Application of inertia ellipse in code marker matching |
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| Authors: | Fang Xu Weiwei Jiang Qing He Xiaobin Hu |
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| Institution: | 1. School of Geodesy and Geomatics , Wuhan University , Wuhan , China;2. Key Laboratory of Precise Engineer &3. Industry Surveying , State Bureau of Surveying and Mapping , Wuhan , China;4. School of Geodesy and Geomatics , Wuhan University , Wuhan , China |
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| Abstract: | In close-range photogrammetry, 3D information acquisition is based on image matching. The application of code marker helps to improve the level of automatic matching and the matching accuracy. This paper investigates the application of inertia ellipse algorithm to code marker matching. We can calculate the inertia ellipse of a target with a certain boundary. First, the method is applied to a single code marker; the angle and scaling are valid. Then, the paper introduces the multi code markers matching method by the inertia ellipse. Rotation and scaling changes of homonymy images can be calculated by inertia ellipse algorithm. These parameters can be used for code marker matching in arbitrary attitude close-range photogrammetry. |
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| Keywords: | close-range photogrammetry inertia ellipse code marker matching |
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