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An Objective Quality Assessment Based on Gabor Wavelet  

엄민영 (연세대학교 전기전자공학과)
최윤식 (연세대학교 전기전자공학과)
장석각 (한국철도기술연구원)
조봉관 (한국철도기술연구원)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.41, no.6, 2004 , pp. 81-88 More about this Journal
Abstract
In this paper, we propose a new objective quality assessment method considering the human visual perception characteristics. A subjective quality assessment is obtained by the response of the receptive field in the primary visual cortex and a human's eye can't focus on all of the visual range in a moment. Take advantage of two facts above, we apply Gabor wavelet transform which is well fit the receptive field in the cortex, to divided constant sized subblocks. Then a local distortion of the subblocks and a global distortion for the entire image are calculated in order. The proposed method has been evaluated using video test sequences provided by the Video Quality Experts Group (VQEG). The experimental results show that good correlation with human perception is obtained using the proposed metric, which is what we called GPSNR.
Keywords
Objective quality assessment; PSNR; Gabor wavelet; HVS;
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