一种基于色差的逆半调图像质量评价方法  

An Image Quality Assessment Algorithm on Color Inverse Halftoning Based on CIE DE2000 Formula

作　　者：孔月萍[1] 姜楠[1] 

机构地区：[1]西安建筑科技大学信控学院

出　　处：《微计算机信息》2008年第12期310-312,共3页Control & Automation

基　　金：国家部委预研基金项目(51416050205DZ0144);陕西省自然科学基金项目(2004F32);陕西省教育厅专项科研计划项目(04JK244)

摘　　要：鉴于CIE 1976L色差公式在小色差计算上表现出的不均匀性,将CIE DE2000色差公式与人眼视觉系统特性相结合,改进了一种基于CIE 1976L色差公式的彩色逆半调图像质量评价算法。实验验证,改进后的评价算法较原算法不仅更符合HVS特性,而且计算精度更高,生成的色差图能够比较直观、准确地反映重建图像质量。The color difference calculated by CIE 1976 L formula doesn’t match the characteristics of Human Visual System well es-pecially when the two colors are close. An improved quality assessment algorithm on inverse halftoning image is proposed,in which CIE DE2000 formula and the characteristics of Human Visual System have been applicated. The experimental results indicate that the improved one correlates better with Mean Opinion Score than the original one,and the color difference map can reflect the quality of...

关 键 词：逆半调 图像质量评价 CIE DE2000 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]