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Efficient Data Transfer Method for Image Filtering Implementation on FPGA Using OpenCL

Title
Efficient Data Transfer Method for Image Filtering Implementation on FPGA Using OpenCL
Author
정기석
Keywords
OpenCL; FPGA; Heterogeneous computing; Image filter; Data transfer
Issue Date
2015-07
Publisher
Society of Digital Information and Wireless Communications
Citation
The International Conference on Electronics and Software Science (ICESS2015) , Page. 239-243
Abstract
Heterogeneous platforms which commonly consist of a central processing unit (CPU) and a graphic processing unit (GPU) receive lots of attention to achieve both high performance and low power consumption. Furthermore, modern heterogeneous platforms often employ a field programmable gate array (FPGA) device in addition to a CPU and a GPU. To fully utilize these heterogeneous hardware accelerators, Open Computing Language (OpenCL) has been developed. In this paper, an FPGA implementation of image filtering with effective data transfer using OpenCL is proposed. To utilize the configurable pipelined architecture of the target FPGA, an effective local memory allocation scheme is proposed for a convolution kernel, and a loop-unrolling method is applied to increase the local memory allocation efficiency. By using the proposed method, the average local memory access latency is improved significantly for various memory access patterns. Also, the proposed filtering kernel shows a better performance-per-watt than a functionally equivalent GPU implementation by efficiently utilizing the hardware resources of the target FPGA.
URI
http://sdiwc.net/digital-library/efficient-data-transfer-method-for-image-filtering-implementation-on-fpga-using-opencl.htmlhttp://hdl.handle.net/20.500.11754/26101
ISBN
978-1-941968-17-8
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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