基于双线性插值的CLAHE算法研究与实现  

Research and Implementation of CLAHE Algorithm Based on Bilinear Interpolation

作　　者：刘巧玲[1] 李想[1] 明旭[1] 

机构地区：[1]成都大学电子信息工程学院,四川成都610106

出　　处：《成都大学学报（自然科学版）》2015年第2期149-151,共3页Journal of Chengdu University（Natural Science Edition）

摘　　要：针对现有的低能见度图像增强的AHE算法(自适应直方图均衡)和CLAHE算法(限制对比度的自适应直方图均衡化)存在复杂度高及效率低的问题,提出了基于双线性插值的CLAHE算法.利用双线性插值方法降低CLAHE算法的时间复杂度,并在TMS320C6748开发板上对其进行优化.实验结果表明,该算法无论是增强效果还是处理速率都明显优于原CLAHE算法.In view of the fact that the existing enhancement algorithms of images in low visibility, AHE （adaptive histogram equalization） algorithm and CLAHE（contrast limited adaptive histogram equalization） algorithm, have the problems of high complexity and low efficiency, this paper presents the CLAHE algo- rithm based on bilinear interpolation. This algorithm utilizes b/linear interpolation to reduce the time complexity of CLAHE algorithm, and is implemented on the development board of TMS320C6748. The experi- mental results show that the algorithm is much better than the original CLAHE algorithm in terms of either enhancement effect or processing speed.

关 键 词：低能见度 图像增强 双线性插值算法 CLAHE TMS320C6748 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]