A Compact 32-Pixel TU-Oriented and SRAM-Free Intra Prediction VLSI Architecture for HEVC Decoder
A Compact 32-Pixel TU-Oriented and SRAM-Free Intra Prediction VLSI Architecture for HEVC Decoder
复制标题
用于 HEVC 解码器的紧凑型 32 像素面向 TU 且无 SRAM 的帧内预测 VLSI 架构
DOI：
10.1109/access.2019.2946907
复制
发表时间：
2019
期刊：
影响因子：
3.9
通讯作者：
Xiaoyang Zeng
中科院分区：
文献类型：
--
作者：
Yibo Fan;Genwei Tang;Xiaoyang Zeng
在高效视频编码(HEVC)中，各种CU大小和帧内预测模式显著提高了编码效率，但也带来了较高的计算复杂度。本文提出了一种新的面向8K视频解码的紧凑型HEVC帧内预测VLSI结构。它支持所有变换单元(TU)大小和35种HEVC帧内预测模式。首先，本文介绍了一种面向TU的帧内预测器，吞吐量为32个像素，可以根据TU的大小重新排列。它可以是32个像素的行、两个16个像素的行、4个8个像素的行或4个4个像素的行。这种面向TU的体系结构允许并行计算帧内预测和离散余弦逆变换(IDCT)，消除了它们之间的内存。此外，还提出了一种用于参考采样的水平和垂直行缓冲器，该缓冲器只需0.8K位，并且采用无SRAM的寄存器堆来实现。最后，为了进一步降低硬件消耗，可以在预测中共享乘法器。实现结果表明，该紧凑型结构支持8K视频应用，在400 MHz下采用TSMC65 nm工艺综合，逻辑门数为66.2K。
In the High Efficiency Video Coding (HEVC), a variety of CU sizes and intra prediction modes significantly improve coding efficiency, but also bring higher computational complexity. This paper proposes a new compact VLSI architecture for HEVC intra prediction, which is geared towards 8K video decoding. It supports all the transform unit (TU) sizes and 35 HEVC intra prediction modes. First, this paper introduces a TU-oriented intra predictor with a throughput of 32 pixels, which can be newly arranged with the TU size. It can be a line of 32 pixels, two lines of 16 pixels, 4 lines of 8 pixels or four lines of four pixels. This TU-oriented architecture allows intra-prediction and inverse discrete cosine transform (IDCT) to be computed in parallel, removing the memory between them. In addition, a horizontal and vertical line buffer for reference sample is proposed, which only cost 0.8K bit and is implemented by register files with SRAM-free. Finally, to further reduce hardware consumption, multipliers can be shared in the prediction. The implementation result shows that the compact architecture supports 8K video application and costs 66.2K logic gates, which is synthesized with the TSMC 65nm process under 400MHz.
DOI：
10.1109/tcsvt.2003.815165
发表时间：
2003-07-01
影响因子：
8.4
作者：
Wiegand, T;Sullivan, GJ;Luthra, A
通讯作者：
Luthra, A
DOI：
10.1109/vcip.2014.7051538
发表时间：
2014-12
期刊：
2014 IEEE Visual Communications and Image Processing Conference
影响因子：
--
作者：
Heming Sun;Dajiang Zhou;Jiayi Zhu;S. Kimura;S. Goto
通讯作者：
Heming Sun;Dajiang Zhou;Jiayi Zhu;S. Kimura;S. Goto