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.

中文翻译：

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并行嵌入式设备上6.3 W无损高光谱图像压缩下的Gbit / s吞吐量

空间数据系统咨询委员会（CCSDS）-123是用于无损压缩多光谱和高光谱图像的标准，并应用于机载功率受限系统（例如卫星和军用无人机）中。这封信通过为嵌入式系统上的CCSDS-123压缩机提出一种并行解决方案，探索了Nvidia Jetson TX2的低功耗异构架构，与专用电路的生产相比，减少了开发工作，同时保持了低能耗。该解决方案使低功耗图形处理单元（GPU）上的预测器并行化，而编码器则同时利用CPU和GPU的异构多个内核。我们报告预测器的速度超过16.6 Gb / s，整个系统的速度超过1.4 Gb / s，所需功率不到6.3 W，效率为245。