不完美條碼與圖像校正

VBC#

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
Dim filtersToApply As New ImageFilterCollection(cacheAtEachIteration:=True) From {
    New SharpenFilter(),
    New InvertFilter(),
    New ContrastFilter(),
    New BrightnessFilter(),
    New AdaptiveThresholdFilter(),
    New BinaryThresholdFilter(),
    New GaussianBlurFilter(),
    New MedianBlurFilter(),
    New BilateralFilter()
}

Dim myOptionsExample As New BarcodeReaderOptions() With {
    .ImageFilters = filtersToApply,

    .Speed = ReadingSpeed.Balanced,
    .ExpectMultipleBarcodes = True
}

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

Dim 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

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

PM > Install-Package BarCode

Install-Package BarCode

不完美條碼與圖像校正

IronBarcode 提供許多影像預處理過濾器可供選擇，並且可以輕鬆地應用在 BarcodeReaderOptions。選擇可以改善影像讀取的過濾器，例如 Sharpen、二值化閾值 和 Contrast。請記得您選擇的順序就是他們應用的順序。

有選項可以將應用每個過濾器的中間影像資料儲存下來。可以使用 SaveAtEachIteration 屬性來切換 ImageFilterCollection。

範例程式碼中的重點:

我們建立了一個 BarcodeReaderOptions 的實例，並使用各種影像過濾器進行配置：Binary Threshold 和 Contrast。
過濾器以特定順序新增，表示應用的順序。
通過將 cacheAtEachIteration 設置為 true，程式庫會在每次應用過濾器後儲存中間的影像，這對於除錯和分析很有用。
最後，我們從影像中讀取條碼，並將條碼型別和值輸出至控制台。

進一步瞭解 IronBarcode 中的影像校正

在 GitHub 上查看