MRTDReader Class

Summary

Class for reading MRTDDataElements in an MRTD(Machine Readable Travel Documents) image or MRZ string.

Syntax

Objective-C

C++/CLI

Java

Python

public class MRTDReader

@interface LTMRTDReader : NSObject

public class MRTDReader

public ref class MRTDReader

class MRTDReader:

Remarks

This object can be used to process images or strings.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Forms.Common; 
using Leadtools.Ocr; 
using Leadtools.Forms.Commands; 
 
 
public void TestMRTDReader() 
{ 
   // Initialize the RasterCodecs class 
   RasterCodecs codecs = new RasterCodecs(); 
 
   // Initialize the MRTDReader class 
   MRTDReader mrtdReader = new MRTDReader(); 
 
   // The MRTD image 
   string mrtdPath = Path.Combine(LEAD_VARS.ImagesDir, "MRZ_SAMPLE.jpg"); 
   RasterImage image = codecs.Load(mrtdPath); 
 
   IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.LEAD); 
   ocrEngine.Startup(codecs, null, null, LEAD_VARS.OcrLEADRuntimeDir); 
 
   // Assign Engine to Reader 
   mrtdReader.OcrEngine = ocrEngine; 
 
   // Process Image 
   mrtdReader.ProcessImage(image); 
 
   if (mrtdReader.Errors == MRTDErrors.NoError) 
   { 
      foreach (var value in mrtdReader.Results) 
      { 
         Console.WriteLine(string.Format("Data Element Field: {0}", value.Key.ToString())); 
         Console.WriteLine(string.Format("Data Element Value: {0}", value.Value.ReadableValue)); 
         Console.WriteLine(string.Format("Data Element Code : {0}", value.Value.MrzCharacters)); 
         Console.WriteLine(string.Format("Data Element Valid: {0}", value.Value.IsValid.ToString())); 
         Console.WriteLine("************************************"); 
      } 
   } 
 
   ocrEngine.Shutdown(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
   public const string OcrLEADRuntimeDir = @"C:\LEADTOOLS23\Bin\Common\OcrLEADRuntime"; 
}

 
import java.io.File; 
import java.io.IOException; 
 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.forms.commands.BankCheckMicrFontType; 
import leadtools.forms.commands.BankCheckReader; 
import leadtools.forms.commands.MRTDErrors; 
import leadtools.forms.commands.MRTDReader; 
import leadtools.forms.commands.ProcessListener; 
import leadtools.forms.commands.ProcessState; 
import leadtools.forms.commands.ProgressEvent; 
import leadtools.ocr.OcrEngine; 
import leadtools.ocr.OcrEngineManager; 
import leadtools.ocr.OcrEngineType; 
 
 
public void TestMRTDReader() { 
   RasterCodecs codecs = new RasterCodecs(); 
   MRTDReader mrtdReader = new MRTDReader(); 
 
   // The MRTD image 
   String LEAD_VARS_ImagesDir = "C:\\LEADTOOLS23\\Resources\\Images"; 
   String mrtdPath = combine(LEAD_VARS_ImagesDir, "MRZ_SAMPLE.jpg"); 
   RasterImage image = codecs.load(mrtdPath); 
   String LEAD_VARS_OcrLEADRuntimeDir = "C:\\LEADTOOLS23\\Bin\\Common\\OcrLEADRuntime"; 
   OcrEngine ocrEngine = OcrEngineManager.createEngine(OcrEngineType.LEAD); 
   ocrEngine.startup(codecs, null, null, LEAD_VARS_OcrLEADRuntimeDir); 
   assertTrue("OCR engine not started", ocrEngine.isStarted()); 
 
   // Assign Engine to Reader 
   mrtdReader.setOcrEngine(ocrEngine); 
 
   // Process Image 
   mrtdReader.processImage(image); 
 
   if (mrtdReader.getErrors() == MRTDErrors.NO_ERROR.getValue()) { 
      for (var value : mrtdReader.getResults().values()) { 
         System.out.println(String.format("Data Element Field: %s", value)); 
         System.out.println(String.format("Data Element Value: %s", value.getReadableValue())); 
         System.out.println(String.format("Data Element Code : %s", value.getMrzCharacters())); 
         System.out.println(String.format("Data Element Valid: %s", value.isValid())); 
         System.out.println("************************************"); 
      } 
   } 
 
   ocrEngine.shutdown(); 
}

Requirements

Target Platforms

Reference

MRTDReader Members

Leadtools.Forms.Commands Namespace

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Help Version 23.0.2024.5.23

Leadtools.Forms.Commands Assembly

Introduction

Getting Started

Namespaces

Leadtools.Forms.Commands Namespace

Assemblies