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// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html
#ifndef OPENCV_OBJDETECT_GRAPHICAL_CODE_DETECTOR_HPP
#define OPENCV_OBJDETECT_GRAPHICAL_CODE_DETECTOR_HPP
#include <opencv2/core.hpp>
namespace cv {
//! @addtogroup objdetect_common
//! @{
class CV_EXPORTS_W_SIMPLE GraphicalCodeDetector {
public:
CV_DEPRECATED_EXTERNAL // avoid using in C++ code, will be moved to "protected" (need to fix bindings first)
GraphicalCodeDetector();
GraphicalCodeDetector(const GraphicalCodeDetector&) = default;
GraphicalCodeDetector(GraphicalCodeDetector&&) = default;
GraphicalCodeDetector& operator=(const GraphicalCodeDetector&) = default;
GraphicalCodeDetector& operator=(GraphicalCodeDetector&&) = default;
/** @brief Detects graphical code in image and returns the quadrangle containing the code.
@param img grayscale or color (BGR) image containing (or not) graphical code.
@param points Output vector of vertices of the minimum-area quadrangle containing the code.
*/
CV_WRAP bool detect(InputArray img, OutputArray points) const;
/** @brief 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.
@param img grayscale or color (BGR) image containing graphical code.
@param points Quadrangle vertices found by detect() method (or some other algorithm).
@param straight_code The optional output image containing binarized code, will be empty if not found.
*/
CV_WRAP std::string decode(InputArray img, InputArray points, OutputArray straight_code = noArray()) const;
/** @brief Both detects and decodes graphical code
@param img grayscale or color (BGR) image containing graphical code.
@param points optional output array of vertices of the found graphical code quadrangle, will be empty if not found.
@param straight_code The optional output image containing binarized code
*/
CV_WRAP std::string detectAndDecode(InputArray img, OutputArray points = noArray(),
OutputArray straight_code = noArray()) const;
/** @brief Detects graphical codes in image and returns the vector of the quadrangles containing the codes.
@param img grayscale or color (BGR) image containing (or not) graphical codes.
@param points Output vector of vector of vertices of the minimum-area quadrangle containing the codes.
*/
CV_WRAP bool detectMulti(InputArray img, OutputArray points) const;
/** @brief Decodes graphical codes in image once it's found by the detect() method.
@param img grayscale or color (BGR) image containing graphical codes.
@param decoded_info UTF8-encoded output vector of string or empty vector of string if the codes cannot be decoded.
@param points vector of Quadrangle vertices found by detect() method (or some other algorithm).
@param straight_code The optional output vector of images containing binarized codes
*/
CV_WRAP bool decodeMulti(InputArray img, InputArray points, CV_OUT std::vector<std::string>& decoded_info,
OutputArrayOfArrays straight_code = noArray()) const;
/** @brief Both detects and decodes graphical codes
@param img grayscale or color (BGR) image containing graphical codes.
@param decoded_info UTF8-encoded output vector of string or empty vector of string if the codes cannot be decoded.
@param points optional output vector of vertices of the found graphical code quadrangles. Will be empty if not found.
@param 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.
*/
CV_WRAP bool detectAndDecodeMulti(InputArray img, CV_OUT std::vector<std::string>& decoded_info, OutputArray points = noArray(),
OutputArrayOfArrays straight_code = noArray()) const;
struct Impl;
protected:
Ptr<Impl> p;
};
//! @}
}
#endif
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