boofcv.alg.tracker.meanshift

Class LocalWeightedHistogramRotRect<T extends ImageBase>

java.lang.Object

boofcv.alg.tracker.meanshift.LocalWeightedHistogramRotRect<T>

public class LocalWeightedHistogramRotRect<T extends ImageBase>
extends java.lang.Object

Computes a local histogram weighted using a Gaussian function. The weighting function is shaped using a rotated rectangle, where the sigma along each axis is set by the rectangle's width and height. For use with TrackerMeanShiftComaniciu2003. The histogram is stored in a row major format.

Field Summary

Fields

Modifier and Type	Field and Description
float	imageX
float	imageY

Constructor Summary

Constructors

Constructor and Description
LocalWeightedHistogramRotRect(int numSamples, double numSigmas, int numHistogramBins, int numBands, float maxPixelValue, InterpolatePixelMB<T> interpolate) Configures histogram calculation.

Method Summary

Modifier and Type	Method and Description
void	computeHistogram(T image, RectangleRotate_F32 region) Computes the histogram inside the specified region.
float[]	getHistogram()
int[]	getSampleHistIndex()
java.util.List<Point2D_F32>	getSamplePts()

Methods inherited from class java.lang.Object

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

Field Detail

imageX

public float imageX

imageY

public float imageY

Constructor Detail

LocalWeightedHistogramRotRect

public LocalWeightedHistogramRotRect(int numSamples,
                                     double numSigmas,
                                     int numHistogramBins,
                                     int numBands,
                                     float maxPixelValue,
                                     InterpolatePixelMB<T> interpolate)

Configures histogram calculation.

Parameters:

numSamples - Number of points it samples along each axis of the rectangle.

numSigmas - Number of standard deviations away the sides will be from the center. Try 3

numHistogramBins - Number of bins in the histogram

numBands - Number of bands in the input image

maxPixelValue - Maximum value of a pixel across all bands

interpolate - Function used to interpolate the image

Method Detail

computeHistogram

public void computeHistogram(T image,
                             RectangleRotate_F32 region)

Computes the histogram inside the specified region. Results are returned by calling getHistogram().

Parameters:

image - Input image

region - Region which is to be sampled

getHistogram

public float[] getHistogram()

getSampleHistIndex

public int[] getSampleHistIndex()

getSamplePts

public java.util.List<Point2D_F32> getSamplePts()