发明授权
- 专利标题: Two-stage local and global fingerprint matching technique for automated fingerprint verification/identification
- 专利标题(中): 两级本地和全球指纹匹配技术,用于自动指纹验证/识别
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申请号: US09611951申请日: 2000-07-06
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公开(公告)号: US06778685B1公开(公告)日: 2004-08-17
- 发明人: Xudong Jiang , Wei Yun Yau , Wee Ser
- 申请人: Xudong Jiang , Wei Yun Yau , Wee Ser
- 优先权: SG9903290 19990708
- 主分类号: G06K900
- IPC分类号: G06K900
摘要:
A method for determining a degree of match between a search fingerprint and a reference fingerprint comprises the following steps: a) Extracting at least one first search feature from a first region of said search fingerprint thereby forming a local search feature vector, b) Extracting at least one second search feature from a second region of said search fingerprint thereby forming a global search feature vector, whereby said second region comprises said first region, c) Determining a first similarity degree by comparing said local search feature vector with a local reference feature vector, d) Determining a second similarity degree by comparing said global search feature vector with a global reference feature vector of said reference fingerprint and using said first similarity degree, e) Determining said degree of match from said second similarity degree.
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