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Repeatedly smoothing, discrete scale-space evolution and dominant point detection
Li, BC
1996-06-01
发表期刊PATTERN RECOGNITION
卷号29期号:6页码:1049-1059
文章类型Article
摘要In this paper, the Fourier analysis is used to derive the properties of an evolving curve. An arbitrary-kernel-repeatedly-smoothing (AKRS) evolution of a curve is then introduced. It is shown that when the repeated number is large, the AKRS evolution of a curve is an approximately discrete implementation of the scale-based evolution of this curve in the Euclidean space. As a special case, an exponential repeatedly smoothing is proposed to implement the scale-based evolution. It is shown that in addition to its simple implementation and its desired approximation to a Gaussian kernel, an exponential function is a function that when it is selected as a repeatedly smoothing kernel, the motion (both magnitude and direction) of a point on a curve from the (i - 1)th to ith instant is equal to the curvature of the ith smoothed curve at this point. Finally, a perimeter-controlled-evolution method is proposed to extract dominant points. It is shown experimentally that the proposed method is robust to noise, object rotation and object changes in sizes. (C) 1996 Pattern Recognition Society. Published by Elsevier Science Ltd.
关键词Dominant Point Detection Curve Evolution In Scale Space Exponential Kernel Diffusion Equation Repeatedly Smoothing Curvature
WOS标题词Science & Technology ; Technology
关键词[WOS]CORNER DETECTION ; PLANE-CURVES ; REPRESENTATION
收录类别SCI
语种英语
WOS研究方向Computer Science ; Engineering
WOS类目Computer Science, Artificial Intelligence ; Engineering, Electrical & Electronic
WOS记录号WOS:A1996UN18400012
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文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/21901
专题09年以前成果
作者单位CHINESE ACAD SCI,INST AUTOMAT,NATL LAB PATTERN RECOGNIT,BEIJING,PEOPLES R CHINA
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Li, BC. Repeatedly smoothing, discrete scale-space evolution and dominant point detection[J]. PATTERN RECOGNITION,1996,29(6):1049-1059.
APA Li, BC.(1996).Repeatedly smoothing, discrete scale-space evolution and dominant point detection.PATTERN RECOGNITION,29(6),1049-1059.
MLA Li, BC."Repeatedly smoothing, discrete scale-space evolution and dominant point detection".PATTERN RECOGNITION 29.6(1996):1049-1059.
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