org.bytedeco.opencv.opencv_objdetect

Class QRCodeDetector

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.opencv.opencv_objdetect.GraphicalCodeDetector

org.bytedeco.opencv.opencv_objdetect.QRCodeDetector

All Implemented Interfaces:

AutoCloseable

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

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.opencv.opencv_objdetect.GraphicalCodeDetector

GraphicalCodeDetector.Impl

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	decodeCurved(GpuMat img, GpuMat points)
BytePointer	decodeCurved(GpuMat img, GpuMat points, GpuMat straight_qrcode)
BytePointer	decodeCurved(Mat img, Mat points)
BytePointer	decodeCurved(Mat img, Mat points, Mat straight_qrcode) \brief Decodes QR code on a curved surface in image once it's found by the detect() method.
String	decodeCurved(UMat img, UMat points)
String	decodeCurved(UMat img, UMat points, UMat straight_qrcode)
BytePointer	detectAndDecodeCurved(GpuMat img)
BytePointer	detectAndDecodeCurved(GpuMat img, GpuMat points, GpuMat straight_qrcode)
BytePointer	detectAndDecodeCurved(Mat img)
BytePointer	detectAndDecodeCurved(Mat img, Mat points, Mat straight_qrcode) \brief Both detects and decodes QR code on a curved surface
String	detectAndDecodeCurved(UMat img)
String	detectAndDecodeCurved(UMat img, UMat points, UMat straight_qrcode)
QRCodeDetector	getPointer(long i)
QRCodeDetector	position(long position)
QRCodeDetector	setEpsX(double epsX) \brief sets the epsilon used during the horizontal scan of QR code stop marker detection.
QRCodeDetector	setEpsY(double epsY) \brief sets the epsilon used during the vertical scan of QR code stop marker detection.
QRCodeDetector	setUseAlignmentMarkers(boolean useAlignmentMarkers) \brief use markers to improve the position of the corners of the QR code alignmentMarkers using by default

Methods inherited from class org.bytedeco.opencv.opencv_objdetect.GraphicalCodeDetector

decode, decode, decode, decode, decode, decode, decodeMulti, decodeMulti, decodeMulti, decodeMulti, decodeMulti, decodeMulti, decodeMulti, decodeMulti, decodeMulti, decodeMulti, decodeMulti, decodeMulti, detect, detect, detect, detectAndDecode, detectAndDecode, detectAndDecode, detectAndDecode, detectAndDecode, detectAndDecode, detectAndDecodeMulti, detectAndDecodeMulti, detectAndDecodeMulti, detectAndDecodeMulti, detectAndDecodeMulti, detectAndDecodeMulti, detectAndDecodeMulti, detectAndDecodeMulti, detectAndDecodeMulti, detectAndDecodeMulti, detectAndDecodeMulti, detectAndDecodeMulti, detectMulti, detectMulti, detectMulti, put

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, getDirectBufferAddress, getPointer, getPointer, getPointer, hashCode, interruptDeallocatorThread, isNull, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetAddress, offsetof, offsetof, parseBytes, physicalBytes, physicalBytesInaccurate, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, sizeof, toString, totalBytes, totalCount, 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).

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 GraphicalCodeDetector

getPointer

public QRCodeDetector getPointer(long i)

Overrides:

getPointer in class GraphicalCodeDetector

setEpsX

@ByRef
public QRCodeDetector 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

@ByRef
public QRCodeDetector 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.

setUseAlignmentMarkers

@ByRef
public QRCodeDetector setUseAlignmentMarkers(@Cast(value="bool")
                                                     boolean useAlignmentMarkers)

\brief use markers to improve the position of the corners of the QR code alignmentMarkers using by default

decodeCurved

@opencv_core.Str
public BytePointer decodeCurved(@ByVal
                                                  Mat img,
                                                  @ByVal
                                                  Mat points,
                                                  @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                                  Mat straight_qrcode)

\brief 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:

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

@opencv_core.Str
public BytePointer decodeCurved(@ByVal
                                                  Mat img,
                                                  @ByVal
                                                  Mat points)

decodeCurved

@opencv_core.Str
public String decodeCurved(@ByVal
                                             UMat img,
                                             @ByVal
                                             UMat points,
                                             @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                             UMat straight_qrcode)

decodeCurved

@opencv_core.Str
public String decodeCurved(@ByVal
                                             UMat img,
                                             @ByVal
                                             UMat points)

decodeCurved

@opencv_core.Str
public BytePointer decodeCurved(@ByVal
                                                  GpuMat img,
                                                  @ByVal
                                                  GpuMat points,
                                                  @ByVal(nullValue="cv::OutputArray(cv::noArray())")
                                                  GpuMat straight_qrcode)

decodeCurved

@opencv_core.Str
public BytePointer decodeCurved(@ByVal
                                                  GpuMat img,
                                                  @ByVal
                                                  GpuMat points)

detectAndDecodeCurved

@StdString
public BytePointer detectAndDecodeCurved(@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 on a curved surface

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

detectAndDecodeCurved

@StdString
public BytePointer detectAndDecodeCurved(@ByVal
                                                     Mat img)

detectAndDecodeCurved

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

detectAndDecodeCurved

@StdString
public String detectAndDecodeCurved(@ByVal
                                                UMat img)

detectAndDecodeCurved

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

detectAndDecodeCurved

@StdString
public BytePointer detectAndDecodeCurved(@ByVal
                                                     GpuMat img)