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DEVELOPMENT OF PHOTOGRAMMETRY IN THE STATE LAND SERVICE OF THE REPUBLIC OF LATVIA

DEVELOPMENT OF PHOTOGRAMMETRY IN THE STATE LAND SERVICE OF THE REPUBLIC OF LATVIA. Valdis Vanags The State Land Service of the Republic of Latvia (SLS) Large Scale Mapping Department E-mail: valdis.vanags@vzd.gov.lv. First steps of development. In 1992 SLS was founded Some tasks of SLS:

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DEVELOPMENT OF PHOTOGRAMMETRY IN THE STATE LAND SERVICE OF THE REPUBLIC OF LATVIA

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  1. DEVELOPMENT OF PHOTOGRAMMETRY IN THE STATE LAND SERVICE OF THE REPUBLIC OF LATVIA Valdis Vanags The State Land Service of the Republic of Latvia (SLS) Large Scale Mapping Department E-mail: valdis.vanags@vzd.gov.lv 5th International PHOTOMOD User Conference, Jurmala, Latvia

  2. First steps of development • In 1992 SLS was founded • Some tasks of SLS: - to develop, introduce and maintain the state cadastre of land and other real estate - state cadastral mapping - state topographic surveying and mapping • Pilot project in cooperation with “Kampsax Geoplan” in 1993 5th International PHOTOMOD User Conference, Jurmala, Latvia

  3. Latvian national cadastre mapping program • Start of photogrammetry in Latvia from scratch • Aerial photography in co-operation with “Swedesurvey”, scale 1:30000, B/W • Orthophoto production, scale 1:10000 • On the job training – flight planning, aerial triangulation • First photogrammetric instruments – two Wild A8, SOS-Map software 5th International PHOTOMOD User Conference, Jurmala, Latvia

  4. Aerial photography 1:30000 5th International PHOTOMOD User Conference, Jurmala, Latvia

  5. Cartography development concept • Adopted in 1995 • Development of system of photogrammetry planned: - aerial camera - photo laboratory - analytical stereoplotters - digital photogrammetric workstations - auxiliary photogrammetric devices - geodetic instruments - computer equipment - cars 5th International PHOTOMOD User Conference, Jurmala, Latvia

  6. First modern photogrammetric equipment • Implementation of cartography development concept: - analytical stereoplotter SD2000 for stereoplotting at the scale 1:2000 - digital photogrammetric workstation DPW770 for orthophoto production - 2 digital photogrammetric workstations DVPfor stereoplotting at the scale 1:10000 5th International PHOTOMOD User Conference, Jurmala, Latvia

  7. Phare project “Technical assistance for land registration and privatization in Latvia” • Training of stereooperators and other staff of SLS • Study trips to some European companies • Course in digital photogrammetry in Lausanne Politechnic • Expert consultations in development of product specifications, stereoplotting, orthophoto production and production monitoring • Purchase of digital photogrammetric workstation DPW770 5th International PHOTOMOD User Conference, Jurmala, Latvia

  8. Riga mapping project • Started in 1999 • B/W aerial photography at scale 1:6200 with narrow angle camera • Mapping at scale 1:2000 • Purchase of equipment: - photogrammetric scanner DSW300 - 2 analytical stereoplotters SD3000 5th International PHOTOMOD User Conference, Jurmala, Latvia

  9. Aerial photography 1:30000, second coverage 5th International PHOTOMOD User Conference, Jurmala, Latvia

  10. Aerial photography for mapping at scale 1:2000 • 1994: Riga • 1995: Daugavpils • 1997: Liepaja, Madona • 1998: Cesis • 1999: Riga • 2001: Ventspils, Jelgava, Bauska, Ogre • 2002 – 2005: about 50 populated places 5th International PHOTOMOD User Conference, Jurmala, Latvia

  11. Aerial photography 1:5000 – 1:11200 5th International PHOTOMOD User Conference, Jurmala, Latvia

  12. Aerial photography with 4k x 4k digital camera 5th International PHOTOMOD User Conference, Jurmala, Latvia

  13. Other projects • Road mapping for Latvian road directorate • Railroad mapping for “Latvian railroad” • Aerial triangulation of infrared images for “FM-Kartta” 5th International PHOTOMOD User Conference, Jurmala, Latvia

  14. Aerial photography 1:5000 for “Latvian Railroad” 5th International PHOTOMOD User Conference, Jurmala, Latvia

  15. PHOTOMOD • First modules in 2002 • Licences: 2 AT, 3DTM, 2MOSAIC; 1 full local version • Used for orthophoto mapping at scales 1:2000 and 1:10000 and for topographic mapping at scales 1:2000 • Orthophoto production stuff: 6 operators (2 skilled) • Orthophoto productivity: ~ 1000 – 1400 map sheets per year 5th International PHOTOMOD User Conference, Jurmala, Latvia

  16. Employees • Graduates from Riga Technical University, Latvian Agricultural University and Latvian University • Some have education in previous USSR and had working experience in soviet cartographic factories • Some employees had no special knowledge • About 20 persons active in photogrammetry in SLS at the moment 5th International PHOTOMOD User Conference, Jurmala, Latvia

  17. Future development perspectives • Use of GPS/IMU data • Use of large format digital cameras(a competition announced until September 23, 2005) • Use of laser scanning data (a competition announced until September 28, 2005) • Use of satellite imagery 5th International PHOTOMOD User Conference, Jurmala, Latvia

  18. Conclusions • SLS able to carry out most of photogrammetric jobs • Problems: - lack of own aerial camera - lack of qualified personel • Reorganization of SLS may influence the future development 5th International PHOTOMOD User Conference, Jurmala, Latvia

  19. Thank you for your attention! Valdis Vanags The State Land Service of the Republic of Latvia (SLS) Large Scale Mapping Department E-mail: valdis.vanags@vzd.gov.lv 5th International PHOTOMOD User Conference, Jurmala, Latvia

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