Sonar image segmentation method

The invention discloses a sonar image segmentation method, and the method comprises the steps of carrying out the filtering of a sonar image, and obtaining a first image; positioning a target bright area in the first image, performing local enhancement on an edge detection point of the target bright area by using an expansion operator, and superposing the enhanced target bright area in the first image to obtain a second image; segmenting a target bright region, a target dark region and a reverberation region in the second image by using a fuzzy weighted Tsallis entropy segmentation algorithm based on a two-dimensional histogram to obtain a third image; and carrying out post-processing on the third image to obtain a final segmented image. The invention can improve the segmentation accuracyof the target bright region, the target dark region and the reverberation region, is low in segmentation image noise, and remarkably improves the segmentation effect. 本发明公开一种声呐图像分割方法，对声呐图像进行滤波处理，得到第一图像；在第一图像中定位目标亮区，利用膨胀算子对所述目