A deblocking scheme using DCT domain and space domain filtering

	A deblocking scheme using DCT domain and space domain filtering
	Zhang, Xuequan; Chen, Xiaomin
	2012
会议名称	2nd World Congress on Computer Science and Information Engineering, CSIE 2011
会议日期	June 17, 2011 - June 19, 2011
会议地点	Changchun, China
页码	459-466
通讯作者	Zhang, X. (zhang_x.q@163.com)
中文摘要	Block Discrete Cosine Transform (BDCT) based image compression often introduces quantization noise which exhibits blocking artifacts in the reconstructed images especially when the compression ratio is high. In this paper, we propose a new deblocking scheme for the BDCT compressed images. First, we define shift block and DCT domain bandwidth, and filter the shift blocks of the image according to the bandwidths of neighbor blocks. Then we regularize the DCT domain values using the quantization coefficients table. Finally we construct a space domain adaptive rational filter to smooth the block edges. The experimental results show that the proposed method is effective and robust in both objective and subjective measures across a variety of images and exhibits more satisfactory performance as compared to other declocking techniques. © 2012 Springer-Verlag Berlin Heidelberg.
英文摘要	Block Discrete Cosine Transform (BDCT) based image compression often introduces quantization noise which exhibits blocking artifacts in the reconstructed images especially when the compression ratio is high. In this paper, we propose a new deblocking scheme for the BDCT compressed images. First, we define shift block and DCT domain bandwidth, and filter the shift blocks of the image according to the bandwidths of neighbor blocks. Then we regularize the DCT domain values using the quantization coefficients table. Finally we construct a space domain adaptive rational filter to smooth the block edges. The experimental results show that the proposed method is effective and robust in both objective and subjective measures across a variety of images and exhibits more satisfactory performance as compared to other declocking techniques. © 2012 Springer-Verlag Berlin Heidelberg.
收录类别	EI
会议录	Lecture Notes in Electrical Engineering
会议录出版者	Springer Verlag, Tiergartenstrasse 17, Heidelberg, D-69121, Germany
学科主题	空间技术
语种	英语
ISSN号	1876-1100
ISBN号	9783642257919
内容类型	会议论文
源URL	[http://ir.nssc.ac.cn/handle/122/2968]
专题	国家空间科学中心_空间技术部
推荐引用方式 GB/T 7714	Zhang, Xuequan,Chen, Xiaomin. A deblocking scheme using DCT domain and space domain filtering[C]. 见:2nd World Congress on Computer Science and Information Engineering, CSIE 2011. Changchun, China. June 17, 2011 - June 19, 2011.