boofcv.alg.flow

Class DenseOpticalFlowKlt<I extends boofcv.struct.image.ImageGray,D extends boofcv.struct.image.ImageGray>

java.lang.Object

boofcv.alg.flow.DenseOpticalFlowKlt<I,D>

public class DenseOpticalFlowKlt<I extends boofcv.struct.image.ImageGray,D extends boofcv.struct.image.ImageGray>
extends java.lang.Object

Computes the dense optical flow using KltTracker. A feature is computed from each pixel in the prev image and it is tracked into the curr image. The flow assigned to a pixel is the template with the lowest error which overlaps it. In other words, a pixel is assigned the flow with the lowest error with in 'radius' pixels of it. A pixel is marked as invalid if all tracks around the pixel fail.

Constructor Summary

Constructors

Constructor and Description
DenseOpticalFlowKlt(PyramidKltTracker<I,D> tracker, int numLayers, int radius)

Method Summary

Modifier and Type	Method and Description
protected void	checkNeighbors(int cx, int cy, float score, float flowX, float flowY, ImageFlow output) Examines every pixel inside the region centered at (cx,cy) to see if their optical flow has a worse score the one specified in 'flow'
void	process(boofcv.struct.pyramid.ImagePyramid<I> prev, D[] prevDerivX, D[] prevDerivY, boofcv.struct.pyramid.ImagePyramid<I> curr, ImageFlow output)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DenseOpticalFlowKlt

public DenseOpticalFlowKlt(PyramidKltTracker<I,D> tracker,
                           int numLayers,
                           int radius)

Method Detail

process

public void process(boofcv.struct.pyramid.ImagePyramid<I> prev,
                    D[] prevDerivX,
                    D[] prevDerivY,
                    boofcv.struct.pyramid.ImagePyramid<I> curr,
                    ImageFlow output)

checkNeighbors

protected void checkNeighbors(int cx,
                              int cy,
                              float score,
                              float flowX,
                              float flowY,
                              ImageFlow output)

Examines every pixel inside the region centered at (cx,cy) to see if their optical flow has a worse score the one specified in 'flow'