Patent Document ID: 7865039
Application ID: 11889716
Patent Flag: 1

Claim One:
1. A method of true ortho-rectification for high-resolution remote sensing image, comprising steps of: (a) processing a hidden analysis to ground objects in a major image with object-image transformation parameters, together with three-dimensional (3D) building models and 3D roadway models, to obtain height buffer (H-buffer) data by using polygon patch as basic unit for processing; (b) processing a hidden detection to said ground objects with said H-buffer data to obtain pixels to be stored in an index map, each said pixels are classified into hidden areas, terrain surfaces, buildings and roadways; (c) processing a hidden compensation to said index map to obtain a said hidden compensation, wherein each of said hidden areas fetches a gray value from an slave image; wherein visible areas comprises said terrain surfaces, said buildings and said roadways; and wherein each of said visible areas interpolate a gray value from said major image; (d) smoothing gray values of seam lines through a weighting average for obtaining a true orthoimage, wherein said seam lines are obtained around said hidden areas after said hidden compensation.