world-wide experiences, procedure for the production of surveying technical documentation in completely digital form is presented in the paper. The procedure of making technical documentation is divided in two logical phases. The first one is comprised of photographic recording, required field measurements and of making archive documentation. The second phase is comprised of making detailed geometric documentation, such as: precise digital orthophoto, 2D, 2.5D or 3D object model and the like, all in digital form. Considering that this phase is the most complex and the most expensive part of making technical documentation, it is not compulsory, but optional, i.e. if needed.
AB  - U ovom radu se razmatraju načini primene digitalne fotogrametrije za potrebe formiranja geodetsko-tehničke dokumentacije za objekte visokogradnje. Na osnovu svetskih i sopstvenih iskustava u radu daje se prikaz procedure za izradu geodetsko-tehničke dokumentacije u potpuno digitalnom obliku. Postupak izrade tehničke dokumentacije je podeljen u dve logične faze. Prva se sastoji iz fotogrametrijskog snimanja, neophodnih terenskih merenja i izrade arhivske dokumentacije. Drugu fazu čini izrada detaljne geometrijske dokumentacije kao što su: precizni digitalni ortofoto, 2D, 2.5D ili 3D model objekta i slično, sve u digitalnom obliku. S obzirom da predstavlja najsloženiji i najskuplji deo izrade tehničke dokumentacije, ova faza se ne radi obavezno, nego po potrebi.
PB  - Savez građevinskih inženjera Srbije, Beograd
T2  - Građevinski kalendar
T1  - Application of close-range photogrammetry for the production of the surveying technical documentation for building constructions
T1  - Primena bliskopredmetne fotogrametrije za potrebe izrade geodetsko-tehničke dokumentacije objekata visokogradnje
EP  - 162
IS  - 47
SP  - 131
UR  - https://hdl.handle.net/21.15107/rcub_grafar_681
ER  - 

@article{
author = "Mitrović, Momir and Mihajlović, Dragan and Cvijetinović, Željko and Brodić, Nenad",
year = "2015",
abstract = "Methods for application of digital photogrammetry for building surveying technical documentation for building constructions are considered in the paper. Based on our own and world-wide experiences, procedure for the production of surveying technical documentation in completely digital form is presented in the paper. The procedure of making technical documentation is divided in two logical phases. The first one is comprised of photographic recording, required field measurements and of making archive documentation. The second phase is comprised of making detailed geometric documentation, such as: precise digital orthophoto, 2D, 2.5D or 3D object model and the like, all in digital form. Considering that this phase is the most complex and the most expensive part of making technical documentation, it is not compulsory, but optional, i.e. if needed., U ovom radu se razmatraju načini primene digitalne fotogrametrije za potrebe formiranja geodetsko-tehničke dokumentacije za objekte visokogradnje. Na osnovu svetskih i sopstvenih iskustava u radu daje se prikaz procedure za izradu geodetsko-tehničke dokumentacije u potpuno digitalnom obliku. Postupak izrade tehničke dokumentacije je podeljen u dve logične faze. Prva se sastoji iz fotogrametrijskog snimanja, neophodnih terenskih merenja i izrade arhivske dokumentacije. Drugu fazu čini izrada detaljne geometrijske dokumentacije kao što su: precizni digitalni ortofoto, 2D, 2.5D ili 3D model objekta i slično, sve u digitalnom obliku. S obzirom da predstavlja najsloženiji i najskuplji deo izrade tehničke dokumentacije, ova faza se ne radi obavezno, nego po potrebi.",
publisher = "Savez građevinskih inženjera Srbije, Beograd",
journal = "Građevinski kalendar",
title = "Application of close-range photogrammetry for the production of the surveying technical documentation for building constructions, Primena bliskopredmetne fotogrametrije za potrebe izrade geodetsko-tehničke dokumentacije objekata visokogradnje",
pages = "162-131",
number = "47",
url = "https://hdl.handle.net/21.15107/rcub_grafar_681"
}

Mitrović, M., Mihajlović, D., Cvijetinović, Ž.,& Brodić, N.. (2015). Application of close-range photogrammetry for the production of the surveying technical documentation for building constructions. in Građevinski kalendar
Savez građevinskih inženjera Srbije, Beograd.(47), 131-162.
https://hdl.handle.net/21.15107/rcub_grafar_681

Mitrović M, Mihajlović D, Cvijetinović Ž, Brodić N. Application of close-range photogrammetry for the production of the surveying technical documentation for building constructions. in Građevinski kalendar. 2015;(47):131-162.
https://hdl.handle.net/21.15107/rcub_grafar_681 .

Mitrović, Momir, Mihajlović, Dragan, Cvijetinović, Željko, Brodić, Nenad, "Application of close-range photogrammetry for the production of the surveying technical documentation for building constructions" in Građevinski kalendar, no. 47 (2015):131-162,
https://hdl.handle.net/21.15107/rcub_grafar_681 .

TY  - CONF
AU  - Vojinović, Miloš
AU  - Cvijetinović, Željko
AU  - Mihajlović, Dragan
AU  - Mitrović, Momir
PY  - 2014
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1940
AB  - Paper deals with the specific LBS scenario – Fleet management (FM) and more specifically with systems for Automatic vehicle location (AVL). Well designed and implemented spatial data model for moving objects is one of the most significant elements of any AVL system. In practical applications the results of the latest scientific research are seldom applied, despite the fact that this area has been developing intensively for more than 20 years. The reasons for this are analysed in the paper. Short analysis of functionality of these systems is presented considering the impact of these functionalities on the implemented data model for moving objects and more specifically their impact on spatio-temporal component of the model. The paper especially reviews the possibility of using road networks as a basis for the representation of moving objects data models and a fact that these models are rarely used in practical applications. A solution overcoming this situation is proposed. The solution assumes transition from the system that is not based on road network to the system that is based on network. There are quite few research papers dealing with OSM data models. Therefore, a significant space in this paper is dedicated to the description of these models since OSM data can be valuable for this type of applications.
PB  - Research Group Cartography, Vienna University of Technology
C3  - Georg Gartner and Haosheng Huang (editors): Proceedings of the 11th International Symposium on Location-Based Services, Vienna, Austria, November 26-28, 2014
T1  - Data Models for Moving Objects in Road Networks – Implementation and Experiences
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1940
ER  - 

@conference{
author = "Vojinović, Miloš and Cvijetinović, Željko and Mihajlović, Dragan and Mitrović, Momir",
year = "2014",
abstract = "Paper deals with the specific LBS scenario – Fleet management (FM) and more specifically with systems for Automatic vehicle location (AVL). Well designed and implemented spatial data model for moving objects is one of the most significant elements of any AVL system. In practical applications the results of the latest scientific research are seldom applied, despite the fact that this area has been developing intensively for more than 20 years. The reasons for this are analysed in the paper. Short analysis of functionality of these systems is presented considering the impact of these functionalities on the implemented data model for moving objects and more specifically their impact on spatio-temporal component of the model. The paper especially reviews the possibility of using road networks as a basis for the representation of moving objects data models and a fact that these models are rarely used in practical applications. A solution overcoming this situation is proposed. The solution assumes transition from the system that is not based on road network to the system that is based on network. There are quite few research papers dealing with OSM data models. Therefore, a significant space in this paper is dedicated to the description of these models since OSM data can be valuable for this type of applications.",
publisher = "Research Group Cartography, Vienna University of Technology",
journal = "Georg Gartner and Haosheng Huang (editors): Proceedings of the 11th International Symposium on Location-Based Services, Vienna, Austria, November 26-28, 2014",
title = "Data Models for Moving Objects in Road Networks – Implementation and Experiences",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1940"
}

Vojinović, M., Cvijetinović, Ž., Mihajlović, D.,& Mitrović, M.. (2014). Data Models for Moving Objects in Road Networks – Implementation and Experiences. in Georg Gartner and Haosheng Huang (editors): Proceedings of the 11th International Symposium on Location-Based Services, Vienna, Austria, November 26-28, 2014
Research Group Cartography, Vienna University of Technology..
https://hdl.handle.net/21.15107/rcub_grafar_1940

Vojinović M, Cvijetinović Ž, Mihajlović D, Mitrović M. Data Models for Moving Objects in Road Networks – Implementation and Experiences. in Georg Gartner and Haosheng Huang (editors): Proceedings of the 11th International Symposium on Location-Based Services, Vienna, Austria, November 26-28, 2014. 2014;.
https://hdl.handle.net/21.15107/rcub_grafar_1940 .

Vojinović, Miloš, Cvijetinović, Željko, Mihajlović, Dragan, Mitrović, Momir, "Data Models for Moving Objects in Road Networks – Implementation and Experiences" in Georg Gartner and Haosheng Huang (editors): Proceedings of the 11th International Symposium on Location-Based Services, Vienna, Austria, November 26-28, 2014 (2014),
https://hdl.handle.net/21.15107/rcub_grafar_1940 .

TY  - CONF
AU  - Brodić, Nenad
AU  - Cvijetinović, Željko
AU  - Milenković, Milutin
AU  - Dorninger, Peter
AU  - Mitrović, Momir
PY  - 2014
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1176
AB  - Ground filtering of point cloud is the primary step required for Digital Terrain Model (DTM) generation. The procedure is especially interesting for forested areas, since LiDAR systems can measure terrain elevation under vegetation cover with a high level of penetration. This work analyzes the potential of ALS data ground filtering for area of an active landslide. The results of ALS filtering, for example, may improve geomorphological and motiondetection studies. ALS data was collected during flight campaign 2011 under leaf-off conditions for Doren region, Vorarlberg, Western Austria. In this area, non-ground objects are mostly low vegetation such as shrubs, small trees etc. The vegetation is more dense in lower part of the landslide where erosion is smaller. Vegetation points can be removed based on the hypothesis that these are significantly higher than their neighboring points. However, in case of steep terrain, ground points may have the same heights as vegetation points, and thus, local slope should be considered. Also, if terrain roughness increases, the classification may become even more complex. Software system OPALS (Orientation and Processing of Airborne Laser Scanning data, Vienna University of Technology) was used for processing the ALS data. Labeling ground points has been made using physical and geometrical attributes (parameters) of ALS points. Also additional attributes were calculated in order to improve extraction. Since bare ground surface is usually smooth and continuous unlike vegetation, standard deviation of local elevations was used as roughness measure to differentiate these surfaces. EchoRatio (ER) was adopted as a measure of surface penetrability, while number of echoes and differentiation between echoes (EchoNumber) were also deployed in filtering. Since the ground points are measurements from bare-earth that are usually the lowest surface features in a local area, normalized height was defined as a rank of neighboring points. Additionally, a so-called openness parameter was used as a convexity/concavity measure of surface. All of the mentioned point attributes have been combined in a decision tree in order to extract bare ground points. Based on a preliminary analysis, it is noted that implemented filtering procedure has difficulties with surfaces with rough terrain or steep relief. There is an assumption for lack of ground points in areas with dense vegetation that reduced the penetration of laser beams to the ground (lower part of a landslide). Also, points representing low vegetation were often labeled as ground points. Procedure produced holes in point cloud which demanded appropriate interpolation methods to be applied.
C3  - EGU General Assembly 2014, held 27 April - 2 May, 2014 in Vienna, Austria
T1  - Airborne Laser Scanning (ALS) point cloud ground filtering for area of an active landslide (Doren, Western Austria)
EP  - 15341
VL  - 16
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1176
ER  - 

@conference{
author = "Brodić, Nenad and Cvijetinović, Željko and Milenković, Milutin and Dorninger, Peter and Mitrović, Momir",
year = "2014",
abstract = "Ground filtering of point cloud is the primary step required for Digital Terrain Model (DTM) generation. The procedure is especially interesting for forested areas, since LiDAR systems can measure terrain elevation under vegetation cover with a high level of penetration. This work analyzes the potential of ALS data ground filtering for area of an active landslide. The results of ALS filtering, for example, may improve geomorphological and motiondetection studies. ALS data was collected during flight campaign 2011 under leaf-off conditions for Doren region, Vorarlberg, Western Austria. In this area, non-ground objects are mostly low vegetation such as shrubs, small trees etc. The vegetation is more dense in lower part of the landslide where erosion is smaller. Vegetation points can be removed based on the hypothesis that these are significantly higher than their neighboring points. However, in case of steep terrain, ground points may have the same heights as vegetation points, and thus, local slope should be considered. Also, if terrain roughness increases, the classification may become even more complex. Software system OPALS (Orientation and Processing of Airborne Laser Scanning data, Vienna University of Technology) was used for processing the ALS data. Labeling ground points has been made using physical and geometrical attributes (parameters) of ALS points. Also additional attributes were calculated in order to improve extraction. Since bare ground surface is usually smooth and continuous unlike vegetation, standard deviation of local elevations was used as roughness measure to differentiate these surfaces. EchoRatio (ER) was adopted as a measure of surface penetrability, while number of echoes and differentiation between echoes (EchoNumber) were also deployed in filtering. Since the ground points are measurements from bare-earth that are usually the lowest surface features in a local area, normalized height was defined as a rank of neighboring points. Additionally, a so-called openness parameter was used as a convexity/concavity measure of surface. All of the mentioned point attributes have been combined in a decision tree in order to extract bare ground points. Based on a preliminary analysis, it is noted that implemented filtering procedure has difficulties with surfaces with rough terrain or steep relief. There is an assumption for lack of ground points in areas with dense vegetation that reduced the penetration of laser beams to the ground (lower part of a landslide). Also, points representing low vegetation were often labeled as ground points. Procedure produced holes in point cloud which demanded appropriate interpolation methods to be applied.",
journal = "EGU General Assembly 2014, held 27 April - 2 May, 2014 in Vienna, Austria",
title = "Airborne Laser Scanning (ALS) point cloud ground filtering for area of an active landslide (Doren, Western Austria)",
pages = "15341",
volume = "16",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1176"
}

Brodić, N., Cvijetinović, Ž., Milenković, M., Dorninger, P.,& Mitrović, M.. (2014). Airborne Laser Scanning (ALS) point cloud ground filtering for area of an active landslide (Doren, Western Austria). in EGU General Assembly 2014, held 27 April - 2 May, 2014 in Vienna, Austria, 16.
https://hdl.handle.net/21.15107/rcub_grafar_1176

Brodić N, Cvijetinović Ž, Milenković M, Dorninger P, Mitrović M. Airborne Laser Scanning (ALS) point cloud ground filtering for area of an active landslide (Doren, Western Austria). in EGU General Assembly 2014, held 27 April - 2 May, 2014 in Vienna, Austria. 2014;16:null-15341.
https://hdl.handle.net/21.15107/rcub_grafar_1176 .

Brodić, Nenad, Cvijetinović, Željko, Milenković, Milutin, Dorninger, Peter, Mitrović, Momir, "Airborne Laser Scanning (ALS) point cloud ground filtering for area of an active landslide (Doren, Western Austria)" in EGU General Assembly 2014, held 27 April - 2 May, 2014 in Vienna, Austria, 16 (2014),
https://hdl.handle.net/21.15107/rcub_grafar_1176 .

TY  - CONF
AU  - Šoškić, Mladen
AU  - Cvijetinović, Željko
AU  - Mihajlović, Dragan
AU  - Mitrović, Momir
PY  - 2011
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/3333
AB  - Significant innovations and improvements in the technologies for spatial data acquisition and management data
have emerged in the last few decades. Introduction of GPS and the technology of GIS and digital photogrammetry in
surveying practice are definitely the most important ones. In spite of this, during the last few decades there were no actual
projects of land consolidations in Serbia, so these advances in technology were not implemented within land consolidations
and benefits were not obvious and quantified. However, in the last few years interest in land consolidations in Serbia has
been intensified and a number of projects have been started and some were already finished using the latest technologies
mentioned above. The role and impact of these technologies on all the relevant activities within major phases of land
consolidation projects were analyzed and the resulting benefits were estimated and given in the paper. Improvements and
benefits were estimated using data from a real land consolidation project. The benefits were expressed in terms of savings in
time and costs and in terms of increased quality of the land consolidation results.
C3  - INTERNATIONAL SCIENTIFIC CONFERENCE AND XXIV MEETING OF SERBIAN SURVEYORS ″″″″PROFESSIONAL PRACTICE AND EDUCATION IN GEODESY AND RELATED FIELDS″″″″ 24-26, June 2011, Kladovo - ,,Djerdap“ upon Danube, Serbia
T1  - Impact of New Technologies for Spatial Data Acquisition and Management on Land Consolidations in Serbia
UR  - https://hdl.handle.net/21.15107/rcub_grafar_3333
ER  - 

@conference{
author = "Šoškić, Mladen and Cvijetinović, Željko and Mihajlović, Dragan and Mitrović, Momir",
year = "2011",
abstract = "Significant innovations and improvements in the technologies for spatial data acquisition and management data
have emerged in the last few decades. Introduction of GPS and the technology of GIS and digital photogrammetry in
surveying practice are definitely the most important ones. In spite of this, during the last few decades there were no actual
projects of land consolidations in Serbia, so these advances in technology were not implemented within land consolidations
and benefits were not obvious and quantified. However, in the last few years interest in land consolidations in Serbia has
been intensified and a number of projects have been started and some were already finished using the latest technologies
mentioned above. The role and impact of these technologies on all the relevant activities within major phases of land
consolidation projects were analyzed and the resulting benefits were estimated and given in the paper. Improvements and
benefits were estimated using data from a real land consolidation project. The benefits were expressed in terms of savings in
time and costs and in terms of increased quality of the land consolidation results.",
journal = "INTERNATIONAL SCIENTIFIC CONFERENCE AND XXIV MEETING OF SERBIAN SURVEYORS ″″″″PROFESSIONAL PRACTICE AND EDUCATION IN GEODESY AND RELATED FIELDS″″″″ 24-26, June 2011, Kladovo - ,,Djerdap“ upon Danube, Serbia",
title = "Impact of New Technologies for Spatial Data Acquisition and Management on Land Consolidations in Serbia",
url = "https://hdl.handle.net/21.15107/rcub_grafar_3333"
}

Šoškić, M., Cvijetinović, Ž., Mihajlović, D.,& Mitrović, M.. (2011). Impact of New Technologies for Spatial Data Acquisition and Management on Land Consolidations in Serbia. in INTERNATIONAL SCIENTIFIC CONFERENCE AND XXIV MEETING OF SERBIAN SURVEYORS ″″″″PROFESSIONAL PRACTICE AND EDUCATION IN GEODESY AND RELATED FIELDS″″″″ 24-26, June 2011, Kladovo - ,,Djerdap“ upon Danube, Serbia.
https://hdl.handle.net/21.15107/rcub_grafar_3333

Šoškić M, Cvijetinović Ž, Mihajlović D, Mitrović M. Impact of New Technologies for Spatial Data Acquisition and Management on Land Consolidations in Serbia. in INTERNATIONAL SCIENTIFIC CONFERENCE AND XXIV MEETING OF SERBIAN SURVEYORS ″″″″PROFESSIONAL PRACTICE AND EDUCATION IN GEODESY AND RELATED FIELDS″″″″ 24-26, June 2011, Kladovo - ,,Djerdap“ upon Danube, Serbia. 2011;.
https://hdl.handle.net/21.15107/rcub_grafar_3333 .

Šoškić, Mladen, Cvijetinović, Željko, Mihajlović, Dragan, Mitrović, Momir, "Impact of New Technologies for Spatial Data Acquisition and Management on Land Consolidations in Serbia" in INTERNATIONAL SCIENTIFIC CONFERENCE AND XXIV MEETING OF SERBIAN SURVEYORS ″″″″PROFESSIONAL PRACTICE AND EDUCATION IN GEODESY AND RELATED FIELDS″″″″ 24-26, June 2011, Kladovo - ,,Djerdap“ upon Danube, Serbia (2011),
https://hdl.handle.net/21.15107/rcub_grafar_3333 .

TY  - CONF
AU  - Cvijetinović, Željko
AU  - Mihajlović, Dragan
AU  - Vojinović, Miloš
AU  - Mitrović, Momir
PY  - 2011
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1941
AB  - Algorithms and software for digital terrain modeling using TIN based surface model are presented in the paper. Processing of all types of terrain surface data are supported: mass points, local extrema, contours, breaklines, structure lines, fault lines, etc. TIN topology and Bézier triangular surface patches are used for terrain surface reconstruction. Special attention is dedicated to the problem of respecting all implicit information about terrain surface that are contained within the input data. This is especially important in cases when terrain surface has to be reconstructed by using mostly contour data, since there are a lot of additional information that are implicitly contained within the data of this type. The software also contains functions for efficient verification of collected terrain data and DTM. Special consideration is given to the numerical procedures and algorithms aiming at providing contours and other outputs of DTM analysis of cartographic quality as required by many surveyors and their clients. The results of experiments demonstrated that the quality of terrain surface reconstruction from contours and/or other data using developed procedures and software is better, or at least as good as the quality achieved by using procedures and methods implemented within standard GIS/DTM software.
PB  - University of Belgrade - Faculty of Civil Engineering
C3  - Aleksić Ivan (Editor): Proceedings of the International Scientific Conference and XXIV Meeting of Serbian Surveyors “Professional Practice and Education in Geodesy and Related Fields”, 24-26 Junе 2011, Kladovo, Serbia
T1  - Terrain Surface Modeling Using Triangular Spline Patches
EP  - 59
SP  - 50
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1941
ER  - 

@conference{
author = "Cvijetinović, Željko and Mihajlović, Dragan and Vojinović, Miloš and Mitrović, Momir",
year = "2011",
abstract = "Algorithms and software for digital terrain modeling using TIN based surface model are presented in the paper. Processing of all types of terrain surface data are supported: mass points, local extrema, contours, breaklines, structure lines, fault lines, etc. TIN topology and Bézier triangular surface patches are used for terrain surface reconstruction. Special attention is dedicated to the problem of respecting all implicit information about terrain surface that are contained within the input data. This is especially important in cases when terrain surface has to be reconstructed by using mostly contour data, since there are a lot of additional information that are implicitly contained within the data of this type. The software also contains functions for efficient verification of collected terrain data and DTM. Special consideration is given to the numerical procedures and algorithms aiming at providing contours and other outputs of DTM analysis of cartographic quality as required by many surveyors and their clients. The results of experiments demonstrated that the quality of terrain surface reconstruction from contours and/or other data using developed procedures and software is better, or at least as good as the quality achieved by using procedures and methods implemented within standard GIS/DTM software.",
publisher = "University of Belgrade - Faculty of Civil Engineering",
journal = "Aleksić Ivan (Editor): Proceedings of the International Scientific Conference and XXIV Meeting of Serbian Surveyors “Professional Practice and Education in Geodesy and Related Fields”, 24-26 Junе 2011, Kladovo, Serbia",
title = "Terrain Surface Modeling Using Triangular Spline Patches",
pages = "59-50",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1941"
}

Cvijetinović, Ž., Mihajlović, D., Vojinović, M.,& Mitrović, M.. (2011). Terrain Surface Modeling Using Triangular Spline Patches. in Aleksić Ivan (Editor): Proceedings of the International Scientific Conference and XXIV Meeting of Serbian Surveyors “Professional Practice and Education in Geodesy and Related Fields”, 24-26 Junе 2011, Kladovo, Serbia
University of Belgrade - Faculty of Civil Engineering., 50-59.
https://hdl.handle.net/21.15107/rcub_grafar_1941

Cvijetinović Ž, Mihajlović D, Vojinović M, Mitrović M. Terrain Surface Modeling Using Triangular Spline Patches. in Aleksić Ivan (Editor): Proceedings of the International Scientific Conference and XXIV Meeting of Serbian Surveyors “Professional Practice and Education in Geodesy and Related Fields”, 24-26 Junе 2011, Kladovo, Serbia. 2011;:50-59.
https://hdl.handle.net/21.15107/rcub_grafar_1941 .

Cvijetinović, Željko, Mihajlović, Dragan, Vojinović, Miloš, Mitrović, Momir, "Terrain Surface Modeling Using Triangular Spline Patches" in Aleksić Ivan (Editor): Proceedings of the International Scientific Conference and XXIV Meeting of Serbian Surveyors “Professional Practice and Education in Geodesy and Related Fields”, 24-26 Junе 2011, Kladovo, Serbia (2011):50-59,
https://hdl.handle.net/21.15107/rcub_grafar_1941 .

TY  - CONF
AU  - Mihajlović, Dragan
AU  - Mitrović, Momir
AU  - Cvijetinović, Željko
AU  - Vojinović, M.
PY  - 2008
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/190
AB  - Some limitation brought to us by cameras and imaging platforms sometimes can not be overcome as for the case of minimum airplane flight height used as platforms. In other case imaging of larger territories is often irrational, when it is performed from balloons or helicopters. So, there is an often need for combining different cameras and imaging platforms. New digital airborne cameras and non-metric high resolutions digital cameras expands our possibilities for combining this imaging source where we can get to optimal data source without disconcerting accuracy and unnecessary job build-up. In this paper the methodology of combining photogrammetric digital camera Z/I Imaging DMC and Canon EOS 5D will be presented as a source of data needed for photogrammetric product making of complex archaeological location with different photo resolutions.
PB  - International Society for Photogrammetry and Remote Sensing
C3  - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR
T1  - Photogrammetry of archaeological site felix romuliana at gamzigrad using aerial digital camera and non-metric digital camera
EP  - 399
SP  - 397
VL  - 37
UR  - https://hdl.handle.net/21.15107/rcub_grafar_190
ER  - 

@conference{
author = "Mihajlović, Dragan and Mitrović, Momir and Cvijetinović, Željko and Vojinović, M.",
year = "2008",
abstract = "Some limitation brought to us by cameras and imaging platforms sometimes can not be overcome as for the case of minimum airplane flight height used as platforms. In other case imaging of larger territories is often irrational, when it is performed from balloons or helicopters. So, there is an often need for combining different cameras and imaging platforms. New digital airborne cameras and non-metric high resolutions digital cameras expands our possibilities for combining this imaging source where we can get to optimal data source without disconcerting accuracy and unnecessary job build-up. In this paper the methodology of combining photogrammetric digital camera Z/I Imaging DMC and Canon EOS 5D will be presented as a source of data needed for photogrammetric product making of complex archaeological location with different photo resolutions.",
publisher = "International Society for Photogrammetry and Remote Sensing",
journal = "International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR",
title = "Photogrammetry of archaeological site felix romuliana at gamzigrad using aerial digital camera and non-metric digital camera",
pages = "399-397",
volume = "37",
url = "https://hdl.handle.net/21.15107/rcub_grafar_190"
}

Mihajlović, D., Mitrović, M., Cvijetinović, Ž.,& Vojinović, M.. (2008). Photogrammetry of archaeological site felix romuliana at gamzigrad using aerial digital camera and non-metric digital camera. in International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR
International Society for Photogrammetry and Remote Sensing., 37, 397-399.
https://hdl.handle.net/21.15107/rcub_grafar_190

Mihajlović D, Mitrović M, Cvijetinović Ž, Vojinović M. Photogrammetry of archaeological site felix romuliana at gamzigrad using aerial digital camera and non-metric digital camera. in International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR. 2008;37:397-399.
https://hdl.handle.net/21.15107/rcub_grafar_190 .

Mihajlović, Dragan, Mitrović, Momir, Cvijetinović, Željko, Vojinović, M., "Photogrammetry of archaeological site felix romuliana at gamzigrad using aerial digital camera and non-metric digital camera" in International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR, 37 (2008):397-399,
https://hdl.handle.net/21.15107/rcub_grafar_190 .

TY  - CONF
AU  - Mihajlović, Dragan
AU  - Mitrović, Momir
AU  - Vojinović, M.
AU  - Šoškić, Mladen
PY  - 2004
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/76
AB  - Paper reviews achieved level of orthophoto production in Serbia, with estimates on further developments in the next few years. Users, sources of financing, application areas, state and private sector partnership, etc. are particularly analyzed. Role of orthophoto in a situation characterized by outdated official maps, especially for urban areas with a large number of new objects, and even whole new settlements which are not surveyed and mapped is evaluated. Digital orthophoto also plays key role in Serbia in all cases where large scaled GIS establishment is concerned. Paper also reviews gained experiences related to this matter. Although there is a generally unquestionable support to orthophoto in Serbia, there are still some issues that have to be dealt with. For example, when orthophoto utilization for cadastral purposes is considered, there is no answer to the question whether or not, and under which conditions, digital orthophoto could be used for the update of official cadastral maps at 1:1000 and 1:2500 scale. Some solutions to this dilemma are presented in paper. Some other related issues such as technical regulations for digital orthophoto production, copyright, establishment of the national orthophoto program, etc. are also reviewed in the paper.
PB  - International Society for Photogrammetry and Remote Sensing
C3  - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR
T1  - Status of orthophoto production and applications in Serbia
VL  - 35
UR  - https://hdl.handle.net/21.15107/rcub_grafar_76
ER  - 

@conference{
author = "Mihajlović, Dragan and Mitrović, Momir and Vojinović, M. and Šoškić, Mladen",
year = "2004",
abstract = "Paper reviews achieved level of orthophoto production in Serbia, with estimates on further developments in the next few years. Users, sources of financing, application areas, state and private sector partnership, etc. are particularly analyzed. Role of orthophoto in a situation characterized by outdated official maps, especially for urban areas with a large number of new objects, and even whole new settlements which are not surveyed and mapped is evaluated. Digital orthophoto also plays key role in Serbia in all cases where large scaled GIS establishment is concerned. Paper also reviews gained experiences related to this matter. Although there is a generally unquestionable support to orthophoto in Serbia, there are still some issues that have to be dealt with. For example, when orthophoto utilization for cadastral purposes is considered, there is no answer to the question whether or not, and under which conditions, digital orthophoto could be used for the update of official cadastral maps at 1:1000 and 1:2500 scale. Some solutions to this dilemma are presented in paper. Some other related issues such as technical regulations for digital orthophoto production, copyright, establishment of the national orthophoto program, etc. are also reviewed in the paper.",
publisher = "International Society for Photogrammetry and Remote Sensing",
journal = "International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR",
title = "Status of orthophoto production and applications in Serbia",
volume = "35",
url = "https://hdl.handle.net/21.15107/rcub_grafar_76"
}

Mihajlović, D., Mitrović, M., Vojinović, M.,& Šoškić, M.. (2004). Status of orthophoto production and applications in Serbia. in International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR
International Society for Photogrammetry and Remote Sensing., 35.
https://hdl.handle.net/21.15107/rcub_grafar_76

Mihajlović D, Mitrović M, Vojinović M, Šoškić M. Status of orthophoto production and applications in Serbia. in International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR. 2004;35.
https://hdl.handle.net/21.15107/rcub_grafar_76 .

Mihajlović, Dragan, Mitrović, Momir, Vojinović, M., Šoškić, Mladen, "Status of orthophoto production and applications in Serbia" in International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR, 35 (2004),
https://hdl.handle.net/21.15107/rcub_grafar_76 .

TY  - CONF
AU  - Mitrović, Momir
AU  - Cvijetinović, Željko
AU  - Mihajlović, Dragan
PY  - 2004
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1942
AB  - Paper presents procedures and experiences on using low cost desktop scanner Epson Expression 1640XL for orthophoto production.Complete process of scanning, scanner calibration and removal of systematic distortions of scanned images caused by scanner is developed and tested on several large projects of orthophoto production. Special, user-friendly software is developed for these purposes. The software includes algorithm for scanner calibration and estimation of distortions based on statistical analysis by using collocation (linear prediction). It is not expected and required from user to have any idea on the structure and distribution of scanner errors. These will be determined by the statistical analysis. Therefore, the software usage is not limited to any particular scanner or the type and nature of image distortions it introduces. Batch processing of scanned images is also supported with options for saving images in various formats and using several resampling types. The results presented in paper shows that the procedure is very fast and reliable when geometric accuracy of scanning is concerned. The potentials of the developed software and procedure are high. Total costs for the software and the scanner are approximately tentimes lower than costs for the professional photogrammetric scanner. The geometric accuracy achieved is between 5 and 10μm, which is less than one pixel size in highest scanning resolution (1600 DPI). The aspects of the scanner usage at a high production rate are also analysed. Finally, recommendations for further improvements of the developed procedures are given.
PB  - International Society for Photogrammetry and Remote Sensing
PB  - Cenkler Matbaasi,Istambul
C3  - Orhan Altan (Editor), Proceedings and Results: The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Istanbul, Vol. XXXV, Part B1, Commision I, WG I/2, Istambul, Turkey, July 12-23, 2004.
T1  - Procedures and Experiences on Using Desktop Scanner for Orthophoto Production
EP  - 59
SP  - 53
VL  - XXXV
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1942
ER  - 

@conference{
author = "Mitrović, Momir and Cvijetinović, Željko and Mihajlović, Dragan",
year = "2004",
abstract = "Paper presents procedures and experiences on using low cost desktop scanner Epson Expression 1640XL for orthophoto production.Complete process of scanning, scanner calibration and removal of systematic distortions of scanned images caused by scanner is developed and tested on several large projects of orthophoto production. Special, user-friendly software is developed for these purposes. The software includes algorithm for scanner calibration and estimation of distortions based on statistical analysis by using collocation (linear prediction). It is not expected and required from user to have any idea on the structure and distribution of scanner errors. These will be determined by the statistical analysis. Therefore, the software usage is not limited to any particular scanner or the type and nature of image distortions it introduces. Batch processing of scanned images is also supported with options for saving images in various formats and using several resampling types. The results presented in paper shows that the procedure is very fast and reliable when geometric accuracy of scanning is concerned. The potentials of the developed software and procedure are high. Total costs for the software and the scanner are approximately tentimes lower than costs for the professional photogrammetric scanner. The geometric accuracy achieved is between 5 and 10μm, which is less than one pixel size in highest scanning resolution (1600 DPI). The aspects of the scanner usage at a high production rate are also analysed. Finally, recommendations for further improvements of the developed procedures are given.",
publisher = "International Society for Photogrammetry and Remote Sensing, Cenkler Matbaasi,Istambul",
journal = "Orhan Altan (Editor), Proceedings and Results: The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Istanbul, Vol. XXXV, Part B1, Commision I, WG I/2, Istambul, Turkey, July 12-23, 2004.",
title = "Procedures and Experiences on Using Desktop Scanner for Orthophoto Production",
pages = "59-53",
volume = "XXXV",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1942"
}

Mitrović, M., Cvijetinović, Ž.,& Mihajlović, D.. (2004). Procedures and Experiences on Using Desktop Scanner for Orthophoto Production. in Orhan Altan (Editor), Proceedings and Results: The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Istanbul, Vol. XXXV, Part B1, Commision I, WG I/2, Istambul, Turkey, July 12-23, 2004.
International Society for Photogrammetry and Remote Sensing., XXXV, 53-59.
https://hdl.handle.net/21.15107/rcub_grafar_1942

Mitrović M, Cvijetinović Ž, Mihajlović D. Procedures and Experiences on Using Desktop Scanner for Orthophoto Production. in Orhan Altan (Editor), Proceedings and Results: The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Istanbul, Vol. XXXV, Part B1, Commision I, WG I/2, Istambul, Turkey, July 12-23, 2004.. 2004;XXXV:53-59.
https://hdl.handle.net/21.15107/rcub_grafar_1942 .

Mitrović, Momir, Cvijetinović, Željko, Mihajlović, Dragan, "Procedures and Experiences on Using Desktop Scanner for Orthophoto Production" in Orhan Altan (Editor), Proceedings and Results: The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Istanbul, Vol. XXXV, Part B1, Commision I, WG I/2, Istambul, Turkey, July 12-23, 2004., XXXV (2004):53-59,
https://hdl.handle.net/21.15107/rcub_grafar_1942 .

TY  - CONF
AU  - Vojinović, M.
AU  - Cvijetinović, Željko
AU  - Mitrović, Momir
PY  - 2004
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/77
AB  - Pilot project of cadastral data distribution via Internet started at the end of 2001. Reason was a pressure from users who wanted faster and improved access to cadastral data. Motive of the Governmental Geodetic Authority of Serbia (GGA) was to use pilot project for testing technical potentials, but also to use it as a source of experiences for writing regulations that would legally formulate distribution of official cadastral data by using Internet. Starting assumption for the development of the more advanced solution for data integration and distribution was to respect existing hardware, software and organization of GGA. Large cities were chosen because there were the strongest motives for solving these problems. Also, the best telecommunication infrastructure was there. The proposed solution is based on Internet technology. Software development is based on n-tier architecture. System for data distribution integrated data from different sources (cadastral maps, orthophoto, topographic maps, cadastral register, etc.), different operating systems and applicative software. Software design is based on OpenGIS/TC211 standard (WMS ver 1.0). Cadastar started as a pilot project in the town of Novi Sad, but during realization it has become an official system for cadastral data distribution. Results that were achieved were: data integration, faster response on user demands, some major municipality agencies has became direct users of new services. Making new regulations of this matter, data acquisition, data quality enhancement, etc followed project realization. Paper describes telecommunication infrastructure of city intranet as an environment for the developed application, application architecture and the data. Some statistics regarding the system exploitation will be also given.
PB  - International Society for Photogrammetry and Remote Sensing
C3  - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR
T1  - Cadastral data services on internet in Serbia
VL  - 35
UR  - https://hdl.handle.net/21.15107/rcub_grafar_77
ER  - 

@conference{
author = "Vojinović, M. and Cvijetinović, Željko and Mitrović, Momir",
year = "2004",
abstract = "Pilot project of cadastral data distribution via Internet started at the end of 2001. Reason was a pressure from users who wanted faster and improved access to cadastral data. Motive of the Governmental Geodetic Authority of Serbia (GGA) was to use pilot project for testing technical potentials, but also to use it as a source of experiences for writing regulations that would legally formulate distribution of official cadastral data by using Internet. Starting assumption for the development of the more advanced solution for data integration and distribution was to respect existing hardware, software and organization of GGA. Large cities were chosen because there were the strongest motives for solving these problems. Also, the best telecommunication infrastructure was there. The proposed solution is based on Internet technology. Software development is based on n-tier architecture. System for data distribution integrated data from different sources (cadastral maps, orthophoto, topographic maps, cadastral register, etc.), different operating systems and applicative software. Software design is based on OpenGIS/TC211 standard (WMS ver 1.0). Cadastar started as a pilot project in the town of Novi Sad, but during realization it has become an official system for cadastral data distribution. Results that were achieved were: data integration, faster response on user demands, some major municipality agencies has became direct users of new services. Making new regulations of this matter, data acquisition, data quality enhancement, etc followed project realization. Paper describes telecommunication infrastructure of city intranet as an environment for the developed application, application architecture and the data. Some statistics regarding the system exploitation will be also given.",
publisher = "International Society for Photogrammetry and Remote Sensing",
journal = "International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR",
title = "Cadastral data services on internet in Serbia",
volume = "35",
url = "https://hdl.handle.net/21.15107/rcub_grafar_77"
}

Vojinović, M., Cvijetinović, Ž.,& Mitrović, M.. (2004). Cadastral data services on internet in Serbia. in International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR
International Society for Photogrammetry and Remote Sensing., 35.
https://hdl.handle.net/21.15107/rcub_grafar_77

Vojinović M, Cvijetinović Ž, Mitrović M. Cadastral data services on internet in Serbia. in International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR. 2004;35.
https://hdl.handle.net/21.15107/rcub_grafar_77 .

Vojinović, M., Cvijetinović, Željko, Mitrović, Momir, "Cadastral data services on internet in Serbia" in International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPR, 35 (2004),
https://hdl.handle.net/21.15107/rcub_grafar_77 .