1. September 13-16, 20055th International PHOTOMOD User Conference, Jurmala, Latvia 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

2. September 13-16, 20055th 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

3. September 13-16, 20055th 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

4. September 13-16, 20055th International PHOTOMOD User Conference, Jurmala, Latvia 4 Aerial photography 1:30000

5. September 13-16, 20055th 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

6. September 13-16, 20055th 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 DVP for stereoplotting at the scale 1:10000

7. September 13-16, 20055th 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

8. September 13-16, 20055th 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

9. September 13-16, 20055th International PHOTOMOD User Conference, Jurmala, Latvia 9 Aerial photography 1:30000, second coverage

10. September 13-16, 20055th 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

11. September 13-16, 20055th International PHOTOMOD User Conference, Jurmala, Latvia 11 Aerial photography 1:5000 – 1:11200

12. September 13-16, 20055th International PHOTOMOD User Conference, Jurmala, Latvia 12 Aerial photography with 4k x 4k digital camera

13. September 13-16, 20055th 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”

14. September 13-16, 20055th International PHOTOMOD User Conference, Jurmala, Latvia 14 Aerial photography 1:5000 for “Latvian Railroad”

15. September 13-16, 20055th 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

16. September 13-16, 20055th 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

17. September 13-16, 20055th 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

18. September 13-16, 20055th 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

19. September 13-16, 20055th 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