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<br />~enL ~y: HUUH1GU~L A',U HUGG1NS lNC; <br /> <br />~12 .:0:31 81j,:. <br /> <br />Jun-6-00 1 :~/PM; <br /> <br />air" <br /> <br />Work Plan <br />Page -3- <br /> <br />3. Interior orientation is performed ",:hereby calibrated image fiducial marks <br />are measured to establish a photo coordinate system. <br /> <br />4. Exlerior orientation is performed, whereby coordinates and angles <br />representing camera position and attitude (exterior orientation) arc <br />determined by aerotriangulation. The exterior orientation fa;...'ilitates <br />transforming the photo coordinates to ground coordinates. <br /> <br />5, Di fferential rectification is pertormed using an algorithm (thal utilizes an <br />elevati{m model in conjunction with the exterior orientation to correct <br />displacement of ground features) to resample the image producing a geo- <br />referen.ced orthophoto. <br /> <br />6. Each digital orthophoto image is checked tor accuracy on a woIkSlalion. <br /> <br />7. ADS will deliver digital data in HMR fonnat compatible with Rodriguez <br />& Huggins, Inc.'s DesCartes computer system. Orthophoto image files <br />will be ge(Jgrdphically referenced and delivered in HMR format, ready to <br />be displayed. The output pixel size will be 0.6', as specified by Rodriguez <br />& Huggins. <br /> <br />lJ! Schedule <br /> <br />Schedule to be determined by mutual agreement. <br /> <br />7.0 Items To Be Delivered <br /> <br />Aerial Photography: <br />I. One (l) set of contact prints. <br /> <br />Digital Mapping Data.: <br />1. Digital terrain model (DTM) data in GeoPak formal. <br /> <br />Digital Orthophotos: <br />1. Digital onhophotos with 0.6' pixels in HMR format on CD-ROM. <br /> <br />~fRIAt DATA 5Ell\'1C[. INC. <br />