Mr. Wenfei Wan Profile

Wenfei Wan

at XIDIAN University

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Proceedings Article | 5 August 2015 Paper

Visual pattern degradation based image quality assessment

Jinjian Wu, Leida Li, Guangming Shi, Weisi Lin, Wenfei Wan

Proceedings Volume 9622, 96220P (2015) https://doi.org/10.1117/12.2192967

KEYWORDS: Visualization, Image quality, Databases, Quality measurement, Molybdenum, Neurons, Visual cortex, Visual system, Stereolithography, Lithium

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In this paper, we introduce a visual pattern degradation based full-reference (FR) image quality assessment (IQA) method. Researches on visual recognition indicate that the human visual system (HVS) is highly adaptive to extract visual structures for scene understanding. Existing structure degradation based IQA methods mainly take local luminance contrast to represent structure, and measure quality as degradation on luminance contrast. In this paper, we suggest that structure includes not only luminance contrast but also orientation information. Therefore, we analyze the orientation characteristic for structure description. Inspired by the orientation selectivity mechanism in the primary visual cortex, we introduce a novel visual pattern to represent the structure of a local region. Then, the quality is measured as the degradations on both luminance contrast and visual pattern. Experimental results on Five benchmark databases demonstrate that the proposed visual pattern can effectively represent visual structure and the proposed IQA method performs better than the existing IQA metrics.

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