A Hardware-Friendly Bilateral Solver Accelerator for Real-Time Virtual Reality Video
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Date
2017
Journal Title
Journal ISSN
Volume Title
Publisher
ACM
Abstract
Rendering 3D-360° VR video from a camera rig is computationintensive and typically performed o ine. In this paper, we target the most time-consuming step of the VR video creation process, high-quality ow estimation with the bilateral solver.We propose a new algorithm, the hardware-friendly bilateral solver, that enables faster runtimes than existing algorithms of similar quality. Our algorithm is easily parallelized, achieving a 4 speedup on CPU and 32 speedup on GPU over a baseline CPU implementation. We also design an FPGA-based hardware accelerator that utilizes reduced-precision computation and the parallelism inherent in our algorithm to achieve further speedups over our CPU and GPU implementations while consuming an order of magnitude less power. e FPGA design's power e ciency enables practical real-time VR video processing at the camera rig or in the cloud.
Description
@inproceedings{10.1145:3105762.3105772,
booktitle = {Eurographics/ ACM SIGGRAPH Symposium on High Performance Graphics},
editor = {Vlastimil Havran and Karthik Vaiyanathan},
title = {{A Hardware-Friendly Bilateral Solver Accelerator for Real-Time Virtual Reality Video}},
author = {Mazumdar, Amrita and Alaghi, Armin and Barron, Jonathan T. and Gallup, David and Ceze, Luis and Oskin, Mark and Seitz, Steven M.},
year = {2017},
publisher = {ACM},
ISSN = {2079-8679},
ISBN = {978-1-4503-5101-0},
DOI = {10.1145/3105762.3105772}
}