// OmniPage: Ceremony required on EVERY entry point — init, process, shutdown
using var engine = new OmniPageEngine();
engine.SetLicenseFile(@"C:\Program Files\OmniPage\license.lic"); // File must exist here
engine.Initialize();   // Network call to license server — can fail for license reasons, not OCR reasons

var document = engine.CreateDocument();
document.AddPage("invoice.jpg");
document.Recognize(new RecognitionSettings { Language = "English" });
string text = document.GetText();
document.Dispose();    // Must not be skipped
engine.Shutdown();     // Must not be skipped — omitting this locks a floating seat

// OmniPage: Ceremony required on EVERY entry point — init, process, shutdown
using var engine = new OmniPageEngine();
engine.SetLicenseFile(@"C:\Program Files\OmniPage\license.lic"); // File must exist here
engine.Initialize();   // Network call to license server — can fail for license reasons, not OCR reasons

var document = engine.CreateDocument();
document.AddPage("invoice.jpg");
document.Recognize(new RecognitionSettings { Language = "English" });
string text = document.GetText();
document.Dispose();    // Must not be skipped
engine.Shutdown();     // Must not be skipped — omitting this locks a floating seat

// IronOCR: One NuGet package, one line at startup, one call to read
IronOcr.License.LicenseKey = "YOUR-LICENSE-KEY"; // At app startup — once, ever
var text = new IronTesseract().Read("invoice.jpg").Text;

// IronOCR: One NuGet package, one line at startup, one call to read
IronOcr.License.LicenseKey = "YOUR-LICENSE-KEY"; // At app startup — once, ever
var text = new IronTesseract().Read("invoice.jpg").Text;

// Before (Kofax OmniPage)
using Kofax.OmniPage.CSDK;
using Kofax.OmniPageCSDK;
using CSDK;

// After (IronOCR)
using IronOcr;

// Before (Kofax OmniPage)
using Kofax.OmniPage.CSDK;
using Kofax.OmniPageCSDK;
using CSDK;

// After (IronOCR)
using IronOcr;

// OmniPage: try/finally required everywhere to protect license seat release
public string ProcessInvoice(string imagePath)
{
    var engine = new OmniPageEngine();
    engine.SetLicenseFile(@"C:\Program Files\OmniPage\license.lic");

    try
    {
        engine.Initialize(); // Contacts license server — failure here locks nothing
        var document = engine.CreateDocument();

        try
        {
            document.AddPage(imagePath);
            document.Recognize(new RecognitionSettings { Language = "English" });
            return document.GetText();
        }
        catch (RecognitionException ex)
        {
            // Log, rethrow — but Shutdown must still be called
            throw new OcrProcessingException("Recognition failed", ex);
        }
        finally
        {
            document.Dispose(); // Inner finally: release document
        }
    }
    catch (LicenseValidationException ex)
    {
        throw new OcrProcessingException("License validation failed", ex);
    }
    finally
    {
        engine.Shutdown(); // Outer finally: release license seat — MUST execute
    }
}

// OmniPage: try/finally required everywhere to protect license seat release
public string ProcessInvoice(string imagePath)
{
    var engine = new OmniPageEngine();
    engine.SetLicenseFile(@"C:\Program Files\OmniPage\license.lic");

    try
    {
        engine.Initialize(); // Contacts license server — failure here locks nothing
        var document = engine.CreateDocument();

        try
        {
            document.AddPage(imagePath);
            document.Recognize(new RecognitionSettings { Language = "English" });
            return document.GetText();
        }
        catch (RecognitionException ex)
        {
            // Log, rethrow — but Shutdown must still be called
            throw new OcrProcessingException("Recognition failed", ex);
        }
        finally
        {
            document.Dispose(); // Inner finally: release document
        }
    }
    catch (LicenseValidationException ex)
    {
        throw new OcrProcessingException("License validation failed", ex);
    }
    finally
    {
        engine.Shutdown(); // Outer finally: release license seat — MUST execute
    }
}

// IronOCR: No license seat to release, no engine to shut down
public string ProcessInvoice(string imagePath)
{
    using var input = new OcrInput();
    input.LoadImage(imagePath);

    var ocr = new IronTesseract();
    var result = ocr.Read(input);
    return result.Text;
    // OcrInput disposal is automatic — no license implications on any code path
}

// IronOCR: No license seat to release, no engine to shut down
public string ProcessInvoice(string imagePath)
{
    using var input = new OcrInput();
    input.LoadImage(imagePath);

    var ocr = new IronTesseract();
    var result = ocr.Read(input);
    return result.Text;
    // OcrInput disposal is automatic — no license implications on any code path
}

// OmniPage: Zone-based form extraction with template management
public Dictionary<string, string> ExtractInvoiceFields(string invoicePath)
{
    using var engine = new OmniPageEngine();
    engine.SetLicenseFile(licensePath);
    engine.Initialize();

    // Define zones per document template
    var zones = new List<FormZone>
    {
        new FormZone { Name = "InvoiceNumber", Type = "OCR",
            X = 520, Y = 80, Width = 200, Height = 30 },
        new FormZone { Name = "InvoiceDate",   Type = "OCR",
            X = 520, Y = 120, Width = 200, Height = 30 },
        new FormZone { Name = "TotalAmount",   Type = "OCR",
            X = 520, Y = 580, Width = 200, Height = 30 },
        new FormZone { Name = "VendorName",    Type = "OCR",
            X = 50,  Y = 80,  Width = 300, Height = 40 }
    };

    var template = new FormTemplate { Name = "StandardInvoice", Zones = zones };
    var settings = new RecognitionSettings { Language = "English" };

    var document = engine.CreateDocument();
    document.AddPage(invoicePath);
    document.ApplyTemplate(template);
    document.Recognize(settings);

    var fields = new Dictionary<string, string>();
    foreach (var zone in zones)
        fields[zone.Name] = document.GetZoneText(zone.Name);

    document.Dispose();
    engine.Shutdown();
    return fields;
}

// OmniPage: Zone-based form extraction with template management
public Dictionary<string, string> ExtractInvoiceFields(string invoicePath)
{
    using var engine = new OmniPageEngine();
    engine.SetLicenseFile(licensePath);
    engine.Initialize();

    // Define zones per document template
    var zones = new List<FormZone>
    {
        new FormZone { Name = "InvoiceNumber", Type = "OCR",
            X = 520, Y = 80, Width = 200, Height = 30 },
        new FormZone { Name = "InvoiceDate",   Type = "OCR",
            X = 520, Y = 120, Width = 200, Height = 30 },
        new FormZone { Name = "TotalAmount",   Type = "OCR",
            X = 520, Y = 580, Width = 200, Height = 30 },
        new FormZone { Name = "VendorName",    Type = "OCR",
            X = 50,  Y = 80,  Width = 300, Height = 40 }
    };

    var template = new FormTemplate { Name = "StandardInvoice", Zones = zones };
    var settings = new RecognitionSettings { Language = "English" };

    var document = engine.CreateDocument();
    document.AddPage(invoicePath);
    document.ApplyTemplate(template);
    document.Recognize(settings);

    var fields = new Dictionary<string, string>();
    foreach (var zone in zones)
        fields[zone.Name] = document.GetZoneText(zone.Name);

    document.Dispose();
    engine.Shutdown();
    return fields;
}

// IronOCR: CropRectangle targets specific regions — no template management
public Dictionary<string, string> ExtractInvoiceFields(string invoicePath)
{
    var fields = new Dictionary<string, string>();
    var ocr = new IronTesseract();

    // Extract each field by reading only the target region
    var fieldRegions = new Dictionary<string, CropRectangle>
    {
        ["InvoiceNumber"] = new CropRectangle(520, 80,  200, 30),
        ["InvoiceDate"]   = new CropRectangle(520, 120, 200, 30),
        ["TotalAmount"]   = new CropRectangle(520, 580, 200, 30),
        ["VendorName"]    = new CropRectangle(50,  80,  300, 40)
    };

    foreach (var (fieldName, region) in fieldRegions)
    {
        using var input = new OcrInput();
        input.LoadImage(invoicePath, region);
        fields[fieldName] = ocr.Read(input).Text.Trim();
    }

    return fields;
}

// IronOCR: CropRectangle targets specific regions — no template management
public Dictionary<string, string> ExtractInvoiceFields(string invoicePath)
{
    var fields = new Dictionary<string, string>();
    var ocr = new IronTesseract();

    // Extract each field by reading only the target region
    var fieldRegions = new Dictionary<string, CropRectangle>
    {
        ["InvoiceNumber"] = new CropRectangle(520, 80,  200, 30),
        ["InvoiceDate"]   = new CropRectangle(520, 120, 200, 30),
        ["TotalAmount"]   = new CropRectangle(520, 580, 200, 30),
        ["VendorName"]    = new CropRectangle(50,  80,  300, 40)
    };

    foreach (var (fieldName, region) in fieldRegions)
    {
        using var input = new OcrInput();
        input.LoadImage(invoicePath, region);
        fields[fieldName] = ocr.Read(input).Text.Trim();
    }

    return fields;
}

// OmniPage: Structured output requires format configuration and file export
public void ExtractStructuredContent(string imagePath, string outputDir)
{
    using var engine = new OmniPageEngine();
    engine.SetLicenseFile(licensePath);
    engine.Initialize();

    var settings = new RecognitionSettings { Language = "English" };
    var document = engine.CreateDocument();
    document.AddPage(imagePath);
    document.Recognize(settings);

    // Word-level coordinates through result iterator
    var iterator = document.GetResultIterator(ResultIteratorLevel.Word);
    while (iterator.MoveNext())
    {
        string word = iterator.GetText();
        var bounds = iterator.GetBoundingBox();
        double confidence = iterator.GetConfidence();
        Console.WriteLine($"Word: {word} at ({bounds.X},{bounds.Y}) conf:{confidence:F1}%");
    }

    // Structured export requires separate output format configuration
    var outputSettings = new OutputSettings
    {
        Format = OutputFormat.XML,
        IncludeCoordinates = true,
        IncludeConfidence = true
    };
    document.SaveAs(Path.Combine(outputDir, "output.xml"), outputSettings);

    document.Dispose();
    engine.Shutdown();
}

// OmniPage: Structured output requires format configuration and file export
public void ExtractStructuredContent(string imagePath, string outputDir)
{
    using var engine = new OmniPageEngine();
    engine.SetLicenseFile(licensePath);
    engine.Initialize();

    var settings = new RecognitionSettings { Language = "English" };
    var document = engine.CreateDocument();
    document.AddPage(imagePath);
    document.Recognize(settings);

    // Word-level coordinates through result iterator
    var iterator = document.GetResultIterator(ResultIteratorLevel.Word);
    while (iterator.MoveNext())
    {
        string word = iterator.GetText();
        var bounds = iterator.GetBoundingBox();
        double confidence = iterator.GetConfidence();
        Console.WriteLine($"Word: {word} at ({bounds.X},{bounds.Y}) conf:{confidence:F1}%");
    }

    // Structured export requires separate output format configuration
    var outputSettings = new OutputSettings
    {
        Format = OutputFormat.XML,
        IncludeCoordinates = true,
        IncludeConfidence = true
    };
    document.SaveAs(Path.Combine(outputDir, "output.xml"), outputSettings);

    document.Dispose();
    engine.Shutdown();
}

// IronOCR: Structured data directly on OcrResult — no export step
public void ExtractStructuredContent(string imagePath)
{
    var result = new IronTesseract().Read(imagePath);

    Console.WriteLine($"Confidence: {result.Confidence:F1}%");
    Console.WriteLine($"Pages: {result.Pages.Length}");

    foreach (var page in result.Pages)
    {
        foreach (var paragraph in page.Paragraphs)
        {
            Console.WriteLine($"[Paragraph at ({paragraph.X},{paragraph.Y})]");
            Console.WriteLine(paragraph.Text);

            foreach (var word in paragraph.Words)
            {
                // Per-word confidence and coordinates — no iterator needed
                Console.WriteLine(
                    $"  Word: '{word.Text}' " +
                    $"at ({word.X},{word.Y}) " +
                    $"conf: {word.Confidence:F1}%");
            }
        }
    }
}

// IronOCR: Structured data directly on OcrResult — no export step
public void ExtractStructuredContent(string imagePath)
{
    var result = new IronTesseract().Read(imagePath);

    Console.WriteLine($"Confidence: {result.Confidence:F1}%");
    Console.WriteLine($"Pages: {result.Pages.Length}");

    foreach (var page in result.Pages)
    {
        foreach (var paragraph in page.Paragraphs)
        {
            Console.WriteLine($"[Paragraph at ({paragraph.X},{paragraph.Y})]");
            Console.WriteLine(paragraph.Text);

            foreach (var word in paragraph.Words)
            {
                // Per-word confidence and coordinates — no iterator needed
                Console.WriteLine(
                    $"  Word: '{word.Text}' " +
                    $"at ({word.X},{word.Y}) " +
                    $"conf: {word.Confidence:F1}%");
            }
        }
    }
}

// OmniPage: Page-by-page TIFF extraction with per-page lifecycle
public List<string> ExtractFromMultiPageTiff(string tiffPath)
{
    var pageTexts = new List<string>();

    using var engine = new OmniPageEngine();
    engine.SetLicenseFile(licensePath);
    engine.Initialize();

    // Open TIFF and iterate frames
    var tiffContainer = engine.OpenTiff(tiffPath);
    int pageCount = tiffContainer.GetPageCount();

    var settings = new RecognitionSettings { Language = "English" };

    for (int i = 0; i < pageCount; i++)
    {
        var page = tiffContainer.GetPage(i); // Extract frame
        var document = engine.CreateDocument();

        try
        {
            document.AddPage(page);
            document.Recognize(settings);
            pageTexts.Add(document.GetText());
        }
        finally
        {
            document.Dispose(); // Dispose per page to manage memory
        }
    }

    tiffContainer.Dispose();
    engine.Shutdown();
    return pageTexts;
}

// OmniPage: Page-by-page TIFF extraction with per-page lifecycle
public List<string> ExtractFromMultiPageTiff(string tiffPath)
{
    var pageTexts = new List<string>();

    using var engine = new OmniPageEngine();
    engine.SetLicenseFile(licensePath);
    engine.Initialize();

    // Open TIFF and iterate frames
    var tiffContainer = engine.OpenTiff(tiffPath);
    int pageCount = tiffContainer.GetPageCount();

    var settings = new RecognitionSettings { Language = "English" };

    for (int i = 0; i < pageCount; i++)
    {
        var page = tiffContainer.GetPage(i); // Extract frame
        var document = engine.CreateDocument();

        try
        {
            document.AddPage(page);
            document.Recognize(settings);
            pageTexts.Add(document.GetText());
        }
        finally
        {
            document.Dispose(); // Dispose per page to manage memory
        }
    }

    tiffContainer.Dispose();
    engine.Shutdown();
    return pageTexts;
}

// IronOCR: Multi-frame TIFF loaded in one call — all pages in one result
public List<string> ExtractFromMultiPageTiff(string tiffPath)
{
    using var input = new OcrInput();
    input.LoadImageFrames(tiffPath); // All frames loaded automatically

    var result = new IronTesseract().Read(input);

    // Each TIFF frame becomes a page in the result
    return result.Pages.Select(page => page.Text).ToList();
}

// IronOCR: Multi-frame TIFF loaded in one call — all pages in one result
public List<string> ExtractFromMultiPageTiff(string tiffPath)
{
    using var input = new OcrInput();
    input.LoadImageFrames(tiffPath); // All frames loaded automatically

    var result = new IronTesseract().Read(input);

    // Each TIFF frame becomes a page in the result
    return result.Pages.Select(page => page.Text).ToList();
}

// OmniPage: Shared engine with locking to serialize document operations
public ConcurrentDictionary<string, string> ProcessBatchWithEngine(
    string[] imagePaths, string licensePath)
{
    var results = new ConcurrentDictionary<string, string>();
    var engineLock = new object();

    // One engine — document operations must be serialized
    using var engine = new OmniPageEngine();
    engine.SetLicenseFile(licensePath);
    engine.Initialize();

    var settings = new RecognitionSettings { Language = "English" };

    Parallel.ForEach(imagePaths, imagePath =>
    {
        lock (engineLock) // Serialize: one recognition at a time
        {
            var document = engine.CreateDocument();
            try
            {
                document.AddPage(imagePath);
                document.Recognize(settings);
                results[imagePath] = document.GetText();
            }
            finally
            {
                document.Dispose();
            }
        }
    });

    engine.Shutdown();
    return results;
}

// OmniPage: Shared engine with locking to serialize document operations
public ConcurrentDictionary<string, string> ProcessBatchWithEngine(
    string[] imagePaths, string licensePath)
{
    var results = new ConcurrentDictionary<string, string>();
    var engineLock = new object();

    // One engine — document operations must be serialized
    using var engine = new OmniPageEngine();
    engine.SetLicenseFile(licensePath);
    engine.Initialize();

    var settings = new RecognitionSettings { Language = "English" };

    Parallel.ForEach(imagePaths, imagePath =>
    {
        lock (engineLock) // Serialize: one recognition at a time
        {
            var document = engine.CreateDocument();
            try
            {
                document.AddPage(imagePath);
                document.Recognize(settings);
                results[imagePath] = document.GetText();
            }
            finally
            {
                document.Dispose();
            }
        }
    });

    engine.Shutdown();
    return results;
}

// IronOCR: One IronTesseract per thread — no locking, genuine parallelism
public ConcurrentDictionary<string, string> ProcessBatchInParallel(string[] imagePaths)
{
    var results = new ConcurrentDictionary<string, string>();

    Parallel.ForEach(imagePaths, imagePath =>
    {
        // Each thread creates its own instance — no shared state, no locks
        var ocr = new IronTesseract();
        using var input = new OcrInput();
        input.LoadImage(imagePath);

        var result = ocr.Read(input);
        results[imagePath] = result.Text;
    });

    return results;
}

// IronOCR: One IronTesseract per thread — no locking, genuine parallelism
public ConcurrentDictionary<string, string> ProcessBatchInParallel(string[] imagePaths)
{
    var results = new ConcurrentDictionary<string, string>();

    Parallel.ForEach(imagePaths, imagePath =>
    {
        // Each thread creates its own instance — no shared state, no locks
        var ocr = new IronTesseract();
        using var input = new OcrInput();
        input.LoadImage(imagePath);

        var result = ocr.Read(input);
        results[imagePath] = result.Text;
    });

    return results;
}

// OmniPage: Searchable PDF requires OutputSettings configuration before save
public void ConvertArchiveToSearchable(string[] scannedPdfPaths, string outputDirectory)
{
    using var engine = new OmniPageEngine();
    engine.SetLicenseFile(licensePath);
    engine.Initialize();

    var recognitionSettings = new RecognitionSettings
    {
        Language = "English",
        AccuracyMode = "Maximum",
        PreserveLayout = true
    };

    var outputSettings = new OutputSettings
    {
        Format = OutputFormat.SearchablePDF,
        Compression = PDFCompression.Standard,
        ImageQuality = 85,
        EmbedFonts = true
    };

    foreach (var pdfPath in scannedPdfPaths)
    {
        var document = engine.OpenPDF(pdfPath);
        document.RecognizeAll(recognitionSettings);

        string outputPath = Path.Combine(
            outputDirectory,
            Path.GetFileNameWithoutExtension(pdfPath) + "_searchable.pdf");

        document.SaveAs(outputPath, outputSettings);
        document.Dispose();
    }

    engine.Shutdown();
}

// OmniPage: Searchable PDF requires OutputSettings configuration before save
public void ConvertArchiveToSearchable(string[] scannedPdfPaths, string outputDirectory)
{
    using var engine = new OmniPageEngine();
    engine.SetLicenseFile(licensePath);
    engine.Initialize();

    var recognitionSettings = new RecognitionSettings
    {
        Language = "English",
        AccuracyMode = "Maximum",
        PreserveLayout = true
    };

    var outputSettings = new OutputSettings
    {
        Format = OutputFormat.SearchablePDF,
        Compression = PDFCompression.Standard,
        ImageQuality = 85,
        EmbedFonts = true
    };

    foreach (var pdfPath in scannedPdfPaths)
    {
        var document = engine.OpenPDF(pdfPath);
        document.RecognizeAll(recognitionSettings);

        string outputPath = Path.Combine(
            outputDirectory,
            Path.GetFileNameWithoutExtension(pdfPath) + "_searchable.pdf");

        document.SaveAs(outputPath, outputSettings);
        document.Dispose();
    }

    engine.Shutdown();
}

// IronOCR: Searchable PDF output is one method call on the result
public void ConvertArchiveToSearchable(string[] scannedPdfPaths, string outputDirectory)
{
    var ocr = new IronTesseract();

    foreach (var pdfPath in scannedPdfPaths)
    {
        using var input = new OcrInput();
        input.LoadPdf(pdfPath); // All pages loaded automatically

        var result = ocr.Read(input);

        string outputPath = Path.Combine(
            outputDirectory,
            Path.GetFileNameWithoutExtension(pdfPath) + "_searchable.pdf");

        result.SaveAsSearchablePdf(outputPath);
        Console.WriteLine($"Processed: {Path.GetFileName(pdfPath)} ({result.Pages.Length} pages)");
    }
}

// IronOCR: Searchable PDF output is one method call on the result
public void ConvertArchiveToSearchable(string[] scannedPdfPaths, string outputDirectory)
{
    var ocr = new IronTesseract();

    foreach (var pdfPath in scannedPdfPaths)
    {
        using var input = new OcrInput();
        input.LoadPdf(pdfPath); // All pages loaded automatically

        var result = ocr.Read(input);

        string outputPath = Path.Combine(
            outputDirectory,
            Path.GetFileNameWithoutExtension(pdfPath) + "_searchable.pdf");

        result.SaveAsSearchablePdf(outputPath);
        Console.WriteLine($"Processed: {Path.GetFileName(pdfPath)} ({result.Pages.Length} pages)");
    }
}

// At application startup — reads IRONOCR_LICENSE_KEY from environment
IronOcr.License.LicenseKey = Environment.GetEnvironmentVariable("IRONOCR_LICENSE_KEY")
    ?? throw new InvalidOperationException("IronOCR license key not configured.");

// At application startup — reads IRONOCR_LICENSE_KEY from environment
IronOcr.License.LicenseKey = Environment.GetEnvironmentVariable("IRONOCR_LICENSE_KEY")
    ?? throw new InvalidOperationException("IronOCR license key not configured.");

// IronOCR: Process crash has no license implications whatsoever
// Start processing immediately after any failure
IronOcr.License.LicenseKey = "YOUR-LICENSE-KEY";
var result = new IronTesseract().Read("document.jpg"); // No seat to check out

// IronOCR: Process crash has no license implications whatsoever
// Start processing immediately after any failure
IronOcr.License.LicenseKey = "YOUR-LICENSE-KEY";
var result = new IronTesseract().Read("document.jpg"); // No seat to check out

FROM mcr.microsoft.com/dotnet/aspnet:8.0
RUN apt-get update && apt-get install -y libgdiplus  # Single Linux dependency
COPY --from=build /app/publish /app
WORKDIR /app
ENTRYPOINT ["dotnet", "YourApp.dll"]

FROM mcr.microsoft.com/dotnet/aspnet:8.0
RUN apt-get update && apt-get install -y libgdiplus  # Single Linux dependency
COPY --from=build /app/publish /app
WORKDIR /app
ENTRYPOINT ["dotnet", "YourApp.dll"]

// Identical startup code on any hardware topology
IronOcr.License.LicenseKey = "YOUR-LICENSE-KEY";
bool valid = IronOcr.License.IsLicensed; // Verify without a network call

// Identical startup code on any hardware topology
IronOcr.License.LicenseKey = "YOUR-LICENSE-KEY";
bool valid = IronOcr.License.IsLicensed; // Verify without a network call

// OmniPage settings object → IronOCR method calls on OcrInput
var ocr = new IronTesseract();
ocr.Language = OcrLanguage.English;              // RecognitionSettings.Language
// ocr.Configuration.TesseractVersion = ...     // Engine version already optimized

using var input = new OcrInput();
input.LoadImage(imagePath);
input.Deskew();                                  // settings.DeskewImage = true
input.DeNoise();                                 // settings.DespeckleLevel = 2
input.Contrast();                                // settings.ContrastEnhancement = true

var result = ocr.Read(input);

// OmniPage settings object → IronOCR method calls on OcrInput
var ocr = new IronTesseract();
ocr.Language = OcrLanguage.English;              // RecognitionSettings.Language
// ocr.Configuration.TesseractVersion = ...     // Engine version already optimized

using var input = new OcrInput();
input.LoadImage(imagePath);
input.Deskew();                                  // settings.DeskewImage = true
input.DeNoise();                                 // settings.DespeckleLevel = 2
input.Contrast();                                // settings.ContrastEnhancement = true

var result = ocr.Read(input);

// Convert OmniPage zone definition to IronOCR CropRectangle
// OmniPage zone: Name="TotalDue" X="490" Y="612" Width="180" Height="28"
// IronOCR equivalent:
var totalDueRegion = new CropRectangle(490, 612, 180, 28);

using var input = new OcrInput();
input.LoadImage(invoicePath, totalDueRegion);
string totalDue = new IronTesseract().Read(input).Text.Trim();

// Convert OmniPage zone definition to IronOCR CropRectangle
// OmniPage zone: Name="TotalDue" X="490" Y="612" Width="180" Height="28"
// IronOCR equivalent:
var totalDueRegion = new CropRectangle(490, 612, 180, 28);

using var input = new OcrInput();
input.LoadImage(invoicePath, totalDueRegion);
string totalDue = new IronTesseract().Read(input).Text.Trim();

# Find all OmniPage namespace references
grep -r "Kofax\|OmniPage\|CSDK" --include="*.cs" --include="*.csproj" .

# Find engine lifecycle calls
grep -r "Initialize\|Shutdown\|SetLicenseFile" --include="*.cs" .

# Find document and zone creation patterns
grep -r "CreateDocument\|AddPage\|FormZone\|RecognitionSettings\|PreprocessingSettings" --include="*.cs" .

# Find output format configuration
grep -r "OutputSettings\|OutputFormat\|SaveAs\|GetText" --include="*.cs" .

# Find license file path references
grep -r "\.lic\|license\.lic\|licensePath" --include="*.cs" --include="*.config" --include="*.json" .

# Find all OmniPage namespace references
grep -r "Kofax\|OmniPage\|CSDK" --include="*.cs" --include="*.csproj" .

# Find engine lifecycle calls
grep -r "Initialize\|Shutdown\|SetLicenseFile" --include="*.cs" .

# Find document and zone creation patterns
grep -r "CreateDocument\|AddPage\|FormZone\|RecognitionSettings\|PreprocessingSettings" --include="*.cs" .

# Find output format configuration
grep -r "OutputSettings\|OutputFormat\|SaveAs\|GetText" --include="*.cs" .

# Find license file path references
grep -r "\.lic\|license\.lic\|licensePath" --include="*.cs" --include="*.config" --include="*.json" .