图像分割是一种重要的图像分析技术。在对图像的研究和应用中，人们往往仅对图像中的某些部分感兴趣。这些部分常称为目标或前景（其他部分称为背景）。它们一般对应图像中特定的、具有独特性质的区域。为了辨识和分析图像中的目标，需要将它们从图像中分离提取出来，在此基础上才有可能进一步对目标进行测量，对图像进行利用。图像分割就是把图像分成各具特性的区域并提取出感兴趣目标的技术和过程。本文介绍了图像分割中的边缘检测算法。-Image segmentation is an important image analysis technology. In the study and using of the image, people often only the image of the portions of interest in. These portions is often referred to as the target or prospects (the other part is called the background ). They generally corresponding to images in particular, has the unique nature of the area. In order to identify and analyze the target in the image, which need to be extracted from the image, on the basis of this is likely to further target measurement, utilize the image. Image segmentation is to segment the image into regions with different characteristics and extract the target of interest to technology and process. This paper introduced the edge detection in the image segmentation algorithm.