DocumentCode :
1772858
Title :
FPGA design of the computation unit for the semi-global stereo matching algorithm
Author :
Roszkowski, Mikolaj ; Pastuszak, Grzegorz
Author_Institution :
Inst. of Radioelectron., Warsaw Univ. of Technol., Warsaw, Poland
fYear :
2014
fDate :
23-25 April 2014
Firstpage :
230
Lastpage :
233
Abstract :
In recent years, it is possible to observe an increased interest in methods of stereo-vision as they allow simple 3D representations of the scene acquired with two optical cameras. However, not all methods described in literature are suitable for a real-time implementation in hardware. One method generally considered to produce good results and viable for such an implementation is semi-global stereo matching. Nevertheless, there are not many in-depth descriptions of hardware architectures of modules implementing this method in the literature. In this article we try to fill in this gap by presenting a detailed FPGA-oriented architecture of the basic computation unit supporting the semi-global matching algorithm. The unit is responsible for carrying out all calculation necessary to select the best disparity for each pixel. We also present a novel solution to the problem of storing paths´ costs for each pixel and discuss the trade-offs between the size of the unit in an FPGA chip and precision of the computed disparity map.
Keywords :
field programmable gate arrays; image matching; logic design; stereo image processing; 3D representations; FPGA chip; FPGA design; FPGA-oriented architecture; computation unit; computed disparity map; module hardware architecture; optical camera; semiglobal stereo matching algorithm; stereo-vision; Clocks; Computer architecture; Field programmable gate arrays; Hardware; Heuristic algorithms; Real-time systems; Stereo vision;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Design and Diagnostics of Electronic Circuits & Systems, 17th International Symposium on
Conference_Location :
Warsaw
Print_ISBN :
978-1-4799-4560-3
Type :
conf
DOI :
10.1109/DDECS.2014.6868796
Filename :
6868796
Link To Document :
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