DocumentCode :
829763
Title :
A new enhancement method for digital video applications
Author :
Yang, Yibin ; Boroczky, Lilla
Author_Institution :
Philips Res. USA, Briarcliff Manor, NY, USA
Volume :
48
Issue :
3
fYear :
2002
fDate :
8/1/2002 12:00:00 AM
Firstpage :
435
Lastpage :
443
Abstract :
A new approach for digital video enhancement is proposed in order to achieve optimal picture quality for MPEG encoded video. It takes account of the special characteristics of the encoded video by defining a usefulness metric for enhancement (UME). This metric is calculated based on coding information and local spatial features to quantify how much a pixel can be enhanced without boosting coding artifacts. Motion estimation and scene change detection are integrated in the proposed algorithm to improve the temporal consistency. The idea proposed here can be applied to improve the performance of video enhancement algorithms for digital compressed sources. To demonstrate the potential of the new approach, the UME is applied to a spatial-domain sharpness enhancement algorithm. Experimental results show significant improvement with respect to the algorithm without the UME for various video sequences containing coding artifacts. This new approach can be incorporated into future digital video products (e.g. DVD recorders, set-top boxes, digital TVs, etc) in order to achieve superior picture quality for encoded video.
Keywords :
code standards; data compression; image enhancement; image sequences; motion estimation; telecommunication standards; video coding; DVD recorders; MPEG encoded video; UME; coding artifacts; coding information; digital TV; digital compressed sources; digital video applications; digital video enhancement; digital video products; local spatial features; motion estimation; optimal picture quality; pixel; scene change detection; set-top boxes; spatial-domain sharpness enhancement algorithm; temporal consistency; usefulness metric for enhancement; video enhancement algorithms; video sequences; Bit rate; Boosting; Change detection algorithms; DVD; Decoding; Iterative algorithms; Quantization; Transform coding; Video compression; Video sequences;
fLanguage :
English
Journal_Title :
Consumer Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0098-3063
Type :
jour
DOI :
10.1109/TCE.2002.1037025
Filename :
1037025
Link To Document :
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