文件名称:
3D TOUCHLESS FINGERPRINTS: COMPATIBILITY WITH LEGACY ROLLED IMAGES
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文件大小: 886kb
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上传时间: 2009-11-02
详细说明： 3D TOUCHLESS FINGERPRINTS: COMPATIBILITY WITH LEGACY ROLLED IMAGES Fingerprints are traditionally captured based on contact of the finger on paper or a platen surface. This often results in partial or degraded images due to improper finger placement, skin deform ation, slippage and smearing, or sensor noise from wear and tear of surface coatings. A new generation of touchless live scan devices that generate 3D representation of fingerprints is appearing in the market. This new sensing technology addresses many of the problems stated above. However, 3D touchless fingerprint images need to be compatible with the legacy rolled images used in Automated Fingerprint Identification Systems (AFIS). In order to solve this interoperability issue, we propose a unwrapping algorithm that unfolds the 3D fingerprint in such a way that it resembles the effect of virtually rolling the 3D finger on a 2D plane. Our preliminary experiments show promising results in obtaining touchless fingerprint images that are of high quality and at the same time compatible with legacy rolled fingerprint images. ...展开收缩
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