汪祖辉,孙刘杰,邵雪,包观笑,于海琦.BIQI和JND相结合的图像增强客观评价方法[J].光电子激光,2016,27(6):675~680 |
BIQI和JND相结合的图像增强客观评价方法 |
An objective evaluation method for image enhancement based on combination of JND and BIQI |
投稿时间:2015-10-29 |
DOI: |
中文关键词: (BIQI) 临界可见偏差(JND) 人眼视觉 图像增强 客 观评价 |
英文关键词:blind image quality index(BIQI) just noticeable difference(JND) human vi sion image enhancement objective evaluation |
基金项目:上海市教委科研创新重点(13ZZ111)资助项目 (上海理工大学 出版印刷与艺术设计学院,上海 200093) |
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中文摘要: |
提出一种结合盲图像质量指标(BIQI )和临界可见偏差(JND)的图像增强 客观评价方法。方法基于Retinex理论,将测试图像分成反射图像和照度图像 ,分别对反射图像和照度图 像进行BIQI和JND评分,得到的评分之和作为图像增强客观评价得分。对原图 像失真和背景亮 度的变量控制系列的实验表明,Retinex分解得到的反射图像只受失真的种类 和失真程度影响,而照度图像代表 原图像环境光照信息具有亮度阈值效应;应用本文算法对增强后的图像评分得到Score的 最高分为 0.609,与主观评价结果一致;而PSNR、SSIM的评分都是和原图像本身比较, 不能表明图像增强效果。实验结果表明,本文算法的评价结果与主观视觉一致,能用于定量 对图像增强进行客观评价。 |
英文摘要: |
This paper presents an objective evaluation method f or image enhancement combining blind image quality index (BIQI) with just noticeable difference (JND).The metho d divides the test image into a reflection image and an illumination image base d on Retinex theory,and the reflection image and the illumination image wer e evaluated respectively.The sum of the scores is regarded as the score of the objective evaluation of image enha ncement.A series of experiments on the variable control of the original image distortion and background brightness show that the reflected image is affected only by the type and degree of distortion,while the illumination image repre sents the original image of the environmental light information and has the effe ct of luminance threshold.After image enhancement,the algorithm in this paper can get the highest score of 0.609〖KG - 1/6〗3and the result is consistent with subjective evaluation result.As peak signal-to-noise ratio (PSNR) and structural similarity (SSIM) scores are both compa red with those of the original image,they can not reflect the effect of imag e enhancement.The experimental results s how that the algorithm can objectively evaluate the image enhancement and the ef fect is good. |
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