imagingbook.pub.edgepreservingfilters

Class BilateralFilter

java.lang.Object

imagingbook.lib.filters.GenericFilter

imagingbook.pub.edgepreservingfilters.BilateralFilter

Direct Known Subclasses:

BilateralFilterSeparable

public class BilateralFilter
extends GenericFilter

This class implements a bilateral filter as proposed in C. Tomasi and R. Manduchi, "Bilateral Filtering for Gray and Color Images", Proceedings of the 1998 IEEE International Conference on Computer Vision, Bombay, India. The filter uses Gaussian domain and range kernels and can be applied to all image types.

Version:

2013/05/30

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BilateralFilter.Parameters

Field Summary

Fields

Modifier and Type	Field and Description
protected VectorNorm	colorNorm
protected double	colorScale
protected int	K
protected BilateralFilter.Parameters	params
protected float[]	rgb
protected double	sigmaR2

Constructor Summary

Constructors

Constructor and Description
BilateralFilter()
BilateralFilter(BilateralFilter.Parameters params)
BilateralFilter(double sigmaD, double sigmaR)

Method Summary

Modifier and Type	Method and Description
float[]	filterPixel(ImageAccessor.Rgb I, int u, int v) Calculates and returns the filter result for a single pixel at the given position.
float	filterPixel(ImageAccessor.Scalar I, int u, int v) Calculates and returns the filter result for a single pixel at the given position.
protected float[][]	makeDomainKernel2D(double sigma, int K)
protected float[]	makeRangeKernel(double sigma, int K)
protected float	similarityGauss(float[] a, float[] b)
protected float	similarityGauss(float a, float b)

Methods inherited from class imagingbook.lib.filters.GenericFilter

applyTo, setOutOfBoundsStrategy

Methods inherited from class java.lang.Object

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

Field Detail

params

protected final BilateralFilter.Parameters params

K

protected final int K

rgb

protected final float[] rgb

sigmaR2

protected final double sigmaR2

colorNorm

protected final VectorNorm colorNorm

colorScale

protected final double colorScale

Constructor Detail

BilateralFilter

public BilateralFilter()

BilateralFilter

public BilateralFilter(double sigmaD,
                       double sigmaR)

BilateralFilter

public BilateralFilter(BilateralFilter.Parameters params)

Method Detail

filterPixel

public float filterPixel(ImageAccessor.Scalar I,
                         int u,
                         int v)

Description copied from class: GenericFilter

Calculates and returns the filter result for a single pixel at the given position.

Specified by:

filterPixel in class GenericFilter

Parameters:

I - the ImageAccessor.Scalar representing the source (scalar-valued) image

u - the horizontal pixel position

v - the vertical pixel position

Returns:

the resulting (scalar) filter value for the specified pixel position

filterPixel

public float[] filterPixel(ImageAccessor.Rgb I,
                           int u,
                           int v)

Description copied from class: GenericFilter

Calculates and returns the filter result for a single pixel at the given position.

Specified by:

filterPixel in class GenericFilter

Parameters:

I - the ImageAccessor.Rgb representing the source (RGB) image

u - the horizontal pixel position

v - the vertical pixel position

Returns:

the resulting (RGB) filter value for the specified pixel position

similarityGauss

protected float similarityGauss(float a,
                                float b)

similarityGauss

protected float similarityGauss(float[] a,
                                float[] b)

makeDomainKernel2D

protected float[][] makeDomainKernel2D(double sigma,
                                       int K)

makeRangeKernel

protected float[] makeRangeKernel(double sigma,
                                  int K)