create-vision-request.swift

func createVisionRequest(image: UIImage){
        
        currentImage = image
        guard let cgImage = image.cgImage else {
            return
        }
        let requestHandler = VNImageRequestHandler(cgImage: cgImage, orientation: image.cgImageOrientation, options: [:])
        let vnRequests = [vnTextDetectionRequest]
        
        DispatchQueue.global(qos: .background).async {
            do{
                try requestHandler.perform(vnRequests)
            }catch let error as NSError {
                print("Error in performing Image request: \(error)")
            }
        }
        
}