Imperfect Barcodes and Image Correction

VB C#

using IronBarCode;
using IronSoftware.Drawing;

// Choose which filters are to be applied (in order)
// Set cacheAtEachIteration = true to save the intermediate image data after each filter is applied
var filtersToApply = new ImageFilterCollection(cacheAtEachIteration: true) {
    new SharpenFilter(),
    new InvertFilter(),
    new ContrastFilter(),
    new BrightnessFilter(),
    new AdaptiveThresholdFilter(),
    new BinaryThresholdFilter(),
    new GaussianBlurFilter(),
    new MedianBlurFilter(),
    new BilateralFilter()
};

BarcodeReaderOptions myOptionsExample = new BarcodeReaderOptions()
{
    // Set chosen filters in BarcodeReaderOptions
    ImageFilters = filtersToApply,

    Speed = ReadingSpeed.Balanced,
    ExpectMultipleBarcodes = true,
};

// Read with the options applied
BarcodeResults results = BarcodeReader.Read("screenshot.png", myOptionsExample);

AnyBitmap[] filteredImages = results.FilterImages();

// Export intermediate image files to disk
for (int i = 0 ; i < filteredImages.Length ; i++)
    filteredImages[i].SaveAs($"{i}_barcode.png");

// Or
results.ExportFilterImagesToDisk("filter-result.jpg");

Imports IronBarCode
Imports IronSoftware.Drawing

' Choose which filters are to be applied (in order)
' Set cacheAtEachIteration = true to save the intermediate image data after each filter is applied
Private filtersToApply = New ImageFilterCollection(cacheAtEachIteration:= True) From {
	New SharpenFilter(),
	New InvertFilter(),
	New ContrastFilter(),
	New BrightnessFilter(),
	New AdaptiveThresholdFilter(),
	New BinaryThresholdFilter(),
	New GaussianBlurFilter(),
	New MedianBlurFilter(),
	New BilateralFilter()
}

Private myOptionsExample As New BarcodeReaderOptions() With {
	.ImageFilters = filtersToApply,
	.Speed = ReadingSpeed.Balanced,
	.ExpectMultipleBarcodes = True
}

' Read with the options applied
Private results As BarcodeResults = BarcodeReader.Read("screenshot.png", myOptionsExample)

Private filteredImages() As AnyBitmap = results.FilterImages()

' Export intermediate image files to disk
For i As Integer = 0 To filteredImages.Length - 1
	filteredImages(i).SaveAs($"{i}_barcode.png")
Next i

' Or
results.ExportFilterImagesToDisk("filter-result.jpg")

Install-Package BarCode

Imperfect Barcodes and Image Correction

IronBarcode offers many image pre-processing filters to choose from that are easily applied within BarcodeReaderOptions. Select the filters that may improve reading of your image such as Sharpen, Binary Threshold, and Contrast. Please keep in mind that the order in which you choose them is the order that they are applied.

There is the option of saving the image data of the intermediate images with each filter applied. This can be toggled with the SaveAtEachIteration property of ImageFilterCollection.

using IronBarCode; // Import IronBarcode library

public class BarcodeProcessor
{
    public static void Main()
    {
        // Create a BarcodeReaderOptions instance
        BarcodeReaderOptions options = new BarcodeReaderOptions();

        // Add filters to the options
        options.Filters.Add(new ImageFilter { FilterType = ImageFilterType.Sharpen });
        options.Filters.Add(new ImageFilter { FilterType = ImageFilterType.BinaryThreshold });
        options.Filters.Add(new ImageFilter { FilterType = ImageFilterType.Contrast });

        // Enable saving of intermediate images for each filter applied
        options.Filters.SaveAtEachIteration = true;

        // Read a barcode from an image file using the options
        var result = BarcodeReader.ReadBarcodesFromFile("path/to/your/barcode/image.jpg", options);

        // Display the barcode data
        foreach (var barcode in result)
        {
            Console.WriteLine($"Type: {barcode.BarcodeType} - Value: {barcode.Text}");
        }
    }
}

using IronBarCode; // Import IronBarcode library

public class BarcodeProcessor
{
    public static void Main()
    {
        // Create a BarcodeReaderOptions instance
        BarcodeReaderOptions options = new BarcodeReaderOptions();

        // Add filters to the options
        options.Filters.Add(new ImageFilter { FilterType = ImageFilterType.Sharpen });
        options.Filters.Add(new ImageFilter { FilterType = ImageFilterType.BinaryThreshold });
        options.Filters.Add(new ImageFilter { FilterType = ImageFilterType.Contrast });

        // Enable saving of intermediate images for each filter applied
        options.Filters.SaveAtEachIteration = true;

        // Read a barcode from an image file using the options
        var result = BarcodeReader.ReadBarcodesFromFile("path/to/your/barcode/image.jpg", options);

        // Display the barcode data
        foreach (var barcode in result)
        {
            Console.WriteLine($"Type: {barcode.BarcodeType} - Value: {barcode.Text}");
        }
    }
}

IRON VB CONVERTER ERROR developers@ironsoftware.com

$vbLabelText $csharpLabel

In this C# example, we use the IronBarcode library to read a barcode from an image file.
We create an instance of BarcodeReaderOptions and configure it with various image filters: Sharpen, Binary Threshold, and Contrast.
The filters are added in a specific order, indicating the sequence in which they should be applied.
By setting SaveAtEachIteration to true, the library saves intermediate images after each filter application, which is useful for debugging and analysis.
Finally, we read the barcode from the image and print the barcode type and value to the console.