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backport: refined QRCodeDetector API for OpenCV 4.0

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This commit is contained in:
Vadim Pisarevsky
2018-11-09 12:57:27 +03:00
committed by Alexander Alekhin
parent 8675a8c743
commit 82e8657a6d
5 changed files with 136 additions and 36 deletions
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modules/objdetect/include/opencv2/objdetect.hpp
+36 -6
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@@ -670,16 +670,46 @@ public:
void groupRectangles(std::vector<cv::Rect>& rectList, std::vector<double>& weights, int groupThreshold, double eps) const;
};
class CV_EXPORTS QRCodeDetector
class CV_EXPORTS_W QRCodeDetector
{
public:
QRCodeDetector();
CV_WRAP QRCodeDetector();
~QRCodeDetector();
void setEpsX(double epsX);
void setEpsY(double epsY);
/** @brief sets the epsilon used during the horizontal scan of QR code stop marker detection.
@param epsX Epsilon neighborhood, which allows you to determine the horizontal pattern
of the scheme 1:1:3:1:1 according to QR code standard.
*/
CV_WRAP void setEpsX(double epsX);
/** @brief sets the epsilon used during the vertical scan of QR code stop marker detection.
@param epsY Epsilon neighborhood, which allows you to determine the vertical pattern
of the scheme 1:1:3:1:1 according to QR code standard.
*/
CV_WRAP void setEpsY(double epsY);
bool detect(InputArray in, OutputArray points) const;
/** @brief Detects QR code in image and returns the quadrangle containing the code.
@param img grayscale or color (BGR) image containing (or not) QR 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 QR 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 QR code.
@param points Quadrangle vertices found by detect() method (or some other algorithm).
@param straight_qrcode The optional output image containing rectified and binarized QR code
*/
CV_WRAP cv::String decode(InputArray img, InputArray points, OutputArray straight_qrcode = noArray());
/** @brief Both detects and decodes QR code
@param img grayscale or color (BGR) image containing QR code.
@param points opiotnal output array of vertices of the found QR code quadrangle. Will be empty if not found.
@param straight_qrcode The optional output image containing rectified and binarized QR code
*/
CV_WRAP cv::String detectAndDecode(InputArray img, OutputArray points=noArray(),
OutputArray straight_qrcode = noArray());
protected:
struct Impl;
Ptr<Impl> p;
@@ -700,8 +730,8 @@ CV_EXPORTS bool detectQRCode(InputArray in, std::vector<Point> &points, double e
@param straight_qrcode Matrix of the type CV_8UC1 containing an binary straight QR code.
*/
CV_EXPORTS bool decodeQRCode(InputArray in, InputArray points, std::string &decoded_info, OutputArray straight_qrcode = noArray());
//! @} objdetect
//! @} objdetect
}
#include "opencv2/objdetect/detection_based_tracker.hpp"