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《民族语言文字信息技术研究——第十一届全国民族语言文字信息学术研讨会论文集》2007年
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A Location Method Based on Eight- Neighborhood Chain Code for Palmprint Image

【摘要】:正The crucial issue of precise location for on-line palmprint image was to detect corner of hand-shape contour accurately. The existing corner detection algorithm cannot extract corner useful for location automatically. Through analyzing the regularity of chain-code of hand-shape contour , a rapid and effective corner-detection method was proposed in this paper. Firstly, the method of LOG operator and eight neighborhood boundary -tracking algorithm was made use of to extract the hand-shape contour and its chain-code. Then, according to the regularity of hand-shape contour chain-code around comer, the corner of hand-shape contour was detected accurately. Finally, establish a coordinate system according to the corner detected and locate the palmprint image. The experiment results demonstrate the effectiveness and rapidness of the proposed method.

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中国重要会议论文全文数据库 前1条
1 ;A Location Method Based on Eight- Neighborhood Chain Code for Palmprint Image[A];民族语言文字信息技术研究——第十一届全国民族语言文字信息学术研讨会论文集[C];2007年
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