BarcodePDF417ReaderGetBarcodeSkewAngle Method (GdPictureImaging)
Returns the angle of a barcode detected by the BarcodePDF417ReaderDoScan method.
public double BarcodePDF417ReaderGetBarcodeSkewAngle(
int
)
public function BarcodePDF417ReaderGetBarcodeSkewAngle(
: Integer
): Double;
public function BarcodePDF417ReaderGetBarcodeSkewAngle(
: int
) : double;
public: double BarcodePDF417ReaderGetBarcodeSkewAngle(
int
)
public:
double BarcodePDF417ReaderGetBarcodeSkewAngle(
int
)
'Declaration
Public Function BarcodePDF417ReaderGetBarcodeSkewAngle( _
ByVal As Integer _
) As Double
Parameters
- BarcodeNo
- Barcode index. Must be between 1 and BarcodePDF417ReaderGetBarcodeCount returned.
value.
Return Value
The barcode angle in degrees. The angle is measured clockwise relative to the horizontal axis of the image.
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);
}