Abstract
Scanning digital aerial images as data source, using PhotoShop software and MapGis software measurement pixel coordinates of the 8frame point on photo , according to the camera parameters file provided fiducial mark on the image plane coordinate system coordinates the theory, using affine transformation method and bilinear transformation method, calculated the interior orientation parameters. Basing on this parameter calculates residual error of frame point coordinate, analyse and compare residual error which obtained by two kinds of measurement frame point pixel coordinates .Research shows that, the directional accuracy by using the MapGis measurement frame point pixel coordinates is higher than that by using PhotoShop measurement;
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