Transcript Document
Xth International Scientific and Technical Conference From Imagery to Map: Digital Photogrammetric Technologies Effective techniques for working in PHOTOMOD Alexandra Kiseleva Manager of Technical Support Department September 2010, Gaeta, Italy Effective techniques for working in PHOTOMOD Resource system. Creating data structure Resource system. Network profiles management ADS imagery processing. Data preparation Import of orientation data for digital frame cameras UltraCam data processing. Metadata import Creating block layout for automatic tie points measurement Block layout accuracy control Improving block layout with DEM Show marker position in Google Maps and Yandex Maps Distributed processing PHOTOMOD 5. Resource System \\Server1 Share1\ Share2\ Share3\ \\Server2 Share1\ Share2\ Share3\ Data distributed over multiple network shares Logical virtual data tree in PHOTOMOD Resources PHOTOMOD 5. Resource System Example: real production configuration Several TB of data residing in 9 network folders of 3 file-servers Resource tree in the PHOTOMOD Explorer PHOTOMOD 5. Resource System Manage network configuration from a single working place PHOTOMOD 5. ADS imagery processing Set of ADS Level 1 source files Necessary ADS Level 1 files for each image: *.sup *.ads *.odf *.odf.adj *.tif Camera files with interior orientation data: *.cam misalignment.dat PHOTOMOD 5. ADS imagery processing Prepare ADS data Solve ambiguities appearing when copying Level 1 data from one computer to another PHOTOMOD 5. Project creation. Import of orientation data 1) Obtain source images UltraCam images with metadata JPEG files with EXIF structure 2) Convert the imagery to MS-TIFF Metadata is extracted into separate XML files 3) Load the converted images into PHOTOMOD project MS-TIFF files with pyramid XML files with metadata 4) Use metadata information for automatic camera file creation and interior orientation for automatic block splitting into strips and block layout creation PHOTOMOD 5. Importing UltraCam metadata UltraCam metadata contains Interior orientation parameters Angular and linear exterior orientation parameters GPS-time PHOTOMOD 5. Creating block layout for automatic tie points measurement Source data Survey of mountainous terrain, 600 images Coordinates of projection centers Relief elevation 0-1300 meters Accurate block layout helps to increase speed and quality of automatic tie points measurement PHOTOMOD 5. Block layout accuracy control Right-click an image Press D key to show ruler Point search area exceeds 2000 pixels, it may lead to tie points misfiring. It is necessary to improve the block layout PHOTOMOD 5. Improving block layout with DEM SRTM DEM fragment for the site Before After PHOTOMOD 5. Show marker position in Google Maps Service – Show in Google Maps Google Maps Clipboard Check for consistency between your project and the real world Google Earth PHOTOMOD 5. Show marker position in Yandex Maps Service – Show in Yandex Maps Check for consistency between your project and the real world Yandex Maps Yandex Maps PHOTOMOD 5. Distributed processing File-server with project data Processing workstations Distributed processing is supported for Converting images to PHOTOMOD format Automatic points computing Creation of orthophoto sheets See you at Training classes on 22nd September! Thank you for attention!