Package org.opencv.video
Class SparseOpticalFlow
- java.lang.Object
-
- org.opencv.core.Algorithm
-
- org.opencv.video.SparseOpticalFlow
-
- Direct Known Subclasses:
SparsePyrLKOpticalFlow
public class SparseOpticalFlow extends Algorithm
Base interface for sparse optical flow algorithms.
-
-
Constructor Summary
Constructors Modifier Constructor Description protected
SparseOpticalFlow(long addr)
-
Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static SparseOpticalFlow
__fromPtr__(long addr)
void
calc(Mat prevImg, Mat nextImg, Mat prevPts, Mat nextPts, Mat status)
Calculates a sparse optical flow.void
calc(Mat prevImg, Mat nextImg, Mat prevPts, Mat nextPts, Mat status, Mat err)
Calculates a sparse optical flow.protected void
finalize()
-
Methods inherited from class org.opencv.core.Algorithm
clear, empty, getDefaultName, getNativeObjAddr, save
-
-
-
-
Method Detail
-
__fromPtr__
public static SparseOpticalFlow __fromPtr__(long addr)
-
calc
public void calc(Mat prevImg, Mat nextImg, Mat prevPts, Mat nextPts, Mat status, Mat err)
Calculates a sparse optical flow.- Parameters:
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).
-
calc
public void calc(Mat prevImg, Mat nextImg, Mat prevPts, Mat nextPts, Mat status)
Calculates a sparse optical flow.- Parameters:
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.
-
-