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Random Finite Set Based Bayesian Filtering with OpenCL in a Heterogeneous Platform

Biao Hu, Uzair Sharif, Rajat Koner, Guang Chen, Kai Huang, Feihu Zhang, Walter Stechele, Alois Knoll
Robotics and Embedded Systems, Technische Universitat Munchen, 80333 Munchen, Germany
Sensors, 17(4), 843, 2017

@article{hu2017random,

   title={Random Finite Set Based Bayesian Filtering with OpenCL in a Heterogeneous Platform},

   author={Hu, Biao and Sharif, Uzair and Koner, Rajat and Chen, Guang and Huang, Kai and Zhang, Feihu and Stechele, Walter and Knoll, Alois},

   year={2017}

}

While most filtering approaches based on random finite sets have focused on improving performance, in this paper, we argue that computation times are very important in order to enable real-time applications such as pedestrian detection. Towards this goal, this paper investigates the use of OpenCL to accelerate the computation of random finite set-based Bayesian filtering in a heterogeneous system. In detail, we developed an efficient and fully-functional pedestrian-tracking system implementation, which can run under real-time constraints, meanwhile offering decent tracking accuracy. An extensive evaluation analysis was carried out to ensure the fulfillment of sufficient accuracy requirements. This was followed by extensive profiling analysis to spot the potential bottlenecks in terms of execution performance, which were then targeted to come up with an OpenCL accelerated application. Video-throughput improvements from roughly 15 fps to 100 fps (6x) were observed on average while processing typical MOT benchmark videos. Moreover, the worst-case frame processing yielded an 18x advantage from nearly 2 fps to 36 fps, thereby comfortably meeting the real-time constraints. Our implementation is released as open-source code.
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