JPEG false contour reduction using error diffusion

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题名:	JPEG false contour reduction using error diffusion
作者:	Guo, Jing-Ming Hsia, Chih-Hsien Chang, Chia-Hao
贡献者:	Dept Elect Engn
关键词:	Analysis of algorithms JPEG Digital halftoning False contour Error diffusion
日期:	2015-03
上传时间:	2015-10-30 14:17:08 (UTC+8)
摘要:	This study presents an approach to effectively suppress the annoying false contour inherently introduced in a JPEG compressed image. The false contour is mainly caused by the discrepancy between the original DCT coefficient prior quantization in the encoder and the inverse quantization coefficient in the decoder. In this study, the error diffusion with the optimized error kernels is involved to compensate the quantization errors to the pixels in the neighboring blocks. As documented in the experimental results, the proposed method has been proven to significantly reduce the false contour in a JPEG image. (C) 2014 Elsevier B.V. All rights reserved.
關聯:	INFORMATION PROCESSING LETTERS 卷: 115 期: 3 頁碼: 403-407
显示于类别:	[電機工程系] 期刊論文

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