图象增强作为图象处理常用的工具，目的是为了消除原因图象图象边缘模糊，对比度差等缺点，增强图象的视觉效果和加以后的处理工作提供方便，文中提出的算法基于Haralick的斜模型和Beghdadi的对比度增强算法。

Image enhancement is a common procedure in order to enhance the contrast, sharpen the edge and optimize the visual quality of the input image, so that the resulting processed image is more suitable for a given application. The algorithm proposed in this paper, which is based on the sloped-facet model of Haralick and the contrast enhancement technique of Beghdadi, can enhance image efficiently while reducing noise, and it can preserve the original information of image perfectly.