Title :
Efficient inter mode decision for H.263 to H.264 video transcoding using support vector machines
Author :
Jing, Xuan ; Siu, Wan-chi ; Chau, Lap-Pui ; Constantinides, A.G.
Author_Institution :
Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ., Hong Kong, China
Abstract :
This paper presents an efficient mode decision algorithm for H.263 to H.264 interframe transcoding. The proposed scheme uses a support vector machines (SVMs) approach to investigate the relationship between data extracted from H.263 decoding stage and the optimal coding mode in H.264 re-encoding process. Based on the SVM classifier, the transcoder only enables a subset of candidate modes for each macroblock in the rate-distortion-optimized mode decision in H.264. The objective is to eliminate unlikely modes in earlier stages in order to achieve computation saving. Simulation results show that the proposed method can reduce the computational complexity of interframe transcoding by up to 77% while maintaining similar rate-distortion performance.
Keywords :
support vector machines; video coding; H.263-H.264 video transcoding; SVM classifier; efficient intermode decision; efficient mode decision algorithm; optimal coding mode; rate-distortion-optimized mode decision; support vector machine; Computational complexity; Costs; Data mining; Decoding; Discrete cosine transforms; Encoding; Rate-distortion; Support vector machine classification; Support vector machines; Transcoding;
Conference_Titel :
Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-3827-3
Electronic_ISBN :
978-1-4244-3828-0
DOI :
10.1109/ISCAS.2009.5118271