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MRZCodeDetectionCommand Class


Automatically detects a machine-readable passport (MRZ) zone in a document image.

  • This command searches inside a given LeadRect zone (set using SearchingZone property) and detects an MRZ code.
  • Users can get the detected zone by calling the MRZZone property.

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing 
Imports Leadtools.ImageProcessing.Core 
Public Sub MRZCodeDetectionCommandExample() 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
   'Load an image 
   Dim MRZImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "MRZ_SAMPLE.jpg")) 
   'Detect MRZ zone 
   Dim command As MRZCodeDetectionCommand = New MRZCodeDetectionCommand() 
   Dim mrzzone As LeadRect = command.MRZZone 
   ' Set MRZ zone to image region 
   Dim rgn As RasterRegion = New RasterRegion() 
   rgn.Combine(mrzzone, RasterRegionCombineMode.Set) 
   MRZImage.SetRegion(Nothing, rgn, RasterRegionCombineMode.Set) 
End Sub 
Public NotInheritable Class LEAD_VARS 
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Core; 
public void MRZCodeDetectionCommandExample() 
    RasterCodecs codecs = new RasterCodecs(); 
    codecs.ThrowExceptionsOnInvalidImages = true ; 
    //Load an image 
    RasterImage MRZImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "MRZ_SAMPLE.jpg")); 
    //Detect MRZ zone 
    MRZCodeDetectionCommand command = new MRZCodeDetectionCommand(); 
    LeadRect mrzzone = command.MRZZone ; 
    // Set MRZ zone to image region 
    RasterRegion rgn = new RasterRegion(); 
    rgn.Combine(mrzzone, RasterRegionCombineMode.Set); 
    MRZImage.SetRegion(null, rgn, RasterRegionCombineMode.Set); 
static class LEAD_VARS 
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 


Target Platforms

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Leadtools.ImageProcessing.Core Assembly
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