Finger vein feature thinning method, terminal and system and storage medium

The invention provides a finger vein feature thinning method, which comprises the steps of A1, extracting finger vein lines and performing single-pixel conversion processing; A2, searching along a line of pixel endpoints, and removing noise and shadow in the image; and A3, judging whether a fingerprint thinning boundary point is a savepoint or not, sequentially executing the step for four cycles,and gradually eliminating redundant pixel points. The finger vein feature thinning method and system solve problems that the existing fingerprint thinning method is incomplete in thinning and that theaccuracy of fingerprint recognition is affected because a general condition thinning algorithm has pixel redundancy after thinning an image, and provide a fast and efficient fingerprint thinning method. 本发明提供了种指静脉特征细化方法，所述方法包括以下步骤：A1：提取指静脉纹路并进行单像素转化处理，A2：沿着像素端点的线路搜索，去除图像中噪声与阴影；A3：判断指纹细化边界点是否为保存点并依次执行四个周期，逐步消除冗余像素点。本发明的种指静脉特征细化方法及其系统，解决了现有的指纹细化方法存在的细化不彻底、避免了般条件细化算法在细化图像后存在像素冗余，从而影响指纹识别的准确性的问题，提供种快速高效的指纹细化方法。