Unlike the skin on most parts of our body, which is smooth and contains hair and oil glands, the skin on the palms and soles exhibits a flow-like pattern of ridges and valleys (sometimes referred to as furrows), and contains no hair or oil glands. These papillary ridges on the finger, called friction ridges, help the hand to grasp objects by increasing friction and improving the tactile sensing of surface textures. The friction ridge skin is composed of two major layers: dermis (inner layer) and epidermis (outer layer).
KeywordsFingerprint Image Ridge Count Fingerprint Recognition Ridge Pattern Minutia Point
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