| 題名: | JPEG false contour reduction using error diffusion |
| 作者: | Guo, Jing-Ming
Hsia, Chih-Hsien
Chang, Chia-Hao |
| 貢獻者: | Dept Elect Engn |
| 關鍵詞: | Analysis of algorithms
JPEG
Digital halftoning
False contour
Error diffusion |
| 日期: | 2015-03 |
| 上傳時間: | 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 |
| 顯示於類別: | [電機工程系] 期刊論文
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