文档介绍了图像的平滑和锐化的相关知识，包括基本概念和原理，结合C++程序来对实例进行分析，是一篇很好的教程文档，短小精悍。-The document introduces related knowledge of image smoothing and sharpening, including the basic concepts and principles, combined with the C++ program to the analysis of the example, is a very good tutorial document, dapper.