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arXiv 1306.1373cs.DCcs.MM
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基于CUDA的DCT图像压缩技术在CPU和GPU上的计算效率的性能评估

CUDA Based Performance Evaluation of the Computational Efficiency of the DCT Image Compression Technique on Both the CPU and GPU

Kgotlaetsile Mathews Modieginyane, Zenzo Polite Ncube, Naison Gasela

摘要:

计算领域的最新进展,如大规模并行GPU(图形处理单元),以及存储和传输大量数字数据(尤其是图像)的需求,给计算机科学家、研究界和其他利益相关者带来了许多挑战。这些挑战,例如操纵数字数据的巨大成本等,近年来一直是研究界的焦点,并导致了对可以实现优异结果的图像压缩技术的研究。其中一种技术是离散余弦变换,它有助于将图像分成不同频率的部分,并具有出色的能量压缩优势。本文研究了使用计算统一设备架构(CUDA)编程模型来实现基于DCT的Cordic的Loeffler算法,以实现高效的图像压缩。对CPU和GPU下的计算效率进行了分析和评价。本文采用峰值信噪比(PSNR)来评价图像重建质量。结果进行了介绍和讨论。

英文摘要:

Recent advances in computing such as the massively parallel GPUs (Graphical Processing Units),coupled with the need to store and deliver large quantities of digital data especially images, has brought a number of challenges for Computer Scientists, the research community and other stakeholders. These challenges, such as prohibitively large costs to manipulate the digital data amongst others, have been the focus of the research community in recent years and has led to the investigation of image compression techniques that can achieve excellent results. One such technique is the Discrete Cosine Transform, which helps separate an image into parts of differing frequencies and has the advantage of excellent energy-compaction. This paper investigates the use of the Compute Unified Device Architecture (CUDA) programming model to implement the DCT based Cordic based Loeffler algorithm for efficient image compression. The computational efficiency is analyzed and evaluated under both the CPU and GPU. The PSNR (Peak Signal to Noise Ratio) is used to evaluate image reconstruction quality in this paper. The results are presented and discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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