A Novel Biometric System Based on Palm Vein Image

Vessels : Arteries and veins.

Arteries : oxygenated hemoglobin;

Veins: deoxygenated hemoglobin.

Deoxygenated hemoglobin absorbs light (700-1400 nm) => NIR.

Parts in which the veins lie will appear darker than the other parts.

Preprocessing

Median Filter: noise reduction, by ranked the neighbouring pixels according to brightness (intensity) and the median value becomes the new value for the central pixel.

Otsu’s Thresholding: select a suitable thershold to find the palm region.

ROI Segmentation

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