public string GetTextIronOCR(string path)
{
if (IronOcr.License.IsValidLicense(LicenseKey))
{
IronOcr.License.LicenseKey = LicenseKey;
}
else
{
return("");
}
var advancedOCR = new IronOcr.AdvancedOcr()
{
CleanBackgroundNoise = false,
ColorDepth = 4,
ColorSpace = IronOcr.AdvancedOcr.OcrColorSpace.GrayScale,
EnhanceContrast = true,
DetectWhiteTextOnDarkBackgrounds = false,
RotateAndStraighten = false,
Language = IronOcr.Languages.English.OcrLanguagePack,
EnhanceResolution = false,
InputImageType = IronOcr.AdvancedOcr.InputTypes.Document,
ReadBarCodes = true,
Strategy = IronOcr.AdvancedOcr.OcrStrategy.Advanced
};
IronOcr.AutoOcr _OCR = new IronOcr.AutoOcr();
IronOcr.OcrResult ocrResult = advancedOCR.ReadPdf(path, 2);
var Pages = ocrResult.Pages;
var Barcodes = ocrResult.Barcodes;
var FullPdfText = ocrResult.Text;
return(FullPdfText);
}
/// <summary>
/// Compares an IronOcr.OcrResult against a Text File with the true text of a document.
///
/// Copyright 2018 https://ironsoftware.com/csharp/ocr/
/// </summary>
/// <param name="Result">the IronOCR OcrResult</param>
/// <param name="ComparisonFilePath">A text file path which contains the exact text of the original document.</param>
/// <returns></returns>
public static decimal Compare(IronOcr.OcrResult Result, string ComparisonFilePath)
{
string OCRText = Result.Text;
string TrueText = File.ReadAllText(ComparisonFilePath);
OCRText = NormalizeWhiteSpace(OCRText);
TrueText = NormalizeWhiteSpace(TrueText);
OCRText = NormalizePunctuation(OCRText);
TrueText = NormalizePunctuation(TrueText);
int StringDistance = LevenshteinStringDistance(OCRText, TrueText);
decimal PercentageMatch = 100M * ((decimal)TrueText.Length - (decimal)StringDistance) / (decimal)TrueText.Length;
decimal RoundedResult = Math.Round(PercentageMatch, 1);
Console.WriteLine("");
Console.WriteLine("OCR Accuracy was {0} %", RoundedResult);
Console.WriteLine("");
return(RoundedResult);
}
