Contour Covariance: A Fast Descriptor for Classification

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Yu, Xiaohan
Xiong, Shengwu
Gao, Yongsheng
Yuan, Xiaohui
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2019
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Taipei, Taiwan

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Abstract

This paper presents a novel shape descriptor to effectively and efficiently characterize the local image statistics. The proposed descriptor, termed contour covariance (CC), characterizes covariance features driven by a moving point on the shape contour at multiple scales. To calculate the covariance matrices, three basic features including texture, intensity and distance map, are extracted from the object image. Based on coefficients of the obtained covariance matrices, the proposed CC descriptor is compact yet informative, as well as invariant to rotation, translation and scale. The experimental results on two databases demonstrate the superiority and efficiency of the proposed method among the state-of-the-art methods for shape classification.

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2019 IEEE International Conference on Image Processing (ICIP)

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2019-September

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Artificial intelligence

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Yu, X; Xiong, S; Gao, Y; Yuan, X, Contour Covariance: A Fast Descriptor for Classification, 2019 IEEE International Conference on Image Processing (ICIP), 2019, 2019-September, pp. 569-573