Constructor Detail

• QRCodeDetector

  protected QRCodeDetector​(long addr)

• QRCodeDetector

  public QRCodeDetector()

Method Detail

• __fromPtr__

  public static QRCodeDetector __fromPtr__​(long addr)

• setEpsX

  public QRCodeDetector setEpsX​(double epsX)

  sets the epsilon used during the horizontal scan of QR code stop marker detection.

  Parameters:

  epsX - Epsilon neighborhood, which allows you to determine the horizontal pattern of the scheme 1:1:3:1:1 according to QR code standard.

  Returns:

  automatically generated

• setEpsY

  public QRCodeDetector setEpsY​(double epsY)

  sets the epsilon used during the vertical scan of QR code stop marker detection.

  Parameters:

  epsY - Epsilon neighborhood, which allows you to determine the vertical pattern of the scheme 1:1:3:1:1 according to QR code standard.

  Returns:

  automatically generated

• setUseAlignmentMarkers

  public QRCodeDetector setUseAlignmentMarkers​(boolean useAlignmentMarkers)

  use markers to improve the position of the corners of the QR code alignmentMarkers using by default

  Parameters:

  useAlignmentMarkers - automatically generated

  Returns:

  automatically generated

• decodeCurved

  public java.lang.String decodeCurved​(Mat img,
                                       Mat points,
                                       Mat straight_qrcode)

  Decodes QR code on a curved surface in image once it's found by the detect() method. Returns UTF8-encoded output string or empty string if the code cannot be decoded.

  Parameters:

  img - grayscale or color (BGR) image containing QR code.

  points - Quadrangle vertices found by detect() method (or some other algorithm).

  straight_qrcode - The optional output image containing rectified and binarized QR code

  Returns:

  automatically generated

• decodeCurved

  public java.lang.String decodeCurved​(Mat img,
                                       Mat points)

  Decodes QR code on a curved surface in image once it's found by the detect() method. Returns UTF8-encoded output string or empty string if the code cannot be decoded.

  Parameters:

  img - grayscale or color (BGR) image containing QR code.

  points - Quadrangle vertices found by detect() method (or some other algorithm).

  Returns:

  automatically generated

• detectAndDecodeCurved

  public java.lang.String detectAndDecodeCurved​(Mat img,
                                                Mat points,
                                                Mat straight_qrcode)

  Both detects and decodes QR code on a curved surface

  Parameters:

  img - grayscale or color (BGR) image containing QR code.

  points - optional output array of vertices of the found QR code quadrangle. Will be empty if not found.

  straight_qrcode - The optional output image containing rectified and binarized QR code

  Returns:

  automatically generated

• detectAndDecodeCurved

  public java.lang.String detectAndDecodeCurved​(Mat img,
                                                Mat points)

  Both detects and decodes QR code on a curved surface

  Parameters:

  img - grayscale or color (BGR) image containing QR code.

  points - optional output array of vertices of the found QR code quadrangle. Will be empty if not found.

  Returns:

  automatically generated

• detectAndDecodeCurved

  public java.lang.String detectAndDecodeCurved​(Mat img)

  Both detects and decodes QR code on a curved surface

  Parameters:

  img - grayscale or color (BGR) image containing QR code.

  Returns:

  automatically generated

• finalize

  protected void finalize()
                   throws java.lang.Throwable

  Overrides:

  finalize in class GraphicalCodeDetector

  Throws:

  java.lang.Throwable