计算机应用与软件
計算機應用與軟件
계산궤응용여연건
COMPUTER APPLICATIONS AND SOFTWARE
2014年
10期
220-223
,共4页
客观质量评价%图像划分%结构相似性(SSIM)%图像内容
客觀質量評價%圖像劃分%結構相似性(SSIM)%圖像內容
객관질량평개%도상화분%결구상사성(SSIM)%도상내용
Objective quality assessment%Image partition%Structure similarity (SSIM)%Image content
图像质量评价的客观方法弥补了主观方法的费时费力，不具有移植性的问题。提出一种基于图像内容划分，结合结构相似性理论SSIM（Structure Similarity Image Index）的全参考客观图像质量评价方法PSSIM（Partition SSIM）。该方法结合图像梯度和图像划分，将图像边界区域划分为保持边界区和变化边界区。另一方面摒弃经验参数，结合LIVE图像库中数据计算出保持边界区域权重参数λ＝0．35时，主客观评价一致性最高。实验表明，PSSIM方法具有较强的通用性，较好地符合人的主观视觉感知质量。
圖像質量評價的客觀方法瀰補瞭主觀方法的費時費力，不具有移植性的問題。提齣一種基于圖像內容劃分，結閤結構相似性理論SSIM（Structure Similarity Image Index）的全參攷客觀圖像質量評價方法PSSIM（Partition SSIM）。該方法結閤圖像梯度和圖像劃分，將圖像邊界區域劃分為保持邊界區和變化邊界區。另一方麵摒棄經驗參數，結閤LIVE圖像庫中數據計算齣保持邊界區域權重參數λ＝0．35時，主客觀評價一緻性最高。實驗錶明，PSSIM方法具有較彊的通用性，較好地符閤人的主觀視覺感知質量。
도상질량평개적객관방법미보료주관방법적비시비력，불구유이식성적문제。제출일충기우도상내용화분，결합결구상사성이론SSIM（Structure Similarity Image Index）적전삼고객관도상질량평개방법PSSIM（Partition SSIM）。해방법결합도상제도화도상화분，장도상변계구역화분위보지변계구화변화변계구。령일방면병기경험삼수，결합LIVE도상고중수거계산출보지변계구역권중삼수λ＝0．35시，주객관평개일치성최고。실험표명，PSSIM방법구유교강적통용성，교호지부합인적주관시각감지질량。
Objective method of image quality assessment has overcome the problems of time and labour-consuming and without portability that the subjective method has.In this paper,we propose an objective image quality assessment method with full-reference,named as PSSIM, which is based on image content partitioning and combines the structure similarity (SSIM)theory.The method integrates the image gradient with image partitioning,divides the image boundary region into boundary preserving area and boundary varying area.On the other hand,it gets rid of the empirical parameters and calculates in conjunction with the data in LIVE image library that when the weight parameter of the boundary preserving areaλ=0.35,the consistency of the subjective and objective assessment reaches the highest.Experiment shows that the PSSIM has quite high universality,and well complies with the quality of human subjective visual perception.
