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Linearity Improvement of Mosquito Noise Level Estimation from Decoded Picture
Naoya SAGARA Yousuke KASHIMURA Kenji SUGIYAMA
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/02/01
Online ISSN: 1745-1337
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section on Image Media Quality)
DCT coding, block artifact, mosquito noise, non reference estimation,
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DCT encoding of images leads to block artifact and mosquito noise degradations in the decoded pictures. We propose an estimation to determine the mosquito noise block and level; however, this technique lacks sufficient linearity. To improve its performance, we use the sub-divided block for edge effect suppression. The subsequent results are mostly linear with the quantization.