分区域收敛的快速码书训练算法

庞朝阳; 孙世新; 潘晔; 龚海莹

分区域收敛的快速码书训练算法

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出版历程
- 收稿日期: 2001-02-11
- 修回日期: 2001-10-10
- 刊出日期: 2002-09-19

A fast codebook training algorithm using local clustering

摘要

摘要: 该文提出分区域收敛的快速码书训练算法LC,它与LBC算法相比,结构简单、速度快,用典型的测试图像Lena和Barbara做实验,表明LC算法峰值信噪比只比LBG算法少2％左右,但运行速度东LBG的4.61-13.6倍。在比特率为0.375 bpp条件下,LC算法与LBG算法的重建图像质量无明显差别。
- 向量量化; LBG算法; LC算法; 峰值信噪比; 算法运行时间
Abstract: A fast codebook training algorithm using local clustering, named the LC algorithm, is presented in this paper. Comparing with the LBG algorithm, it is simple and fast. The experiment using typical test, images Lena and Barbara shows that the algorithm is 14.61 ~ 13.6 times faster than the LBG algorithm, with its PSNR being reduced by 2% approximately from the LBG algorithm only. The reconstructed images between the LC and the LBG algorithms have no obvious differences at the 0.375 bit/pixel condition.

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