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長軌道衛星影像參數之校正方法 Method of Generating Positioning Coefficients for Strip-based Satellite Image
專利名稱 長軌道衛星影像參數之校正方法 Method of Generating Positioning Coefficients for Strip-based Satellite Image
申請日 (校編號) 2006/05/30  (094040US)
2006/02/16  (094040TW)
專利證書號 7,783,131  美國
I301707 中華民國
專利權人 國立中央大學
發明人 陳良健、張智安、劉建良、陳哲俊


技術摘要:
The present invention provides coefficient for a strip-based image taken by a satellite. By using the coefficient, the absolute error of the image can be made smaller than two pixels. Therefore, the accuracy of the image is high. The present invention can be applied to any pushbroom scaning satellite.

解決的問題或達成的功效:
The main purpose of the present invention is to generate positioning coefficients for a strip-based image obtained by a satellite along an orbit, where the geometric adjustment is speeded up and the accuracy of the on-board data are improved through using a small number of GCPs.

應用領域:
generating positioning coefficients

適用產品:
影像處理

IPC:
G01C11/025 ; G01S5/16

Claim 1:
1. A method of generating positioning coefficients for a strip-based satellite image, comprising steps of: (a) obtaining a preliminary orbit by using first on-board data; (b) correcting said preliminary orbit by using at least one ground control point (GCP) and modifying said first on-board data to obtain second on-board data; (c) processing a back projection to obtain a plurality of virtual control points (VCPs); and (d) processing said VCPs with a least squares adjustment to obtain a plurality of positioning coefficients.

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