Example





In This Topic
GdPicture14 Namespace / GdPictureImaging Class / BarcodeDataMatrixReaderClear Method

BarcodeDataMatrixReaderClear Method (GdPictureImaging)

In This Topic
Releases from memory all information about latest DataMatrix barcode detection.
Syntax
'Declaration

 

Public Sub BarcodeDataMatrixReaderClear() 
public void BarcodeDataMatrixReaderClear()
public procedure BarcodeDataMatrixReaderClear(); 
public function BarcodeDataMatrixReaderClear();
public: void BarcodeDataMatrixReaderClear(); 
public:

void BarcodeDataMatrixReaderClear(); 
Remarks

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

Example
Finding DataMatrix barcodes in an image and writes complete barcodes info into a file.
using (GdPictureImaging gdpictureImaging = new GdPictureImaging())

{

    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg", false);

 

    // Set to 0, so all the DataMatrix barcodes in the image should be found.

    int expectedBarcodes = 0;

 

    // Perform scanning at best speed, ignoring very damaged barcodes.

    BarcodeDataMatrixReaderScanMode mode = BarcodeDataMatrixReaderScanMode.BestSpeed;

 

    // Start the DataMatrix scanning process and write info into a text file.

    gdpictureImaging.BarcodeDataMatrixReaderDoScan(imageID, mode, expectedBarcodes);

 

    using (System.IO.StreamWriter file = new System.IO.StreamWriter("DataMatrix.txt"))

    {

        int barcodesFound = gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeCount();

 

        for (int i = 1; i <= barcodesFound; i++)

        {

            // Decoded information.

            file.WriteLine("Decoded info = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeValue(i));

 

            // The skew angle of the barcode, in degrees.

            file.WriteLine("Skew angle = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeSkewAngle(i));

 

            // The number of rows of the barcode.

            file.WriteLine("Rows = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeRows(i));

 

            // The number of columns of the barcode.

            file.WriteLine("Columns = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeColumns(i));

 

            // The raw bytes decoded. It was post-processed to find the correct decoded info based on detected Encoding.

            file.WriteLine("Raw bytes = " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeValueRAW(i));

 

            // The barcode position, given by the coordinates of the corners.

            file.WriteLine("Position =  Top-Left=["

                + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeX1(i) + ", " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeY1(i)

                + "] Top-Right=[" + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeX2(i) + ", " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeY2(i)

                + "] Bottom-Right=[" + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeX3(i) + ", " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeY3(i)

                + "] Bottom-Left=[" + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeX4(i) + ", " + gdpictureImaging.BarcodeDataMatrixReaderGetBarcodeY4(i) + "]");

        }

    }

 

    // Release used resources.

    gdpictureImaging.BarcodeDataMatrixReaderClear();

    gdpictureImaging.ReleaseGdPictureImage(imageID);

}
See Also