Package boofcv.alg.feature.orientation.impl

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

java.lang.Object

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

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

All Implemented Interfaces:

OrientationIntegral<T>, RegionOrientation

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

Implementation of OrientationSlidingWindow for integral images. TODO comment how this implementation works

Field Summary

Fields

Modifier and Type	Field	Description
protected double[]	angles
protected int[]	order
protected double	windowSize

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

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

Constructor Summary

Constructors

Constructor	Description
ImplOrientationSlidingWindowIntegral(double radiusToScale, double samplePeriod, double windowSize, int sampleRadius, double weightSigma, int sampleKernelWidth, Class<T> integralType)	Specifies configuration parameters and initializes data structures

Method Summary

Modifier and Type	Method	Description
double	compute(double c_x, double c_y)	Computes the orientation of a region about its center.
RegionOrientation	copy()	Creates a copy which is functionally identical

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

getImageType, setImage, setObjectRadius

Methods inherited from class java.lang.Object

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

Field Details

windowSize

protected double windowSize

angles

protected double[] angles

order

protected int[] order

Constructor Details

ImplOrientationSlidingWindowIntegral

public ImplOrientationSlidingWindowIntegral(double radiusToScale,
 double samplePeriod,
 double windowSize,
 int sampleRadius,
 double weightSigma,
 int sampleKernelWidth,
 Class<T> integralType)

Specifies configuration parameters and initializes data structures

Parameters:

samplePeriod - How often the image is sampled. This number is scaled. Typically 1.

windowSize - Angular window that is slide across

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

weightSigma - Sigma for weighting distribution. Zero for unweighted.

sampleKernelWidth - Size of kernel doing the sampling. Typically 4.

integralType - Type of integral image being processed.

Method Details

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.

copy

public RegionOrientation copy()

Description copied from interface: RegionOrientation

Creates a copy which is functionally identical