Authors:
Skoudarli Abdellah
1
;
Nibouche Mokhtar
2
and
Serir Amina
3
Affiliations:
1
Faculte of Electronics and Informatics USTHB, Algeria
;
2
Frenchay Campus, United Kingdom
;
3
FEI USTHB, Algeria
Keyword(s):
H.264/AVC, Mode Decision, Inter/Intra Prediction, Homogeneity, Stationarity, Complexity Reduction.
Related
Ontology
Subjects/Areas/Topics:
Image and Video Processing, Compression and Segmentation
;
Multimedia
;
Multimedia Signal Processing
;
Telecommunications
Abstract:
The H.264/AVC video coding standard is used in a wide range of applications from video conferencing to high-definition TV. Compared to the previous standard, the H.264/AVC has significantly better performance in terms of PSNR and visual quality at the same bit rate. It uses a complex mode decision technique based on rate-distortion optimization (RDO). Therefore, this technique introduces a high computational complexity. However, the computational complexity is one key challenge for the high efficient compression. In order to reduce the H.264/AVC complexity a new efficient and fast mode decision algorithm, based on the spatial homogeneity and temporal stationary characteristics of the current macroblock, is proposed in this paper. The experimental results show that the proposed algorithm is able to reduce up to 66,90 % of the computational complexity compared to the high complexity algorithm in the JM16.1 reference software with tolerant performance degradation.