1 / 30

Dmitry V. К ochergin (Racurs), Maxim V. Skorniakov (Mosgiprotrans)

Using DSS digital camera images and D Т M from ALS 50 laser scanner for creating orthomosaics in PHOTOMOD system. Dmitry V. К ochergin (Racurs), Maxim V. Skorniakov (Mosgiprotrans). On-board data + software. Digital aerial images Exterior orientation parameters DTM from Laser scanner.

finian
Download Presentation

Dmitry V. К ochergin (Racurs), Maxim V. Skorniakov (Mosgiprotrans)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. UsingDSS digital camera images and DТM from ALS50 laser scannerfor creating orthomosaics in PHOTOMOD system Dmitry V. Кochergin (Racurs), Maxim V. Skorniakov (Mosgiprotrans)

  2. On-board data + software Digital aerial images Exterior orientation parameters DTM from Laser scanner TerraScan software PHOTOMOD software

  3. PHOTOMOD 4.1 – automatic interior orientation of images from the digital camera

  4. PHOTOMOD 4.1 – importing exterior orientation parameters from Applanix format

  5. PHOTOMOD 4.1 – block layout creation from the exterior orientation parameters

  6. PHOTOMOD 4.1 – automatic tie points measurements using the block layout

  7. PHOTOMOD 4.1 – import of laser scanner data from LAS format

  8. Input, processing, output block adjustment direct georeferencing + automatic tie points measurements + ground control points + automatic tie points measurements

  9. MOSGIPROTRANS Co. is the biggest Russian institute of exploration and projecting of transportation objects one of the projects in 2006: reconstruction of existing highways and railroads and projecting new ones • aerial survey: • DSS camera (focal length = 35 mm) • Applanix • ALS 50 • Flight height 300 m • Air vehicle Mi-8 helicopter • Total length 180 кm • Aerial survey • productivity 150 km per day • Velocity 120-150 km\h • output products: • DEM • Orthomosaics of 1:1000scale • 3D vector objects

  10. How does it look like

  11. Calibration of DSS-ALS50 system was done in accordance with standard Applanix technology on the special polygon

  12. Project geodetic works “Moscow” coordinate system • GCPs (also for more precise field survey and calculation of accurate local datum parameters) • Tacheometry • Base stations forALS andDSS (Applanix postprocessing)

  13. PHOTOMOD 4.1. One of project strips (35 images)

  14. PHOTOMOD 4.1. Automatic interior orientation

  15. PHOTOMOD 4.1. Block layout after importing Applanix data

  16. PHOTOMOD 4.1. Automatic tie points measurements

  17. PHOTOMOD 4.1. Automatic tie points measurements

  18. PHOTOMOD 4.1. Block adjustment

  19. TerraScan. All points ~8 points / sq.m ~720 000 points / image

  20. TerraScan. “Ground” points ~2 points / sq.m ~180 000 points / image

  21. TerraScan. “Model key” points ~0.2 points / sq.m ~18 000 points / image

  22. PHOTOMOD 4.1

  23. PHOTOMOD 4.1 Laser scanner data The biggest LAS file imported to PHOTOMOD was about 5 000 000 points

  24. PHOTOMOD 4.1

  25. PHOTOMOD 4.1 DEM from laser scanner data

  26. PHOTOMOD 4.1 DEM from laser scanner data

  27. PHOTOMOD 4.1 Orthomosaic

  28. PHOTOMOD 4.1 Orthomosaic

  29. Accuracy and productivity block adjustment direct georeferencing + automatic tie points measurements + ground control points + automatic tie points measurements • Total time for 35 images project processing is about 10 hours

  30. Thank you for attention!

More Related