How to Read Multiple 1D Barcode Types from a Single Image in .NET

Retail, warehouse, and logistics operations often require scanning several types of barcodes in a single batch—such as shipping labels containing UPC, EAN, and Code 128. Efficient multi-barcode recognition saves time and reduces errors in inventory and checkout workflows.

Quick Start Example

using Aspose.BarCode.BarCodeRecognition;
using System;

class Program
{
  static void Main()
  {
    string imagePath = "multiple_barcodes.png"; // Replace with your file
    using (BarCodeReader reader = new BarCodeReader(imagePath, DecodeType.UPCA, DecodeType.EAN13, DecodeType.Code39, DecodeType.Code128))
    {
      foreach (BarCodeResult result in reader.ReadBarCodes())
        Console.WriteLine($"Type: {result.CodeTypeName}, Value: {result.CodeText}");
    }
  }
} 

Table of Contents

1. Introduction
2. Why Read Multiple 1D Barcodes in One Image?
3. Quick Start Example
4. Prerequisites
5. Step-by-Step Guide
6. Tips for Reliable Multi-Barcode Recognition
7. Supported 1D Symbologies
8. Troubleshooting & Common Issues
9. FAQs
10. Best Practices
11. Conclusion

Introduction

This article demonstrates how to use Aspose.BarCode for .NET to scan and extract multiple 1D barcodes from a single image. The guide covers practical scenarios in retail, logistics, and inventory management where batch barcode recognition boosts efficiency.

Prerequisites

• Visual Studio 2019 or later
• .NET 6.0+ or .NET Framework 4.6.2+
• Aspose.BarCode for .NET (NuGet)
• A sample image with multiple 1D barcodes

PM> Install-Package Aspose.BarCode 

Step-by-Step Guide

1. Install Aspose.BarCode for .NET.
2. Prepare an input image (e.g., a product label or inventory sheet with multiple barcode types).
3. Create a BarCodeReader instance:
4. Process recognition results: For each BarCodeResult, access type, value, region, orientation, and confidence as needed.
5. Handle exceptions for invalid images or unsupported formats.

Tips for Reliable Multi-Barcode Recognition

• Use clear, high-resolution images (minimize glare/shadows).
• Specify only required DecodeTypes for speed and accuracy.
• If false positives, try restricting to 1D barcode types only.
• For dense layouts, crop or specify regions of interest with Rectangle objects.

Supported 1D Symbologies

Aspose.BarCode for .NET can recognize all major 1D barcode types, including:

• UPC-A, UPC-E
• EAN-8, EAN-13, JAN
• Code 39, Code 128, Code 93
• Interleaved 2 of 5, Standard 2 of 5, MSI, ITF-14
• Codabar, Plessey, POSTNET, PLANET, and more

Troubleshooting & Common Issues

• Barcode not detected?

  • Try increasing image quality or adjusting the barcode region.

• Wrong type returned?

  • Specify the exact DecodeTypes required, not AllSupportedTypes.

• Performance slow with many types?

  • Restrict recognition to a specific set of 1D barcode types.

FAQs

Q: Can I read both 1D and 2D barcodes together? A: Yes, add desired 2D types to the DecodeType list as needed.

Q: Can I scan from streams or bitmaps? A: Yes, BarCodeReader supports streams, bitmaps, and file paths.

Best Practices

Conclusion

Multi-barcode recognition is essential for modern inventory, shipping, and retail systems. Aspose.BarCode for .NET makes it easy to scan and decode multiple 1D barcodes from a single image, boosting speed and reducing manual work. For advanced features, see the Aspose.BarCode API Reference .