摘要
本文提出一种新的基于彩色双边滤波的彩色图像增强方法。该方法将彩色图像增强分为三部分:全局亮度调节、对比度增强和颜色恢复。全局亮度调节主要是对图像的整体亮度信息进行非线性调整,压缩图像的亮度动态范围;局部对比度增强主要是利用彩色双边滤波获得像素点所在邻域的背景亮度,由当前像素点的亮度与背景亮度之间的关系,通过非线性的方法增强图像局部对比度;最后通过颜色恢复算法恢复图像色彩。相关实验表明,本文所提方法可以获得很好的彩色图像增强效果。
In this paper, we propose a new method for color image enhancement based on color bilat- eral filter. The method is divided into three major parts： global luminance enhancement, local con- trast enhancement and color restoration. Global luminance enhancement changes the luminance infor- mation via non-linear adjustment to compress the dynamic range of the image. Local contrast enhance- ment enhances the local contrast by non-linear method, which units the relationship between the lumi- nance image of each pixel and the background information of its neighboring pixies after color bilateral filtering. Finally, a color restoration algorithm is used to convert the enhanced luminance image to a color image. Related experiments show that the method proposed has good effectiveness for color im- age enhancement.
出处
《中国体视学与图像分析》
2009年第2期143-146,共4页
Chinese Journal of Stereology and Image Analysis
基金
福建省自然科学基金(2008J0032)
厦门大学985二期信息创新平台(00002X07204)
厦门市科技计划高校创新项目(3502Z20083006)
