A GPU implementation of tiled belief propagation on Markov random fields
Kotsifakou, Maria
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https://hdl.handle.net/2142/104846
Description
Title
A GPU implementation of tiled belief propagation on Markov random fields
Author(s)
Kotsifakou, Maria
Issue Date
2019-04-17
Director of Research (if dissertation) or Advisor (if thesis)
Adve, Vikram S.
Department of Study
Computer Science
Discipline
Computer Science
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
stereo matching
tiled belief propagation
GPUs
Abstract
In this work, we present a parallelized version of tiled belief propagation for stereo matching. The proposed algorithm is implemented in CUDA to leverage parallel processing capabilities of GPUs. In our solution, the original tiled BP algorithm is combined with a number of optimizations specific to parallel programs in CUDA. For the given test inputs, the proposed solution runs in 7.96 milliseconds on Nvidia Tesla C2050, achieving acceptable accuracy with respect to the reference code.
This work has been published in 2013 Eleventh ACM/IEEE International Conference on Formal Methods and Models for Codesign (MEMOCODE 2013), winning the MEMOCODE Design Contest 2013 in the adjusted cost-accuracy category. To the best of authors knowledge, this represented the first work in optimizing a parallelized version of the tiled BP algorithm.
After presenting our approach, at selecting an appropriate candidate algorithm for parallelization and implementing in on GPU by applying a series of appropriate optimizations, we discuss the current state of the art on stereo matching, that has been presented since publishing this work.
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