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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/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,...
In high efficiency video coding (HEVC), the encoder employs a flexible quad-tree coding structure as well as a large number of prediction modes. For each size of coding unit (CU), transform unit (TU) and each prediction mode, the rate distortion optimization (RDO) is performed to select the best CU, TU and the best prediction mode. Although better coding efficiency is achieved, the computational complexity...
The emerging ultra-HD video content and the latest generation video coding standards such as HEVC and AVS2 involve significant computational complexity increase. Aiming to reduce the complexity of IDCT process, a fast IDCT design for AVS2 is presented in this paper, which bases on skipping the calculations of zero coefficients. After statistical analysis, we design several patterns for transform blocks...
Compared with H.264, the High Efficiency Video Coding standard has higher compression efficiency and better transmission performance, and will be used in wider field. TZ search method is adopted to perform integer pixel search in HEVC. Its performance is very perfect but very time-consuming. In this paper, we use hexagon search method in place of TZ search method to speed up motion estimation process...
MB-level parallelism is widely used in parallel video coding thanks to its merits of low latency, no performance loss and high degree of parallelism. Most of video encoders with MB-level parallelism employ MB Row Scheduling (MRS) scheme. In software video encoder, early terminate algorithms tend to cause significant difference in coding time of different MBs. Consequently, the running speeds of multiple...
A Depth Template based 2D-to-3D Video Conversion and Coding system (DTVCC) is proposed by this paper. In DTVCC, triangle meshes are exploited to describe depth template for scenes in 2D video, an interactive system is designed to generate reliable depth template, depth map can be automatically reconstructed based on the depth template and 2D video frame pixels information, and the generated 3D video...
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