Video-based analysis of motion skills in simulation-based surgical training
2013
Analysis ofmotionexpertiseisanimportantprobleminmanydomainsincludingsportsandsurgery.Inrecent
years,surgicalsimulationhasemergedattheforefrontofnewtechnologiesforimprovingtheeducationand
training ofsurgicalresidents.Insimulation-basedsurgicaltraining,akeytaskistoratetheperformanceofthe
operators,whichisdonecurrentlybyseniorsurgeons.Thispaperintroducesanovelsolutiontothisproblem
through employingvision-basedtechniques.Wedevelopanautomatic,video-basedapproachtoanalyzingthe
motion skillsofasurgeoninsimulation-basedsurgicaltraining,whereasurgicalactioniscapturedbymultiple
video cameraswithlittleornocalibration,resultinginmultiplevideostreamsofheterogeneousproperties.
Typicalmultiple-viewvisiontechniquesareinadequateforprocessingsuchdata.Weproposeanovelapproach
that employsbothcanonicalcorrelationanalysis(CCA)andthebag-of-wordsmodeltoclassifytheexpertise
levelofthesubjectbasedontheheterogeneousvideostreamscapturingboththemotionofthesubject'shands
and theresultantmotionofthetools.Experimentsweredesignedandperformedtovalidatetheproposed
approachusingrealisticdatacapturedfromresidentsurgeonsinlocalhospitals.Theresultssuggestthatthe
proposedapproachmayprovideapromisingpracticalsolutiontotherealworldproblemevaluatingmotionskills
in simulation-basedsurgicaltraining.
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