using IronBarCode;
using IronSoftware.Drawing;
using System.Linq;
// Choose which filters are to be applied (in order);
var filtersToApply = new ImageFilterCollection() {
new SharpenFilter(),
new InvertFilter(),
new ContrastFilter(),
new BrightnessFilter(),
new AdaptiveThresholdFilter(),
new BinaryThresholdFilter()
};
BarcodeReaderOptions myOptionsExample = new BarcodeReaderOptions()
{
// Set chosen filters in BarcodeReaderOptions:
ImageFilters = filtersToApply,
// Other Barcode Reader Options:
Speed = ReadingSpeed.Balanced,
ExpectMultipleBarcodes = true,
};
// And, apply with a Read:
BarcodeResults results = BarcodeReader.Read("screenshot.png", myOptionsExample);
AnyBitmap[] filteredImages = results.FilterImages();
// Export file to disk
for (int i = 0 ; i < filteredImages.Length ; i++)
filteredImages[i].SaveAs($"{i}_barcode.png");
// Or
results.ExportFilterImagesToDisk("filter-result.jpg");
Imports IronBarCode
Imports IronSoftware.Drawing
Imports System.Linq
' Choose which filters are to be applied (in order);
Private filtersToApply = New ImageFilterCollection() From {
New SharpenFilter(),
New InvertFilter(),
New ContrastFilter(),
New BrightnessFilter(),
New AdaptiveThresholdFilter(),
New BinaryThresholdFilter()
}
Private myOptionsExample As New BarcodeReaderOptions() With {
.ImageFilters = filtersToApply,
.Speed = ReadingSpeed.Balanced,
.ExpectMultipleBarcodes = True
}
' And, apply with a Read:
Private results As BarcodeResults = BarcodeReader.Read("screenshot.png", myOptionsExample)
Private filteredImages() As AnyBitmap = results.FilterImages()
' Export file to disk
For i As Integer = 0 To filteredImages.Length - 1
filteredImages(i).SaveAs($"{i}_barcode.png")
Next i
' Or
results.ExportFilterImagesToDisk("filter-result.jpg")
Install-Package BarCode
Imperfect Barcodes and Image Correction
IronBarcode has many filters to choose from that are easily applied in the BarcodeReaderOptions. Select the filters that may improve reading of your image such as Sharpen, Invert (colors), and Contrast. Please keep in mind that the order in which you choose them are the order that they are applied.
Related Docs Links
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