Module org.scijava.ops.image

Package org.scijava.ops.image.features.hog

Class HistogramOfOrientedGradients2D<T extends RealType<T>>

java.lang.Object

org.scijava.ops.image.features.hog.HistogramOfOrientedGradients2D<T>

All Implemented Interfaces:

Computers.Arity3<RandomAccessibleInterval<T>,Integer,Integer,RandomAccessibleInterval<T>>, Consumers.Arity4<RandomAccessibleInterval<T>,Integer,Integer,RandomAccessibleInterval<T>>

public class HistogramOfOrientedGradients2D<T extends RealType<T>>
extends Object
implements Computers.Arity3<RandomAccessibleInterval<T>,Integer,Integer,RandomAccessibleInterval<T>>

Calculates a histogram of oriented gradients which is a feature descriptor. The technique first calculates the partial derivatives and then for each pixel a histogram of gradient directions by summing up the magnitudes of the neighbored (@param spanOfNeighborhood) pixels. The directions are divided in (@param numOrientations) bins. The output is 3d: for each bin an own channel. Input can be either a 2D image or a 3D image where the third dimension is interpreted as color channel (e.g. RGB, LAB, ...). The algorithm is based on the paper "Histograms of Oriented Gradients for Human Detection" by Navneet Dalal and Bill Triggs, published 2005.

Author:

Simon Schmid (University of Konstanz)

Implementation Note:

op names='features.hog'

Constructor Summary

Constructors

Constructor	Description
HistogramOfOrientedGradients2D()

Method Summary

Modifier and Type	Method	Description
void	compute(RandomAccessibleInterval<T> in, Integer numOrientations, Integer spanOfNeighborhood, RandomAccessibleInterval<T> out)	TODO

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.scijava.function.Computers.Arity3

accept

Methods inherited from interface org.scijava.function.Consumers.Arity4

andThen

Constructor Detail

HistogramOfOrientedGradients2D

public HistogramOfOrientedGradients2D()

Method Detail

compute

public void compute(RandomAccessibleInterval<T> in,
                    Integer numOrientations,
                    Integer spanOfNeighborhood,
                    RandomAccessibleInterval<T> out)

TODO

Specified by:

compute in interface Computers.Arity3<RandomAccessibleInterval<T extends RealType<T>>,Integer,Integer,RandomAccessibleInterval<T extends RealType<T>>>

Parameters:

in -

numOrientations -

spanOfNeighborhood -

out -