Title :
Fast quadtree level decision algorithm for H.264/HEVC transcoder
Author :
Diaz-Honrubia, A.J. ; Martinez, J.L. ; Puerta, J.M. ; Gamez, J.A. ; De Cock, J. ; Cuenca, P.
Author_Institution :
Albacete Res. Inst. of Inf., Univ. of Castilla-La Mancha, Albacete, Spain
Abstract :
The High Efficiency Video Coding (HEVC) was developed by the Joint Collaborative Team on Video Coding (JCT-VC) to replace the current H.264/AVC standard which has been widely adopted in the last years. Therefore, there is a lot of legacy content encoded with H.264/AVC and an efficient conversion to HEVC is needed. This paper, presents a Fast Quadtree Level Decision (FQLD) algorithm that greatly reduces the complexity of the transcoding process between H.264/AVC and HEVC. The proposal tries to exploit the information gathered at the H.264/AVC decoder to make decisions on Coding Units (CU) splitting in HEVC using a Naïve-Bayes (NB) probabilistic classifier. Experimental results show that the proposed transcoder can achieve a good tradeoff between coding efficiency and complexity.
Keywords :
Bayes methods; computational complexity; data compression; decision making; image classification; quadtrees; video coding; CU; FQLD algorithm; H.264-HEVC TRANSCODER; JCT-VC; NB probabilistic classifier; Naive-Bayes probabilistic classifier; coding unit; fast quadtree level decision making algorithm; high efficiency video coding; joint collaborative team on video coding; legacy content encoding; transcoding process complexity reduction; Niobium; Prediction algorithms; Standards; Streaming media; Transcoding; Video coding; CTU Splitting; H.264/AVC; HEVC; Transcoding;
Conference_Titel :
Image Processing (ICIP), 2014 IEEE International Conference on
Conference_Location :
Paris
DOI :
10.1109/ICIP.2014.7025505
