Granularity Property

Summary

Gets or sets a value that indicates the number of scanned lines per column to skip when reading a barcode.

Syntax

Objective-C

C++/CLI

Java

Python

public int Granularity { get; set; }

@property (nonatomic, assign) NSInteger granularity;

public int getGranularity() 
public void setGranularity(int value)

public: 
property int Granularity { 
   int get(); 
   void set (    int ); 
}

Granularity # get and set (OneDBarcodeReadOptions)

Property Value

An Int32 that indicates the number of scanned lines per column to skip when reading a barcode. Must be a value greater to or equal to 1. The default value is 9.

Remarks

A value of 9 means that each tenth line will be scanned when looking for a barcode. Scanning every line will slow the search process while skipping too many lines may skip over the barcode.

Example

Java

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:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.IOException; 
 
import org.junit.*; 
import static org.junit.Assert.assertTrue; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
 
import leadtools.*; 
import leadtools.barcode.*; 
import leadtools.codecs.*; 
 
 
public void oneDBarcodeExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   String imageFileName = combine(LEAD_VARS_IMAGES_DIR, "OneDBarcodes.tif"); 
   BarcodeEngine engine = new BarcodeEngine(); 
 
   // Create the image to write the barcodes to 
   int resolution = 300; 
   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.getWriter(), image, BarcodeSymbology.UPC_A, "01234567890", new LeadRect(10, 100, 400, 200)); 
   writeBarcode(engine.getWriter(), image, BarcodeSymbology.CODE_128, "Code 128", new LeadRect(10, 400, 400, 200)); 
   writeBarcode(engine.getWriter(), image, BarcodeSymbology.CODE_11, "124578", new LeadRect(10, 700, 400, 200)); 
 
   // Save the image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.save(image, imageFileName, RasterImageFormat.CCITT_GROUP4, 1); 
 
   // Now read the barcodes again 
   image = codecs.load(imageFileName); 
 
   // Read the UPC-A barcode 
   readBarcodes(engine.getReader(), image, BarcodeSymbology.UPC_A); 
 
   // Read the Code 128 barcode 
   readBarcodes(engine.getReader(), image, BarcodeSymbology.CODE_128); 
 
   // Read the Code 11 barcode 
   readBarcodes(engine.getReader(), image, BarcodeSymbology.CODE_11); 
 
   assertTrue(true); 
} 
 
// Create the barcode data 
private void writeBarcode(BarcodeWriter writer, RasterImage image, BarcodeSymbology symbology, String value, LeadRect bounds) { 
   BarcodeData barcode = new BarcodeData(symbology, value); 
   barcode.setBounds(bounds); 
 
   // Set the write options 
   OneDBarcodeWriteOptions options = new OneDBarcodeWriteOptions(); 
   options.setTextPosition(BarcodeOutputTextPosition.DEFAULT); 
   options.setUseXModule(false); 
   options.setXModule(30); 
   options.setEnableErrorCheck(false); 
   options.setSetGS1DatabarLinkageBit(false); 
   options.setWriteTruncatedGS1Databar(false); 
   options.setCode128TableEncoding(Code128BarcodeTableEncoding.AUTO); 
   options.setCode11CheckDigitType(Code11BarcodeCheckDigitType.C_DIGIT); 
   options.setMSIModuloType(MSIBarcodeModuloType.MODULO10); 
 
   // Write it 
   System.out.printf("Writing %1s barcode with data: %2s%n", symbology, value); 
   writer.writeBarcode(image, barcode, options); 
} 
 
// Setup read options 
private void readBarcodes(BarcodeReader reader, RasterImage image, BarcodeSymbology symbology) { 
   OneDBarcodeReadOptions options = new OneDBarcodeReadOptions(); 
   options.setSearchDirection(BarcodeSearchDirection.HORIZONTAL); 
   options.setEnableFastMode(true); 
   options.setGranularity(9); 
   options.setMinimumStringLength(3); 
   options.setMaximumStringLength(0); 
   options.setWhiteLinesNumber(3); 
   options.setReturnCheckDigit(BarcodeReturnCheckDigit.DEFAULT); 
   options.setEnableErrorCheck(false); 
   options.setAvoidCorruptedBlocks(false); 
   options.setAllowPartialRead(false); 
   options.setCode11CheckDigitType(Code11BarcodeCheckDigitType.C_DIGIT); 
   options.setMSIModuloType(MSIBarcodeModuloType.MODULO10); 
   options.setCalculateBarWidthReduction(true); 
   options.setCode39Extended(false); 
   options.setEnableDoublePass(false); 
   options.setEnablePreprocessing(false); 
   options.setResizeSmall1D(false); 
 
   System.out.printf("Reading %s barcodes%n", symbology); 
   BarcodeData barcode = reader.readBarcode(image, LeadRect.getEmpty(), symbology, options); 
   if (barcode != null) { 
 
      System.out.printf(" At %1s, data: %2s%n", barcode.getBounds(), barcode.getValue()); 
 
   } else { 
 
      System.out.println(" Not found"); 
 
   } 
} 
 
public static String combine(String path1, String path2) { 
   File file = new File(path1, path2); 
   return file.getPath(); 
}

Requirements

Target Platforms

Reference

OneDBarcodeReadOptions Class

OneDBarcodeReadOptions Members

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Help Version 23.0.2024.2.29

Leadtools.Barcode Assembly

Introduction

Getting Started

Namespaces

Leadtools.Barcode Namespace

Assemblies