cv::GraphicalCodeDetector Class Reference

#include <opencv2/objdetect/graphical_code_detector.hpp>

Collaboration diagram for cv::GraphicalCodeDetector:

Public Member Functions
	GraphicalCodeDetector ()
	GraphicalCodeDetector (const GraphicalCodeDetector &)=default
	GraphicalCodeDetector (GraphicalCodeDetector &&)=default
std::string	decode (InputArray img, InputArray points, OutputArray straight_code=noArray()) const
	Decodes graphical code in image once it's found by the detect() method.
bool	decodeMulti (InputArray img, InputArray points, std::vector< std::string > &decoded_info, OutputArrayOfArrays straight_code=noArray()) const
	Decodes graphical codes in image once it's found by the detect() method.
bool	detect (InputArray img, OutputArray points) const
	Detects graphical code in image and returns the quadrangle containing the code.
std::string	detectAndDecode (InputArray img, OutputArray points=noArray(), OutputArray straight_code=noArray()) const
	Both detects and decodes graphical code.
bool	detectAndDecodeMulti (InputArray img, std::vector< std::string > &decoded_info, OutputArray points=noArray(), OutputArrayOfArrays straight_code=noArray()) const
	Both detects and decodes graphical codes.
bool	detectMulti (InputArray img, OutputArray points) const
	Detects graphical codes in image and returns the vector of the quadrangles containing the codes.
GraphicalCodeDetector &	operator= (const GraphicalCodeDetector &)=default
GraphicalCodeDetector &	operator= (GraphicalCodeDetector &&)=default

Protected Attributes
Ptr< Impl >	p

Constructor & Destructor Documentation

GraphicalCodeDetector() [1/3]

cv::GraphicalCodeDetector::GraphicalCodeDetector

(

)

GraphicalCodeDetector() [2/3]

cv::GraphicalCodeDetector::GraphicalCodeDetector ( const GraphicalCodeDetector & )

default

Here is the call graph for this function:

GraphicalCodeDetector() [3/3]

cv::GraphicalCodeDetector::GraphicalCodeDetector ( GraphicalCodeDetector && )

default

Here is the call graph for this function:

Member Function Documentation

decode()

std::string cv::GraphicalCodeDetector::decode	(	InputArray	img,
		InputArray	points,
		OutputArray	straight_code = noArray() ) const

Python:
	cv.GraphicalCodeDetector.decode(	img, points[, straight_code]	) ->	retval, straight_code
	cv.GraphicalCodeDetector.decodeBytes(	img, points[, straight_code]	) ->	retval, 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.

Here is the call graph for this function:

decodeMulti()

bool cv::GraphicalCodeDetector::decodeMulti	(	InputArray	img,
		InputArray	points,
		std::vector< std::string > &	decoded_info,
		OutputArrayOfArrays	straight_code = noArray() ) const

Python:
	cv.GraphicalCodeDetector.decodeBytesMulti(	img, points[, straight_code]	) ->	retval, decoded_info, straight_code
	cv.GraphicalCodeDetector.decodeMulti(	img, points[, straight_code]	) ->	retval, decoded_info, 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

Here is the call graph for this function:

detect()

bool cv::GraphicalCodeDetector::detect	(	InputArray	img,
		OutputArray	points ) const

Python:
	cv.GraphicalCodeDetector.detect(	img[, points]	) ->	retval, 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.

detectAndDecode()

std::string cv::GraphicalCodeDetector::detectAndDecode	(	InputArray	img,
		OutputArray	points = noArray(),
		OutputArray	straight_code = noArray() ) const

Python:
	cv.GraphicalCodeDetector.detectAndDecode(	img[, points[, straight_code]]	) ->	retval, points, straight_code
	cv.GraphicalCodeDetector.detectAndDecodeBytes(	img[, points[, straight_code]]	) ->	retval, points, 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

Here is the call graph for this function:

detectAndDecodeMulti()

bool cv::GraphicalCodeDetector::detectAndDecodeMulti	(	InputArray	img,
		std::vector< std::string > &	decoded_info,
		OutputArray	points = noArray(),
		OutputArrayOfArrays	straight_code = noArray() ) const

Python:
	cv.GraphicalCodeDetector.detectAndDecodeBytesMulti(	img[, points[, straight_code]]	) ->	retval, decoded_info, points, straight_code
	cv.GraphicalCodeDetector.detectAndDecodeMulti(	img[, points[, straight_code]]	) ->	retval, decoded_info, points, 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.

Here is the call graph for this function:

detectMulti()

bool cv::GraphicalCodeDetector::detectMulti	(	InputArray	img,
		OutputArray	points ) const

Python:
	cv.GraphicalCodeDetector.detectMulti(	img[, points]	) ->	retval, 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.

operator=() [1/2]

GraphicalCodeDetector & cv::GraphicalCodeDetector::operator= ( const GraphicalCodeDetector & )

default

Here is the call graph for this function:

operator=() [2/2]

GraphicalCodeDetector & cv::GraphicalCodeDetector::operator= ( GraphicalCodeDetector && )

default

Here is the call graph for this function:

Member Data Documentation

p

Ptr<Impl> cv::GraphicalCodeDetector::p

protected

---

The documentation for this class was generated from the following file:

• opencv2/objdetect/graphical_code_detector.hpp