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Journal of Information Science and Engineering, Vol. 32 No. 4, pp. 931-945 (July 2016)

Fast Mode Decision Algorithm for Scalable Video Coding Based on Probabilistic Models

1Department of Electrical Engineering
National Dong Hwa University
Hualien, 974 Taiwan
2Department of Electrical Engineering
National Sun Yat-sen University
Kaohsiung, 804 Taiwan
3,*Department of Computer Science and Information Engineering
National University of Kaohsiung
Kaohsiung, 811 Taiwan

To reduce the computational complexity of the encoding process in Scalable Video Coding, we utilize the information of motion vector predictor (MVP) and the number of non-zero coefficients (NZC) to propose a fast mode decision algorithm. The probability models of MVP and the number of NZC are built to predict the partition mode in the enhancement layer. In addition, the search range of motion estimation is adaptively adjusted to further reduce computational complexity. Experiment results show that the proposed algorithm can reduce coding time by up to 76% in average and provide higher time saving and better performance than previous work.

Keywords: scalable video coding, mode decision, motion estimation, motion vector predictor, enhancement layer, base layer

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Received March 18, 2015; revised May 27, 2015; accepted August 18, 2015.
Communicated by Jen-Tzung Chien.