Package boofcv.alg.feature.orientation.impl

Class ImplOrientationImageAverageIntegral<T extends ImageGray<T>,G extends GradientValue>

java.lang.Object

boofcv.alg.feature.orientation.OrientationIntegralBase<T,G>

boofcv.alg.feature.orientation.impl.ImplOrientationImageAverageIntegral<T,G>

All Implemented Interfaces:

OrientationIntegral<T>, RegionOrientation

public class ImplOrientationImageAverageIntegral<T extends ImageGray<T>,G extends GradientValue>
extends OrientationIntegralBase<T,G>

Estimates the orientation of a region using a "derivative free" method. Points are sampled using an integral image.

Field Summary

Fields

Modifier and Type	Field	Description
protected Kernel2D_F64	kerCosine
protected Kernel2D_F64	kerSine

Fields inherited from class boofcv.alg.feature.orientation.OrientationIntegralBase

g, ii, kernelWidth, objectRadiusToScale, period, sampleRadius, sampleWidth, scale, weights, weightSigma

Constructor Summary

Constructors

Constructor	Description
ImplOrientationImageAverageIntegral(double radiusToScale, int sampleRadius, double period, int kernelWidth, double weightSigma, Class<T> imageType)

Method Summary

Modifier and Type	Method	Description
double	compute(double c_x, double c_y)	Computes the orientation of a region about its center.
protected double	computeUnweighted(double tl_x, double tl_y, double samplePeriod)
protected double	computeWeighted(double tl_x, double tl_y, double samplePeriod)
RegionOrientation	copy()	Creates a copy which is functionally identical
void	setImage(T integralImage)	Specifies input image data for estimating orientation.
void	setObjectRadius(double radius)	Specifies the circle's radius that the orientation should be

Methods inherited from class boofcv.alg.feature.orientation.OrientationIntegralBase

getImageType

Methods inherited from class java.lang.Object

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

Field Details

kerCosine

protected Kernel2D_F64 kerCosine

kerSine

protected Kernel2D_F64 kerSine

Constructor Details

ImplOrientationImageAverageIntegral

public ImplOrientationImageAverageIntegral(double radiusToScale,
 int sampleRadius,
 double period,
 int kernelWidth,
 double weightSigma,
 Class<T> imageType)

Parameters:

sampleRadius - Radius of the region being considered in terms of Wavelet samples. Typically 6.

weightSigma - Sigma for weighting distribution. Zero for unweighted.

Method Details

setImage

public void setImage(T integralImage)

Description copied from interface: OrientationIntegral

Specifies input image data for estimating orientation.

Specified by:

setImage in interface OrientationIntegral<T extends ImageGray<T>>

Overrides:

setImage in class OrientationIntegralBase<T extends ImageGray<T>,G extends GradientValue>

Parameters:

integralImage - Input image transformed into an integral image.

setObjectRadius

public void setObjectRadius(double radius)

Description copied from interface: RegionOrientation

Specifies the circle's radius that the orientation should be

Specified by:

setObjectRadius in interface RegionOrientation

Overrides:

setObjectRadius in class OrientationIntegralBase<T extends ImageGray<T>,G extends GradientValue>

Parameters:

radius - Object's radius.

compute

public double compute(double c_x,
 double c_y)

Description copied from interface: RegionOrientation

Computes the orientation of a region about its center.

Parameters:

c_x - Center of the region in image pixels.

c_y - Center of the region in image pixels.

Returns:

Orientation in radians. Angle zero points along x-axis and pi/2 along y-axis.

computeUnweighted

protected double computeUnweighted(double tl_x,
 double tl_y,
 double samplePeriod)

computeWeighted

protected double computeWeighted(double tl_x,
 double tl_y,
 double samplePeriod)

copy

public RegionOrientation copy()

Description copied from interface: RegionOrientation

Creates a copy which is functionally identical