摘要
在彩色图像获取过程中,由于光照不均等原因导致采集的图像动态范围大,细节信息模糊.为此,提出了基于多色彩空间信息融合和同态滤波的彩色图像增强算法.首先,在RGB色彩空间上,分别对R、G、B分量进行同态滤波和自适应截取拉伸,消除光照影响,有效增强局部细节信息.然后,在HSV色彩空间上,利用由构造的非线性变换函数处理后的V分量,进行光照补偿.并且利用原图像H和S分量,恢复图像色彩信息.实验分析表明,本算法能够很好的压缩图像动态范围,增强亮暗区域的细节信息,并保持颜色的一致性.
In the process of color image acquisition,due to inhomogeneous illumination and other reasons,the collected images have features of large dynamic range and details blur.So this paper proposes a method for enhancing the color images based on information fusion of multi-color space and homomorphic filters.First,in RGB color space,the three components are processed by using the homomorphic filtering and the adaptive clipping stretch methods respectively to eliminate illumination effect and enhance the local details effectively.Then,in HSV color space,the V component of modified by the nonlinear transformation function structured is used to make illumination compensation to the image.And the H and S component of the original image is used to restore the color information.The experimental results suggest that the proposed method shows better in the aspects of dynamic range compression,enhancement of the detail of bright and dark areas and keeping the color consistency.
出处
《微电子学与计算机》
CSCD
北大核心
2014年第12期84-87,92,共5页
Microelectronics & Computer
关键词
图像增强
同态滤波
色彩空间
光照补偿
image enhancement
homomorphic filters
color space
illumination compensation
作者简介
党领茹 女,(1989-),硕士研究生.研究方向为数字图像处理.E-mail:danglingru@139.com.
朱丹 男,(1962-),研究员,硕士生导师.研究方向为成像跟踪、实时图像处理等.
佟新鑫 男,(1972-),研究员.研究方向为成像跟踪、实时图像处理等.
王玉良 男,(1981-),硕士研究生.研究方向为数字视频处理、电视跟踪、视频编码与通信.