一种直接直方图修正方法

Direct Histogram Modification for Image Enhancement

图象增强中的直方图修正一般分为２种不同的方法：直方图均衡和直方图规定，这是因为传统的直方图规定［１］要经过２次直方图均衡。本文提出的方法通过将直方图均衡作为直方图规定的特例考虑，既可实现直方图均衡又可实现直方图规定，从而实现了这２种方法的统一，而且直方图规定的结果好于文献［１］方法。

In general, histogram equalization and histogram specification are regarded as two different histogram modification techniques in image enhancement because the latter is generally dependent on the former in the traditional method. In this paper, a new method for histogram modification is reported, in which histogram equalization is regarded as a special case of histogram specification, so it can be applied to either histogram equalization or histogram specification. And in the case of histogram specification, the result of the new method is better than that of the traditional method.