1.2-mW Online Learning Mixed-Mode Intelligent Inference Engine for Low-Power Real-Time Object Recognition Processor

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Object recognition is computationally intensive and it is challenging to meet 30-f/s real-time processing demands under sub-watt low-power constraints of mobile platforms even for heterogeneous many-core architecture. In this paper, an intelligent inference engine (IIE) is proposed as a hardware controller for a many-core processor to satisfy the requirements of low-power real-time object recognition. The IIE exploits learning and inference capabilities of the neurofuzzy system by adopting the versatile adaptive neurofuzzy inference system (VANFIS) with the proposed hardware-oriented learning algorithm. Using the programmable VANFIS, the IIE can configure its hardware topology adaptively for different target classifications. Its architecture contains analog/digital mixed-mode neurofuzzy circuits for updating online parameters to increase attention efficiency of object recognition process. It is implemented in 0.13-mu m CMOS process and achieves 1.2-mW power consumption with 94% average classification accuracy within 1-mu s operation delay. The 0.765-mm(2) IIE achieves 76% attention efficiency and reduces power and processing delay of the 50-mm(2) image processor by up to 37% and 28%, respectively, when 96% recognition accuracy is achieved.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2013-05
Language
English
Article Type
Article
Keywords

NEURAL-NETWORKS; FUZZY; SYSTEM

Citation

IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, v.21, no.5, pp.921 - 933

ISSN
1063-8210
DOI
10.1109/TVLSI.2012.2198249
URI
http://hdl.handle.net/10203/174738
Appears in Collection
EE-Journal Papers(저널논문)
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