3D Touchless Fingerprints: Compatibility with Legacy Rolled Images
3D Touchless Fingerprints: Compatibility with Legacy Rolled Images
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DOI：
10.1109/bcc.2006.4341621
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发表时间：
2006-09
期刊：
影响因子：
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通讯作者：
Yi Chen;Geppy Parziale;Eva Diaz-Santana;Anil K. Jain
中科院分区：
文献类型：
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作者：
Yi Chen;Geppy Parziale;Eva Diaz-Santana;Anil K. Jain
指纹传统上是基于手指在纸或压板表面上的接触来捕获的。由于手指放置不当、皮肤变形、滑动和涂抹或表面涂层磨损引起的传感器噪声，这通常会导致部分或退化的图像。市场上出现了新一代的非接触式实时扫描设备，可以生成指纹的3D表示。这种新的传感技术解决了上述许多问题。然而，3D非接触式指纹图像需要与自动指纹识别系统（AFIS）中使用的传统滚动图像兼容。为了解决这个互操作性问题，我们提出了一种展开算法，以这样一种方式展开的3D指纹，它类似于一个2D平面上的3D手指几乎滚动的效果。我们的初步实验表明，在获得高质量的非接触式指纹图像，并在同一时间与传统的滚动指纹图像兼容的有希望的结果。
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 deformation, 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 an 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.