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OneDBarcodeReadOptions Class

Summary
Contains the extra options to use when reading standard 1D (linear) barcodes.
Syntax
C#
Objective-C
C++/CLI
Java
Python
[SerializableAttribute()] 
public class OneDBarcodeReadOptions : BarcodeReadOptions 
@interface LTOneDBarcodeReadOptions : LTBarcodeReadOptions 
public class OneDBarcodeReadOptions extends BarcodeReadOptions 
[TypeConverterAttribute()] 
[SerializableAttribute()] 
public ref class OneDBarcodeReadOptions : public BarcodeReadOptions, System.ICloneable   
class OneDBarcodeReadOptions(BarcodeReadOptions): 
Remarks

The OneDBarcodeReadOptions class is used to control the options when reading standard 1D (linear) barcodes using LEADTOOLS. Set the options in two ways:

The BarcodeReader class contains default options for each barcode symbology (or group of common symbologies). These options can be retrieved using the BarcodeReader.GetDefaultOptions method passing one of the following:

Change the members of the returned OneDBarcodeReadOptions by casting it from BarcodeReadOptions to OneDBarcodeReadOptions.

You can also create an instance of the OneDBarcodeReadOptions class and use it directly in the BarcodeReader.ReadBarcode and BarcodeReader.ReadBarcodes methods that accept a single array of options as an input parameter.

The base BarcodeReadOptions contains the following members and features:

Member Description
BarcodeReadOptions.ForeColor

Controls the barcode foreground color (color of the bars or symbols) to use when reading a barcode from a colored image.

BarcodeReadOptions.BackColor

Controls the barcode background color (color of the spaces) to use when reading a barcode from a colored image.

BarcodeReadOptions.Load and BarcodeReadOptions.Save

Can be used to save or load the options to/from an XML file or stream.

BarcodeReadOptions.GetSupportedSymbologies

This class overrides the base class method to return an array containing the following symbologies: BarcodeSymbology.EAN13, BarcodeSymbology.EAN8, BarcodeSymbology.UPCA, BarcodeSymbology.UPCE, BarcodeSymbology.Code3Of9, BarcodeSymbology.Code128, BarcodeSymbology.CodeInterleaved2Of5, BarcodeSymbology.Codabar, BarcodeSymbology.UCCEAN128, BarcodeSymbology.Code93, BarcodeSymbology.EANEXT5, BarcodeSymbology.EANEXT2, BarcodeSymbology.MSI, BarcodeSymbology.Code11, BarcodeSymbology.CodeStandard2Of5, BarcodeSymbology.GS1Databar, BarcodeSymbology.GS1DatabarLimited and BarcodeSymbology.GS1DatabarExpanded

In addition to the features and members, OneDBarcodeReadOptions contains these standard 1D (linear) barcodes specific features:

Member Description
SearchDirection

The direction to use when searching for barcodes (horizontal, vertical or both)

EnableFastMode

Fast barcode reading (recommended). It is suitable for most barcode qualities either good or poor

Granularity

The number of scanned lines per column to skip when reading a barcode

MinimumStringLength

The minimum string length to use when searching for a non-fixed length barcode.

MaximumStringLength

The maximum string length to use when searching for a non-fixed length barcode.

WhiteLinesNumber

The minimum number of lines of white space above and below the barcode symbol.

EnableDoublePass

Enable internal auto pre-processing of the image data if no barcode was found.

EnablePreprocessing

Enable applying auto segmentation and deep auto pre-processing to the image then re-scanning if no barcodes of this symbology are found.

ReturnCheckDigit

The error check digit is returned as part of the barcode data

EnableErrorCheck

The optional check word is used for validity check when reading a barcode (if supported).

AvoidCorruptedBlocks

Avoids corrupted blocks when reading barcodes.

AllowPartialRead

Allows returning partially read barcodes.

ResizeSmall1D

Enhance the bars for the small module width symbols.

Code11CheckDigitType

Checks digit type to use when reading Code 11 (USD-8) barcodes.

MSIModuloType

Checks digit type to use when reading MSI (Pulse Width Modulated) barcodes.

Code39Extended

Allows decoding extended characters when reading Code 3 of 9 symbols.

CalculateBarWidthReduction

Allows calculating the bar width reduction value.

Example

This example shows how to use the OneDBarcodeReadOptions options class to read UPC barcodes from an image.

C#
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Barcode; 
using Leadtools.ImageProcessing; 
 
 
public void OneDBarcode_Example() 
{ 
   string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "MyOneDBarcodes.tif"); 
 
   BarcodeEngine engine = new BarcodeEngine(); 
 
   // Create the image to write the barcodes to 
   int resolution = 300; 
   using (RasterImage image = RasterImage.Create((int)(8.5 * resolution), (int)(11.0 * resolution), 1, resolution, RasterColor.FromKnownColor(RasterKnownColor.White))) 
   { 
      // Write a POSTNET and a PLANET barcodes 
      WriteBarcode(engine.Writer, image, BarcodeSymbology.UPCA, "01234567890", new LeadRect(10, 100, 400, 200)); 
      WriteBarcode(engine.Writer, image, BarcodeSymbology.Code128, "Code 128", new LeadRect(10, 400, 400, 200)); 
      WriteBarcode(engine.Writer, image, BarcodeSymbology.Code11, "124578", new LeadRect(10, 700, 400, 200)); 
 
      // Save the image 
      using (RasterCodecs codecs = new RasterCodecs()) 
      { 
         codecs.Save(image, imageFileName, RasterImageFormat.CcittGroup4, 1); 
      } 
   } 
 
   // Now read the barcodes again 
   using (RasterCodecs codecs = new RasterCodecs()) 
   { 
      using (RasterImage image = codecs.Load(imageFileName)) 
      { 
         // Read the UPC-A barcode 
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.UPCA); 
 
         // Read the Code 128 barcode 
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.Code128); 
 
         // Read the Code 11 barcode 
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.Code11); 
      } 
   } 
} 
 
private void WriteBarcode(BarcodeWriter writer, RasterImage image, BarcodeSymbology symbology, string value, LeadRect bounds) 
{ 
   // Create the barcode data 
   BarcodeData barcode = new BarcodeData(symbology, value); 
   barcode.Bounds = bounds; 
 
   // Set the write options 
   OneDBarcodeWriteOptions options = new OneDBarcodeWriteOptions(); 
   options.TextPosition = BarcodeOutputTextPosition.Default; 
   options.UseXModule = false; 
   options.XModule = 30; 
   options.EnableErrorCheck = false; 
   options.SetGS1DatabarLinkageBit = false; 
   options.WriteTruncatedGS1Databar = false; 
   options.Code128TableEncoding = Code128BarcodeTableEncoding.Auto; 
   options.Code11CheckDigitType = Code11BarcodeCheckDigitType.CDigit; 
   options.MSIModuloType = MSIBarcodeModuloType.Modulo10; 
 
   // Write it 
   Console.WriteLine("Writing {0} barcode with data: {1}", symbology, value); 
   writer.WriteBarcode(image, barcode, options); 
} 
 
private void ReadBarcodes(BarcodeReader reader, RasterImage image, BarcodeSymbology symbology) 
{ 
   // Setup read options 
   OneDBarcodeReadOptions options = new OneDBarcodeReadOptions(); 
   options.SearchDirection = BarcodeSearchDirection.Horizontal; 
   options.EnableFastMode = true; 
   options.Granularity = 9; 
   options.MinimumStringLength = 3; 
   options.MaximumStringLength = 0; 
   options.WhiteLinesNumber = 3; 
   options.ReturnCheckDigit = BarcodeReturnCheckDigit.Default; 
   options.EnableErrorCheck = false; 
   options.AvoidCorruptedBlocks = false; 
   options.AllowPartialRead = false; 
   options.Code11CheckDigitType = Code11BarcodeCheckDigitType.CDigit; 
   options.MSIModuloType = MSIBarcodeModuloType.Modulo10; 
   options.CalculateBarWidthReduction = true; 
   options.Code39Extended = false; 
   options.EnableDoublePass = false; 
   options.EnablePreprocessing = false; 
   options.ResizeSmall1D = false; 
 
   Console.WriteLine("Reading {0} barcodes", symbology); 
   BarcodeData barcode = reader.ReadBarcode(image, LeadRect.Empty, symbology, options); 
   if (barcode != null) 
   { 
      Console.WriteLine(" At {0}, data: {1}", barcode.Bounds, barcode.Value); 
   } 
   else 
   { 
      Console.WriteLine(" Not found"); 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
} 
Requirements

Target Platforms

Help Version 22.0.2023.5.9
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© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.Barcode Assembly
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.