Video Key Frame Extraction Based on Spatial-temporal Color Distribution

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1、InternationalConferenceonIntelligentInformationHidingandMultimediaSignalProcessingVideoKeyFrameExtractionBasedonSpatial-temporalColorDistributionZhonghuaSunKebinJiaHexinChenCollegeofElectronicCollegeofElectronicCommunicationEngineeringInformation&ControlInformat

2、ion&ControlCollege,JilinUniversityEngineering,BeijingEngineering,Beijingchx@jlu.edu.cnUniersityofTechnologyUniversityofTechnologysunzh@bjut.edu.cnkebinj@bjut.edu.cnAbstractproposedmotion-basedapproaches,whichcomputemotionactivity-basedimagedifference[3]ortheVide

3、okeyframeextractionisatypeofvideomotionenergydistribution[4][5].abstraction,whichisoneofthekeyproblemsinvideoBecausecolorhistogramisrobusttobackgroundcontentindexingandretrieval.Keyframeextractionnoisesandinvarianttoimageorientations,mostaimsatfindingasmallcolle

4、ctionofsalientimagesresearchersproposedcolor-basedkeyframeextractionextractedfromavideosequenceforvisualcontentmethods[6][7].In[7]FermanandTekalpconstructedsummarization.Inthispaperweproposeavideokeyanalpha-trimmedaveragehistogramdescribingtheframeextractionmeth

5、odbasedonspatial-temporalcolordistributionofashot.Thencomputethedistancecolordistribution.Firstweconstructatemporallybetweenthehistogramofeachframeintheshotandmaximumoccurrenceframewhichconsidersthethealpha-trimmedaveragehistogram.Keyframespatialandtemporaldistr

6、ibutionofthepixelspositionislocatedbasedonthedistributionofthethroughoutthevideoshot.Thenaweighteddistanceisdistancecurve.However,mostofthesecolorcomputedbetweenframesintheshotandthehistogrambasedmethodscannotwellcapturetheconstructedreferenceframe.Keyframesaree

7、xtractedunderlyingdynamicswhenthereislotsofcameraoratthepeaksofthedistancecurveandcanachievehighobjectmotion.compressionratioandhighfidelity.Tosolvetheproblemsmentionedabove,weKeywords:Keyframeextraction,Videosummarization,proposeaspatial-temporalcolordistributi

8、onbasedkeyVideocontentindexingandretrievalframeextractionmethod.Itconsidersthechangeofpixelgraylevelthroughtheimagesequencesofthe1.Introductionshot.Basedonthecolordis