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NY Orthophoto High Resolution Mosaics Flight Dates: 2002 Resolution: 1ft Projection: UTM NAD 83 Color: CIR, but Tioga is B/W. General Process Description: The aerial film was acquired in 2002. The imagery was scanned at 14 microns using a Z/I Imaging Photoscan TD-1 scanner. The Ground control used to support the ortho mapping was collected by identifying strategic points ont he aerial photography then determining the coordinates by ground survey techniques. The Aerial Triangulation was performed using softcopy workstations and Intergraph's ISDM software. Bundle adjustment was performed using PAT-B and Digital Elevation Models were created using standard photogrammetric collection techniques on Intergraph's SSK soft copy workstation. During the bridging process, both the DEM and the bridge deck were captured as well as the ground features surrounding the bridge. A "DTM apron" was delineated at each side of the elevated bridge and the resulting smearing is located and accumulated in the solid black apron area. The images were then ortho rectified using Intergraph's Base Rectifier software. Color balancing was performed using both Intergraph's IRASC package and Orthovista. Seamless mosaicing was performed using Triathlon's AIM software and the seamless mosaic was clipped into tiles using Triathlon's Clipmos software. Images were then quality controlled using Intergraph's Irasc and Adobe PhotoShop software. |
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