Question

我试图用一个按钮构建一个简单的应用程序。单击按钮拍照，然后使用"TesseractOCR"将图像中的书面文本转换为字符串文本并在“文本视图”中查看。

我已经完成了一切，相机和“ TesseractOCR”，我面临的唯一问题是：

 tesseract.image = UIImage(named: selectedImage)

给我这个错误：

无法将类型“ UIImage”的值转换为预期的参数类型“字符串”。

注意：selectedImage假设是Tesseract将图像转换为文本所用图像的名称。

这是我的代码：

import UIKit
import TesseractOCR

class secondViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate, G8TesseractDelegate  {

    @IBOutlet weak var viewText: UITextView!

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }

    @IBAction func takePhoto(_ sender: Any) {
        if UIImagePickerController.isSourceTypeAvailable(UIImagePickerController.SourceType.camera) {
            let imagePicker = UIImagePickerController()
            imagePicker.delegate = self
            imagePicker.sourceType = UIImagePickerController.SourceType.camera
            imagePicker.allowsEditing = false
            self.present(imagePicker, animated: true, completion: nil)
        }
    }


    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {

        // The info dictionary may contain multiple representations of the image. You want to use the original.
        guard let selectedImage = info[.originalImage] as? UIImage else {
            fatalError("Expected a dictionary containing an image, but was provided the following: \(info)")
        }

        // Set photoImageView to display the selected image.
        if let tesseract = G8Tesseract(language: "eng") {
            tesseract.delegate = self
            tesseract.image = UIImage(named: selectedImage)
            tesseract.recognize()

            textView.text = tesseract.recognizedText

        }

        // Dismiss the picker.
        dismiss(animated: true, completion: nil)
    }

}

Answer 1

替换

tesseract.image = UIImage(named: selectedImage)

使用

tesseract.image = selectedImage

UIImage(named:<#string#>)采用字符串值来压制捆绑包中的图像名称，但是在这里您不需要它，而是直接提供图像

如何处理拍摄的图像，然后使用Swift将结果查看为“文本视图”？

1 个答案: