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VB.NET Imaging - Data Matrix Reading Guide

How to Read and Decode Data Matrix on Image on Document with VB Code

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VB Image Data Matrix Reading Overview
With RasterEdge .NET Imaging Barcode Reader in VB.NET application, developers and end users can simply utilize 2d Data Matrix reading controls with your safe threaded VB imaging project to read and scan Data Matrix barcode from image and document forms, including some scanned document files.
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The specific image and document forms that Data Matrix barcode can be read from are: raster PNG, GIF, BMP, JPEG, and TIFF, PDF, Word, and even medical DICOM. Using this VB.NET Imaging Barcode Reading Add-on, users are capable of reading and scanning any linear or 2d barcode of any quality at any orientation. And no matter the image is colorful or bitonal (black and white), you can run this VB.NET image barcode reading toolkit in high performance.
In this page, user can learn following information for reading Data Matrix on image and document in VB class:
  • Specific feature and benefit list of reading and decoding Data Matrix barcode from image and document page within VB.NET image application
  • How to decode and recognize Data Matrix from raster images in VB methods
  • How to detect and scan 2D Data Matrix barcode from PDF and Word document page by using VB sample code
This page is on the 2D Data Matrix reading tutorial in VB, if you want to see the guide on how to create and generate Data Matrix barcode on VB image and document, please link to have a read.
VB.NET Image Data Matrix Reading Features and Benefits
  • Incorporate advanced VB Imaging Data Matrix Reader Add-on within .NET Imaging Processing SDK
  • Quickly and precisely read Data Matrix from original and scanned image and document files
  • Free to decode and scan Data Matrix barcode on raster image only with a few lines of code in VB project
  • Accurately recognize Data Matrix barcode at any orientation with 360 degrees from image page
  • VB image fully barcode configurable recognition engine to intelligently recognize Data Matrix foreground and background color
  • High performance image barcode reading technique to easily scan even damaged Data Matrix barcode
  • Comprehensive barcode reading APIs for decoding multiple barcodes form single image or document page at the same time in VB project
  • Able to read multiple Data Matrix barcodes that are located on different PDF or Word document pages
  • Support more linear and 2D barcodes reading functions in VB Windows application
How to Read Data Matrix from Image Forms in VB Program
At this part, users can get the detailed information on how to read and scan Data Matrix barcode from raster image forms. Following sample code in VB class is for reading Data Matrix from multi-page tiff image, and other readable images are jpeg, png, bmp and gif.
Public Shared FolderName As String = "c:/"

Private Sub button1_Click(sender As Object, e As EventArgs)
Dim fileName As String = FolderName & "SampleBarcode.tif"

Dim datas As String() = BarcodeScanner.Scan(fileName, BarcodeType.DataMatrix)

For Each data As String In datas
Debug.WriteLine(data)
Next
End Sub
How to Decode Data Matrix on Certain PDF Page in VB Program
Except for image formats, our powerful and robust Data Matrix Reading component also can be applied to read and recognize Data Matrix from PDF document within VB Windows application. What's more, with the document page handling solutions of .NET Imaging Processing SDK, users can define the specific location of barcode page to fast scan Data Matrix.
Also,we provide users the great abilities to read several Data Matrix barcodes from single PDF page or decode multiple Data Matrix barcodes from multiple PDF pages.
Public Shared FolderName As String = "c:/"
Private Sub button1_Click(sender As Object, e As EventArgs)
Dim fileName As String = FolderName & "Sample.pdf"

Dim reImage As REImage = DirectCast(REFile.OpenDocumentFile(fileName, New PDFDecoder()).GetPage(0).ToImage(), REImage)

Dim datas As String() = BarcodeScanner.Scan(reImage, BarcodeType.DataMatrix)

For Each data As String In datas
Debug.WriteLine(data)
Next
End Sub
How to Scan Data Matrix on Certain Word Page Area in VB Program
Above part shows the complete information on reading Data Matrix from certain PDF document page, and this section is aimed to help users to decode and scan Data Matrix on a specific area of Word page by defining the barcode location X and Y parameters in VB program.
Public Shared FolderName As String = "c:/"
Private Sub button1_Click(sender As Object, e As EventArgs)
Dim fileName As String = FolderName & "Sample.docx"

Dim reImage As REImage = DirectCast(REFile.OpenDocumentFile(fileName, New DOCXDecoder()).GetPage(0).ToImage(), REImage)

Dim datas As String() = BarcodeScanner.Scan(reImage, BarcodeType.DataMatrix)

For Each data As String In datas
Debug.WriteLine(data)
Next
End Sub


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