A Finger Vein Feature Extraction and Matching Recognition Method
A finger vein feature and finger vein technology, applied in the field of finger vein feature identity authentication technology, can solve problems such as increased rejection rate, reduced possibility of successful comparison, and poor system reliability, so as to improve recognition speed, identify The effect of stable rate and improved recognition accuracy
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[0030] The present invention is described in more detail below in conjunction with accompanying drawing example:
[0031] 1. Acquisition of infrared images of finger veins
[0032] The basic principle of the selected finger vein collection device is to use near-infrared rays to irradiate the finger, and the image sensor senses the light transmitted from the finger. The key point is that the hemoglobin flowing into the venous red blood cells will lose deoxygenation due to irradiation, and the reduced hemoglobin will absorb near-infrared rays with a wavelength near 760nm. In this embodiment, an infrared light source of 850nm is used, resulting in Less transmission results in a pattern of veins on the imaging device. Therefore, the selected finger vein collector uses the strength of the transmitted near-infrared rays to highlight the veins.
[0033] 2. Preprocessing of finger vein images
[0034] In order to extract the vein veins of the finger, the original finger vein image ...
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