Finger vein image region-of-interest segmentation method based on active contour method

The invention provides a finger vein image region-of-interest segmentation method based on an active contour method, and the method comprises the following steps: 1, detecting a finger edge through a horizontal Sobel operator, and obtaining a series of maximum response value points as an initial horizontal point set for marking the finger edge; 2, performing iteration processing on the initial horizontal point set through a Chan-Vese model to obtain a finger edge image containing a small-area connected domain; and step 3, through post-processing operation and in combination with connected domain analysis, removing a connected domain smaller than 1/10 of the image to obtain a finger vein image segmentation mask, and completing segmentation of the region of interest. The method is a process extending from local to global, has better robustness, and obtains a very ideal effect in cooperation with partial morphological operation and connected domain analysis processing. 本发明提出了一种基于主动轮廓法的指静脉图像感兴趣区域分割方法，包括以下步骤：步骤1，利