DocumentCode :
1274586
Title :
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
Link To Document :
بازگشت