这种方法通常用来增加许多图像的局部对比度，尤其是当图像的有用数据的对比度相当接近的时候。通过这种方法，亮度可以更好地在直方图上分布。这样就可以用于增强局部的对比度而不影响整体的对比度，直方图均衡化通过有效地扩展常用的亮度来实现这种功能。-This method is usually used to increase the local contrast of many images, especially useful when the image contrast data very close to the time. In this way, the brightness can be better distributed in the histogram. This can be used to enhance local contrast without affecting overall contrast, histogram equalization to extend through the effective brightness used to implement this functionality.