一种基于色彩保持的低照度图像增强算法  

A HUE PRESERVING BASED ALGORITHM FOR LOW-ILLUMINATION COLOUR IMAGE ENHANCEMENT

作　　者：蔡利梅[1] 钱建生[1] 罗驱波[1] 夏林稳[1] 张明胜[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《计算机应用与软件》2009年第3期226-227,243,共3页Computer Applications and Software

摘　　要：保持色彩不变是彩色图像增强的一个重要问题。针对低照度图像,提出一种快速保持色彩增强方法,采用抛物线函数进行亮度增强,获得亮度增益后,对RGB值进行同比增强,在增强亮度的同时,保持色彩不变。实验表明,本算法运算速度快且增强效果良好。Hue preserving is an essential requirement for colour image enhancement. In this paper, we proposed a fast technique in providing hue preserving and enhancement which can be applied to the low-illumination colour image. The technique uses parabola function to enhance the brightness, and then gets the scaling to adjust the RGB value with luminance gain acquired. The hue will keep unchanged while the brightness is increasing. Experimental tests on numerous scene images show that the proposed technique is efficient in enhancement and much faster in computation than the others addressing the same problem.

关 键 词：低照度 图像增强 色彩保持 抛物线函数 

分 类 号：TP311.1[自动化与计算机技术—计算机软件与理论] U666.7[自动化与计算机技术—计算机科学与技术]