cvpr2013-Modeling Mutual Visibility Relationship in Pedestri

发表在CVPR13上的行人检测方法

ModelingMutualVisibilityRelationshipinPedestrianDetection

WanliOuyang1,2XingyuZeng2XiaogangWang1,2

1

ShenzhenkeylabofComp.Vis.&Pat.Rec.,

ShenzhenInstitutesofAdvancedTechnology,CAS,China

2

DepartmentofElectronicEngineering,TheChineseUniversityofHongKong

wlouyang@ee.cuhk.edu.hk,xgwang@ee.cuhk.edu.hk

Abstract

Detectingpedestriansinclutteredscenesisachal-lengingproblemincomputervision.Thedif cultyisaddedwhenseveralpedestriansoverlapinimagesandoc-cludeeachother.Weobserve,however,thattheocclu-sion/visibilitystatusesofoverlappingpedestriansprovideusefulmutualrelationshipforvisibilityestimation-thevis-ibilityestimationofonepedestrianfacilitatesthevisibil-ityestimationofanother.Inthispaper,http://www.77cn.com.cnparedwithexistingimage-basedpedestriandetectionapproaches,ourapproachhasthelowestaveragemissrateontheCaltech-Traindataset,theCaltech-TestdatasetandtheETHdataset.Includingmutualvisibilityleadsto4% 8%improvementsonmultiplebenchmarkdatasets.

Without mutual

visibility

Compatible

(a)

(b)

1.Introduction

Pedestriandetectionisachallengingtaskduetotheintra-classvariationofpedestriansinclothingandarticula-tion.Whenseveralpedestriansoverlapintheimageregion,somewillbeoccludedbyothersandtheexpectedvisualcuesoftheoccludedpartsarecorrupted,resultingintheaddeddif cultyindetection.TheexamplesofoverlappingpedestriansinFig.1(a)oftenappearinrealworldapplica-tions.

Pedestrianswithoverlapsaredif culttodetect,however,weobservethatthesepedestrianshaveusefulmutualvisi-bilityrelationshipinformation.Whenpedestriansarefoundtooverlapintheimageregion,therearetwotypesofmutualvisibilityrelationshipsamongtheirparts:

http://www.77cn.com.cnpatiblerelationship.Itmeansthattheobservationofonepartisapositiveindicationoftheotherpart.

There

1

Figure1.(a)Mutualvisibilityrelationshipofpartsamongpedes-triansand(b)detectionresultscomparisonoftheapproachwith-outmodelingmutualvisibilityin[25]andourapproachmodelingmutualvisibility.Withmutualvisibilitymodeledinourapproach,thefalsepositivewindowontheleftlegissuppressedandmissedpedestrianontheleftisfoundbymodelingthevisibilityrelation-shipamongparts.

aretwoparts,i.e.left-halfpartandright-halfpart,foreachpedestrianinFig.1(a).InFig.1(a),giventhepriorknowl-edgethattherearetwopedestrianco-existingsidebyside,theright-halfpartoftheleftpedestrianiscompatiblewiththeright-halfpartoftherightpedestrianbecausethesetwopartsoftenco-existinpositivetrainingexamples.Thecom-patiblerelationshipcanbeusedforincreasingthevisibilitycon denceofmutuallycompatiblepedestrianparts.TakeFig.1(b)asanexample,ifapedestriandetectordetectsbothAlice1ontheleftandBobontherightwithhighfalsepositiverate,thenthevisibilitycon denceofAlice’sright-1’Alice’

and’Bob’areusedasplaceholdernamesinthispaper.

百度搜索“77cn”或“免费范文网”即可找到本站免费阅读全部范文。收藏本站方便下次阅读，免费范文网，提供经典小说教育文库cvpr2013-Modeling Mutual Visibility Relationship in Pedestri在线全文阅读。