Low-power ultra-small edge AI accelerators for image recognition with convolution neural networks: Analysis and future directions

W Lin, A Adetomi, T Arslan - Electronics, 2021 - mdpi.com
Electronics, 2021mdpi.com
Edge AI accelerators have been emerging as a solution for near customers' applications in
areas such as unmanned aerial vehicles (UAVs), image recognition sensors, wearable
devices, robotics, and remote sensing satellites. These applications require meeting
performance targets and resilience constraints due to the limited device area and hostile
environments for operation. Numerous research articles have proposed the edge AI
accelerator for satisfying the applications, but not all include full specifications. Most of them …
Edge AI accelerators have been emerging as a solution for near customers’ applications in areas such as unmanned aerial vehicles (UAVs), image recognition sensors, wearable devices, robotics, and remote sensing satellites. These applications require meeting performance targets and resilience constraints due to the limited device area and hostile environments for operation. Numerous research articles have proposed the edge AI accelerator for satisfying the applications, but not all include full specifications. Most of them tend to compare the architecture with other existing CPUs, GPUs, or other reference research, which implies that the performance exposé of the articles are not comprehensive. Thus, this work lists the essential specifications of prior art edge AI accelerators and the CGRA accelerators during the past few years to define and evaluate the low power ultra-small edge AI accelerators. The actual performance, implementation, and productized examples of edge AI accelerators are released in this paper. We introduce the evaluation results showing the edge AI accelerator design trend about key performance metrics to guide designers. Last but not least, we give out the prospect of developing edge AI’s existing and future directions and trends, which will involve other technologies for future challenging constraints.
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