PatchCodeReaderGetCodeY1 Method (GdPictureImaging)

In This Topic

Returns the Y position (in pixels) of the top-left corner of a Patch Code detected by the PatchCodeReaderDoScan method.

Syntax

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

'Declaration
 
Public Function PatchCodeReaderGetCodeY1( _
   ByVal PatchCodeNo As Integer _
) As Integer

public int PatchCodeReaderGetCodeY1( 
   int PatchCodeNo
)

public function PatchCodeReaderGetCodeY1( 
    PatchCodeNo: Integer
): Integer;

public function PatchCodeReaderGetCodeY1( 
   PatchCodeNo : int
) : int;

public: int PatchCodeReaderGetCodeY1( 
   int PatchCodeNo
)

public:
int PatchCodeReaderGetCodeY1( 
   int PatchCodeNo
)

Parameters

PatchCodeNo: Patch Code index. Must be between 1 and PatchCodeReaderGetCodeCount returned value.

Return Value

The Patch Code Y position of the top-left corner.

Remarks

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

Example

Finding patch codes in an image and writing complete barcodes info into a file.

using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg", false);
 
    // Start the patch codes scanning process and write complete information into a text file.
    gdpictureImaging.PatchCodeReaderDoScan(imageID);
 
    using (System.IO.StreamWriter file = new System.IO.StreamWriter("patch codes.txt"))
    {
        int patch codesFound = gdpictureImaging.PatchCodeReaderGetCodeCount();
 
        for (int i = 1; i <= patch codesFound; i++)
        {
            // Patch codes type, possible values are 1, 2, 4, 8, 16 or 32.
            PatchCodeType type = gdpictureImaging.PatchCodeReaderGetCodeType(i);
            file.WriteLine("Patch code type = " + type.ToString());
 
            // The patch code position, given by the coordinates of the corners.
            file.WriteLine("Position =  Top-Left=["
                + gdpictureImaging.PatchCodeReaderGetCodeX1(i) + ", " + gdpictureImaging.PatchCodeReaderGetCodeY1(i)
                + "] Top-Right=[" + gdpictureImaging.PatchCodeReaderGetCodeX2(i) + ", " + gdpictureImaging.PatchCodeReaderGetCodeY2(i)
                + "] Bottom-Right=[" + gdpictureImaging.PatchCodeReaderGetCodeX3(i) + ", " + gdpictureImaging.PatchCodeReaderGetCodeY3(i)
                + "] Bottom-Left=[" + gdpictureImaging.PatchCodeReaderGetCodeX3(i) + ", " + gdpictureImaging.PatchCodeReaderGetCodeY4(i) + "]");
        }
    }
 
    // Release used resources.
    gdpictureImaging.PatchCodeReaderClear();
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}

Reference

GdPictureImaging Class
GdPictureImaging Members