誤判

Curtis Chau

更新:2026年4月21日

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如何移除誤判？

BARCODE讀取中的誤判可能發生在：當複雜的背景圖案與BARCODE相似，或當雜訊與干擾產生的意外標記被讀取器誤判為有效BARCODE時。可採取以下步驟，從 IronBarcode 的讀取輸出中移除誤判：

指定預期的 BARCODE 格式：設定 IronBarcode 僅讀取您預期的 BARCODE 格式。完整選項清單請參閱此處：BarcodeEncoding。
啟用 RemoveFalsePositive 屬性：在掃描 BARCODE 時，IronBarcode 會於影像中搜尋最可能類似 BARCODE 的"候選"區域，然後嘗試解碼這些區域。將此屬性設定為 true 時，IronBarcode 僅會解碼編碼無誤的區域。預設情況下，RemoveFalsePositive 已設定為 true。

using IronBarCode;

class BarcodeExample
{
    static void Main()
    {
        // Create a BarcodeReaderOptions object with specific parameters.
        BarcodeReaderOptions myOptionsExample = new BarcodeReaderOptions()
        {
            // Expect and return barcode results for only the Code 39 type.
            ExpectBarcodeTypes = IronBarCode.BarcodeEncoding.Code39,

            // Enable removal of false positives by setting to true.
            RemoveFalsePositive = true
        };

        // Read the barcode from the specified image file using the given options.
        var results = BarcodeReader.Read("barcode.png", myOptionsExample);

        // Process the results here, e.g., display them, log them, etc.
    }
}

using IronBarCode;

class BarcodeExample
{
    static void Main()
    {
        // Create a BarcodeReaderOptions object with specific parameters.
        BarcodeReaderOptions myOptionsExample = new BarcodeReaderOptions()
        {
            // Expect and return barcode results for only the Code 39 type.
            ExpectBarcodeTypes = IronBarCode.BarcodeEncoding.Code39,

            // Enable removal of false positives by setting to true.
            RemoveFalsePositive = true
        };

        // Read the barcode from the specified image file using the given options.
        var results = BarcodeReader.Read("barcode.png", myOptionsExample);

        // Process the results here, e.g., display them, log them, etc.
    }
}

Imports IronBarCode

Friend Class BarcodeExample
	Shared Sub Main()
		' Create a BarcodeReaderOptions object with specific parameters.
		Dim myOptionsExample As New BarcodeReaderOptions() With {
			.ExpectBarcodeTypes = IronBarCode.BarcodeEncoding.Code39,
			.RemoveFalsePositive = True
		}

		' Read the barcode from the specified image file using the given options.
		Dim results = BarcodeReader.Read("barcode.png", myOptionsExample)

		' Process the results here, e.g., display them, log them, etc.
	End Sub
End Class

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