A method for removing blocking effects in MPEG-2 video by applying a block classification technique using stream information

Author

Kondo, Satoshi

Author_Institution

Matsushita Electr. Ind. Co. Ltd., Osaka, Japan

Volume

46

Issue

3

fYear

2000

fDate

8/1/2000 12:00:00 AM

Firstpage

872

Lastpage

878

Abstract

This paper proposes a method for removing the blocking effects that become evident when decoding MPEG-2 video data. The method classifies each block and detects blocking effects by using the information obtained from the MPEG-2 video bitstream, including DCT coefficients and motion vectors. Blocking effect removal is achieved by applying a filter to the decoded images in response to the detected result. The effectiveness of the method has been verified by computer simulation. Based on subjective judgment results, the image quality encoded at 3 Mbps by using this method was confirmed to be closely comparable with the quality of images encoded at 4 Mbps. Because this method carries out noise elimination by only using the information obtained from the MPEG-2 video bitstream, it can be applied to any application, including storage, broadcasting, communications, etc

Keywords

decoding; digital filters; discrete cosine transforms; image classification; image enhancement; interference suppression; video signal processing; 3 Mbit/s; 4 Mbit/s; DCT coefficients; MPEG-2 video; block classification technique; blocking effect removal; blocking effects; broadcasting; communications; decoding; image quality; motion vectors; noise elimination; storage; stream information; video bitstream; Computer simulation; Decoding; Discrete cosine transforms; Encoding; Filters; Image quality; Image storage; Motion compensation; Motion detection; Streaming media;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.883465

Filename

883465