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7JTJPO'SBNFXPSLͱ
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$PSF.-ͱ7JTJPOͷҧ͍ʁ
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ΞϓϦέʔγϣϯ
7JTJPO /-1
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ΞϓϦέʔγϣϯ
7JTJPO /-1
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ΞϓϦέʔγϣϯ
7JTJPO /-1
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ΞϓϦέʔγϣϯ
7JTJPO /-1
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ࠓճΓ͔ͨͬͨͷɺ
7JTJPOͰόʔίʔυΛݕग़͢Δ͜ͱ
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Barcode Detection
IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXEDΑΓ
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w 7JTJPOΛͬͯόʔίʔυͷݕग़Λ͍ͨ͠
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࣮ํ๏
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IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXEDΑΓ
Analyzing an Image
The
Machinery
The Results
The Asks
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IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXEDΑΓ
Analyzing an Image
The
Machinery
The Results
The Asks
Requests
VNDetectBarcodesRequest
VNDetectFaceLandmarksRequest
VNDetectFaceRectanglesRequest
…
Observations
VNClassificationObservation
VNDetectedObjectObservation
VNFaceObservation
…
RequestHandler
VNImageRequestHandler
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w 7/%FUFDU#BSDPEFT3FRVFTUΛͬͯɺը૾͔Β
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Analyzing an Image
The
Machinery
The Results
The Asks
Requests
VNDetectBarcodesRequest
VNDetectFaceLandmarksRequest
VNDetectFaceRectanglesRequest
…
Observations
VNClassificationObservation
VNDetectedObjectObservation
VNFaceObservation
…
RequestHandler
VNImageRequestHandler
IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXEDΑΓ
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let handler = VNImageRequestHandler(ciImage: ciImage, orientation: orientation)
try! handler.perform([barcodeClassificationRequest])
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w ը૾͔Βόʔίʔυͷ*4#/ίʔυΛऔΓग़͢
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Analyzing an Image
The
Machinery
The Results
The Asks
Requests
VNDetectBarcodesRequest
VNDetectFaceLandmarksRequest
VNDetectFaceRectanglesRequest
…
Observations
VNClassificationObservation
VNDetectedObjectObservation
VNFaceObservation
…
RequestHandler
VNImageRequestHandler
IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZXXEDΑΓ
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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
}
}
})
}()
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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
}
}
})
}()
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ͱΓ͋͑ͣͰ͖ͨ
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͕ɺ
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όʔίʔυ͕Ͳ͜ʹ͋Δ͔Θ͔͚ͬͨͲɺ
༰ʢ&"/ίʔυʣ͔Βͳ͔ͬͨʜ
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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
}
}
})
}()
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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
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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
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·ͱΊ
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