Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/220053
 Title: iAVS2: A Fast Intra-Encoding Platform for IEEE 1857.4 Authors: Kui Fan;Ronggang Wang;Zhenyu Wang;Ge Li;Wen Gao Year: 2017 Publisher: IEEE Abstract: The second generation of the audio video coding standard (AVS2), which has been issued as IEEE 1857.4, doubles the coding efficiency of AVS1 and H.264&x002F;AVC. However, the advanced techniques in AVS2 also dramatically increase the computational complexity. The research on a commercial encoder for AVS2 is still at an early stage. In this paper, we propose the first fast intra-encoding platform for AVS2, which we term iAVS2. The platform uses numerous speedup methods, including code optimization, single-instruction multiple-data acceleration, and fast algorithms for almost all the time-consuming modules. To meet different application scenarios, five different speed levels are designed in iAVS2 to provide flexible tradeoffs between compression efficiency and encoding speed. The experimental results show that the fastest speed level of iAVS2 can accelerate the AVS2 reference software (RD12.0) by 144\times on average. Compared with the well-known HEVC encoder platform \times 265 , iAVS2 can provide over 10&x0025; bit rate saving at a similar coding speed. For the UHD and 1080 sequences, iAVS2 outperforms \times 265 at all speed levels. URI: http://localhost/handle/Hannan/220053 volume: 27 issue: 12 More Information: 2726,2738 Appears in Collections: 2017

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