https://scholars.lib.ntu.edu.tw/handle/123456789/150580
標題: | A moment-based approach for deskewing rotationally symmetric shapes | 作者: | SOO-CHANG PEI Horng, Ji-Hwei |
公開日期: | 八月-1996 | 卷: | 1 | 起(迄)頁: | 248-252 | 來源出版物: | Proceedings - International Conference on Pattern Recognition | 摘要: | The covariance matrix of a rotationally symmetric shape is a scalar identity matrix. We apply this property of covariance matrix to deskew the skewed shape of rotational symmetry. The parameters of the deskew transformation matrix are solved by letting the covariance matrix of the transformed shape be equal to a scalar identity matrix. Then, the rotationally symmetric shape can be recovered by the deskew transformation matrix. The method does not rely on continuous contours, since only second-order moments of the input shape are required to be computed. Experimental results are also presented. © 1996 IEEE. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/2007041910031978 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898769657&doi=10.1109%2fICPR.1996.546028&partnerID=40&md5=3f05cb62313f9cf423429f1c3fb97335 |
ISSN: | 10514651 | DOI: | 10.1109/ICPR.1996.546028 | SDG/關鍵字: | Covariance matrix; Pattern recognition; De-skewing; Identity matrices; Rotational symmetries; Second order moment; Transformation matrices; Linear transformations |
顯示於: | 電機工程學系 |
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00546028.pdf | 351.69 kB | Adobe PDF | 檢視/開啟 |
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