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Gbit/s Throughput Under 6.3-W Lossless Hyperspectral Image Compression on Parallel Embedded Devices

机译:Pbit / S下的Pbit / S吞吐量下并行嵌入式设备上的6.3-W无损高光谱图像压缩

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摘要

The consultative committee for space data system (CCSDS)-123 is a standard for lossless compression of multispectral and hyperspectral images with applications in on-board power-constrained systems, such as satellites and military drones. This letter explores the low-power heterogeneous architecture of the Nvidia Jetson TX2 by proposing a parallel solution to the CCSDS-123 compressor on embedded systems, reducing development effort compared with the production of dedicated circuits, while maintaining low energy consumption. This solution parallelizes the predictor on a low-power graphics processing unit (GPU) while the encoders exploit the heterogeneous multiple cores of the CPUs and GPU concurrently. We report more than 16.6 Gb/s for the predictor and 1.4-Gb/s for the whole system, requiring less than 6.3 W and providing an efficiency of 245.6 Mb/s/W.
机译:空间数据系统(CCSDS)-123协商委员会是多光谱和高光谱图像的无损压缩标准,其中包括在板载电压系统中的应用,例如卫星和军事无人机。这封信通过向嵌入式系统上的CCSDS-123压缩机提出并行解决方案来探讨NVIDIA Jetson TX2的低功耗异构架构,与专用电路的生产相比,降低了开发工作,同时保持低能耗。该解决方案并将预测器并行于低功耗图形处理单元(GPU)上的预测器,而编码器同时利用CPU和GPU的异构多个核心。我们报告了超过16.6 GB / s的预测器,整个系统为1.4-GB / s,需要小于6.3 W,并提供245.6 MB / s / w的效率。

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