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11 th International Scientific and Technical Conference

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  1. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain UPDATING OF BULGARIAN LARGE SCALE TOPOGRAPHIC MAPBY DIGITAL PHOTOGRAMMETRIC SOFTWARE PHOTOMOD 5.1 Vanya Petrova, M. Sc. GIS-SOFIA Ltd.,Bulgaria photogrammetry@gis-sofia.bg

  2. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain INTRODUCTION • 1920 - 1930 – Start application of large scale topographic mapping by aerial photogrammetry in Russia and USA • 1939–1945 – During the Second World War large scale mapping became common occurrence for all countries, participated in the war • After 1945 – All European countries started topographic mapping by aerial photogrammetry Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova

  3. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain PHOTOGRAMMETRY IN BULGARIA • 1942 - Start application of aerial stereophotogrammetry for production of topographic map at 1:25 000 scale • 1955 - Start application of aerial stereophotogrammetry for production of topographic maps at 1:5000 and 1: 10 000 scale All maps periodically are revised • 1983 - 1996 - Orthophotoplans at 1:5000 and 1:10 000 scale are prodused over 85% of Bulgarian territory, intended for rural cadastre • 2006, 2010, 2011 - Orthophotoplans at 1:10 000 scale are made for the Ministry of Agriculture and Food over the 98% of the territory of Bulgaria (111 000 sq. km) • 2008 - Digital aerial photogrammetry is used for production of orthophotoplans at 1:1000 and 1:2000 scale over territory of 1467 sq. km Sofia Municipality, as well as generation of DTM Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova

  4. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain DIGITAL PHOTOGRAMMETRY AND GEO DATA Aerial photogrammetry Satellite photogrammetry Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova

  5. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain WHY DIGITAL PHOTOGRAMMETRY? • High accuracy, good visualization with high pixel resolution and quick results over the large territories (thuss updating topographic maps will compensate the loss of time) • Satellite sensors may soon replace the aerial photography • These images would be captured and transmitted as digital data, which could be processed by computers • There are enormous fields where digital photogrammetry can be used, for example creation of 3D models, etc. Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova

  6. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain THE PILOT PROJECT PURPOSE • To create new technical specifications according to the modern standards and technologies and to meet user needs • For identification of main activities and rules for creating digital large scale topographic maps (1:5000, 1:10 000), map content, technical processes • To serve as a solid basis for current technical specifications, regulating the requirements and guidance of technology for creating and updating digital topographic database collection and use of topographic information TECHNICAL REQUIREMENTS • Bulgarian Geodetic System - BGS 2005 • Digital model • Accuracy - according existing technical specification • Classification of map symbols • Filling in database from various sources of information Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova

  7. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain THE PILOT PROJECT SCOPE OF THE PROJECT • Photogrammetric processing • Interpretation and stereovectorization • Determination of metric characteristics of the terrain, landforms and vegetation, as well as determination of roads, rivers, streams etc. width • Creating a database • Using the elements of digital cadastral map • Database of geographical names • Printing the map Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova

  8. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain THE PILOT PROJECT WORK FLOW • Photogrammetric processing and stereovectorization • Terrain forms • Railways • Rivers and water areas • Pipelins and equipment • Supporting walls • Buildings and other features • Field inspection • Adding the information after inspection • Creating a database • Cartography process • Printing the map Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova

  9. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain GENERAL INFORMATION • Blocks of aerial pictures…………………....……………......……........ 36 • Strips of aerial pictures……....…....................................................... 58 • Aerial pictures………………....………..............…….......................5669 • Ground pixel size (GSD).....10 cm (urban area) and 20 cm (rural area) • Average flight height…...1000 m (urban area) and 2000 m (rural area) • Pre-marked points on the terrain………..……………….……….…. 393 • Pictures per 1 pre-marked point…………..……………………………14 AREA CHARACTERISTICS • Area: 1467 sq. km • Terrain: flat, lightly hilly and hilly low houses • Average height of the terrain above sea level: 750 m Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova

  10. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain CONFIGURATIONOF PHOTOMOD 5.1 • PHOTOMODCore • PHOTOMOD AT • PHOTOMODSolverA • PHOTOMODSteroVector • PHOTOMODMosaic OTHER SOFTWARE PRODUCTS USED • ArcView • AutoCAD low houses • ArcGIS • Adobe Illustrator • CorelDraw Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova

  11. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain CREATING OF DIGITAL MODEL OF DATA Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova

  12. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain CREATING OF DTM Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova

  13. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain CREATING OF DATABASE • Geodetic data - triangulation and working networks • Topographic data - points, lines, polygons • Structure of geospatial data • Sources and methods for acquisition of geospatial data • Requirements of minimum attribute information for graphic data and metadata • Technical specification for quality of geospatial data DATA FORMAT Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova

  14. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain CONCLUSIONS AND RECOMMENDATIONS • Concerning the modern digital technology and the steady increase urban territories, it is necessary to create and update the entire topographic information • For the new method of mapping i.e. new technologies, technical means and software it is needed to create new ordinances or to update the old ones • The digital technology significantly reduce the time required for producing or updating maps and will improve the overall accuracy • Classical mapping is supplemented by new types of visualization systems from different platforms • The pictures themselves represent huge opportunities for visualization and analysis of 2D, 3D and 4D data • These capabilities must be integrated into e-government and e-commerce development • Internet provides more efficient means of communication than printed media especiallywhen it comes to rapidly developing technology Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova

  15. 11thInternational Scientific and Technical Conference From imagery to map: digital photogrammetric technologies September 19–22, 2011, Tossa de Mar, Spain THANK YOU FOR YOUR ATTENTION ! Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova