EnableSmallSymbols Property

Summary

Gets or sets a value that indicate whether to detect small DataMatrix symbols that are 20 to 40 pixels in size.

Syntax

Objective-C

C++/CLI

Java

Python

public bool EnableSmallSymbols { get; set; }

@property (nonatomic, assign) BOOL enableSmallSymbols;

public boolean getEnableSmallSymbols() 
public void setEnableSmallSymbols(boolean value)

public: 
property bool EnableSmallSymbols { 
   bool get(); 
   void set (    bool ); 
}

EnableSmallSymbols # get and set (DatamatrixBarcodeReadOptions)

Property Value

true to detect small DataMatrix symbols that are 20 to 40 pixels in size. Otherwise, false. The default value is true.

Remarks

Set EnableSmallSymbols to false to increase barcode detection speed if you are certain you do not need to detect very small DataMatrix symbols that are 20 to 40 pixels in size.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Barcode; 
using Leadtools.ImageProcessing; 
 
 
public void DatamatrixBarcode_Example() 
{ 
   string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "MyDatamatrixBarcodes.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 two Datamatrix barcodes, a square and a rectangle one 
      WriteBarcode(engine.Writer, image, DatamatrixBarcodeSymbolSize.Size16X36, "Datamatrix1 16x36", false); 
      WriteBarcode(engine.Writer, image, DatamatrixBarcodeSymbolSize.Size132X132, "Datamatrix2 132x132", true); 
 
      // 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 only square symbols, should only read the first barcode 
         ReadBarcodes(engine.Reader, image, true); 
 
         // Read all symbols, should read both barcodes 
         ReadBarcodes(engine.Reader, image, false); 
      } 
   } 
} 
 
private void WriteBarcode(BarcodeWriter writer, RasterImage image, DatamatrixBarcodeSymbolSize symbolSize, string value, bool topLeft) 
{ 
   // Create the barcode data 
   DatamatrixBarcodeData barcode = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.Datamatrix) as DatamatrixBarcodeData; 
   barcode.SymbolSize = symbolSize; 
   barcode.Value = value; 
   barcode.Symbology= BarcodeSymbology.Datamatrix; 
 
   // We will use the alignment to position the barcodes, so use all of the image 
   barcode.Bounds = new LeadRect(0, 0, image.ImageWidth, image.ImageHeight); 
 
   // Set the write options 
   DatamatrixBarcodeWriteOptions options = new DatamatrixBarcodeWriteOptions(); 
 
   if (topLeft) 
   { 
      options.HorizontalAlignment = BarcodeAlignment.Near; 
      options.VerticalAlignment = BarcodeAlignment.Near; 
   } 
   else 
   { 
      options.HorizontalAlignment = BarcodeAlignment.Far; 
      options.VerticalAlignment = BarcodeAlignment.Far; 
   } 
 
   options.DisableCompression = false; 
   options.GroupNumber = 0; 
   options.GroupTotal = 0; 
   options.FileIdNumberLowByte = 1; 
   options.FileIdNumberHighByte = 1; 
   options.XModule = 30; 
   options.HRItoGS1 = false; 
 
   // Write it 
   Console.WriteLine("Writing barcode with symbol size: {0} and Data: {1}", symbolSize, value); 
   writer.WriteBarcode(image, barcode, options); 
} 
 
private void ReadBarcodes(BarcodeReader reader, RasterImage image, bool squareOnly) 
{ 
   // Setup read options 
   DatamatrixBarcodeReadOptions options = new DatamatrixBarcodeReadOptions(); 
   options.ReadSquareSymbolsOnly = squareOnly; 
   options.EnableDoublePass = false; 
   options.EnableDoublePassIfSuccess = false; 
   options.EnableInvertedSymbols = false; 
   options.EnableFastMode = true; 
   options.EnableSmallSymbols = true; 
   options.EnablePreprocessing = true; 
   options.GS1toHRI = false; 
 
   Console.WriteLine("Reading Datamatrix barcodes with ReadSquareSymbolsOnly set to {0}", squareOnly); 
   BarcodeData[] barcodes = reader.ReadBarcodes(image, LeadRect.Empty, 0, new BarcodeSymbology[] { BarcodeSymbology.Datamatrix }, new BarcodeReadOptions[] { options }); 
   Console.WriteLine("{0} barcodes found:", barcodes.Length); 
   foreach (DatamatrixBarcodeData barcode in barcodes) 
   { 
      Console.WriteLine(" At {0}, symbol size: {1} data: {2} and symbology: {3}", barcode.Bounds, barcode.SymbolSize, barcode.Value, barcode.Symbology); 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.IOException; 
 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.barcode.*; 
import leadtools.codecs.*; 
 
 
public void datamatrixBarcodeExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   String imageFileName = combine(LEAD_VARS_IMAGES_DIR, "MyDatamatrixBarcodes.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 two Datamatrix barcodes, a square and a rectangle one 
   writeBarcode(engine.getWriter(), image, DatamatrixBarcodeSymbolSize.SIZE16X36, "Datamatrix1 16x36", false); 
   writeBarcode(engine.getWriter(), image, DatamatrixBarcodeSymbolSize.SIZE132X132, "Datamatrix2 132x132", true); 
 
   // 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 only square symbols, should only read the first barcode 
   readBarcodes(engine.getReader(), image, true); 
 
   // Read all symbols, should read both barcodes 
   readBarcodes(engine.getReader(), image, false); 
 
   // cleanup 
   image.dispose(); 
   codecs.dispose(); 
} 
 
// Create the barcode data 
private void writeBarcode(BarcodeWriter writer, RasterImage image, DatamatrixBarcodeSymbolSize symbolSize, String value, boolean topLeft) { 
   DatamatrixBarcodeData barcode = (DatamatrixBarcodeData) BarcodeData.createDefaultBarcodeData(BarcodeSymbology.DATAMATRIX); 
   barcode.setSymbolSize(symbolSize); 
   barcode.setValue(value); 
   barcode.setSymbology(BarcodeSymbology.DATAMATRIX); 
 
   // We will use the alignment to position the barcodes, so use all of the image 
   barcode.setBounds(new LeadRect(0, 0, image.getImageWidth(), image.getImageHeight())); 
 
   // Set the write options 
   DatamatrixBarcodeWriteOptions options = new DatamatrixBarcodeWriteOptions(); 
 
   if (topLeft) { 
 
      options.setHorizontalAlignment(BarcodeAlignment.NEAR); 
      options.setVerticalAlignment(BarcodeAlignment.NEAR); 
 
   } else { 
 
      options.setHorizontalAlignment(BarcodeAlignment.FAR); 
      options.setVerticalAlignment(BarcodeAlignment.FAR); 
 
   } 
 
   options.setDisableCompression(false); 
   options.setGroupNumber(0); 
   options.setGroupTotal(0); 
   options.setFileIdNumberLowByte((byte) 1); 
   options.setFileIdNumberHighByte((byte) 1); 
   options.setXModule(30); 
   options.setHRItoGS1(false); 
 
   // Write it 
   System.out.printf("Writing barcode with symbol size: %1s and Data: %2s%n", symbolSize, value); 
   writer.writeBarcode(image, barcode, options); 
} 
 
// Setup read options 
private void readBarcodes(BarcodeReader reader, RasterImage image, boolean squareOnly) { 
   DatamatrixBarcodeReadOptions options = new DatamatrixBarcodeReadOptions(); 
   options.setReadSquareSymbolsOnly(squareOnly); 
   options.setEnableDoublePass(false); 
   options.setEnableDoublePassIfSuccess(false); 
   options.setEnableInvertedSymbols(false); 
   options.setEnableFastMode(true); 
   options.setEnableSmallSymbols(true); 
   options.setEnablePreprocessing(true); 
   options.setGS1toHRI(false); 
 
   System.out.printf("Reading Datamatrix barcodes with ReadSquareSymbolsOnly set to %1s%n", squareOnly); 
   BarcodeData[] barcodes = reader.readBarcodes(image, LeadRect.getEmpty(), 0, 
         new BarcodeSymbology[] { BarcodeSymbology.DATAMATRIX }, new BarcodeReadOptions[] { options }); 
   System.out.printf("%s barcodes found:%n", barcodes.length); 
 
   for (BarcodeData barcode : barcodes) { 
 
      System.out.printf(" At %1s, symbol size: %2s data: %3s and symbology: %4s", barcode.getBounds(), 
            barcode.getData(), barcode.getValue(), barcode.getSymbology()); 
 
   } 
}

Requirements

Target Platforms

Reference

DatamatrixBarcodeReadOptions Class

DatamatrixBarcodeReadOptions Members

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Help Version 23.0.2024.2.29

Leadtools.Barcode Assembly

Introduction

Getting Started

Namespaces

Leadtools.Barcode Namespace

Assemblies