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《Science of Surveying and Mapping》 2009-06
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Estimation of deviation between circular target center and ellipse imaging center in close-range photogrammetry

TAN Yan①②,ZOU Zheng-rong①(①Institute of Physics and Geomatics Engineering,Central South University,Changsha 410083,China;②Pan Yu Sub-bureau of Land Resources and Housing Management of Guangzhou Municipality,Guangzhou 511400,China)  
The circular target had broad appication in close-range photogrammetry,the image of the circular target appeared as an ellipse because the target plane could not be completely parallel to the image plane.The deviation between circular target center and ellipse imaging center is inevitable if circular target is oversized.From collinear condition equation of photogrammetry,a deviation correction formula was derived based on least square ellipse fitting algorithm.The objective is to analyze distribution rule and the relations among deciations,so as to reduce the effect of deviation.
【CateGory Index】: P234.1
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