Package org.opencv.objdetect

Class GraphicalCodeDetector

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected long nativeObj  

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      protected GraphicalCodeDetector​(long addr)  

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static GraphicalCodeDetector __fromPtr__​(long addr)  
      java.lang.String decode​(Mat img, Mat points)
      Decodes graphical code in image once it's found by the detect() method.
      java.lang.String decode​(Mat img, Mat points, Mat straight_code)
      Decodes graphical code in image once it's found by the detect() method.
      boolean decodeMulti​(Mat img, Mat points, java.util.List<java.lang.String> decoded_info)
      Decodes graphical codes in image once it's found by the detect() method.
      boolean decodeMulti​(Mat img, Mat points, java.util.List<java.lang.String> decoded_info, java.util.List<Mat> straight_code)
      Decodes graphical codes in image once it's found by the detect() method.
      boolean detect​(Mat img, Mat points)
      Detects graphical code in image and returns the quadrangle containing the code.
      java.lang.String detectAndDecode​(Mat img)
      Both detects and decodes graphical code
      java.lang.String detectAndDecode​(Mat img, Mat points)
      Both detects and decodes graphical code
      java.lang.String detectAndDecode​(Mat img, Mat points, Mat straight_code)
      Both detects and decodes graphical code
      boolean detectAndDecodeMulti​(Mat img, java.util.List<java.lang.String> decoded_info)
      Both detects and decodes graphical codes
      boolean detectAndDecodeMulti​(Mat img, java.util.List<java.lang.String> decoded_info, Mat points)
      Both detects and decodes graphical codes
      boolean detectAndDecodeMulti​(Mat img, java.util.List<java.lang.String> decoded_info, Mat points, java.util.List<Mat> straight_code)
      Both detects and decodes graphical codes
      boolean detectMulti​(Mat img, Mat points)
      Detects graphical codes in image and returns the vector of the quadrangles containing the codes.
      protected void finalize()  
      long getNativeObjAddr()  

      • Methods inherited from class java.lang.Object

        clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • nativeObj

        protected final long nativeObj

    • Constructor Detail

      • GraphicalCodeDetector

        protected GraphicalCodeDetector​(long addr)

    • Method Detail

      • getNativeObjAddr

        public long getNativeObjAddr()

      • detect

        public boolean detect​(Mat img,
                      Mat points)
        Detects graphical code in image and returns the quadrangle containing the code.
        Parameters:
        img - grayscale or color (BGR) image containing (or not) graphical code.
        points - Output vector of vertices of the minimum-area quadrangle containing the code.
        Returns:
        automatically generated

      • decode

        public java.lang.String decode​(Mat img,
                               Mat points,
                               Mat straight_code)
        Decodes graphical code 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 graphical code.
        points - Quadrangle vertices found by detect() method (or some other algorithm).
        straight_code - The optional output image containing binarized code, will be empty if not found.
        Returns:
        automatically generated

      • decode

        public java.lang.String decode​(Mat img,
                               Mat points)
        Decodes graphical code 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 graphical code.
        points - Quadrangle vertices found by detect() method (or some other algorithm).
        Returns:
        automatically generated

      • detectAndDecode

        public java.lang.String detectAndDecode​(Mat img,
                                        Mat points,
                                        Mat straight_code)
        Both detects and decodes graphical code
        Parameters:
        img - grayscale or color (BGR) image containing graphical code.
        points - optional output array of vertices of the found graphical code quadrangle, will be empty if not found.
        straight_code - The optional output image containing binarized code
        Returns:
        automatically generated

      • detectAndDecode

        public java.lang.String detectAndDecode​(Mat img,
                                        Mat points)
        Both detects and decodes graphical code
        Parameters:
        img - grayscale or color (BGR) image containing graphical code.
        points - optional output array of vertices of the found graphical code quadrangle, will be empty if not found.
        Returns:
        automatically generated

      • detectAndDecode

        public java.lang.String detectAndDecode​(Mat img)
        Both detects and decodes graphical code
        Parameters:
        img - grayscale or color (BGR) image containing graphical code.
        Returns:
        automatically generated

      • detectMulti

        public boolean detectMulti​(Mat img,
                           Mat points)
        Detects graphical codes in image and returns the vector of the quadrangles containing the codes.
        Parameters:
        img - grayscale or color (BGR) image containing (or not) graphical codes.
        points - Output vector of vector of vertices of the minimum-area quadrangle containing the codes.
        Returns:
        automatically generated

      • decodeMulti

        public boolean decodeMulti​(Mat img,
                           Mat points,
                           java.util.List<java.lang.String> decoded_info,
                           java.util.List<Mat> straight_code)
        Decodes graphical codes in image once it's found by the detect() method.
        Parameters:
        img - grayscale or color (BGR) image containing graphical codes.
        decoded_info - UTF8-encoded output vector of string or empty vector of string if the codes cannot be decoded.
        points - vector of Quadrangle vertices found by detect() method (or some other algorithm).
        straight_code - The optional output vector of images containing binarized codes
        Returns:
        automatically generated

      • decodeMulti

        public boolean decodeMulti​(Mat img,
                           Mat points,
                           java.util.List<java.lang.String> decoded_info)
        Decodes graphical codes in image once it's found by the detect() method.
        Parameters:
        img - grayscale or color (BGR) image containing graphical codes.
        decoded_info - UTF8-encoded output vector of string or empty vector of string if the codes cannot be decoded.
        points - vector of Quadrangle vertices found by detect() method (or some other algorithm).
        Returns:
        automatically generated

      • detectAndDecodeMulti

        public boolean detectAndDecodeMulti​(Mat img,
                                    java.util.List<java.lang.String> decoded_info,
                                    Mat points,
                                    java.util.List<Mat> straight_code)
        Both detects and decodes graphical codes
        Parameters:
        img - grayscale or color (BGR) image containing graphical codes.
        decoded_info - UTF8-encoded output vector of string or empty vector of string if the codes cannot be decoded.
        points - optional output vector of vertices of the found graphical code quadrangles. Will be empty if not found.
        straight_code - The optional vector of images containing binarized codes
        • If there are QR codes encoded with a Structured Append mode on the image and all of them detected and decoded correctly, method writes a full message to position corresponds to 0-th code in a sequence. The rest of QR codes from the same sequence have empty string.
        Returns:
        automatically generated

      • detectAndDecodeMulti

        public boolean detectAndDecodeMulti​(Mat img,
                                    java.util.List<java.lang.String> decoded_info,
                                    Mat points)
        Both detects and decodes graphical codes
        Parameters:
        img - grayscale or color (BGR) image containing graphical codes.
        decoded_info - UTF8-encoded output vector of string or empty vector of string if the codes cannot be decoded.
        points - optional output vector of vertices of the found graphical code quadrangles. Will be empty if not found.
        • If there are QR codes encoded with a Structured Append mode on the image and all of them detected and decoded correctly, method writes a full message to position corresponds to 0-th code in a sequence. The rest of QR codes from the same sequence have empty string.
        Returns:
        automatically generated

      • detectAndDecodeMulti

        public boolean detectAndDecodeMulti​(Mat img,
                                    java.util.List<java.lang.String> decoded_info)
        Both detects and decodes graphical codes
        Parameters:
        img - grayscale or color (BGR) image containing graphical codes.
        decoded_info - UTF8-encoded output vector of string or empty vector of string if the codes cannot be decoded.
        • If there are QR codes encoded with a Structured Append mode on the image and all of them detected and decoded correctly, method writes a full message to position corresponds to 0-th code in a sequence. The rest of QR codes from the same sequence have empty string.
        Returns:
        automatically generated

      • finalize

        protected void finalize()
                 throws java.lang.Throwable
        Overrides:
        finalize in class java.lang.Object
        Throws:
        java.lang.Throwable