A 320 mW 342 GOPS Real-Time Dynamic Object Recognition Processor for HD 720p Video Streams

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A heterogeneous multi-core processor is proposed to achieve real-time dynamic object recognition on HD 720p video streams. The context-aware visual attention model is proposed to reduce the required computing power for HD object recognition based on enhanced attention accuracy. In order to realize real-time execution of the proposed algorithm, the processor adopts a 5-stage task-level pipeline that maximizes the utilization of its 31 heterogeneous cores, comprising four simultaneous multithreading feature extraction clusters, a cache-based feature matching processor and a machine learning engine. Dynamic resource management is applied to adaptively tune thread allocation and power management during execution based on the detected amount of tasks and hardware utilization to increase energy efficiency. As a result, the 32 mm(2) chip, fabricated in 0.13 mu m CMOS technology, achieves 30 frame/sec with 342 8-bit GOPS peak performance and 320 mW average power dissipation, which are a 2.72 times performance improvement and 2.54 times per-pixel energy reduction compared to the previous state-of-the-art.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2013-01
Language
English
Article Type
Article; Proceedings Paper
Citation

IEEE JOURNAL OF SOLID-STATE CIRCUITS, v.48, no.1, pp.33 - 45

ISSN
0018-9200
DOI
10.1109/JSSC.2012.2220651
URI
http://hdl.handle.net/10203/103110
Appears in Collection
EE-Journal Papers(저널논문)
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