BarcodeMicroQRReaderGetBarcodeX4 Method (GdPictureImaging)

In This Topic

Returns the X position (in pixels) of the bottom-left corner of a barcode detected by the BarcodeMicroQRReaderDoScan method. If ROI has been set, this coordinate is relative to the used ROI.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Function BarcodeMicroQRReaderGetBarcodeX4( _
   ByVal BarcodeNo As Integer _
) As Integer

public int BarcodeMicroQRReaderGetBarcodeX4( 
   int BarcodeNo
)

public function BarcodeMicroQRReaderGetBarcodeX4( 
    BarcodeNo: Integer
): Integer;

public function BarcodeMicroQRReaderGetBarcodeX4( 
   BarcodeNo : int
) : int;

public: int BarcodeMicroQRReaderGetBarcodeX4( 
   int BarcodeNo
)

public:
int BarcodeMicroQRReaderGetBarcodeX4( 
   int BarcodeNo
)

Parameters

BarcodeNo: Barcode index. Must be between 1 and BarcodeMicroQRReaderGetBarcodeCount returned value.

Return Value

The barcode X position of the bottom-left corner; relative to the ROI, if any is defined.

Remarks

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

Example

Finding Micro Qr Code 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 Micro QR Codes in the image should be found.
    int expectedBarcodes = 0;
 
    // Perform scanning at best speed, ignoring very damaged barcodes.
    BarcodeQRReaderScanMode mode = BarcodeQRReaderScanMode.BestSpeed;
 
    // Start the Micro Qr Code scanning process and write info into a text file.
    gdpictureImaging.BarcodeMicroQRReaderDoScan(imageID, mode, expectedBarcodes);
 
    using (System.IO.StreamWriter file = new System.IO.StreamWriter("MicroQrCodes.txt"))
    {
        int barcodesFound = gdpictureImaging.BarcodeMicroQRReaderGetBarcodeCount();
 
        for (int i = 1; i <= barcodesFound; i++)
        {
            // Decoded information.
            file.WriteLine("Decoded info = " + gdpictureImaging.BarcodeMicroQRReaderGetBarcodeValue(i));
 
            // The skew angle of the barcode, in degrees.
            file.WriteLine("Skew angle = " + gdpictureImaging.BarcodeMicroQRReaderGetBarcodeSkewAngle(i));
 
            // Confidence in result, in percentage (values from 0 to 100).
            file.WriteLine("Confidence = " + gdpictureImaging.BarcodeMicroQRReaderGetBarcodeConfidence(i));
 
            // The version of a Micro Qr Code, in range 1-4. The higher the version, the larger the barcode is.
            file.WriteLine("Version = " + gdpictureImaging.BarcodeMicroQRReaderGetVersion(i));
 
            // The barcode position, given by the coordinates of the corners.
            file.WriteLine("Position =  Top-Left=["
                + gdpictureImaging.BarcodeMicroQRReaderGetBarcodeX1(i) + ", " + gdpictureImaging.BarcodeMicroQRReaderGetBarcodeY1(i)
                + "] Top-Right=[" + gdpictureImaging.BarcodeMicroQRReaderGetBarcodeX2(i) + ", " + gdpictureImaging.BarcodeMicroQRReaderGetBarcodeY2(i)
                + "] Bottom-Right=[" + gdpictureImaging.BarcodeMicroQRReaderGetBarcodeX3(i) + ", " + gdpictureImaging.BarcodeMicroQRReaderGetBarcodeY3(i)
                + "] Bottom-Left=[" + gdpictureImaging.BarcodeMicroQRReaderGetBarcodeX4(i) + ", " + gdpictureImaging.BarcodeMicroQRReaderGetBarcodeY4(i) + "]");
        }
    }
 
    // Release used resources.
    gdpictureImaging.BarcodeMicroQRReaderClear();
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}

Reference

GdPictureImaging Class
GdPictureImaging Members