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基于软硬件协同设计的车道线实时识别方法.pdf
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1 1 1 2
1 .,,410082
2 .,,201620
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:U461 DOI:10 .3969/ .issn.1004 132X.2015 .10 .011
j
Real-time Lane Recognition Method Based on Hardware-software Co-design
1 1 1 2
Zhang Weiwei Song Xiaolin Zhang Sanlin WuXuncheng
1 .State Key Laboratory of AdvancedDesign and Manufacturing for Vehicle Body,
Hunan University,Changsha,410082
2 .Shanghai University of Engineering Science,Shanghai,201620
Abstract :In order to obtain robustness and real timing for lane recognition, a lane recognition
scheme was designed based on embedded system taking the effective allocation of hardware resource
and softwarefunction into account. From the erspective of roducer/consumer model of the wholep p
system,the necessity of matched enhancement was ut forward, and multi-scale matched filtering
p
method was roposed according to the different width characteristicsof lane markings,then an adapp -
tive dynamic threshold was set based on local noiseestimationfrom theimproved mathematics model
of CFAF.The road images of high frame rate and wide dynamic range were captured through field
programmable ate array(FPGA) and then the matched filtering was speeded up through the coeffig -
cient decomposition technology in the hardware optimization design. Experiments and evaluation
prove the roposedsystem can robustly detect lane markingsunder different traffic scenarioswith thep
processing frame rate of 60fps.
Key words :multi-scalematchedfilter;constantfalsealarm rate(CFAR);embeddedsystem;lane
recognition
0 ,
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