CODEWITHSUNDEEP
iosmicroblink
coco
coco

Reputation: 3136

Microblink: reading an image

I'm asking the Microblink care reader to look at a photo of a card, rather than using the camera:

lazy var blinkCardRecognizer: MBCBlinkCardRecognizer = {
    return MBCBlinkCardRecognizer()
}()
lazy var recognizerCollection: MBCRecognizerCollection = {
    blinkCardRecognizer.extractCvv = false
    blinkCardRecognizer.extractIban = false
    blinkCardRecognizer.extractExpiryDate = false
    
    let recognizerList = [blinkCardRecognizer]
    return MBCRecognizerCollection(recognizers: recognizerList)
}()

My class has declared these two delegates:

MBCBlinkCardOverlayViewControllerDelegate, MBCScanningRecognizerRunnerDelegate

I'm sure that I'm passing this function a correct UIImage, and I do get to the processImage call:

func prepareToReadImage(_ theImage: UIImage?) {
    let recognizerRunner: MBCRecognizerRunner = MBCRecognizerRunner(recognizerCollection: recognizerCollection)
    recognizerRunner.scanningRecognizerRunnerDelegate = self
    
    var image: MBCImage? = nil
    if let anImage = theImage {
        image = MBCImage(uiImage: anImage)
    }
    image?.cameraFrame = true
    image?.orientation = MBCProcessingOrientation.left
    let _serialQueue = DispatchQueue(label: "com.microblink.DirectAPI-sample-swift")
    _serialQueue.async(execute: {() -> Void in
        recognizerRunner.processImage(image!)
    })
}

But this callback is not being hit:

func recognizerRunner(_ recognizerRunner: MBCRecognizerRunner, didFinishScanningWith state: MBCRecognizerResultState) {
    if state == .valid {
        print (state)
    }
}

Can you see why it isn't? Does it matter that I see the log warning You are using time-limited license key!?

Upvotes: 1

Views: 158

Answers (1)

mipar
mipar

Reputation: 196

From the presented code, I can see that the recognizerRunner and the prepareToReadImage methods have been entered correctly. However, in the first block of code, where you're defining the recognizer and the recognizerCollection, I can see that the issue could be with the MBCRecognizerCollection since its parameter, recognizers, is of type [MBCRecognizer], and you're placing there [MBCBlinkCardRecognizer]. I can suggest this solution to see if it works:

    blinkCardRecognizer = MBCBlinkCardRecognizer()
    var recognizerList = [MBCRecognizer]()
    
    let recognizerCollection: MBCRecognizerCollection = {
        blinkCardRecognizer.extractCvv = false
        blinkCardRecognizer.extractIban = false
        blinkCardRecognizer.extractExpiryDate = false
        
        recognizerList.append(blinkCardRecognizer!)
        return MBCRecognizerCollection(recognizers: recognizerList)
    }()

    recognizerRunner = MBCRecognizerRunner(recognizerCollection: recognizerCollection)

The only difference is that I've previously defined the BlinkCardRecognizer and the RecognizerRunner, so that should not make any difference:

private var recognizerRunner: MBCRecognizerRunner?
private var blinkCardRecognizer: MBCBlinkCardRecognizer?

Just to add here, it does not matter if you see the You are using time-limited license key!, it is simply an indicator that you using a time-limited key and it should not affect the scanning process.

Upvotes: 1

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