Deblocking Algorithms with Edge Filters for DCT Compressed Images

被引：0

作者：

Al Kitbi, Nasir ^{[1
]}

Dawood, Ali ^{[1
]}

机构：

[1] Khalifa Univ Sci Technol & Res, Sharjah, U Arab Emirates

来源：

2008 FIRST INTERNATIONAL WORKSHOPS ON IMAGE PROCESSING THEORY, TOOLS AND APPLICATIONS (IPTA) | 2008年

关键词：

Image processing; Image compression; Blockiness; Deblocking;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Blocking artifacts occur in images and video streams that are compressed to low bit rates using block Discrete Cosine Transform (DCT)-based compression standards. It appears as artificial block boundaries between adjacent blocks of the compressed images. In this paper, new methods to reduce blocking effect are proposed. They were tested on different images and different compression ratios (quality factors), and they were evaluated using objective and subjective measures. In general, results of testing were obtained as expected. One technique, namely: The "two sides average+Sobel edge detector" achieved higher values for approximately all tested images in both, objective and subjective quality measures.

引用

页码：461 / 465

页数：5