DVC decompression with denoising for picture quality improvement

Author

Dhaou, I.B. ; Defée, Lrek

Author_Institution

Signal Process. Lab., Tampere Univ. of Technol., Finland

Volume

43

Issue

3

fYear

1997

fDate

8/1/1997 12:00:00 AM

Firstpage

911

Lastpage

917

Abstract

Digital video cassette (DVC) is a quickly proliferating new standard for real-time digital video recording. DVC is presently used both in consumer and professional applications. In this paper we describe the DVC principles, data organization and video decoding algorithm. Although typically DVC video has very good quality, at low-light levels noise becomes pronounced. We show that noise in the DVC can be reduced by digital postfiltering. For this purpose, a wavelet denoising algorithm is suggested due to its unique properties. Wavelet denoising is described in detail and results of noise reduction are illustrated on examples

Keywords

data compression; decoding; digital communication; digital filters; digital magnetic recording; image enhancement; interference suppression; optical noise; telecommunication standards; video coding; video recording; wavelet transforms; DVC decompression; consumer applications; data organization; digital postfiltering; digital video cassette; low-light levels; noise reduction; professional applications; real-time digital video recording; standard; video decoding algorithm; wavelet denoising algorithm; Decoding; Discrete cosine transforms; Filtering; Image coding; Noise level; Noise reduction; TV; Transform coding; Video compression; Video recording;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.628761

Filename

628761