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首页> 外文期刊>Journal of electronic imaging >Memory-efficient table look-up optimized algorithm for context-based adaptive variable length decoding in H.264/advanced video coding
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Memory-efficient table look-up optimized algorithm for context-based adaptive variable length decoding in H.264/advanced video coding

机译：H.264 /高级视频编码中基于上下文的自适应可变长度解码的内存有效表查找优化算法

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摘要

Table look-up operation plays a very important role during the decoding processing of context-based adaptive variable length decoding (CAVLD) in H.264/advanced video coding (AVC). However, frequent table look-up operation can result in big table memory access, and then lead to high table power consumption. Aiming to solve the problem of big table memory access of current methods, and then reduce high power consumption, a memory-efficient table look-up optimized algorithm is presented for CAVLD. The contribution of this paper lies that index search technology is introduced to reduce big memory access for table look-up, and then reduce high table power consumption. Specifically, in our schemes, we use index search technology to reduce memory access by reducing the searching and matching operations for code_word on the basis of taking advantage of the internal relationship among length of zero in code_prefix, value of code_suffix and code_lengh, thus saving the power consumption of table look-up. The experimental results show that our proposed table look-up algorithm based on index search can lower about 60% memory access consumption compared with table look-up by sequential search scheme, and then save much power consumption for CAVLD in H.264/AVC. (C) 2016 SPIE and IS&T
机译：在H.264 /高级视频编码（AVC）中基于上下文的自适应可变长度解码（CAVLD）的解码处理中，表查找操作起着非常重要的作用。但是，频繁的表查找操作可能会导致较大的表内存访问，从而导致较高的表功耗。为了解决当前方法中大表访问内存的问题，进而降低高功耗，提出了一种针对CAVLD的高效存储查询表优化算法。本文的贡献在于，引入了索引搜索技术以减少用于表查找的大内存访问，然后减少高表功耗。具体来说，在我们的方案中，我们利用索引搜索技术通过利用code_prefix中的零长度，code_suffix的值和code_lengh的内部关系来减少对code_word的搜索和匹配操作来减少内存访问，从而节省了查表的功耗。实验结果表明，与基于顺序搜索的表查询相比，本文提出的基于索引搜索的表查询算法可以将内存访问消耗降低约60％，从而为H.264 / AVC中的CAVLD节省大量功耗。 （C）2016 SPIE和IS＆T

著录项

  • 来源
    《Journal of electronic imaging》 |2016年第2期|023028.1-023028.10|共10页
  • 作者

    Wang Jianhua; Cheng Lianglun; Wang Tao; Peng Xiaodong;

  • 作者单位

    South China Agr Univ, Coll Elect Engn, Wushan Rd, Guangzhou 510642, Guangdong, Peoples R China;

    Guangdong Univ Technol, Fac Automat, Guangzhou High Educ Mega Ctr, Guangzhou 510006, Guangdong, Peoples R China;

    Guangdong Univ Technol, Fac Automat, Guangzhou High Educ Mega Ctr, Guangzhou 510006, Guangdong, Peoples R China;

    South China Agr Univ, Coll Elect Engn, Wushan Rd, Guangzhou 510642, Guangdong, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    context-based adaptive variable length decoding; memory efficient; look-up table; index search;

    机译：基于上下文的自适应变长解码;高效内存;查找表;索引搜索;

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