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11 th International Scientific and Technical Conference. From imagery to map: d igital photogrammetric technologies. September 19–22, 2011, Tossa de Mar, Spain . UPDATING OF BULGARIAN LARGE SCALE TOPOGRAPHIC MAP BY DIGITAL PHOTOGRAMMETRIC SOFTWARE PHOTOMOD 5.1. Vanya Petrova, M. Sc.

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11 th International Scientific and Technical Conference

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11 th international scientific and technical conference

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

[email protected]


11 th international scientific and technical conference

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


11 th international scientific and technical conference

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


11 th international scientific and technical conference

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


11 th international scientific and technical conference

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


11 th international scientific and technical conference

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


11 th international scientific and technical conference

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


11 th international scientific and technical conference

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


11 th international scientific and technical conference

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 hillylow 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


11 th international scientific and technical conference

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

  • AutoCADlow houses

  • ArcGIS

  • Adobe Illustrator

  • CorelDraw

Updating of Bulgarian large scale topographic map by digital photogrammetric software PHOTOMOD 5.1 , Vanya Petrova


11 th international scientific and technical conference

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


11 th international scientific and technical conference

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


11 th international scientific and technical conference

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


11 th international scientific and technical conference

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


11 th international scientific and technical conference

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


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