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• W3095814194 endingPage "116064" @default.
• W3095814194 startingPage "116064" @default.
• W3095814194 abstract "No-reference/blind image quality assessment (NR-IQA/BIQA) algorithms play an important role in image evaluation, as they can assess the quality of an image automatically, only using the distorted image whose quality is being assessed. Among the existing NR-IQA/BIQA methods, natural scene statistic (NSS) models which can be expressed in different bandpass domains show good consistency with human subjective judgments of quality. In this paper, we create new ‘quality-aware’ features: the energy differences of the sub-band coefficients across scales via contourlet transform, and propose a new NR-IQA/BIQA model that operates on natural scene statistics in the contourlet domain. Prior to applying the contourlet transform, we apply two preprocessing steps that help to create more information-dense, low-entropy representations. Specifically, we transform the picture into the CIELAB color space and gradient magnitude map. Then, a number of ‘quality-aware’ features are discovered in the contourlet transform domain: the energy of the sub-band coefficients within scales, and the energy differences between scales, as well as measurements of the statistical relationships of pixels across scales. A detailed analysis is conducted to show how different distortions affect the statistical characteristics of these features, and then features are fed to a support vector regression (SVR) model which learns to predict image quality. Experimental results show that the proposed method has high linearity against human subjective perception, and outperforms the state-of-the-art NR-IQA models." @default.
• W3095814194 created "2020-11-09" @default.
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• W3095814194 date "2021-02-01" @default.
• W3095814194 modified "2023-10-03" @default.
• W3095814194 title "Blind image quality assessment in the contourlet domain" @default.
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• W3095814194 doi "https://doi.org/10.1016/j.image.2020.116064" @default.
• W3095814194 hasPublicationYear "2021" @default.
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