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EXHIBIT A <br /> <br />Digital Orthophotography <br /> <br />The new photography will be scanned at a resolution of 2000 dpi and subjected to <br />radiometric color balancing before ortho-rectification. The camera locations and <br />orientations from the aerotriangulation adjustment and the revised terrain model will be <br />used to generate an ortho-rectified image for each exposure. These orthophotos will be <br />mosaicked using seamline techniques designed to eliminate building lean conflicts from <br />the final orthophoto tiles. Special nadir exposures will be made of major elevated road <br />structures to eliminate the patches of missing ground imagery that would otherwise <br />result when elevated overpasses are shifted into their corrected location. The delivery <br />tiling scheme of the orthophotos will be as specified by each partner. Uncompressed <br />.tlr/trw and MrSID compressed .sid/sdw format images in both color and black/white will <br />be provided on DYD. <br /> <br /> <br />