''' <summary>
''' Recognizes the line of handwritten digits.
''' </summary>
''' <param name="image">The image.</param>
''' <returns>Recognized line.</returns>
Public Shared Function RecognizeHandwrittenLineUsingHandwrittenDigitsOcrEngine(image As Vintasoft.Imaging.VintasoftImage) As String
    ' create OCR engine for recognition of handwritten digits
    Dim ocrEngine As New Vintasoft.Imaging.Ocr.ML.HandwrittenDigits.HandwrittenDigitsOcrEngine()

    ' create OCR settings for recognition of handwritten digits
    Dim ocrSettings As New Vintasoft.Imaging.Ocr.ML.HandwrittenDigits.HandwrittenDigitsOcrSettings()
    ocrSettings.CharWhiteList = "1234567890"

    ' init OCR engine
    ocrEngine.Init(ocrSettings)

    ' recognize line of handwritten digits
    Dim page As Vintasoft.Imaging.Ocr.Results.OcrPage = ocrEngine.Recognize(image)
    Dim textRegion As Vintasoft.Imaging.Ocr.Results.OcrTextRegion = DirectCast(page.Regions(0), Vintasoft.Imaging.Ocr.Results.OcrTextRegion)

    ' print result
    System.Console.WriteLine(String.Format("{0}: {1}%", textRegion.Text, textRegion.Confidence))

    Return textRegion.Text
End Function

/// <summary>
/// Recognizes the line of handwritten digits.
/// </summary>
/// <param name="image">The image.</param>
/// <returns>Recognized line.</returns>
public static string RecognizeHandwrittenLineUsingHandwrittenDigitsOcrEngine(Vintasoft.Imaging.VintasoftImage image)
{
    // create OCR engine for recognition of handwritten digits
    Vintasoft.Imaging.Ocr.ML.HandwrittenDigits.HandwrittenDigitsOcrEngine ocrEngine =
        new Vintasoft.Imaging.Ocr.ML.HandwrittenDigits.HandwrittenDigitsOcrEngine();
    
    // create OCR settings for recognition of handwritten digits
    Vintasoft.Imaging.Ocr.ML.HandwrittenDigits.HandwrittenDigitsOcrSettings ocrSettings = 
        new Vintasoft.Imaging.Ocr.ML.HandwrittenDigits.HandwrittenDigitsOcrSettings();
    ocrSettings.CharWhiteList = "1234567890";
    
    // init OCR engine
    ocrEngine.Init(ocrSettings);

    // recognize line of handwritten digits
    Vintasoft.Imaging.Ocr.Results.OcrPage page = ocrEngine.Recognize(image);
    Vintasoft.Imaging.Ocr.Results.OcrTextRegion textRegion = (Vintasoft.Imaging.Ocr.Results.OcrTextRegion)page.Regions[0];

    // print result
    System.Console.WriteLine(string.Format("{0}: {1}%", textRegion.Text, textRegion.Confidence));
    
    return textRegion.Text;
}