此程序实现图象增强的功能，采用直方图均衡化的方法来实现图像增强。,This procedure realize the function of image enhancement using histogram equalization method to achieve image enhancement.

matlab图像增强包括直方均衡，平滑，锐化，具体实现源代码,matlab image enhancement, including straight side balanced, smooth, sharpen, the specific implementation source code