| 支持动态搜索区域的运动估计硬件结构设计与优化 |
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| 引用本文： | 陈运必,郭立,李正东,池凌鸿.支持动态搜索区域的运动估计硬件结构设计与优化[J].中国科学院研究生院学报,2012,29(4):512-517. |
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| 作者姓名： | 陈运必 郭立 李正东 池凌鸿 |
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| 作者单位： | 1. 中国科学技术大学电子科学与技术系,合肥,230027
2. 重庆通信学院电子技术教研室,重庆,400035 |
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| 基金项目： | 国家自然科学基金(61071173)资助 |
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| 摘 要： | 提出一种支持动态搜索区域的可变块大小运动估计硬件结构,弥补固定大小搜索区域的不足,可同时降低外存带宽、计算复杂度和功耗.使用循环分布式存储结构来支持动态搜索区域的数据存取.此外,对耗时的SAD(sum of absolute differences)计算阵列进行均衡的流水线划分和加法逻辑优化.实现结果表明,相比同类设计,该设计以少量的吞吐率损失,换取面积效率和功耗效率的明显提高.
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| 关 键 词： | 运动估计 动态搜索区域 存储带宽 流水线 大规模集成电路 |
Architecture design and optimization for motion estimation with dynamic search range |
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| CHEN Yun-Bi
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GUO Li
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LI Zheng-Dong
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CHI Ling-Hong.Architecture design and optimization for motion estimation with dynamic search range[J].Journal of the Graduate School of the Chinese Academy of Sciences,2012,29(4):512-517. |
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| Authors: | CHEN Yun-Bi GUO Li LI Zheng-Dong CHI Ling-Hong |
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| Institution: | 1(1 Department of Electronic Science and Technology,University of Science and Technology of China,Hefei 230027,China;2 Staff room of Electronic and Technology,Chongqing Communication College,Chongqing 400035,China) |
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| Abstract: | A VBSME with dynamic search range is proposed to overcome the defects of the engine with fixed search range,and it reduces off-chip bandwidth,computational complexity,and power dissipation.A circularly distributed storage structure is adopted to realize the access to the dynamic search area.Besides,the time-consuming SAD computing array is divided into the balanced and adder-optimized pipelines.The implementation results show that,compared to traditional engines,the proposed engine can achieve significant improvements of the hardware and the power efficiency without much loss of throughput. |
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| Keywords: | motion estimation dynamic search range memory bandwidth pipeline VLSI |
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