org.bytedeco.opencv.opencv_wechat_qrcode

Class WeChatQRCode

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.opencv.opencv_wechat_qrcode.WeChatQRCode

All Implemented Interfaces:

AutoCloseable

@Namespace(value="cv::wechat_qrcode")
 @NoOffset
 @Properties(inherit=opencv_wechat_qrcode.class)
public class WeChatQRCode
extends Pointer

\addtogroup wechat_qrcode \{ /** \brief WeChat QRCode includes two CNN-based models: A object detection model and a super resolution model. Object detection model is applied to detect QRCode with the bounding box. super resolution model is applied to zoom in QRCode when it is small.

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
WeChatQRCode()
WeChatQRCode(BytePointer detector_prototxt_path, BytePointer detector_caffe_model_path, BytePointer super_resolution_prototxt_path, BytePointer super_resolution_caffe_model_path) \brief Initialize the WeChatQRCode.
WeChatQRCode(long size) Native array allocator.
WeChatQRCode(Pointer p) Pointer cast constructor.
WeChatQRCode(String detector_prototxt_path, String detector_caffe_model_path, String super_resolution_prototxt_path, String super_resolution_caffe_model_path)

Method Summary

Modifier and Type	Method and Description
StringVector	detectAndDecode(GpuMat img)
StringVector	detectAndDecode(GpuMat img, GpuMatVector points)
StringVector	detectAndDecode(GpuMat img, MatVector points)
StringVector	detectAndDecode(GpuMat img, UMatVector points)
StringVector	detectAndDecode(Mat img)
StringVector	detectAndDecode(Mat img, GpuMatVector points)
StringVector	detectAndDecode(Mat img, MatVector points) \brief Both detects and decodes QR code.
StringVector	detectAndDecode(Mat img, UMatVector points)
StringVector	detectAndDecode(UMat img)
StringVector	detectAndDecode(UMat img, GpuMatVector points)
StringVector	detectAndDecode(UMat img, MatVector points)
StringVector	detectAndDecode(UMat img, UMatVector points)
WeChatQRCode	getPointer(long i)
float	getScaleFactor()
WeChatQRCode	position(long position)
void	setScaleFactor(float _scalingFactor) \brief set scale factor QR code detector use neural network to detect QR.

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

WeChatQRCode

public WeChatQRCode(Pointer p)

Pointer cast constructor. Invokes Pointer(Pointer).

WeChatQRCode

public WeChatQRCode(long size)

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

WeChatQRCode

public WeChatQRCode(@StdString
                    BytePointer detector_prototxt_path,
                    @StdString
                    BytePointer detector_caffe_model_path,
                    @StdString
                    BytePointer super_resolution_prototxt_path,
                    @StdString
                    BytePointer super_resolution_caffe_model_path)

\brief Initialize the WeChatQRCode. It includes two models, which are packaged with caffe format. Therefore, there are prototxt and caffe models (In total, four paramenters).

Parameters:

detector_prototxt_path - prototxt file path for the detector

detector_caffe_model_path - caffe model file path for the detector

super_resolution_prototxt_path - prototxt file path for the super resolution model

super_resolution_caffe_model_path - caffe file path for the super resolution model

WeChatQRCode

public WeChatQRCode()

WeChatQRCode

public WeChatQRCode(@StdString
                    String detector_prototxt_path,
                    @StdString
                    String detector_caffe_model_path,
                    @StdString
                    String super_resolution_prototxt_path,
                    @StdString
                    String super_resolution_caffe_model_path)

Method Detail

position

public WeChatQRCode position(long position)

Overrides:

position in class Pointer

getPointer

public WeChatQRCode getPointer(long i)

Overrides:

getPointer in class Pointer

detectAndDecode

@ByVal
public StringVector detectAndDecode(@ByVal
                                            Mat img,
                                            @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                            MatVector points)

\brief Both detects and decodes QR code. To simplify the usage, there is a only API: detectAndDecode

Parameters:

img - supports grayscale or color (BGR) image.

points - optional output array of vertices of the found QR code quadrangle. Will be empty if not found.

Returns:

list of decoded string.

detectAndDecode

@ByVal
public StringVector detectAndDecode(@ByVal
                                            Mat img)

detectAndDecode

@ByVal
public StringVector detectAndDecode(@ByVal
                                            Mat img,
                                            @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                            UMatVector points)

detectAndDecode

@ByVal
public StringVector detectAndDecode(@ByVal
                                            Mat img,
                                            @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                            GpuMatVector points)

detectAndDecode

@ByVal
public StringVector detectAndDecode(@ByVal
                                            UMat img,
                                            @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                            MatVector points)

detectAndDecode

@ByVal
public StringVector detectAndDecode(@ByVal
                                            UMat img)

detectAndDecode

@ByVal
public StringVector detectAndDecode(@ByVal
                                            UMat img,
                                            @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                            UMatVector points)

detectAndDecode

@ByVal
public StringVector detectAndDecode(@ByVal
                                            UMat img,
                                            @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                            GpuMatVector points)

detectAndDecode

@ByVal
public StringVector detectAndDecode(@ByVal
                                            GpuMat img,
                                            @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                            MatVector points)

detectAndDecode

@ByVal
public StringVector detectAndDecode(@ByVal
                                            GpuMat img)

detectAndDecode

@ByVal
public StringVector detectAndDecode(@ByVal
                                            GpuMat img,
                                            @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                            UMatVector points)

detectAndDecode

@ByVal
public StringVector detectAndDecode(@ByVal
                                            GpuMat img,
                                            @ByVal(nullValue="cv::OutputArrayOfArrays(cv::noArray())")
                                            GpuMatVector points)

setScaleFactor

public void setScaleFactor(float _scalingFactor)

\brief set scale factor QR code detector use neural network to detect QR. Before running the neural network, the input image is pre-processed by scaling. By default, the input image is scaled to an image with an area of 160000 pixels. The scale factor allows to use custom scale the input image: width = scaleFactor*width height = scaleFactor*width scaleFactor valuse must be > 0 and <= 1, otherwise the scaleFactor value is set to -1 and use default scaled to an image with an area of 160000 pixels.

getScaleFactor

public float getScaleFactor()