reader1.swift

func scanText() {
        var superString:String = ""
        let requestHandler = VNImageRequestHandler(cgImage: (selectedImage?.cgImage)!)
        let request = VNRecognizeTextRequest{ (request, error) in
            guard let observations = request.results as? [VNRecognizedTextObservation] else { return }
            for textObjects in observations {
                let topCandiate = textObjects.topCandidates(1)
                if let recognizedText = topCandiate.first {
                    print(recognizedText.string)
                    superString += recognizedText.string
                }
            }
        }
        request.recognitionLevel = .accurate
        try? requestHandler.perform([request])
        strings.append(superString)
}