DocumentCode :
3297604
Title :
A Two-Piece R-D Model for Hybrid Video Coding and Its Application in Fast Mode Decision
Author :
Aminlou, Alireza ; Fahim-Hashemi, Hana ; Hashemi, Mahmoud Reza ; Gabbouj, Moncef ; Fatemi, Omid
Author_Institution :
Sch. of Electr. & Comput. Eng., Univ. of Tehran, Tehran, Iran
fYear :
2012
fDate :
9-13 July 2012
Firstpage :
1073
Lastpage :
1078
Abstract :
The mode decision process has a significant effect on the quality and complexity of a video encoder. The conventional method that fully codes each macro block for different modes results in the best quality performance, but it suffers from high computational complexity. On the other hand, some other methods ignore the residual part and use the prediction data, or adopt early mode selection approaches in order to reduce the computational cost. These approaches have a negative impact on the coding performance. In this paper, we have used a simple model for the residual coding part and proposed a two-piece R-D model for a macro block. Based on this model, we have introduced a mode decision algorithm that reduces the bit-rate by up to 11.62% at the expense of just 0.5% computational overhead.
Keywords :
computational complexity; video coding; bit-rate reduction; computational complexity; computational cost redcution; early mode selection approach; fast mode decision algorithm; hybrid video coding; macro block; prediction data; residual coding part; two-piece R-D model; video encoder complexity; video encoder quality; Complexity theory; Educational institutions; Encoding; Measurement; Prediction algorithms; Predictive models; Video coding; H.264/AVC; Hybrid video coding; Low complexity; Mode decision; R-D Optimization; R-D model;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Multimedia and Expo (ICME), 2012 IEEE International Conference on
Conference_Location :
Melbourne, VIC
ISSN :
1945-7871
Print_ISBN :
978-1-4673-1659-0
Type :
conf
DOI :
10.1109/ICME.2012.6
Filename :
6298546
Link To Document :
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