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arXiv 2402.05974eess.IVcs.CVcs.GRcs.ITmath.IT
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RAGE for the Machine:面向嵌入式应用的低成本随机访问图像压缩

RAGE for the Machine: Image Compression with Low-Cost Random Access for Embedded Applications

Aarhus University(奥胡斯大学)

Christian D. Rask, Daniel E. Lucani

AI总结:

RAGE是一种图像压缩框架,利用广义去重实现无损和有损压缩,支持像素级随机访问,在ARM平台上测试,压缩比与最先进无损压缩器相当,有损变体RAGE-Q在嵌入式图形中优于JPEG。

摘要:

我们提出了RAGE,一个图像压缩框架,它实现了四个通常相互冲突的目标:1)对多种彩色图像具有良好的压缩性能;2)计算高效、解压速度快;3)支持像素级粒度的快速随机访问,无需解压整个图像;4)同时支持无损和有损压缩。为实现这些目标,我们依赖于广义去重(GD)这一最新概念,它已知能在时间序列数据中提供高效的无损(解)压缩和快速随机访问,并提出了适用于图像压缩的关键扩展,包括无损和有损。使用九个不同的数据集,包括图形、标志和自然图像,我们表明RAGE在压缩比上与最先进的无损图像压缩器相当或更好,同时提供像素级随机访问能力。在ARM Cortex-M33平台上的测试显示,寻道时间在9.9至40.6纳秒之间,每像素平均解码时间在274至1226纳秒之间。我们的测量还表明,RAGE的有损变体RAGE-Q在嵌入式图形中的失真方面比JPEG高出数倍,并且在自然图像上具有合理的压缩和失真性能。

英文摘要:

We introduce RAGE, an image compression framework that achieves four generally conflicting objectives: 1) good compression for a wide variety of color images, 2) computationally efficient, fast decompression, 3) fast random access of images with pixel-level granularity without the need to decompress the entire image, 4) support for both lossless and lossy compression. To achieve these, we rely on the recent concept of generalized deduplication (GD), which is known to provide efficient lossless (de)compression and fast random access in time-series data, and deliver key expansions suitable for image compression, both lossless and lossy. Using nine different datasets, incl. graphics, logos, natural images, we show that RAGE has similar or better compression ratios to state-of-the-art lossless image compressors, while delivering pixel-level random access capabilities. Tests in an ARM Cortex-M33 platform show seek times between 9.9 and 40.6~ns and average decoding time per pixel between 274 and 1226~ns. Our measurements also show that RAGE's lossy variant, RAGE-Q, outperforms JPEG by several fold in terms of distortion in embedded graphics and has reasonable compression and distortion for natural images.

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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