ImGearRecognition recognitionEngine = new ImGearRecognition(resourcePath);

ImGearOCR recognitionEngine = ImGearOCR.Create(resourcePath);

ImGearRecPage recognitionPage = recognitionEngine.ImportPage((ImGearRasterPage)igPage);

ImGearOCRPage ocrPage = recognitionEngine.ImportPage((ImGearRasterPage)igPage);

foreach(ImGearRecLanguage lang in ImGearRecLanguage_collection)
     recognitionEngine.Recognition.LanguageEnabled[lang] = true;

foreach(ImGearOCRLanguage lang in ImGearOCRLanguage_collection)
     recognitionEngine.Settings.LanguageEnabled[lang] = true;

ImGearRecZone zone = new ImGearRecZone();
zone.Rect.Left = 0;
zone.Rect.Top = 0;
zone.Rect.Right = rasterPage.DIB.Width - 1;
zone.Rect.Bottom = rasterPage.DIB.Height - 1;
recognitionPage.Zones.Add(zone);

ImGearOCRZone zone = new ImGearOCRZone();
zone.Rect.Left = 0;
zone.Rect.Top = 0;
zone.Rect.Right = rasterPage.DIB.Width - 1;
zone.Rect.Bottom = rasterPage.DIB.Height - 1;
recognitionPage.Zones.Add(zone);

// Reduce to bitonal
recPage.Image.ReduceToBitonal(ImGearRecReductionMode.AUTO, 50, 0, ImGearRecResEnhancementMode.YES);
// Invert the image
recPage.Image.Invert();
// Despeckle
recPage.Image.Despeckle();
// Deskew and unorient
int slope;
ImGearRecOrientationMode orient;
recPage.Image.DetectSkew(out slope, out orient);
recPage.Image.Orient(orient);
recPage.Image.Deskew(slope);

// Reduce to bitonal
ocrPage.Image.ReduceToBitonal(ImGearOCRReductionMode.AUTO, 50, 0)
// Invert the image
ocrPage.Image.Invert();
// Despeckle
ocrPage.Image.Despeckle();
// Deskew and unorient
int slope;
ImGearOCROrientationMode orient;
ocrPage.Image.DetectSkew(out slope, out orient);
ocrPage.Image.Orient(orient);
ocrPage.Image.Deskew(slope);

rec.Preprocessing.OrientationMode = ImGearRecOrientationMode.AUTO;
rec.Preprocessing.DeskewMode = ImGearRecDeskewMode.AUTO;
rec.Preprocessing.DespeckleMode = true;
rec.Preprocessing.InversionMode = true;
recPage.Image.Preprocess();

ocr.Preprocessing.OrientationMode = ImGearOCROrientationMode.AUTO;
ocr.Preprocessing.DeskewMode = ImGearOCRDeskewMode.AUTO;
ocr.Preprocessing.DespeckleMode = true;
ocr.Preprocessing.InversionMode = true;
ocrPage.Image.Preprocess();

recPage.Recognize();

ocrPage.Recognize();

ImGearRecLetter[] letters = recPage.GetLetters();
// ... do something with letters

ImGearOCRLetter[] letters = ocrPage.GetLetters();
// ... do something with letters

void WriteDirectText(ImGearOCRPage, string);
void WriteDirectText(ImGearOCRPage[], string);
void WriteDirectText(ImGearOCRPage, Stream);
void WriteDirectText(ImGearOCRPage[], Stream);

using (ImGearPDFDocument pdfDocument = new ImGearPDFDocument())
{
    recPage.CreatePDFPage(pdfDocument, somePDFOptions);
    pdfDocument.Save(outputPDFPath, ImGearSavingFormats.PDF, 0, 0, (int)ImGearPDFPageRange.ALL_PAGES, ImGearSavingModes.OVERWRITE);
}

using (ImGearPDFDocument pdfDocument = new ImGearPDFDocument())
{
    ocrPage.CreatePDFPage(pdfDocument, somePDFOptions);
    pdfDocument.Save(outputPDFPath, ImGearSavingFormats.PDF, 0, 0, (int)ImGearPDFPageRange.ALL_PAGES, ImGearSavingModes.OVERWRITE);
}

try
{
    // Some OCR operation
}
catch(ImGearOCRException ex)
{
    Console.WriteLine("OCR-specific exception: " + ex.Message);
}
catch(Exception ex)
{
    Console.WriteLine("Generic exception: " + ex.Message);
}