课程的目的学习了解BMP的图像的结构，学会对BMP图像进行各种处理，图像平滑是指用于突出图像的宽大区域、低频成分、主干部分或抑制图像噪声和干扰高频成分，使图像亮度平缓渐变，减小突变梯度，改善图像质量的图像处理方法。数字图像处理中图像锐化同样是一个重要的部分，其目的有两个：一是使灰度反差增强，增强图像的边缘，使模糊的图像变得清晰起来；这种模糊不是由于错误操作，就是特殊图像获取方法的固有影响。二是提取目标物体的边界，对图像进行分割，便于目标区域的识别等。通过图像的锐化，使得图像的质量有所改变，产生更适合人观察和识别的图像。-Course learning to understand the purpose of the structure of BMP image, learn to various processing of BMP image, the image smooth refers to the large area is used to highlight the image, the low frequency component, trunk or suppress image noise and interference of high frequency components, make the image brightness flat gradient, gradient decrease mutations, improve image quality of the image processing methods. Digital image processing, image sharpening, is also an important part of its purpose has two: one is to make the gray contrast enhancement, enhance image edges, makes fuzzy image become clear　This fuzzy is not due to wrong operation, it is the inherent influence of special image acquisition method. 2 it is to extract the boundary of the target object, the image segmentation, to facilitate the identification of the target area and so on. Through image sharpening, makes the quality of the image change, to create more suitable for human observation and identification of the i