介绍了增强图像质量的若干方法,包括图像平滑处理、图像锐化处理以及Windows API函数SetStretchBltMode的调用，阐述了其原理、算法及该原理在Windows 平台上以C++ Builder 为开发工具的具体程序实现。-Introduced a number of ways to enhance the image quality, including image smoothing, image sharpening processing and call Windows API functions SetStretchBltMode expounded his theory, algorithms and the principles of the Windows platform in C++ Builder tools for the development of specific procedures for implementation.