液晶与显示2016，Vol.31Issue(6)：584-594,11.DOI:10.3788/YJYXS20163106.0584
一种结合人眼对比度感知特性的彩色图像压缩算法
Color image compression algorithm combining the human contrast perception characteristics
摘要
Abstract
In order to make the compressed images satisfy more with the human visual perception char-acteristics,a color image compression algorithm combined the human visual contrast sensitivity char-acteristics is proposed.Firstly,combining the characteristics of human visual contrast sensitivity and spectrum coefficients in transform domain of image,a method for calculating the angular frequencies of the images is proposed,and the calculating method of minimum error threshold of human eye detec-ting images is proposed according to the angular frequencies.Then taking the threshold as quantiza-tion step size,a method is proposed to quantize spectrum coefficients in transform domain of image. Finally Huffman coding algorithm is adopted to carry out encoding and decoding to realize image com-pression.And the simulation experiments for three color images is carried out .The results show that the average compression ratio,PSNR and SSIM of three color images and each component of the image are increased by 10.480 7%,6.987 9% and 2.649 4% respectively,compared with the technol-ogy of JPEG.It indicates that the image compression algorithm combined the human visual character-istics is better and more practical.关键词
图像压缩/人眼视觉特性/空间频率/结构相似度Key words
image compression/human visual system characteristics/spatial frequency/structural similarity index measurement分类
信息技术与安全科学引用本文复制引用
姚军财..一种结合人眼对比度感知特性的彩色图像压缩算法[J].液晶与显示,2016,31(6):584-594,11.基金项目
国家自然科学基金项目(No．61301237) （No．61301237）
陕西省科技新星计划项目(No．2015KJXX-42) （No．2015KJXX-42）
陕西省教育厅科研计划项目(No．15JK1139) （No．15JK1139）
