OpenCV 4.11.0-pre
Open Source Computer Vision
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Base interface for sparse optical flow algorithms. More...
#include <opencv2/cudaoptflow.hpp>
Public Member Functions | |
virtual void | calc (InputArray prevImg, InputArray nextImg, InputArray prevPts, InputOutputArray nextPts, OutputArray status, OutputArray err=cv::noArray(), Stream &stream=Stream::Null())=0 |
Calculates a sparse optical flow. | |
Public Member Functions inherited from cv::Algorithm | |
Algorithm () | |
virtual | ~Algorithm () |
virtual void | clear () |
Clears the algorithm state. | |
virtual bool | empty () const |
Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read. | |
virtual String | getDefaultName () const |
virtual void | read (const FileNode &fn) |
Reads algorithm parameters from a file storage. | |
virtual void | save (const String &filename) const |
void | write (const Ptr< FileStorage > &fs, const String &name=String()) const |
virtual void | write (FileStorage &fs) const |
Stores algorithm parameters in a file storage. | |
void | write (FileStorage &fs, const String &name) const |
Additional Inherited Members | |
Static Public Member Functions inherited from cv::Algorithm | |
template<typename _Tp > | |
static Ptr< _Tp > | load (const String &filename, const String &objname=String()) |
Loads algorithm from the file. | |
template<typename _Tp > | |
static Ptr< _Tp > | loadFromString (const String &strModel, const String &objname=String()) |
Loads algorithm from a String. | |
template<typename _Tp > | |
static Ptr< _Tp > | read (const FileNode &fn) |
Reads algorithm from the file node. | |
Protected Member Functions inherited from cv::Algorithm | |
void | writeFormat (FileStorage &fs) const |
Base interface for sparse optical flow algorithms.
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pure virtual |
Calculates a sparse optical flow.
prevImg | First input image. |
nextImg | Second input image of the same size and the same type as prevImg. |
prevPts | Vector of 2D points for which the flow needs to be found. |
nextPts | Output vector of 2D points containing the calculated new positions of input features in the second image. |
status | Output status vector. Each element of the vector is set to 1 if the flow for the corresponding features has been found. Otherwise, it is set to 0. |
err | Optional output vector that contains error response for each point (inverse confidence). |
stream | Stream for the asynchronous version. |