Motion-compensated techniques for enhancement of low-quality compressed videos

Author

Shao, Ling ; Kirenko, Ihor ; Leitao, Andre ; Mydlowski, Piotr

Author_Institution

Philips Res. Eur., Eindhoven

fYear

2009

fDate

19-24 April 2009

Firstpage

1349

Lastpage

1352

Abstract

Algorithms for enhancement of low quality compressed videos are described and evaluated in this paper. Cascaded and combined spatio-temporal filters using hierarchical motion estimation and occlusion area detection are investigated for removal of severe coding artifacts and temporal flickering. Both objective and subjective evaluations prove that temporal filtering can significantly improve the video quality of low bit rate video sequences. The proposed methods could therefore be a differentiating feature for future IPTV design.

Keywords

data compression; filtering theory; image enhancement; image sequences; motion compensation; video coding; hierarchical motion estimation; low bit rate; low-quality compressed video enhancement; motion-compensated technique; occlusion area detection; spatio-temporal filter; video sequence; Adaptive filters; Bit rate; IIR filters; IPTV; Information filtering; Information filters; Internet; Motion estimation; Spatial resolution; Video sequences; Adaptive filters; compression artifacts removal; motion-compensated filtering;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on

Conference_Location

Taipei

ISSN

1520-6149

Print_ISBN

978-1-4244-2353-8

Electronic_ISBN

1520-6149

Type

conf

DOI

10.1109/ICASSP.2009.4959842

Filename

4959842