分形图像压缩的并行实现

Proceedings of the 1998 South African Symposium on Communications and Signal Processing-COMSIG '98 (Cat. No. 98EX214) Pub Date : 1998-09-07 DOI:10.1109/COMSIG.1998.736938

R.F. Uys

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引用次数: 1

摘要

本文介绍了一种在德州仪器TMS320C80并行处理器芯片上实现分形图像压缩的方法。这项工作的重点是提高编码速度。速度增益与所使用的处理器数量几乎呈线性关系。提出了一种基于图像子块上像素值的方差来减少计算次数的方法。所采用的各种技术允许在20秒内压缩512/spl倍/512像素256灰度级图像，同时保持峰值信噪比接近30 dB。本文还描述了这项工作的扩展，以允许彩色图像被压缩。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Parallel implementation of fractal image compression

This paper presents an implementation of fractal image compression on a Texas Instruments TMS320C80 parallel processor chip. The work focuses on improving encoding speed. Speed gains are nearly linearly related to the number of processors used. An approach for reducing the number of calculations made, based on the variance of pixel values over sub-blocks of the image is presented. The various techniques employed allow a 512/spl times/512 pixel 256 grey-level image to be compressed in under 20 seconds, while maintaining peak signal to noise ratios of close to 30 dB. This paper also describes an extension of this work to allow colour images to be compressed.

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Proceedings of the 1998 South African Symposium on Communications and Signal Processing-COMSIG '98 (Cat. No. 98EX214)

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