Image Classifer does not show results in Classification Label in Xcode - swift

Question

I tried to make an image classification app. For some reason, the classification label doesn't show any results. Below is my code, would appreciate all your helps.enter image description here
===
import UIKit
import CoreML
import Vision
class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
#IBOutlet weak var myImageView: UIImageView!
let picker = UIImagePickerController()
#IBAction func cameraButton(_ sender: UIBarButtonItem) {
let vc = UIImagePickerController()
vc.sourceType = .camera
vc.allowsEditing = false
vc.delegate = self
present(vc, animated: true)
}
#IBAction func photoButton(_ sender: UIBarButtonItem) {
picker.allowsEditing = false
picker.sourceType = .photoLibrary
picker.mediaTypes = UIImagePickerController.availableMediaTypes(for: .photoLibrary)!
present(picker, animated: true, completion: nil)
}
#IBOutlet weak var classificationLabel: UILabel!
/// Image classification
lazy var classificationRequest: VNCoreMLRequest = {
do {
let model = try VNCoreMLModel(for: AnimalClassifier().model)
let request = VNCoreMLRequest(model: model, completionHandler: { [weak self] request, error in
self?.processClassifications(for: request, error: error)
})
request.imageCropAndScaleOption = .centerCrop
return request
} catch {
fatalError("Failed to load Vision ML model: \(error)")
}
}()
func updateClassifications(for Image: UIImage) {
classificationLabel.text = "Classifying..."
let orientation = CGImagePropertyOrientation(Image.imageOrientation)
guard let ciImage = CIImage(image: Image) else { fatalError("Unable to create \(CIImage.self) from \(Image).") }
DispatchQueue.global(qos: .userInitiated).async {
let handler = VNImageRequestHandler(ciImage: ciImage, orientation: orientation)
do {
try handler.perform([self.classificationRequest])
} catch {
print("Failed to perform classification.\n\(error.localizedDescription)")
}
}
}
func processClassifications(for request: VNRequest, error: Error?) {
DispatchQueue.main.async {
guard let results = request.results else {
self.classificationLabel.text = "Unable to classify image.\n\(error!.localizedDescription)"
return
}
let classifications = results as! [VNClassificationObservation]
if classifications.isEmpty {
self.classificationLabel.text = "Nothing recognized."
} else {
// Display top classifications ranked by confidence in the UI.
let topClassifications = classifications.prefix(2)
let descriptions = topClassifications.map { classification in
// Formats the classification for display; e.g. "(0.37) cliff, drop, drop-off".
return String(format: " (%.2f) %#", classification.confidence, classification.identifier)
}
self.classificationLabel.text = "Classification:\n" + descriptions.joined(separator: "\n")
}
}
}
override func viewDidLoad() {
super.viewDidLoad()
picker.delegate = self
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
var Image: UIImage
if let possibleImage = info[.editedImage] as? UIImage {
Image = possibleImage
} else if let possibleImage = info[.originalImage] as? UIImage {
Image = possibleImage
} else {
return
}
myImageView.image = Image
dismiss(animated: true)
updateClassifications(for: Image)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
dismiss(animated: true, completion: nil)
}
}

Answer 1

To make your label support multiple lines you need to set the property numberOfLines to 0. So in viewDidLoad for instance do
classificationLabel.numberOfLines = 0