图像分割是图像处理和计算机视觉的重要研究领域。通过贝叶斯算法应用于图像分割，利用其较好的寻优能力搜索到图像的最佳阈值，达到较好的图像分割效果，并拓展了算法的应用领域．针对图像在动态阈值选取难的问题(Image segmentation is an important research field of image processing and computer vision. The Bayesian algorithm is applied to image segmentation, the better optimization ability to search the best threshold image, achieve better image segmentation result, and expand the application field of the algorithm.)