Fast encoder decision for dependent texture coding in 3D-AVS
As a 3D extension of the Audio Video coding Standard (AVS), 3D-AVS is used to improve the coding efficiency of multi-view video. However, the improved performance has also resulted in increased coding complexity. Taking into account the real-time request, how to reduce the complexity of the encoder is becoming very critical. In this paper, a fast encoder decision algorithm including two strategies is proposed. The first one is an early skip/direct mode decision algorithm, and the second one is an adaptive CU minimum splitting algorithm. Both of the two algorithms are applied to dependent texture views to reduce unnecessary visits by exploiting inter-view correlations between the dependent view and the base view. Experimental results show that the proposed algorithm can save 34.2% encoding time with 0.07% BD-rate loss on the overall texture views compared to RFD-4.0 (3D-AVS test model) under the common test condition (CTC). Both of the two strategies have been adopted into the 3D-AVS reference software and disabled in the configuration file under CTC.