介绍了一种基于目标灰度门限和目标之间灰度距离门限的区域自动阈值检测法,用该方法检测出图像区域的阈值进行目标初分割,然后结合形态学中的开启和闭合方法对初分割后的二值图像进行双滤波,再用一种新的区域边缘跟踪标注法对其进行跟踪和标注,找出每个目标的包络矩形坐标,用其对原图进行区域定位,从而可以提取出原图中包含目标的小区域。 An automatic threshold detection method based on the gray threshold of the target gray-level threshold and the threshold of the gray-level threshold of the target is introduced. The threshold of the image area is detected by this method and the initial target segmentation is carried out. Then, combining with the morphological opening and closing methods, The divided binary image is double filtered and then tracked and labeled with a new method of edge tracking and labeling to find out the envelope rectangle coordinates of each target. Extract the small area containing the target in the original image.