结构相似性指标(structural similarity index,SSIM index)是一种用以衡量两张数位影像相似程度的指标。当两张影像其中一张为无失真影像,另一张为失真后的影像,二者的结构相似性可以看成是失真影像的影像品质衡量指标。相较于传统所使用的影像品质衡量指标,像是峰值信噪比(PSNR),结构相似性在影像品质的衡量上更能符合...
Introduction— The Structural Similarity Index (SSIM) is a perceptual metric that quantifies image quality degradation* caused by processing such as data compression or by losses in data transmission. It is a full reference metric that requires two images from the same image capture— a reference...
在这里,经过一些实验总结,我们把K1设为0.01,K2设为0.03,然后用平均SSIM指数作为整幅图像的估计质量评价: (14) 其中X,Y为图像, 为局部SSIM指数在映射中的位置,MN为局部窗口的数量。 四、matlab实现 function [mssim, ssim_map,siga_sq,sigb_sq] = SSIM(ima, imb) % === %ssim的算法主要参考如下论文: %...
Very good matching was achieved for shadow acne, peter panning, and Z-fighting deteriorations, while IQM with the best detection rate proved to be the Structural Similarity Index Metric (SSIM). However, this metric generates noticeably worse results for the aliasing. Using SSIM, the artefacts ...
Introduction—TheStructural Similarity Index (SSIM)is a perceptual metric that quantifies image quality degradation* caused by processing such as data compression or by losses in data transmission. It is a full reference metric that requirestwoimages from the same image capture— a reference image ...
结构相似性指数(structural similarity index,SSIM), 出自参考文献[1],用于度量两幅图像间的结构相似性。和被广泛采用的L2 loss不同,SSIM和人类的视觉系统(HVS)类似,对局部结构变化的感知敏感。 SSIM分为三个部分:照明度、对比度、结构,分别如下公式所示: ...
The Structural Similarity (SSIM) Index is a recent IQA algorithm that has been shown to outperform not only the MSE, but other IQA algorithms such as the JND metric in measuring the perceptual quality of natural images [ 2 ]. A natural progression is to design algorithms that are optimized ...
The Structural Similarity Index (SSIM) is a perceptual metric that quantifies the image quality degradation that is caused by processing such as data compression or by losses in data transmission. This metric is basically a full reference that requires 2 images from the same shot,...
一、SSIM算法简介 SSIM(structural similarity index),结构相似性,是一种衡量两幅图像相似度的指标。该指标首先由德州大学奥斯丁分校的图像和视频工程实验室(Laboratory for Image and Video Engineering)提出。SSIM使用的两张图像中,一张为未经压缩的无失真图像,另一张为失真后... ...
指标结构相似性index结构相似相似指标构造相似性相似性 系统标签: similaritystructural相似性indexssimmse PresentedBy: BishwaSheth StructuralSimilarityIndex GuidedBy: Dr.K.R.Rao TopicstobeCovered WhyImagequalitymeasure WhatisImagequalitymeasure Typesofqualityassessment MSE–Meansquareerror SSIM-Structuralsimilarityinde...