| 一种矢量编码器的VLSI结构 |
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| 引用本文： | 周汀,陈旭昀,章倩苓,李蔚. 一种矢量编码器的VLSI结构[J]. 电子学报, 1998, 26(5): 51-55,85 |
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| 作者姓名： | 周汀 陈旭昀 章倩苓 李蔚 |
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| 作者单位： | 复旦大学专用集成电路与系统国家重点实验室,上海,200433 |
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| 摘 要： | 我们提出了一种基于最小绝对值误差测试（ＭＭＡＥ）矢量编码器的ＶＬＳＩ结构，这一结构采用了误差测度的值不等式判据、预排序的码书和最近邻搜索算法，并采用二分搜索方法和特殊的误差测度计算及比较结构，大大降低了系统的实现规模，同时采用并行流水线等设计技术，可以获得每８个时钟周期编码一个矢量的处理速度。整个系统采用硬件描述语言ＶＨＤＬ和Ｓｙｎｏｐｓｙｓ系统中进行了设计验证和综合。
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| 关 键 词： | 图像编码 矢量量化 超大规模集成电路 |
A VLSI Architecture for Vector Quantization |
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| Zhou Ting, Chen Xuyun, Zhang Qianling, Li Wei. A VLSI Architecture for Vector Quantization[J]. Acta Electronica Sinica, 1998, 26(5): 51-55,85 |
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| Authors: | Zhou Ting Chen Xuyun Zhang Qianling Li Wei |
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| Abstract: | A new VLSI architecture for Vector Quantization(VQ) based on Minimum Mean Absolute Error (MMAE) is proposed.By using a criterion based on sum inequality of distortion measure,presorted codebook and nearest search method,a large number of codewords will be rejected before computing MMAE while main taining image quality.Furthermore,a dichotomy search method,an optimized MAE computation and comparasion structure has been been used .All of the above methods result in a considerable reduction in VLSI area. |
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| Keywords: | Image Coding Vector Quantization VLSI |
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