数字图像的边缘检测是图像分割、目标区域的识别、区域形状提取等图像分析领域十分重要的基础，图像理解和分析的第一步往往就是边缘检测，目前它以成为机器视觉研究领域最活跃的课题之一，在工程应用中占有十分重要的地位。本文向读者简单介绍一下这个技术，并给出了在Visual C++环境下实现的代码。-Digital Image Edge detection is image segmentation, target recognition in the region, regional shape extraction image analysis based on the importance of the area, image analysis and understanding is often the first step edge detection, and now it's machine vision to become the most active area of research one of the tasks of the project application occupy a very important position. This paper to readers a brief introduction of this technology, and given the environment in Visual C under the code.