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IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 13, NO. 4 ...

IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 13, NO. 4, APRIL 20041 IMAGE Quality Assessment: From Error Visibility toStructural SimilarityZhou Wang,Member, IEEE, Alan C. Bovik,Fellow, IEEEH amid R. Sheikh,Student Member, IEEE, and Eero P. Simoncelli,Senior Member, IEEEA bstract Objective methods for assessing perceptual im-age quality have traditionally attempted to quantify the vis-ibility of errors between a distorted IMAGE and a referenceimage using a variety of known properties of the humanvisual system. Under the assumption that human visualperception is highly adapted for extracting structural infor-mation from a scene, we introduce an alternative frameworkfor quality assessment based on the degradation of struc-tural information.

2 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 13, NO. 4, APRIL 2004 Reference signal Distorted signal Quality/ Distortion Measure Channel Decomposition

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