BarcodeAztecReaderGetBarcodeY4 Method (GdPictureImaging)

In This Topic

Returns the Y position (in pixels) of the bottom-left corner of a barcode detected by the BarcodeAztecReaderDoScan 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 BarcodeAztecReaderGetBarcodeY4( _
   ByVal BarcodeNo As Integer _
) As Integer

public int BarcodeAztecReaderGetBarcodeY4( 
   int BarcodeNo
)

public function BarcodeAztecReaderGetBarcodeY4( 
    BarcodeNo: Integer
): Integer;

public function BarcodeAztecReaderGetBarcodeY4( 
   BarcodeNo : int
) : int;

public: int BarcodeAztecReaderGetBarcodeY4( 
   int BarcodeNo
)

public:
int BarcodeAztecReaderGetBarcodeY4( 
   int BarcodeNo
)

Parameters

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

Return Value

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

Remarks

Use the GetStat() method to determine if this method has been successful.

Example

Finding Aztec barcodes in an image and writing complete barcodes info in a file.

using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg", false);
 
    // Set to 0, so all the Aztec barcodes in the image should be found.
    int expectedBarcodes = 0;
 
    // Perform scanning at best speed, ignoring very damaged barcodes.
    BarcodeAztecReaderScanMode mode = BarcodeAztecReaderScanMode.BestSpeed;
 
    // Start the Aztec barcode scanning process and write info into a text file.
    gdpictureImaging.BarcodeAztecReaderDoScan(imageID, mode, expectedBarcodes);
 
    using (System.IO.StreamWriter file = new System.IO.StreamWriter("Aztec.txt"))
    {
        int barcodesFound = gdpictureImaging.BarcodeAztecReaderGetBarcodeCount();
 
        for (int i = 1; i <= barcodesFound; i++)
        {
            // Decoded information.
            file.WriteLine("Decoded info = " + gdpictureImaging.BarcodeAztecReaderGetBarcodeValue(i));
 
            // The raw bytes decoded. It was post-processed to find the correct decoded info based on detected Encoding.
            file.WriteLine("Raw bytes = " + gdpictureImaging.BarcodeAztecReaderGetBarcodeValueRAW(i));
 
            // The barcode position, given by the coordinates of the corners.
            file.WriteLine("Position =  Top-Left=["
                + gdpictureImaging.BarcodeAztecReaderGetBarcodeX1(i) + ", " + gdpictureImaging.BarcodeAztecReaderGetBarcodeY1(i)
                + "] Top-Right=[" + gdpictureImaging.BarcodeAztecReaderGetBarcodeX2(i) + ", " + gdpictureImaging.BarcodeAztecReaderGetBarcodeY2(i)
                + "] Bottom-Right=[" + gdpictureImaging.BarcodeAztecReaderGetBarcodeX3(i) + ", " + gdpictureImaging.BarcodeAztecReaderGetBarcodeY3(i)
                + "] Bottom-Left=[" + gdpictureImaging.BarcodeAztecReaderGetBarcodeX4(i) + ", " + gdpictureImaging.BarcodeAztecReaderGetBarcodeY4(i) + "]");
        }
    }
 
    // Release used resources.
    gdpictureImaging.BarcodeAztecReaderClear();
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}

Reference

GdPictureImaging Class
GdPictureImaging Members