CAJ | 학술논문

针对现有图像质量评估方法不能有效评价所有失真类型图像、计算量大等问题进行了研究，受人眼视觉特性的启发，提出了一种新的基于图像边缘结构相似性的全参考质量评价方法。该方法利用图像边缘梯度对图像失真的敏感性不同，通过Prewitt算子计算水平和竖直方向梯度向量绝对值和，进而定义了两种基于边缘结构相似性的图像质量评价标准：图像梯度结构相似度均值（GSSM）和图像梯度结构相似度标准差（GSSD）。标准图像数据库上的实验结果表明，GSSD方法优于GSSM和现有的全参考图象质量评价方法，主客观分值一致性好，并且计算简单，适合应用于大规模的图像质量评价。
침대현유도상질량평고방법불능유효평개소유실진류형도상、계산량대등문제진행료연구，수인안시각특성적계발，제출료일충신적기우도상변연결구상사성적전삼고질량평개방법。해방법이용도상변연제도대도상실진적민감성불동，통과Prewitt산자계산수평화수직방향제도향량절대치화，진이정의료량충기우변연결구상사성적도상질량평개표준：도상제도결구상사도균치（GSSM）화도상제도결구상사도표준차（GSSD）。표준도상수거고상적실험결과표명，GSSD방법우우GSSM화현유적전삼고도상질량평개방법，주객관분치일치성호，병차계산간단，괄합응용우대규모적도상질량평개。
Study for the existing image quality assessment methods can not effectively evaluate all types of image distortion, and large amount of calculation problems.This paper proposed a new full reference image quality assessment method based on edge structure similarity inspired by the human visual system.Considering the image gradient sensitivity was differrent when ob-serving different distortion image,the method computed the sum of horizontal gradient absolute value and vertical gradient abso-lute value by Prewitt filter operator,then proposed two image quality evaluation criteria based on edge structure similarity:im-age gradient structure similarity mean (GSSM)and image gradient structure similarity standard deviation(GSSD).Experimen-tal results on standard image database show that the GSSD methods is superior to GSSM method and existing full reference im-age quality assessment methods .It obtains high correlations with subjective quality evaluations and low calculation,and is more suitable for large-scale image quality assessment.