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A Two-Step Framework for Constructing Blind Image Quality Indices
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DOI：10.1109/LSP.2010.2043888.png)
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Abstract
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Present day no-reference/no-reference image quality assessment (NR IQA) algorithms usually assume that the distortion affecting the image is known. This is a limiting assumption for practical applications, since in a majority of cases the distortions in the image are unknown. We propose a new two-step framework for no-reference image quality assessment based on natural scene statistics (NSS). Once trained, the framework does not require any knowledge of the distorting process and the framework is modular in that it can be extended to any number of distortions. We describe the framework for blind image quality assessment and a version of this framework-the blind image quality index (BIQI) is evaluated on the LIVE image quality assessment database. A software release of BIQI has been made available online: http://live.ece.utexas.edu/research/quality/BIQI_release.zip.
Keywords:
Transform coding
Image quality
PSNR
Algorithm design and analysis
Indexes
Quality assessment
Support vector machines
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