如何顯示從Tessnet（Tesseract）獲得的tif座標的圖像

Question

我正在用Tessnet作爲C＃包裝器在tesseract引擎上運行OCR。我已經獲得了識別單詞的圖像座標，並且我想使用這些座標來僅顯示頁面的那一部分。我不關心這個頁面部分是保存爲一個單獨的圖像，還是隻是突出顯示了tif圖像的部分。

這裏是我當前的代碼：

TextWriter tw = new StreamWriter(@"U:\user files\bwalker\ocrTesting.txt"); 
      Bitmap image = new Bitmap(@"u:\user files\bwalker\2849257.tif"); 
      tessnet2.Tesseract ocr = new tessnet2.Tesseract(); 
      ocr.SetVariable("tessedit_char_whitelist", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.,$-/#&=()\"':?"); // If digit only 
      ocr.Init(@"C:\Users\bwalker\Documents\Visual Studio 2010\Projects\tessnetWinForms\tessnetWinForms\bin\Release\", "eng", false); // To use correct tessdata 
      List<tessnet2.Word> result = ocr.DoOCR(image, System.Drawing.Rectangle.Empty); 
      string Results = ""; 
      foreach (tessnet2.Word word in result) 
      { 
       Results += word.Confidence + ", " + word.Text + ", " +word.Top+", "+word.Bottom+", "+word.Left+", "+word.Right+"\n"; 
      } 
      using (StreamWriter writer = new StreamWriter(@"U:\user files\bwalker\ocrTesting2.txt", true)) 
      { 
       writer.WriteLine(Results); 
       writer.Close(); 
      } 
      MessageBox.Show("Completed"); 

而這裏所產生的.txt文件的一部分：

14, Due, 105, 136, 1886, 1962 
89, Date, 105, 136, 1978, 2064 
50, 06/16/2009, 105, 136, 2298, 2504 

Answer 1

我已經解決了這一點。獲取單詞的座標後，我正在執行此操作以顯示相關圖像：

System.Drawing.Rectangle dueDateRectangle = new System.Drawing.Rectangle(dueDateRect1, dueDateRect2, dueDateRect4 - dueDateRect1, dueDateRect3 - dueDateRect2); 
System.Drawing.Imaging.PixelFormat format = image.PixelFormat; 
Bitmap cloneBitmap = image.Clone(dueDateRectangle, format); 
MemoryStream ms = new MemoryStream(); 
cloneBitmap.Save(ms, ImageFormat.Png); 
ms.Position = 0; 
BitmapImage dueDateImage = new BitmapImage(); 
dueDateImage.BeginInit(); 
dueDateImage.StreamSource = ms; 
dueDateImage.EndInit(); 
dueDateImageBox.Source = dueDateImage;