Reference Guide
GdPicture14 Namespace / GdPictureImaging Class / BarcodePDF417ReaderGetBarcodeConfidence Method
Barcode index. Must be between 1 and BarcodePDF417ReaderGetBarcodeCount returned value.
Example





In This Topic
    BarcodePDF417ReaderGetBarcodeConfidence Method (GdPictureImaging)
    In This Topic
    Returns the confidence of a barcode detected by the BarcodePDF417ReaderDoScan method.
    Syntax
    'Declaration
     
    
    Public Function BarcodePDF417ReaderGetBarcodeConfidence( _
       ByVal BarcodeNo As Integer _
    ) As Single
    public float BarcodePDF417ReaderGetBarcodeConfidence( 
       int BarcodeNo
    )
    public function BarcodePDF417ReaderGetBarcodeConfidence( 
        BarcodeNo: Integer
    ): Single; 
    public function BarcodePDF417ReaderGetBarcodeConfidence( 
       BarcodeNo : int
    ) : float;
    public: float BarcodePDF417ReaderGetBarcodeConfidence( 
       int BarcodeNo
    ) 
    public:
    float BarcodePDF417ReaderGetBarcodeConfidence( 
       int BarcodeNo
    ) 

    Parameters

    BarcodeNo
    Barcode index. Must be between 1 and BarcodePDF417ReaderGetBarcodeCount returned value.

    Return Value

    The barcode confidence. In the range [(less trust) 0 - 100 (full trust)]
    Remarks

    This method is used in the "Barcode Recognition" Demo.

    Example
    Finding PDF417 barcodes in an image and writing complete barcodes info into a file.
    using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
    {
        int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg", false);
     
        // Set to 0, so all the PDF417 barcodes in the image should be found.
        int expectedBarcodes = 0;
     
        // Perform scanning at best speed, ignoring very damaged barcodes.
        BarcodePDF417ReaderScanMode mode = BarcodePDF417ReaderScanMode.BestSpeed;
     
        // Start the PDF417 barcode scanning process and write info into a text file.
        gdpictureImaging.BarcodePDF417ReaderDoScan(imageID, mode, expectedBarcodes);
     
        using (System.IO.StreamWriter file = new System.IO.StreamWriter("PDF417.txt"))
        {
            int barcodesFound = gdpictureImaging.BarcodePDF417ReaderGetBarcodeCount();
     
            for (int i = 1; i <= barcodesFound; i++)
            {
                // Decoded information.
                file.WriteLine("Decoded info = " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeValue(i));
     
                // The raw bytes decoded. It was post-processed to find the correct decoded info based on detected Encoding.
                file.WriteLine("Raw bytes = " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeValueRAW(i));
     
                // The number of rows of the barcode.
                file.WriteLine("Rows = " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeRows(i));
     
                // The number of columns of the barcode.
                file.WriteLine("Columns = " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeColumns(i));
     
                // The skew angle of the barcode, in degrees.
                file.WriteLine("Skew angle = " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeSkewAngle(i));
     
                // Confidence in result, in percentage (values from 0 to 100).
                file.WriteLine("Confidence = " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeConfidence(i));
     
                // The barcode position, given by the coordinates of the corners.
                file.WriteLine("Position =  Top-Left=["
                    + gdpictureImaging.BarcodePDF417ReaderGetBarcodeX1(i) + ", " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeY1(i)
                    + "] Top-Right=[" + gdpictureImaging.BarcodePDF417ReaderGetBarcodeX2(i) + ", " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeY2(i)
                    + "] Bottom-Right=[" + gdpictureImaging.BarcodePDF417ReaderGetBarcodeX3(i) + ", " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeY3(i)
                    + "] Bottom-Left=[" + gdpictureImaging.BarcodePDF417ReaderGetBarcodeX4(i) + ", " + gdpictureImaging.BarcodePDF417ReaderGetBarcodeY4(i) + "]");
            }
        }
     
        // Release used resources.
        gdpictureImaging.BarcodePDF417ReaderClear();
        gdpictureImaging.ReleaseGdPictureImage(imageID);
    }
    See Also