Image Restoration of JPEG Encoded Images via Block Matching and Wiener Filtering

被引：3

作者：

Takagi, Yutaka ^{[1
]}

Fujisawa, Takanori ^{[1
]}

Ikehara, Masaaki ^{[1
]}

机构：

[1] Keio Univ, Dept Elect & Elect Engn, Yokohama, Kanagawa 2238522, Japan

来源：

IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES | 2017年 / E100A卷 / 09期

关键词：

JPEG; signification; block noise; wiener filter; block matching; discrete cosine transform; RGB color space; YCbCR color space; minimization problem; DECOMPRESSION; DEBLOCKING;

D O I：

10.1587/transfun.E100.A.1993

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, we propose a method for removing block noise which appears in JPEG (Joint Photographic Experts Group) encoded images. We iteratively perform the 3D wiener filtering and correction of the coefficients. In the wiener filtering, we perform the block matching for each patch in order to get the patches which have high similarities to the reference patch. After wiener filtering, the collected patches are returned to the places where they were and aggregated. We compare the performance of the proposed method to some conventional methods, and show that the proposed method has an excellent performance.

引用

页码：1993 / 2000

页数：8

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