How Microsoft Azure Simplifies Face Recognition? - Zerone ...

Microsoft Azure Face API offers advanced algorithms that detect human faces in digital images. Face API can detect one or more human faces in an image and ... Blog HowMicrosoftAzureSimplifiesFaceRecognition? BookYourFreeStrategySession Facialrecognition(orfacerecognition)systemsarecommonlyusedforsecuritypurposes.Today,thistechniquefindsitsapplicationinabroadrangeofindustriesincludingretail,eventmanagement,hospitals,academies,defensewings,governmentdepartments,commercialestablishments,banks,andfinancialinstitutions.Facerecognitionisabiometricmethodofidentifying(recognizing)anindividualbycomparinglivecaptureordigitalimagedataagainstthestoredrecordforthatperson.Beforewemoveon,letushaveaquickglanceatthetwoterms-facedetectionandfacerecognition. FaceDetectionandRecognition–AnOverview FaceDetectionandFaceRecognitionaretwodistinctconceptsthatdiffercompletelyfromeachother,thoughrecognitionbuildsupondetection.InDetection,thesystemidentifieshumanfacesindigitalimages,irrespectiveofthesourceoftheimage.InRecognition,thesystemrecognizesaknownfaceinadigitalimagewithaknownname.Herealso,sourceisnotamatterofconcern.Sourcecouldbeanyofthese:ascannedphotograph,alivevideostreamoraCCTVfootage. Incorporatingfacedetectionandrecognitiontechnologiesinbusinessesallowsyoutogeneratevastamountsofusefuldata,thatcanbefurtheranalyzedtoderiveadvancedinsightsandbusinessintelligence.Facerecognition-poweredanalyticssolutionplaysasignificantroleinmanyindustries,sinceitreducesthegapbetweenbusinessandcustomer. Currently,numerousopensourcecodesareavailableinthemarketforfacedetectionandrecognition,outofwhich,themostwidelyusedsolutionsareOpenFace,OpenCVusingEMGU.NETWrapper,andMSAzureFaceAPI.Inthispost,wewillhavealookathowMicrosoftAzureFaceAPIhelpsinfacedetectionandrecognition. MicrosoftAzureFaceAPI MicrosoftAzureFaceAPIoffersadvancedalgorithmsthatdetecthumanfacesindigitalimages.FaceAPIcandetectoneormorehumanfacesinanimageanddisplayfacerectanglestohighlightthefacesintheimage.Alongwiththis,FaceAPIalsoshowsattributesthatincludemachine-learningbasedpredictionsoffacialfeatures.Theattributescompriseage,gender,emotion,pose,smileandfacialhair,inadditionto27otherlandmarksforeachfaceidentifiedinthegivenimage.State-of-the-artalgorithmsdetecthumanfacesinimages,openingarangeoffacialcapabilitiestoyourapplications. MicrosoftAzureFaceAPIcan: Detecthumanfacesandsearchforsimilarities Consolidateimagesintogroupsbasedontheirvisualsimilarities Identifyanypreviouslytaggedpeopleinimages OnceFaceAPIidentifiesthefaces,itwillverifytofindoutwhethertwopeopleinanimageorimagesarethesamebyusingaconfidencescore,orcompareitagainstadatabasetofindoutwhetheranidenticalfacealreadyexists.FaceAPIusesthesharedvisualtraitstogroupsimilarlookingfaces. MSAzureEmotionAPI EmotionAPIprovidesyouanincrediblepersonalizedexperiencebyallowingyoutobuildanapplicationthatrecognizesemotionsfromfacialexpressions.Thisisacloud-basedAPIthatdetectsemotionssuchashappiness,sadness,neutrality,contempt,anger,disgust,fear,andsurprise.EmotionAPIanalyzestheseemotionsbasedonuniversalstandardsofcategorizingfacialexpressions.Itfunctionsinacross-culturalmanner.Thatmeans,yourapplicationwillworkacrosstheglobe. SubscriptionandImplementation UserswithaMicrosoftAzuresubscriptioncanimplementFaceAPI,sinceitisapaidservice.YoucancreateyourownFaceAPIserviceusingtheAzureportal.Thishelpsyourapplicationtoperformfacedetectionandrecognition. QuickstepstoimplementMicrosoftAzureFaceAPI ThefollowingexampleisbasedonWindowsOSandsourcecodeispurelyinC#.Toimplementthesesteps,youneedtohaveaMicrosoftAzuresubscription. Step1: CreateFaceAPIserviceinMSAzureasdisplayedbelow: Step2: Goto“AllServices”menu,whereyoucanseeyourserviceslisted.Notethesubscriptionid,endpoint,andaccesskeyswhichweneedlaterinourprogram. Step3: Selecttheappropriatepricetierforcreatingtheservice.Inthisexample,weareusingthe“FreePriceTier”fordemopurpose. Step4: DifferentstagesofFacerecognitionandDetection -AuthorizeAPIcall:WhileusingfaceAPIclientservices,youshouldauthorizeyourselfforavalidsubscriptionkey. privateFaceServiceClient_faceClient=newFaceServiceClient("Yoursubscriptionkey"); -Createpersongroup:Persongroupactsasacontainerofallpersons.Inthefollowingcodesnippet,replacepersonGroupIdwithyourgroupnameasperyourrequirement(example:mygroup,group1). -Addpersontogroup:Hereweareaddingpersonstopreviouslycreatedgroup. //DefinePerson CreatePersonResultfriend1=await_faceClient.CreatePersonAsync(“Givethepreviouslycreatedgroupname”,“Giveuniquepersonname”); -Addperson’sfaces(TakeTrainingimages) -Trainpersongroup:Thepersongroupmustbetrainedpriortoperforminganidentificationusingit.Moreover,ithastobere-trainedafteraddingorremovinganyperson,orifanypersonhastheirregisteredfaceedited. -IdentifyPerson:Thefollowingcodedemonstratestheprocessofidentification. Theresultwillappearasshownbelow: -Capture1:Samegendergroupwithdifferentemotions. -Capture2:Differentgendersandemotions TheMicrosoftAzureCognitiveServiceFaceAPIApplicationhelpsyoutomakeaFaceAPIappin30minutes.AllyouneedisaMicrosoftAzuresubscription.AzureFaceAPIhasanaccuracyof90-95%. close Hello. We’regladyou’rehere. Tellusalittleaboutyourrequirement. FullName* WorkEmail* Phone* CompanyName* Howcanwehelpyou?*