Namespace OpenCvSharp

Classes

OpenCvSharp.

Struct for matching: query descriptor index, train descriptor index, train image index and distance between descriptors.

AgastFeatureDetector

Detects corners using the AGAST algorithm

AKAZE

Class implementing the AKAZE keypoint detector and descriptor extractor, described in @cite ANB13

Algorithm

Base class for high-level OpenCV algorithms

BackgroundSubtractor

The Base Class for Background/Foreground Segmentation. The class is only used to define the common interface for the whole family of background/foreground segmentation algorithms.

BackgroundSubtractorGMG

Background Subtractor module. Takes a series of images and returns a sequence of mask (8UC1) images of the same size, where 255 indicates Foreground and 0 represents Background.

BackgroundSubtractorMOG

Gaussian Mixture-based Backbround/Foreground Segmentation Algorithm

BackgroundSubtractorMOG2

The Base Class for Background/Foreground Segmentation. The class is only used to define the common interface for the whole family of background/foreground segmentation algorithms.

BFMatcher

Brute-force descriptor matcher. For each descriptor in the first set, this matcher finds the closest descriptor in the second set by trying each one.

BOWImgDescriptorExtractor

Brute-force descriptor matcher. For each descriptor in the first set, this matcher finds the closest descriptor in the second set by trying each one.

BOWKMeansTrainer

Brute-force descriptor matcher. For each descriptor in the first set, this matcher finds the closest descriptor in the second set by trying each one.

BOWTrainer

Brute-force descriptor matcher. For each descriptor in the first set, this matcher finds the closest descriptor in the second set by trying each one.

CalibrateCRF

The base class for camera response calibration algorithms.

CascadeClassifier

Cascade classifier class for object detection.

CLAHE

Contrast Limited Adaptive Histogram Equalization

ConnectedComponents

connected components that is returned from Cv2.ConnectedComponentsEx

Cv2.FishEye

The methods in this class use a so-called fisheye camera model.

CvObject

A class which has a pointer of OpenCV structure

DetectionROI

struct for detection region of interest (ROI)

DisposableObject

Represents a class which manages its own memory.

EM

The class implements the Expectation Maximization algorithm.

FastFeatureDetector

Detects corners using FAST algorithm by E. Rosten

Feature2D

Abstract base class for 2D image feature detectors and descriptor extractors

FlannBasedMatcher

Brute-force descriptor matcher. For each descriptor in the first set, this matcher finds the closest descriptor in the second set by trying each one.

GeneralizedHough

finds arbitrary template in the grayscale image using Generalized Hough Transform

GeneralizedHoughBallard

Ballard, D.H. (1981). Generalizing the Hough transform to detect arbitrary shapes. Pattern Recognition 13 (2): 111-122. Detects position only without traslation and rotation

GeneralizedHoughGuil

Guil, N., González-Linares, J.M. and Zapata, E.L. (1999). Bidimensional shape detection using an invariant approach. Pattern Recognition 32 (6): 1025-1038. Detects position, translation and rotation

HausdorffDistanceExtractor

A simple Hausdorff distance measure between shapes defined by contours

HierarchyIndex

Information about the image topology for cv::findContours

HOGDescriptor

HOG (Histogram-of-Oriented-Gradients) Descriptor and Object Detector

ImageEncodingParam

The format-specific save parameters for cv::imwrite and cv::imencode

InputArray

Proxy data type for passing Mat's and vector<>'s as input parameters

InputOutputArray

Proxy data type for passing Mat's and vector<>'s as input parameters. Synonym for OutputArray.

Kalman filter. The class implements standard Kalman filter \url{http://en.wikipedia.org/wiki/Kalman_filter}. However, you can modify KalmanFilter::transitionMatrix, KalmanFilter::controlMatrix and KalmanFilter::measurementMatrix to get the extended Kalman filter functionality.

KAZE

Class implementing the KAZE keypoint detector and descriptor extractor

KeyPointsFilter

A class filters a vector of keypoints.

LDA

Linear Discriminant Analysis

Line2D

2-dimentional line vector

Line3D

A 3-dimensional line object

LineIterator

Contrast Limited Adaptive Histogram Equalization

LineIterator.Pixel

LineIterator pixel data

LineSegmentDetector

Line segment detector class

Mat

OpenCV C++ n-dimensional dense array class (cv::Mat)

Mat.Indexer<T>

Mat Indexer

Mat.UnsafeIndexer<T>

Mat Indexer

Mat<TElem>

Type-specific abstract matrix

Mat<TElem>.Indexer

Matrix indexer

MatExpr

Matrix expression

MatExprRowColIndexer

MatIndexer<T>

Abstract definition of Mat indexer

MatMemoryManager<T>

A MemoryManager over an OpenCvSharpMat

MergeDebevec

The resulting HDR image is calculated as weighted average of the exposures considering exposure values and camera response.

For more information see @cite DM97 .

MergeExposures

The base class algorithms that can merge exposure sequence to a single image.

MergeMertens

Pixels are weighted using contrast, saturation and well-exposedness measures, than images are combined using laplacian pyramids.

The resulting image weight is constructed as weighted average of contrast, saturation and well-exposedness measures.

The resulting image doesn't require tonemapping and can be converted to 8-bit image by multiplying by 255, but it's recommended to apply gamma correction and/or linear tonemapping.

For more information see @cite MK07 .

Moments

Raster image moments

MSER

Maximal Stable Extremal Regions class

OpenCVException

The default exception to be thrown by OpenCV

OpenCvSharpException

The exception that is thrown by OpenCvSharp.

ORB

Class implementing the ORB (oriented BRIEF) keypoint detector and descriptor extractor.

described in @cite RRKB11 . The algorithm uses FAST in pyramids to detect stable keypoints, selects the strongest features using FAST or Harris response, finds their orientation using first-order moments and computes the descriptors using BRIEF (where the coordinates of random point pairs (or k-tuples) are rotated according to the measured orientation).

OutputArray

Proxy datatype for passing Mat's and List<>'s as output parameters

OutputArrayOfMatList

Proxy datatype for passing Mat's and List<>'s as output parameters

OutputArrayOfStructList<T>

Proxy datatype for passing Mat's and List<>'s as output parameters

PCA

Principal Component Analysis

Ptr

Template class for smart reference-counting pointers

PyrLKOpticalFlow

QRCodeDetector

ResourcesTracker

Used for managing the resources of OpenCVSharp, like Mat, MatExpr, etc.

RidgeDetectionFilter

Applies Ridge Detection Filter to an input image.

Implements Ridge detection similar to the one in Mathematica using the eigen values from the Hessian Matrix of the input image using Sobel Derivatives. Additional refinement can be done using Skeletonization and Binarization. Adapted from @cite segleafvein and @cite M_RF

ShapeContextDistanceExtractor

Implementation of the Shape Context descriptor and matching algorithm

ShapeDistanceExtractor

Abstract base class for shape distance algorithms.

SimilarRects

Class for grouping object candidates, detected by Cascade Classifier, HOG etc. instance of the class is to be passed to cv::partition (see cxoperations.hpp)

SimpleBlobDetector

Class for extracting blobs from an image.

SimpleBlobDetector.Params

SimpleBlobDetector parameters

SparseMat

Sparse matrix class.

SparseMat.Indexer<T>

Mat Indexer

SparseMatIndexer<T>

Abstract definition of Mat indexer

StereoBM

Semi-Global Stereo Matching

StereoMatcher

The base class for stereo correspondence algorithms.

StereoSGBM

Semi-Global Stereo Matching

Stitcher

High level image stitcher. It's possible to use this class without being aware of the entire stitching pipeline. However, to be able to achieve higher stitching stability and quality of the final images at least being familiar with the theory is recommended

Subdiv2D

Planar Subdivision

SuperResolution

Base class for Super Resolution algorithms.

SVD

Singular Value Decomposition class

TextDetector

An abstract class providing interface for text detection algorithms

TextDetectorCNN

TextDetectorCNN class provides the functionality of text bounding box detection.

Tonemap

Base class for tonemapping algorithms - tools that are used to map HDR image to 8-bit range.

TonemapDrago

Adaptive logarithmic mapping is a fast global tonemapping algorithm that scales the image in logarithmic domain.

Since it's a global operator the same function is applied to all the pixels, it is controlled by the bias parameter. Optional saturation enhancement is possible as described in @cite FL02. For more information see @cite DM03.

TonemapMantiuk

This algorithm transforms image to contrast using gradients on all levels of gaussian pyramid, transforms contrast values to HVS response and scales the response. After this the image is reconstructed from new contrast values.

For more information see @cite MM06.

TonemapReinhard

This is a global tonemapping operator that models human visual system.

Mapping function is controlled by adaptation parameter, that is computed using light adaptation and color adaptation. For more information see @cite RD05.

Tracker

Base abstract class for the long-term tracker

TrackerGOTURN

GOTURN (@cite GOTURN) is kind of trackers based on Convolutional Neural Networks (CNN).

TrackerMIL

The MIL algorithm trains a classifier in an online manner to separate the object from the background. Multiple Instance Learning avoids the drift problem for a robust tracking.The implementation is based on @cite MIL. Original code can be found here [http://vision.ucsd.edu/~bbabenko/project_miltrack.shtml]

UMat

OpenCV C++ n-dimensional dense array class (cv::Mat)

UsacParams

VideoCapture

Video capturing class

VideoCapturePara

Parameters of VideoCapture for hardware acceleration Please check the link below for current HW acceleration types support matrix https://github.com/opencv/opencv/wiki/Video-IO-hardware-acceleration

VideoWriter

AVI Video File Writer

VideoWriterPara

Parameters of VideoWriter for hardware acceleration Please check the link below for current HW acceleration types support matrix https://github.com/opencv/opencv/wiki/Video-IO-hardware-acceleration

WeChatQRCode

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.

Window

Wrapper of HighGUI window

Structs

CircleSegment

circle structure retrieved from cvHoughCircle

FourCC

4-character code of codec used to compress the frames.

LineSegmentPoint

Line segment structure retrieved from cvHoughLines2

LineSegmentPolar

Polar line segment retrieved from cvHoughLines2

Moments.NativeStruct

Params

RNG

Random Number Generator. The class implements RNG using Multiply-with-Carry algorithm.

RNG_MT19937

Mersenne Twister random number generator

SimpleBlobDetector.WParams

Vec2b

2-Tuple of byte (System.Byte)

Vec2d

2-Tuple of double (System.Double)

Vec2f

2-Tuple of float (System.Single)

Vec2i

2-Tuple of int (System.Int32)

Vec2s

2-Tuple of short (System.Int16)

Vec2w

2-Tuple of ushort (System.UInt16)

Vec3b

3-Tuple of byte (System.Byte)

Vec3d

3-Tuple of double (System.Double)

Vec3f

3-Tuple of float (System.Single)

Vec3i

3-Tuple of int (System.Int32)

Vec3s

3-Tuple of short (System.Int16)

Vec3w

3-Tuple of ushort (System.UInt16)

Vec4b

4-Tuple of byte (System.Byte)

Vec4d

4-Tuple of double (System.Double)

Vec4f

4-Tuple of float (System.Single)

Vec4i

4-Tuple of int (System.Int32)

Vec4s

4-Tuple of short (System.Int16)

Vec4w

4-Tuple of ushort (System.UInt16)

Vec6b

6-Tuple of byte (System.Byte)

Vec6d

6-Tuple of double (System.Double)

Vec6f

6-Tuple of float (System.Single)

Vec6i

6-Tuple of int (System.Int32)

Vec6s

6-Tuple of short (System.Int16)

Vec6w

4-Tuple of ushort (System.UInt16)

WUsacParams

Interfaces

ICvPtrHolder

Represents a OpenCV-based class which has a native pointer.

IVec

Vec empty interface

IVec<TSelf, TElem>

Vec** interface

Enums

AccessFlag

cv::AccessFlag

AdaptiveThresholdTypes

Adaptive thresholding algorithms

AKAZEDescriptorType

cv::AKAZE descriptor type

AlgorithmParamType

cv::Algorithm parameter type

BorderTypes

Type of the border to create around the copied source image rectangle

ButtonType

Button type flags (cv::createButton)

CalibrationFlags

Different flags for cvCalibrateCamera2 and cvStereoCalibrate

CameraChannels

channel indices for multi-head camera live streams

CapturePosAviRatio

Position in relative units

CaptureType

Capture type of CvCapture (Camera or AVI file)

ChessboardFlags

Various operation flags for cvFindChessboardCorners

CmpType

The flag specifying the relation between the elements to be checked

ColorConversionCodes

Color conversion operation for cv::cvtColor

ColormapTypes

GNU Octave/MATLAB equivalent colormaps

ConnectedComponentsAlgorithmsTypes

connected components algorithm

ConnectedComponentsTypes

components algorithm output formats

ContourApproximationModes

Approximation method (for all the modes, except CV_RETR_RUNS, which uses built-in approximation).

ConvertImageModes

CovarFlags

Operation flags for Covariation

CpuFeatures

CriteriaTypes

Type of termination criteria

DctFlags

Transformation flags for cv::dct

DecompTypes

Inversion methods

DetectorType

AGAST type one of the four neighborhoods as defined in the paper

DftFlags

Transformation flags for cvDFT

DistanceTransformLabelTypes

distanceTransform algorithm flags

DistanceTransformMasks

Mask size for distance transform

DistanceTypes

Type of distance for cvDistTransform

DistributionType

Distribution type for cvRandArr, etc.

DrawMatchesFlags

EdgePreservingMethods

Edge preserving filters

ErrorCode

Error status codes

EssentialMatMethod

Method for computing the essential matrix

FASTType

AGAST type one of the four neighborhoods as defined in the paper

FileNode.Types

type of the file storage node

FileStorage.Modes

File storage mode

FileStorage.States

FindCirclesGridFlags

Method for solving a PnP problem:

FishEyeCalibrationFlags

FlipMode

Specifies how to flip the array

FloodFillFlags

floodFill Operation flags. Lower bits contain a connectivity value, 4 (default) or 8, used within the function. Connectivity determines which neighbors of a pixel are considered. Upper bits can be 0 or a combination of the following flags:

FormatType

Output string format of Mat.Dump()

FundamentalMatMethods

Method for computing the fundamental matrix

GemmFlags

The operation flags for cv::GEMM

GrabCutClasses

class of the pixel in GrabCut algorithm

GrabCutModes

GrabCut algorithm flags

HaarDetectionTypes

Modes of operation for cvHaarDetectObjects

HandEyeCalibrationMethod

method One of the implemented Hand-Eye calibration method

HersheyFonts

Font name identifier. Only a subset of Hershey fonts (http://sources.isc.org/utils/misc/hershey-font.txt) are supported now.

HistCompMethods

Comparison methods for cvCompareHist

HistogramNormType

L2-Hys normalization method

HomographyMethods

The method used to computed homography matrix

HoughModes

Variants of a Hough transform

ImreadModes

Specifies colorness and Depth of the loaded image

ImwriteEXRTypeFlags

ImwriteFlags

The format type IDs for cv::imwrite and cv::inencode

ImwritePAMFlags

Imwrite PAM specific tupletype flags used to define the 'TUPETYPE' field of a PAM file.

ImwritePNGFlags

Imwrite PNG specific flags used to tune the compression algorithm.

These flags will be modify the way of PNG image compression and will be passed to the underlying zlib processing stage. The effect of IMWRITE_PNG_StrategyFILTERED is to force more Huffman coding and less string matching; it is somewhat intermediate between IMWRITE_PNG_StrategyDEFAULT and IMWRITE_PNG_StrategyHUFFMAN_ONLY. IMWRITE_PNG_StrategyRLE is designed to be almost as fast as IMWRITE_PNG_StrategyHUFFMAN_ONLY, but give better compression for PNG image data. The strategy parameter only affects the compression ratio but not the correctness of the compressed output even if it is not set appropriately. IMWRITE_PNG_StrategyFIXED prevents the use of dynamic Huffman codes, allowing for a simpler decoder for special applications.

InOutArrayKind

InpaintMethod

The inpainting method

InterpolationFlags

Interpolation algorithm

KAZEDiffusivityType

cv::KAZE diffusivity type

KMeansFlags

Miscellaneous flags for cv::kmeans

LineSegmentDetectorModes

Variants of Line Segment %Detector

LineTypes

Type of the line

LocalOptimMethod

LogLevel

cv::utils::logging::LogLevel

MarkerTypes

Possible set of marker types used for the cv::drawMarker function

MatDiagType

diagonal type

MorphShapes

Shape of the structuring element

MorphTypes

Type of morphological operation

MotionTypes

[findTransformECC] specifying the type of motion

MouseEventFlags

Mouse Event Flags see cv::MouseCallback

MouseEventTypes

Mouse Events

NeighborSearchMethod

NextEdgeType

Parameter for Subdiv2D.GetEdge() specifying which of the related edges to return.

NormTypes

Type of norm

OpticalFlowFlags

cv::calcOpticalFlowPyrLK flags

ORBScoreType

cv::ORB score flags

PCA.Flags

Flags for PCA operations

PixelConnectivity

PixelConnectivity for LineIterator

ProjectionType

cv::initWideAngleProjMap flags

RectanglesIntersectTypes

types of intersection between rectangles

ReduceDimension

The dimension index along which the matrix is reduce.

ReduceTypes

The reduction operations for cvReduce

RetrievalModes

mode of the contour retrieval algorithm

RobotWorldHandEyeCalibrationMethod

One of the implemented Robot-World/Hand-Eye calibration method

RobustEstimationAlgorithms

type of the robust estimation algorithm

RotateFlags

an enum to specify how to rotate the array.

SamplingMethod

ScoreMethod

SeamlessCloneMethods

SeamlessClone method

ShapeMatchModes

Comparison methods for cv::matchShapes

SolveLPResult

return codes for cv::solveLP() function

SolvePnPFlags

Method for solving a PnP problem:

SortFlags

Signals an error and raises the exception.

StereoRectificationFlags

The operation flags for cvStereoRectify

StereoSGBMMode

Stitcher.Mode

Stitcher.Status

Status code

SVD.Flags

Operation flags for SVD

TemplateMatchModes

Specifies the way the template must be compared with image regions

ThresholdTypes

Thresholding type

UMatUsageFlags

cv::UMatUsageFlags

VideoAccelerationType

Video Acceleration type Used as value in #CAP_PROP_HW_ACCELERATION and #VIDEOWRITER_PROP_HW_ACCELERATION note In case of FFmpeg backend, it translated to enum AVHWDeviceType (https://github.com/FFmpeg/FFmpeg/blob/master/libavutil/hwcontext.h)

VideoCaptureAPIs

Camera device types

VideoCaptureProperties

Property identifiers for CvCapture

VideoWriterProperties

VideoWriter generic properties identifier.

WarpPolarMode

Specify the polar mapping mode

WindowFlags

Flags for cv::namedWindow

WindowPropertyFlags

Property identifiers for cvGetWindowProperty/cvSetWindowProperty