"Figure" is the distribution of object transmitted light or reflected light, "like" is an impression or understanding of the human visual system to receive in the brain. The image is the combination of both. Human gets the external information is the auditory, visual, tactile, smell, taste, etc., but most (about 80%) from the image information received by the visual. Image processing is processed to meet image information to meet the needs of people's visual psychology and practical applications. Simply put, the processing of various purposes of the image relying on the computer We are called digital image processing. The purpose of the early digital image processing is to improve the quality of the image in order to satisfy the visual effect of the person. In the processing, the quality of the image is input, and the output is an image, the commonly used image processing method has an image. Enhance, restoration, etc. With the development of computer technology, there is a type of image processing to be object-like, the purpose of processing is to automatically identify the target, which is called image recognition, because this is involved in some complex mode identification theory, So our subsequent lectures only discuss the most basic content. Since there are often digital image processing in many practical applications, some algorithms are involved, this is also a content of many programming enthusiasts, our lecture is to discuss how to use Microsoft's Visual C development tools. Implement some common digital image processing algorithms, discusses the theory of image processing, and gives the source code for VC implementation.