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Multiview Coding Mode Decision With Hybrid Optimal Stopping Model

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6 Author(s)
Tiesong Zhao ; Dept. of Comput. Sci., City Univ. of Hong Kong, Kowloon, China ; Kwong, S. ; Hanli Wang ; Zhou Wang
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In a generic decision process, optimal stopping theory aims to achieve a good tradeoff between decision performance and time consumed, with the advantages of theoretical decision-making and predictable decision performance. In this paper, optimal stopping theory is employed to develop an effective hybrid model for the mode decision problem, which aims to theoretically achieve a good tradeoff between the two interrelated measurements in mode decision, as computational complexity reduction and rate-distortion degradation. The proposed hybrid model is implemented and examined with a multiview encoder. To support the model and further promote coding performance, the multiview coding mode characteristics, including predicted mode probability and estimated coding time, are jointly investigated with inter-view correlations. Exhaustive experimental results with a wide range of video resolutions reveal the efficiency and robustness of our method, with high decision accuracy, negligible computational overhead, and almost intact rate-distortion performance compared to the original encoder.

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Image Processing, IEEE Transactions on  (Volume:22 ,  Issue: 4 )