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高空間解析度航運遙測影像正射校正之方法 METHOD OF ORTHO-RECTIFICATION FOR HIGH-RESOLUTION REMOTE SENSING IMAGE
專利名稱 高空間解析度航運遙測影像正射校正之方法 METHOD OF ORTHO-RECTIFICATION FOR HIGH-RESOLUTION REMOTE SENSING IMAGE
申請日 (校編號) 2007/08/15  (096022US)
2007/04/04  (096022TW)
專利證書號 7,865,039  美國
I322261 中華民國
專利權人 國立中央大學
發明人 陳良健、李訢卉、陳哲俊、饒見友


技術摘要:
A high-resolution remote sensing image is processed through a true ortho-rectification. A totally new idea of H-buffer is provided to store heights of objects on the ground. The ortho-rectification includes a hidden analysis, a hidden detection and a hidden compensation. The process uses polygon patch of a building or a roadway as process unit. In the end, seam lines after hidden compensation are smoothed. The whole process time is reduced in calculations, assures quality of the orthoimage, and meets a requirement of a high-accuracy and high-resolution digital mapping

解決的問題或達成的功效:
The main purpose of the present invention is to provide a polygon patch approach based on an invented H-Buffer data for hidden analysis.

應用領域:
ortho-rectification

適用產品:
影像處理

IPC:
G06T3/00

Claim 1:
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.

聯繫方式
聯絡人:研發處智權技轉組 與我連絡
電話:03-4227151 #27076、27077 網址:http://www.caic.ncu.edu.tw/
地 址: 32001桃園市中壢區中大路300號
 
                 
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