Hi there,

After doing a pod install, I tried to run the test, and I get a compile error on the import of the framework:

The line
@testable import openalpr_swift

gives an error:

Could not build Objective-C module 'openalpr_swift'

Is possible to have an integration with Swift Package Manager?

I am testing this library on a iPhone 7 with iOS 12.
Unfortunately the detection always returns an empty array.
I use the camera feed to test (with .480p resolution) but also providing a sample image does not yield any results.
When using OpenALPR in Python on OSX, the same image succeeds.

Am I missing something?

alprScanner = OAScanner(country:"eu")
[..]

alprScanner!.scanImage(image, onSuccess: { (plates) in
                print(plates)
                if let plates = plates, let first = plates.first{
                    DispatchQueue.main.sync {
                        self.carPlateNumber.text = first.number
                    }
                }
                else{
                    DispatchQueue.main.sync {
                        self.carPlateNumber.text = "?"
                    }
                }
            }, onFailure: { (error) in
                DispatchQueue.main.sync {
                    self.carPlateNumber.text = "Error"
                }
            })

I currently try to include the OpenALPR in a Project, where I can take pictures of a plate and the app should recognise the plate. However for some reason it does not work...

This is the capturePhoto-function:

It is the following command:
cameraOutput.capturePhoto(with: settings, delegate: self)

which calls the following function:

func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) { if let photoData = photo.fileDataRepresentation() { capturedImage = UIImage(data: photoData) showLicenseInfoView() } }

And the showLicenseInfoView-function looks like this:

`func showLicenseInfoView() {

    // scanning the image
    if let licenseText = scanLicensePlate(forImage: capturedImage!) {
        print(licenseText)
        licensePlateLabel.text = licenseText
    }
    
    // add the licenseInformationView as a subview to the main view
    self.view.addSubview(licenseInformationView)
    
    // configuring the licenseInformationView
    licenseInformationView.layer.cornerRadius = 10 // slightly rounding the corners of the liceseInformationView
    let height = self.view.frame.height * 0.8 // height of the license info
    let width = self.view.frame.width * 0.9 // width of the license info
    let posX = self.view.center.x - width / 2 // license info's x-position
    let posY = self.view.safeAreaInsets.top + 3 // license info's y-position
    licenseInformationView.frame = CGRect(x: posX, y: posY, width: width, height: height) // setting up the licenseInformationView with size and positions
    licenseInformationView.transform = CGAffineTransform.init(scaleX: 0.7, y: 0.7) // scale it down to get a popUp-effect when appearing
    licenseInformationView.alpha = 0 // making it invisible
    
    // animate the window's popUp
    UIView.animate(withDuration: 0.2) {
        self.blurEffectView.effect = self.blurEffect // adding the blur-effect
        self.licenseInformationView.alpha = 1 // making the licenseInformationView visible
        self.licenseInformationView.transform = CGAffineTransform.identity // resizing the licenseInformationView to its original size
    }
}`

However the licenseText is still nil and the licensePlateLabel doesn't get assigned...
I really need help cause I have no goddamn idea why it doesn't work 😂

Hey, I followed your installation instructions and everything seems to be correct so far. But when I try to recognize a basic image (even the official example image http://plates.openalpr.com/h786poj.jpg) I get no results. I followed you example closely and have the following code:

let image = UIImage(named: "testImage")! let alprScanner = OAScanner(country: "eu", patternRegion: "de") print("ALPR version: \(alprScanner?.version())") alprScanner?.scanImage(image, onSuccess: { (plates) in print("found \(plates?.count) plate(s)") plates?.forEach({ (plate) in print("result: \(plate.number) : confidence: \(plate.confidence)") }) }, onFailure: { (error) in print("error: \(error)") })
All I'm getting is
ALPR version: 2.3.0 found Optional(0) plate(s)

Do you have any ideas what I might be doing wrong?

Hello,
This class is also working well on a video stream (with CoreVideo.framework) but the plates are not localized and read when they are slightly rotated (> 15 ° / 20 °) - I know it's not a bug but a feature ... but is it possible to make a change allowing the location of the plates whatever their angle of rotation ? Thanks in advance for your help and reply.
OldNick

Hi there,

The code comes under GPL-3 and cannot be used in any iOS app according to AppStore licensing rules.

Hi,
first of all I want to say that this class working well with static image, but i cannot used it with UIIMAGE.
Another thing that can be useful: plate position (x,y) is not returning in plate object, maybe will be implemented

Regards and congratulation

Rodolfo

here my code

// Convert cropped image ref to UIImage
let imageToSave = UIImage(cgImage: imageRef, scale: 1.0, orientation: .right)

    print("image: \(String(describing: imageToSave.size))") // Your Image
    self.captureImageView.image = imageToSave
    self.captureImageView.isHidden = false
    
    if let data = UIImageJPEGRepresentation(imageToSave, 1) {
        let filename = getDocumentsDirectory().appendingPathComponent("targa.jpg")
        try? data.write(to: filename)
        let imagePath = filename.path
        
        
        // let imagePath = Bundle.main.path(forResource: "targadk", ofType: "jpg")
        let alprScanner = OAScanner(country: "eu", patternRegion: "dk")
        
        //alprScanner?.scanImage(imageToSave, onSuccess: {
        alprScanner?.scanImage(atPath: imagePath , onSuccess: {
            // alprScanner?.scanImage(newPhoto , onSuccess: {
            (plates) in
            plates?.forEach({ (plate) in
                print("result: \(plate.number)")
                
                print(plate)
            })
        }, onFailure: { (error) in
            print("error: \(String(describing: error?.localizedDescription))")
        })

        
        
    }

One question for you. How do you compile openalpr into iOS library? Thanks.

Got the following error message:

[!] The 'Pods-OCRTest' target has transitive dependencies that include static binaries: (/Users/a635219/Projects/test/OCRTest/Pods/OpenCV/opencv2.framework)

After installing pod, I am trying to run the code and build is successful but unable to open the app in simulator.

dyld: lazy symbol binding failed: can't resolve symbol ___cxa_guard_acquire in /Users/52127608/Library/Developer/CoreSimulator/Devices/FC163F57-3BF9-4CDA-9E24-DAA7C8EADBC1/data/Containers/Bundle/Application/A97B39AF-FC7A-4AC0-9503-C36DF7265780/NJEZPass.app/NJEZPass because dependent dylib #1 could not be loaded
dyld: can't resolve symbol ___cxa_guard_acquire in /Users/52127608/Library/Developer/CoreSimulator/Devices/FC163F57-3BF9-4CDA-9E24-DAA7C8EADBC1/data/Containers/Bundle/Application/A97B39AF-FC7A-4AC0-9503-C36DF7265780/NJEZPass.app/NJEZPass because dependent dylib #1 could not be loaded

Is there a way to update the openalpr.conf file without having to create a version of the pod?

Some times loss letter.
Some times rec I，O，Z to 1,0,2.