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Vision Framework 入門
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Motoki Narita
August 09, 2017
Technology
2
1.8k
Vision Framework 入門
potatotips #42
https://potatotips.connpass.com/event/60015/
※公開されている情報を元に構成されています
Motoki Narita
August 09, 2017
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Transcript
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ΞϓϦέʔγϣϯ 7JTJPO /-1 /BUVSBM-BOHVBHF1SPDFTTJOH $PSF.- "DDFMFSBUF .14 %PNBJO4QFDJpD ಛఆͷλεΫʹಛԽͨ͠ը૾ղੳͷͨΊͷϑϨʔϜϫʔΫ
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ࠓճΓ͔ͨͬͨͷɺ 7JTJPOͰόʔίʔυΛݕग़͢Δ͜ͱ
Barcode Detection IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXEDΑΓ
w 7JTJPOΛͬͯόʔίʔυͷݕग़Λ͍ͨ͠ w ͔݁Βݴ͏ͱ7JTJPO .-&YBNQMFͱ͍͏88%$ ͷηογϣϯͰΘΕ͍ͯͨαϯϓϧΛݩʹػց ֶशͷ͕ࣝͳͯ͘͢ΜͳΓ7JTJPOಈ͔͢͜ͱ ͕Ͱ͖ͨ w ͨͩ͠ͱ͍͏Λ͢Δ
࣮ํ๏
IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXEDΑΓ Analyzing an Image The Machinery The Results The Asks
IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXEDΑΓ Analyzing an Image The Machinery The Results The Asks
Requests VNDetectBarcodesRequest VNDetectFaceLandmarksRequest VNDetectFaceRectanglesRequest … Observations VNClassificationObservation VNDetectedObjectObservation VNFaceObservation … RequestHandler VNImageRequestHandler
w ը૾͔ΒόʔίʔυΛݕग़ w 7/%FUFDU#BSDPEFT3FRVFTUΛͬͯɺը૾͔Β όʔίʔυΛಡΈऔΔ
Analyzing an Image The Machinery The Results The Asks Requests
VNDetectBarcodesRequest VNDetectFaceLandmarksRequest VNDetectFaceRectanglesRequest … Observations VNClassificationObservation VNDetectedObjectObservation VNFaceObservation … RequestHandler VNImageRequestHandler IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXEDΑΓ
let handler = VNImageRequestHandler(ciImage: ciImage, orientation: orientation) try! handler.perform([barcodeClassificationRequest])
w ը૾͔Βόʔίʔυͷ*4#/ίʔυΛऔΓग़͢
Analyzing an Image The Machinery The Results The Asks Requests
VNDetectBarcodesRequest VNDetectFaceLandmarksRequest VNDetectFaceRectanglesRequest … Observations VNClassificationObservation VNDetectedObjectObservation VNFaceObservation … RequestHandler VNImageRequestHandler IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXEDΑΓ
lazy var barcodeClassificationRequest: VNDetectBarcodesRequest = { return VNDetectBarcodesRequest(completionHandler: { request,
error in guard let observations = request.results as? [VNBarcodeObservation] else { return } let rects = observations.map { $0.boundingBox } DispatchQueue.main.async { [weak self] in for rect in rects { let view = UIView(frame: convertedRect(rect: rect, to: self!.imageView.frame.size)) view.backgroundColor = .green self?.imageView.addSubview(view) } } let _ = observations.flatMap { observation -> CIBarcodeDescriptor? in if let desc = observation.barcodeDescriptor as? CIBarcodeDescriptor { return desc } else { return nil } } }) }()
lazy var barcodeClassificationRequest: VNDetectBarcodesRequest = { return VNDetectBarcodesRequest(completionHandler: { request,
error in guard let observations = request.results as? [VNBarcodeObservation] else { return } let rects = observations.map { $0.boundingBox } DispatchQueue.main.async { [weak self] in for rect in rects { let view = UIView(frame: convertedRect(rect: rect, to: self!.imageView.frame.size)) view.backgroundColor = .green self?.imageView.addSubview(view) } } let _ = observations.flatMap { observation -> CIBarcodeDescriptor? in if let desc = observation.barcodeDescriptor as? CIBarcodeDescriptor { return desc } else { return nil } } }) }()
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lazy var barcodeClassificationRequest: VNDetectBarcodesRequest = { return VNDetectBarcodesRequest(completionHandler: { request,
error in guard let observations = request.results as? [VNBarcodeObservation] else { return } let rects = observations.map { $0.boundingBox } DispatchQueue.main.async { [weak self] in for rect in rects { let view = UIView(frame: convertedRect(rect: rect, to: self!.imageView.frame.size)) view.backgroundColor = .green self?.imageView.addSubview(view) } } let _ = observations.flatMap { observation -> CIBarcodeDescriptor? in if let desc = observation.barcodeDescriptor as? CIBarcodeDescriptor { return desc } else { return nil } } }) }()
w $*#BS$PEF%FTDSJQUPSͰ&"/ίʔυ͕औಘͰ͖Δ ͣɺͱࢥ͍͕ͬͯͨɺͦΜͳͷͳ͔ͬͨ w $*#BS$PEF%FTDSJQUPS/40CKFDUͷαϒΫϥεͰ ಛʹԿ࣮͞Ε͍ͯͳ͍
IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXEDΑΓ Framework Barcode Support Several frameworks support various barcodes types
AVFoundation.framework Vision.framework CoreImage.framework Detection of barcodes during capture Detection of barcodes after capture Rendering barcodes CIBarcodeDescriptor
IUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPODPSFJNBHFDJCBSDPEFEFTDSJQUPS
w ࣮$*#BS$PEF%FTDSJQUPSͷαϒΫϥεʹҕͶΒ Ε͍ͯͯɺ͍·ཉ͍͠ͷ&"/ίʔυʹରԠͨ͠ ͷͳ͔ͬͨ IUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPODPSFJNBHFDJCBSDPEFEFTDSJQUPS
w $*23$PEF%FTDSJQUPS w $*"[UFD$PEF%FTDSJQUPS w $*1%'$PEF%FTDSJQUPS w $*%BUB.BUSJY$PEF%FTDSJQUPS ରԠ͍ͯ͠Δ̎࣍ݩίʔυ
Framework Barcode Support Several frameworks support various barcodes types AVFoundation.framework
Vision.framework CoreImage.framework Detection of barcodes during capture Detection of barcodes after capture Rendering barcodes CIBarcodeDescriptor
·ͱΊ w 7JTJPOΛ͏ͱόʔίʔυ͕ը૾ͷதʹ͋Δͱ͍͏ ͜ͱ͔Δ w ը໘্ͷͲ͜ʹ͋Δ͔ͷ࠲ඪऔΕΔͷͰɺؤுͬ ͯ&"/ίʔυม·ͰͰ͖Δͣ w IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZ XXED
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