#include <opencv2/objdetect.hpp>
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| QRCodeDetector () |
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| ~QRCodeDetector () |
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std::string | decode (InputArray img, InputArray points, OutputArray straight_qrcode=noArray()) |
| Decodes QR code in image once it's found by the detect() method. More...
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cv::String | decodeCurved (InputArray img, InputArray points, OutputArray straight_qrcode=noArray()) |
| Decodes QR code on a curved surface in image once it's found by the detect() method. More...
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bool | decodeMulti (InputArray img, InputArray points, std::vector< std::string > &decoded_info, OutputArrayOfArrays straight_qrcode=noArray()) const |
| Decodes QR codes in image once it's found by the detect() method. More...
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bool | detect (InputArray img, OutputArray points) const |
| Detects QR code in image and returns the quadrangle containing the code. More...
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std::string | detectAndDecode (InputArray img, OutputArray points=noArray(), OutputArray straight_qrcode=noArray()) |
| Both detects and decodes QR code. More...
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std::string | detectAndDecodeCurved (InputArray img, OutputArray points=noArray(), OutputArray straight_qrcode=noArray()) |
| Both detects and decodes QR code on a curved surface. More...
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bool | detectAndDecodeMulti (InputArray img, std::vector< std::string > &decoded_info, OutputArray points=noArray(), OutputArrayOfArrays straight_qrcode=noArray()) const |
| Both detects and decodes QR codes. More...
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bool | detectMulti (InputArray img, OutputArray points) const |
| Detects QR codes in image and returns the vector of the quadrangles containing the codes. More...
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void | setEpsX (double epsX) |
| sets the epsilon used during the horizontal scan of QR code stop marker detection. More...
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void | setEpsY (double epsY) |
| sets the epsilon used during the vertical scan of QR code stop marker detection. More...
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◆ QRCodeDetector()
cv::QRCodeDetector::QRCodeDetector |
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Python: |
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| cv.QRCodeDetector( | | ) -> | <QRCodeDetector object> |
◆ ~QRCodeDetector()
cv::QRCodeDetector::~QRCodeDetector |
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◆ decode()
Python: |
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| cv.QRCodeDetector.decode( | img, points[, straight_qrcode] | ) -> | retval, straight_qrcode |
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.
- Parameters
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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 |
◆ decodeCurved()
Python: |
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| cv.QRCodeDetector.decodeCurved( | img, points[, straight_qrcode] | ) -> | retval, 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
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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 |
◆ decodeMulti()
Python: |
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| cv.QRCodeDetector.decodeMulti( | img, points[, straight_qrcode] | ) -> | retval, decoded_info, straight_qrcode |
Decodes QR codes in image once it's found by the detect() method.
- Parameters
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img | grayscale or color (BGR) image containing QR 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_qrcode | The optional output vector of images containing rectified and binarized QR codes |
◆ detect()
Python: |
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| cv.QRCodeDetector.detect( | img[, points] | ) -> | retval, points |
Detects QR code in image and returns the quadrangle containing the code.
- Parameters
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img | grayscale or color (BGR) image containing (or not) QR code. |
points | Output vector of vertices of the minimum-area quadrangle containing the code. |
◆ detectAndDecode()
Python: |
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| cv.QRCodeDetector.detectAndDecode( | img[, points[, straight_qrcode]] | ) -> | retval, points, straight_qrcode |
Both detects and decodes QR code.
- Parameters
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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 |
◆ detectAndDecodeCurved()
Python: |
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| cv.QRCodeDetector.detectAndDecodeCurved( | img[, points[, straight_qrcode]] | ) -> | retval, points, straight_qrcode |
Both detects and decodes QR code on a curved surface.
- Parameters
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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 |
◆ detectAndDecodeMulti()
Python: |
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| cv.QRCodeDetector.detectAndDecodeMulti( | img[, points[, straight_qrcode]] | ) -> | retval, decoded_info, points, straight_qrcode |
Both detects and decodes QR codes.
- Parameters
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img | grayscale or color (BGR) image containing QR 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 QR code quadrangles. Will be empty if not found. |
straight_qrcode | The optional output vector of images containing rectified and binarized QR codes |
◆ detectMulti()
Python: |
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| cv.QRCodeDetector.detectMulti( | img[, points] | ) -> | retval, points |
Detects QR codes in image and returns the vector of the quadrangles containing the codes.
- Parameters
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img | grayscale or color (BGR) image containing (or not) QR codes. |
points | Output vector of vector of vertices of the minimum-area quadrangle containing the codes. |
◆ setEpsX()
void cv::QRCodeDetector::setEpsX |
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double |
epsX | ) |
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Python: |
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| cv.QRCodeDetector.setEpsX( | epsX | ) -> | None |
sets the epsilon used during the horizontal scan of QR code stop marker detection.
- Parameters
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epsX | Epsilon neighborhood, which allows you to determine the horizontal pattern of the scheme 1:1:3:1:1 according to QR code standard. |
◆ setEpsY()
void cv::QRCodeDetector::setEpsY |
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double |
epsY | ) |
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Python: |
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| cv.QRCodeDetector.setEpsY( | epsY | ) -> | None |
sets the epsilon used during the vertical scan of QR code stop marker detection.
- Parameters
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epsY | Epsilon neighborhood, which allows you to determine the vertical pattern of the scheme 1:1:3:1:1 according to QR code standard. |
Ptr<Impl> cv::QRCodeDetector::p |
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protected |
The documentation for this class was generated from the following file: