关键词: 中值夹角链码, 中值迭代, 特征提取, 手掌静脉, 拒识率, 误识率

Abstract: An improved approach: median-length included angle chain, combined with the included angle chain was presented to extract the structural features of the palm vein. The way is to model a curve segment of palm vein textures by a number of variable-length line segments through media value iteration and let distance criterion control the fitting error, under permitted error, using the included angles sequence between a pair of neighboring line segments to represent the curve segment. Experimental results show that while the computation precision is ensured, the proposed algorithm still can reduce the computation and acquire the structural features of the palm vein.

Key words: media-length included angle chain, media value iteration, feature extraction, palm vein, False Reject Rate (FRR), False Accept Rate (FAR）