Area-energy aware dataflow optimisation of visual tracking systems

GARCIA, Paulo, BHOWMIK, Deepayan, WALLACE, Andrew, STEWART, Robert and MICHAELSON, Greg (2018). Area-energy aware dataflow optimisation of visual tracking systems. In: 14th International Symposium on Applied Reconfigurable Computing (ARC), Santorini, Greece, 2-4 May, 2018.

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Abstract

This paper presents an orderly dataflow-optimisation approach suitable for area-energy aware computer vision applications on FPGAs. Vision systems are increasingly being deployed in power constrained scenarios, where the dataflow model of computation has become popular for describing complex algorithms. Dataflow model allows processing datapaths comprised of several independent and well defined computations. However, compilers are often unsuccessful in identifying domain-specific optimisation opportunities resulting in wasted resources and power consumption. We present a methodology for the optimisation of dataflow networks, according to patterns often found in computer vision systems, focusing on identifying optimisations which are not discovered automatically by an optimising compiler. Code transformation using profiling and refactoring provides opportunities to optimise the design, targeting FPGA implementations and focusing on area and power abatement. Our refactoring methodology, applying transformations to a complex algorithm for visual tracking resulted in significant reduction in power consumption and resource usage.

Item Type: Conference or Workshop Item (Paper)
Research Institute, Centre or Group: Cultural Communication and Computing Research Institute > Communication and Computing Research Centre
Departments: Faculty of Science, Technology and Arts > Computing
Depositing User: Deepayan Bhowmik
Date Deposited: 23 Mar 2018 11:10
Last Modified: 15 May 2018 18:27
URI: http://shura.shu.ac.uk/id/eprint/18575

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