org.bytedeco.opencv.opencv_objdetect

Class QRCodeDetector

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.opencv.opencv_objdetect.QRCodeDetector

All Implemented Interfaces:

AutoCloseable

@Namespace(value="cv")
 @NoOffset
 @Properties(inherit=opencv_objdetect.class)
public class QRCodeDetector
extends Pointer

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator, Pointer.ReferenceCounter

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
QRCodeDetector()
QRCodeDetector(long size) Native array allocator.
QRCodeDetector(Pointer p) Pointer cast constructor.

Method Summary

Modifier and Type	Method and Description
BytePointer	decode(GpuMat img, GpuMat points)
BytePointer	decode(GpuMat img, GpuMat points, GpuMat straight_qrcode)
BytePointer	decode(Mat img, Mat points)
BytePointer	decode(Mat img, Mat points, Mat straight_qrcode) \brief Decodes QR code in image once it's found by the detect() method.
String	decode(UMat img, UMat points)
String	decode(UMat img, UMat points, UMat straight_qrcode)
boolean	decodeMulti(GpuMat img, GpuMat points, StringVector decoded_info)
boolean	decodeMulti(GpuMat img, GpuMat points, StringVector decoded_info, GpuMatVector straight_qrcode)
boolean	decodeMulti(GpuMat img, GpuMat points, StringVector decoded_info, MatVector straight_qrcode)
boolean	decodeMulti(GpuMat img, GpuMat points, StringVector decoded_info, UMatVector straight_qrcode)
boolean	decodeMulti(Mat img, Mat points, StringVector decoded_info)
boolean	decodeMulti(Mat img, Mat points, StringVector decoded_info, GpuMatVector straight_qrcode)
boolean	decodeMulti(Mat img, Mat points, StringVector decoded_info, MatVector straight_qrcode) \brief Decodes QR codes in image once it's found by the detect() method.
boolean	decodeMulti(Mat img, Mat points, StringVector decoded_info, UMatVector straight_qrcode)
boolean	decodeMulti(UMat img, UMat points, StringVector decoded_info)
boolean	decodeMulti(UMat img, UMat points, StringVector decoded_info, GpuMatVector straight_qrcode)
boolean	decodeMulti(UMat img, UMat points, StringVector decoded_info, MatVector straight_qrcode)
boolean	decodeMulti(UMat img, UMat points, StringVector decoded_info, UMatVector straight_qrcode)
boolean	detect(GpuMat img, GpuMat points)
boolean	detect(Mat img, Mat points) \brief Detects QR code in image and returns the quadrangle containing the code.
boolean	detect(UMat img, UMat points)
BytePointer	detectAndDecode(GpuMat img)
BytePointer	detectAndDecode(GpuMat img, GpuMat points, GpuMat straight_qrcode)
BytePointer	detectAndDecode(Mat img)
BytePointer	detectAndDecode(Mat img, Mat points, Mat straight_qrcode) \brief Both detects and decodes QR code
String	detectAndDecode(UMat img)
String	detectAndDecode(UMat img, UMat points, UMat straight_qrcode)
boolean	detectAndDecodeMulti(GpuMat img, StringVector decoded_info)
boolean	detectAndDecodeMulti(GpuMat img, StringVector decoded_info, GpuMat points, GpuMatVector straight_qrcode)
boolean	detectAndDecodeMulti(GpuMat img, StringVector decoded_info, GpuMat points, MatVector straight_qrcode)
boolean	detectAndDecodeMulti(GpuMat img, StringVector decoded_info, GpuMat points, UMatVector straight_qrcode)
boolean	detectAndDecodeMulti(Mat img, StringVector decoded_info)
boolean	detectAndDecodeMulti(Mat img, StringVector decoded_info, Mat points, GpuMatVector straight_qrcode)
boolean	detectAndDecodeMulti(Mat img, StringVector decoded_info, Mat points, MatVector straight_qrcode) \brief Both detects and decodes QR codes
boolean	detectAndDecodeMulti(Mat img, StringVector decoded_info, Mat points, UMatVector straight_qrcode)
boolean	detectAndDecodeMulti(UMat img, StringVector decoded_info)
boolean	detectAndDecodeMulti(UMat img, StringVector decoded_info, UMat points, GpuMatVector straight_qrcode)
boolean	detectAndDecodeMulti(UMat img, StringVector decoded_info, UMat points, MatVector straight_qrcode)
boolean	detectAndDecodeMulti(UMat img, StringVector decoded_info, UMat points, UMatVector straight_qrcode)
boolean	detectMulti(GpuMat img, GpuMat points)
boolean	detectMulti(Mat img, Mat points) \brief Detects QR codes in image and returns the vector of the quadrangles containing the codes.
boolean	detectMulti(UMat img, UMat points)
QRCodeDetector	position(long position)
void	setEpsX(double epsX) \brief sets the epsilon used during the horizontal scan of QR code stop marker detection.
void	setEpsY(double epsY) \brief sets the epsilon used during the vertical scan of QR code stop marker detection.

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, availablePhysicalBytes, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, hashCode, isNull, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, parseBytes, physicalBytes, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, toString, totalBytes, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

QRCodeDetector

public QRCodeDetector(Pointer p)

Pointer cast constructor. Invokes Pointer.Pointer(Pointer).

QRCodeDetector

public QRCodeDetector(long size)

Native array allocator. Access with Pointer.position(long).

QRCodeDetector

public QRCodeDetector()

Method Detail

position

public QRCodeDetector position(long position)

Overrides:

position in class Pointer

setEpsX

public void setEpsX(double epsX)

\brief sets the epsilon used during the horizontal scan of QR code stop marker detection.

Parameters:

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

public void setEpsY(double epsY)

\brief sets the epsilon used during the vertical scan of QR code stop marker detection.

Parameters:

epsY - Epsilon neighborhood, which allows you to determine the vertical pattern of the scheme 1:1:3:1:1 according to QR code standard.

detect

@Cast(value="bool")
public boolean detect(@ByVal
                                          Mat img,
                                          @ByVal
                                          Mat points)

\brief Detects QR code in image and returns the quadrangle containing the code.

Parameters:

img - grayscale or color (BGR) image containing (or not) QR code.

points - Output vector of vertices of the minimum-area quadrangle containing the code.

detect

@Cast(value="bool")
public boolean detect(@ByVal
                                          UMat img,
                                          @ByVal
                                          UMat points)

detect

@Cast(value="bool")
public boolean detect(@ByVal
                                          GpuMat img,
                                          @ByVal
                                          GpuMat points)

decode

@StdString
public BytePointer decode(@ByVal
                                     Mat img,
                                     @ByVal
                                     Mat points,
                                     @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                     Mat straight_qrcode)

\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.

Parameters:

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

decode

@StdString
public BytePointer decode(@ByVal
                                     Mat img,
                                     @ByVal
                                     Mat points)

decode

@StdString
public String decode(@ByVal
                                UMat img,
                                @ByVal
                                UMat points,
                                @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                UMat straight_qrcode)

decode

@StdString
public String decode(@ByVal
                                UMat img,
                                @ByVal
                                UMat points)

decode

@StdString
public BytePointer decode(@ByVal
                                     GpuMat img,
                                     @ByVal
                                     GpuMat points,
                                     @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                     GpuMat straight_qrcode)

decode

@StdString
public BytePointer decode(@ByVal
                                     GpuMat img,
                                     @ByVal
                                     GpuMat points)

detectAndDecode

@StdString
public BytePointer detectAndDecode(@ByVal
                                              Mat img,
                                              @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                              Mat points,
                                              @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                              Mat straight_qrcode)

\brief Both detects and decodes QR code

Parameters:

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

detectAndDecode

@StdString
public BytePointer detectAndDecode(@ByVal
                                              Mat img)

detectAndDecode

@StdString
public String detectAndDecode(@ByVal
                                         UMat img,
                                         @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                         UMat points,
                                         @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                         UMat straight_qrcode)

detectAndDecode

@StdString
public String detectAndDecode(@ByVal
                                         UMat img)

detectAndDecode

@StdString
public BytePointer detectAndDecode(@ByVal
                                              GpuMat img,
                                              @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                              GpuMat points,
                                              @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                              GpuMat straight_qrcode)

detectAndDecode

@StdString
public BytePointer detectAndDecode(@ByVal
                                              GpuMat img)

detectMulti

@Cast(value="bool")
public boolean detectMulti(@ByVal
                                               Mat img,
                                               @ByVal
                                               Mat points)

\brief Detects QR codes in image and returns the vector of the quadrangles containing the codes.

Parameters:

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.

detectMulti

@Cast(value="bool")
public boolean detectMulti(@ByVal
                                               UMat img,
                                               @ByVal
                                               UMat points)

detectMulti

@Cast(value="bool")
public boolean detectMulti(@ByVal
                                               GpuMat img,
                                               @ByVal
                                               GpuMat points)

decodeMulti

@Cast(value="bool")
public boolean decodeMulti(@ByVal
                                               Mat img,
                                               @ByVal
                                               Mat points,
                                               @ByRef
                                               StringVector decoded_info,
                                               @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                               MatVector straight_qrcode)

\brief Decodes QR codes in image once it's found by the detect() method.

Parameters:

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

decodeMulti

@Cast(value="bool")
public boolean decodeMulti(@ByVal
                                               Mat img,
                                               @ByVal
                                               Mat points,
                                               @ByRef
                                               StringVector decoded_info)

decodeMulti

@Cast(value="bool")
public boolean decodeMulti(@ByVal
                                               Mat img,
                                               @ByVal
                                               Mat points,
                                               @ByRef
                                               StringVector decoded_info,
                                               @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                               UMatVector straight_qrcode)

decodeMulti

@Cast(value="bool")
public boolean decodeMulti(@ByVal
                                               Mat img,
                                               @ByVal
                                               Mat points,
                                               @ByRef
                                               StringVector decoded_info,
                                               @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                               GpuMatVector straight_qrcode)

decodeMulti

@Cast(value="bool")
public boolean decodeMulti(@ByVal
                                               UMat img,
                                               @ByVal
                                               UMat points,
                                               @ByRef
                                               StringVector decoded_info,
                                               @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                               MatVector straight_qrcode)

decodeMulti

@Cast(value="bool")
public boolean decodeMulti(@ByVal
                                               UMat img,
                                               @ByVal
                                               UMat points,
                                               @ByRef
                                               StringVector decoded_info)

decodeMulti

@Cast(value="bool")
public boolean decodeMulti(@ByVal
                                               UMat img,
                                               @ByVal
                                               UMat points,
                                               @ByRef
                                               StringVector decoded_info,
                                               @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                               UMatVector straight_qrcode)

decodeMulti

@Cast(value="bool")
public boolean decodeMulti(@ByVal
                                               UMat img,
                                               @ByVal
                                               UMat points,
                                               @ByRef
                                               StringVector decoded_info,
                                               @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                               GpuMatVector straight_qrcode)

decodeMulti

@Cast(value="bool")
public boolean decodeMulti(@ByVal
                                               GpuMat img,
                                               @ByVal
                                               GpuMat points,
                                               @ByRef
                                               StringVector decoded_info,
                                               @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                               MatVector straight_qrcode)

decodeMulti

@Cast(value="bool")
public boolean decodeMulti(@ByVal
                                               GpuMat img,
                                               @ByVal
                                               GpuMat points,
                                               @ByRef
                                               StringVector decoded_info)

decodeMulti

@Cast(value="bool")
public boolean decodeMulti(@ByVal
                                               GpuMat img,
                                               @ByVal
                                               GpuMat points,
                                               @ByRef
                                               StringVector decoded_info,
                                               @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                               UMatVector straight_qrcode)

decodeMulti

@Cast(value="bool")
public boolean decodeMulti(@ByVal
                                               GpuMat img,
                                               @ByVal
                                               GpuMat points,
                                               @ByRef
                                               StringVector decoded_info,
                                               @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                               GpuMatVector straight_qrcode)

detectAndDecodeMulti

@Cast(value="bool")
public boolean detectAndDecodeMulti(@ByVal
                                                        Mat img,
                                                        @ByRef
                                                        StringVector decoded_info,
                                                        @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                                        Mat points,
                                                        @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                                        MatVector straight_qrcode)

\brief Both detects and decodes QR codes

Parameters:

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

detectAndDecodeMulti

@Cast(value="bool")
public boolean detectAndDecodeMulti(@ByVal
                                                        Mat img,
                                                        @ByRef
                                                        StringVector decoded_info)

detectAndDecodeMulti

@Cast(value="bool")
public boolean detectAndDecodeMulti(@ByVal
                                                        Mat img,
                                                        @ByRef
                                                        StringVector decoded_info,
                                                        @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                                        Mat points,
                                                        @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                                        UMatVector straight_qrcode)

detectAndDecodeMulti

@Cast(value="bool")
public boolean detectAndDecodeMulti(@ByVal
                                                        Mat img,
                                                        @ByRef
                                                        StringVector decoded_info,
                                                        @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                                        Mat points,
                                                        @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                                        GpuMatVector straight_qrcode)

detectAndDecodeMulti

@Cast(value="bool")
public boolean detectAndDecodeMulti(@ByVal
                                                        UMat img,
                                                        @ByRef
                                                        StringVector decoded_info,
                                                        @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                                        UMat points,
                                                        @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                                        MatVector straight_qrcode)

detectAndDecodeMulti

@Cast(value="bool")
public boolean detectAndDecodeMulti(@ByVal
                                                        UMat img,
                                                        @ByRef
                                                        StringVector decoded_info)

detectAndDecodeMulti

@Cast(value="bool")
public boolean detectAndDecodeMulti(@ByVal
                                                        UMat img,
                                                        @ByRef
                                                        StringVector decoded_info,
                                                        @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                                        UMat points,
                                                        @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                                        UMatVector straight_qrcode)

detectAndDecodeMulti

@Cast(value="bool")
public boolean detectAndDecodeMulti(@ByVal
                                                        UMat img,
                                                        @ByRef
                                                        StringVector decoded_info,
                                                        @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                                        UMat points,
                                                        @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                                        GpuMatVector straight_qrcode)

detectAndDecodeMulti

@Cast(value="bool")
public boolean detectAndDecodeMulti(@ByVal
                                                        GpuMat img,
                                                        @ByRef
                                                        StringVector decoded_info,
                                                        @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                                        GpuMat points,
                                                        @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                                        MatVector straight_qrcode)

detectAndDecodeMulti

@Cast(value="bool")
public boolean detectAndDecodeMulti(@ByVal
                                                        GpuMat img,
                                                        @ByRef
                                                        StringVector decoded_info)

detectAndDecodeMulti

@Cast(value="bool")
public boolean detectAndDecodeMulti(@ByVal
                                                        GpuMat img,
                                                        @ByRef
                                                        StringVector decoded_info,
                                                        @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                                        GpuMat points,
                                                        @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                                        UMatVector straight_qrcode)

detectAndDecodeMulti

@Cast(value="bool")
public boolean detectAndDecodeMulti(@ByVal
                                                        GpuMat img,
                                                        @ByRef
                                                        StringVector decoded_info,
                                                        @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                                        GpuMat points,
                                                        @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                                        GpuMatVector straight_qrcode)