发明名称 |
Personal identification device and method |
摘要 |
The invention aims at providing personal identification in environments where non-contact is required, with high accuracy even though using a finger vein pattern images unclear and susceptible to positional deviations, wherein it has: a means for acquiring finger vein patterns without contact; a means for carrying out rotational correction using the outline of a finger as a method of taking out a vein pattern contained in the acquired image; a means for normalizing the position of the finger image with reference to the fingertip; a means for acquiring an overall vein pattern statistically by repetitively tracking regions of dark luminance intensities for a desired length from a desired position in the image; a matching means for comparing regions where vein patterns manifest vivid features; and a means for independent matching of subregions and evaluating positional deviations where matching is recognized.
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申请公布号 |
US2008008358(A1) |
申请公布日期 |
2008.01.10 |
申请号 |
US20070896664 |
申请日期 |
2007.09.05 |
申请人 |
HITACHI, LTD. |
发明人 |
MIURA NAOTO;NAGASAKA AKIO;MIYATAKE TAKAFUMI |
分类号 |
A61B5/117;G06K9/00;G06K9/60;G06T1/00;G06T7/00 |
主分类号 |
A61B5/117 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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