RecognitionOptions Property

Summary

Gets or sets the extra recognition options for this zone.

Syntax

C++/CLI

Java

Python

public NativeOcrZoneRecognitionOptions RecognitionOptions { get; set; }

public NativeOcrZoneRecognitionOptions getRecognitionOptions() 
public void setRecognitionOptions(NativeOcrZoneRecognitionOptions value)

public: 
property NativeOcrZoneRecognitionOptions RecognitionOptions { 
   NativeOcrZoneRecognitionOptions get(); 
   void set (    NativeOcrZoneRecognitionOptions ); 
}

RecognitionOptions # get and set (NativeOcrZone)

Property Value

One or more NativeOcrZoneRecognitionOptions enumeration member that indicate the extra recognition options for this zone.

Remarks

The NativeOcrZone.RecognitionOptions property can be used to control how the checking subsystem will check the recognized result for the zone. For more information, refer to NativeOcrZoneRecognitionOptions.

Note: This property is not supported for the LEADTOOLS OCR Module - LEAD Engine.

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Ocr; 
using Leadtools.Forms.Common; 
using Leadtools.Document.Writer; 
using Leadtools.WinForms; 
using Leadtools.Drawing; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
 
public void OcrAutoZoneExample() 
{ 
   // Create an image with some text in it 
   RasterImage image = new RasterImage(RasterMemoryFlags.Conventional, 320, 200, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null, IntPtr.Zero, 0); 
   Rectangle imageRect = new Rectangle(0, 0, image.ImageWidth, image.ImageHeight); 
 
   IntPtr hdc = RasterImagePainter.CreateLeadDC(image); 
   using (Graphics g = Graphics.FromHdc(hdc)) 
   { 
      g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; 
      g.FillRectangle(Brushes.White, imageRect); 
 
      using (Font f = new Font("Arial", 20, FontStyle.Regular)) 
         g.DrawString("Normal line", f, Brushes.Black, 0, 0); 
 
      using (Font f = new Font("Courier New", 20, FontStyle.Regular)) 
         g.DrawString("Monospaced line", f, Brushes.Black, 0, 80); 
   } 
 
   RasterImagePainter.DeleteLeadDC(hdc); 
 
   string zonesFileName = Path.Combine(LEAD_VARS.ImagesDir, "MyZones.xml"); 
 
   // Create an instance of the engine 
   using (IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.LEAD)) 
   { 
      // Start the engine using default parameters 
      ocrEngine.Startup(null, null, null, LEAD_VARS.OcrLEADRuntimeDir); 
 
      // Create an OCR page 
      using (IOcrPage ocrPage = ocrEngine.CreatePage(image, OcrImageSharingMode.AutoDispose)) 
      { 
         // Show the zones, there should be no zones yet 
         ShowZones("Right after the page was created", ocrPage); 
 
         // Perform default AutoZoning on the page 
         ocrPage.AutoZone(null); 
 
         // Show the zones, there should be two zones, one for each line 
         ShowZones("AutoZone with default parameters", ocrPage); 
 
         // Update the first zone manually 
         OcrZone ocrZone = ocrPage.Zones[0]; 
         ocrZone.ZoneType = OcrZoneType.Text; 
         ocrPage.Zones[0] = ocrZone; 
 
         // Show the zones 
         ShowZones("After updating the type of the first zone", ocrPage); 
 
         // Save the zones to a file and then clear them 
         ocrPage.SaveZones(zonesFileName); 
         ocrPage.Zones.Clear(); 
 
         // Show the zones, there should be no zones since we just cleared them 
         ShowZones("After calling save and clear", ocrPage); 
 
         // Re-load the zones 
         ocrPage.LoadZones(zonesFileName); 
         ShowZones("After re-loading the zones", ocrPage); 
      } 
 
      // Shutdown the engine 
      // Note: calling Dispose will also automatically shutdown the engine if it has been started 
      ocrEngine.Shutdown(); 
   } 
} 
 
private void ShowZones(string message, IOcrPage ocrPage) 
{ 
   Console.WriteLine("Zones after {0}:", message); 
   foreach (OcrZone ocrZone in ocrPage.Zones) 
   { 
      int index = ocrPage.Zones.IndexOf(ocrZone); 
      Console.WriteLine("Zone index: {0}", index); 
      Console.WriteLine("  Id                  {0}", ocrZone.Id); 
      Console.WriteLine("  Bounds              {0}", ocrZone.Bounds); 
      Console.WriteLine("  ZoneType            {0}", ocrZone.ZoneType); 
      Console.WriteLine("  CharacterFilters:   {0}", ocrZone.CharacterFilters); 
      Console.WriteLine("----------------------------------"); 
   } 
 
   Console.WriteLine("Hit enter to continue"); 
   //Console.ReadLine(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
   public const string OcrLEADRuntimeDir = @"C:\LEADTOOLS22\Bin\Common\OcrLEADRuntime"; 
}