基于草图和上下文敏感的拉普拉斯金字塔编码

ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing Pub Date : 1988-04-11 DOI:10.1109/ICASSP.1988.196707

J. Vincent

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引用次数: 0

摘要

通过利用拉普拉斯金字塔内的结构冗余，描述了一种超越一阶统计量的金字塔编码改进。用一种新颖的草图金字塔来描述它们的三维结构，并将其用于一种新的上下文敏感的拉普拉斯金字塔编码方法中。采用高斯函数作为生成核，sinc函数作为展开滤波器，增强了该方法的有效性。根据场景复杂度的不同，金字塔编码得到的压缩比提高了2.5到4倍。给出了实例结果。

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Sketch based and context sensitive coding of Laplacian pyramids

An improvement in pyramidal coding is described which goes beyond first-order statistics by exploiting structural redundancies within Laplacian pyramids. Their three-dimensional structures are described with a novel sketch pyramid, which is used in a new context-sensitive method for coding Laplacian pyramids. This approach is enhanced by using the Gaussian function as the generating kernel, and the sinc function for the expansion filter. The compression ratios obtained from pyramidal coding are improved by a factor ranging from around 2.5 to 4, depending on scene complexity. Example results are given.<>

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ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing

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