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BarCodeReadPreprocessCommand Class

Summary

Detects the type of the barcode in the image, and binarizes (makes it black and white) the image in preparation for the recognition process.

Syntax

C#
VB
Java
Objective-C
WinRT C#
C++
public class BarCodeReadPreprocessCommand : RasterCommand 
public sealed class BarCodeReadPreprocessCommand : Leadtools.Imageprocessing.Leadtools.ImageProcessing.IRasterCommand   
@interface LTBarCodeReadPreprocessCommand : LTRasterCommand 
public class BarCodeReadPreprocessCommand extends RasterCommand 
function Leadtools.ImageProcessing.Core.BarCodeReadPreprocessCommand() 

Example

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void BarcodeExampleCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"MIXED.tif"), 24, CodecsLoadByteOrder.BgrOrGrayOrRomm, 1, 1); 
 
   BarCodeReadPreprocessCommand command = new BarCodeReadPreprocessCommand(); 
   command.Options = BarCodeReadPreprocessOptions.UseAutoDocumentBinarization; 
   command.Run(image); 
 
 
   MessageBox.Show("Barcode type is:" + command.BarcodeType + "\n" + "Barcode location is: (" + command.BarcodeLocation.Left.ToString() + ", " + command.BarcodeLocation.Top.ToString() + ", " + 
         command.BarcodeLocation.Right.ToString() + ", " + command.BarcodeLocation.Bottom.ToString() + ", "); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
      Leadtools.Examples.Support.SetLicense() 
 
Public Sub BarcodeExampleCommandExample() 
   ' Load an image 
   Dim Codecs As RasterCodecs = New RasterCodecs() 
   Codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim image As RasterImage = Codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "\MIXED.tif")) 
 
   Dim command As BarCodeReadPreprocessCommand = New BarCodeReadPreprocessCommand() 
   command.Options = BarCodeReadPreprocessOptions.UseAutoDocumentBinarization 
   command.Run(image) 
 
   MessageBox.Show("Barcode type is:" & command.BarcodeType & "\n" & "Barcode location is: (" & 
                   command.BarcodeLocation.Left.ToString() & ", " & command.BarcodeLocation.Top.ToString() & 
                   ", " & command.BarcodeLocation.Right.ToString() & ", " & 
                   command.BarcodeLocation.Bottom.ToString() & ", ") 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class 

Requirements

Target Platforms

Help Version 19.0.2017.10.18
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Leadtools.ImageProcessing.Core Assembly