boofcv.alg.feature.orientation.impl

Class ImplOrientationSlidingWindowIntegral<T extends ImageSingleBand,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 ImageSingleBand,G extends GradientValue>
extends OrientationIntegralBase<T,G>

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

Author:

Peter Abeles

Field Summary

Fields

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

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

g, ii, period, radius, sampleWidth, scale, weights, width

Constructor Summary

Constructors

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

Method Summary

Methods

Modifier and Type	Method and Description
double	compute(double c_x, double c_y) Computes the orientation of a region about its center.

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

getImageType, setImage, setScale

Methods inherited from class java.lang.Object

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

Field Detail

windowSize

protected double windowSize

angles

protected double[] angles

order

protected int[] order

Constructor Detail

ImplOrientationSlidingWindowIntegral

public ImplOrientationSlidingWindowIntegral(double samplePeriod,
                                    double windowSize,
                                    int radius,
                                    double weightSigma,
                                    int sampleKernelWidth,
                                    java.lang.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

radius - 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 Detail

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.