org.openimaj.image.processing.convolution

Class FConvolution

java.lang.Object

org.openimaj.image.processing.convolution.FConvolution

All Implemented Interfaces:

ImageProcessor<FImage>, Processor<FImage>, SinglebandImageProcessor<Float,FImage>

Direct Known Subclasses:

CompassOperators.Compass0, CompassOperators.Compass135, CompassOperators.Compass45, CompassOperators.Compass90, Disk, FSobelX, FSobelY, Gaussian2D, Laplacian3x3, LaplacianOfGaussian2D

public class FConvolution
extends Object
implements SinglebandImageProcessor<Float,FImage>

Base class for implementation of classes that perform convolution operations on FImages as a @link{SinglebandImageProcessor}, with the kernel itself formed from and @link{FImage}.

Author:

Jonathon Hare (jsh2@ecs.soton.ac.uk)

Nested Class Summary

Nested classes/interfaces inherited from interface org.openimaj.image.processor.SinglebandImageProcessor

SinglebandImageProcessor.Processable<T,S extends Image<T,S>,I extends Image<?,I>>

Field Summary

Fields

Modifier and Type	Field and Description
FImage	kernel The kernel

Constructor Summary

Constructors

Constructor and Description
FConvolution(FImage kernel) Construct the convolution operator with the given kernel
FConvolution(float[][] kernel) Construct the convolution operator with the given kernel

Method Summary

Modifier and Type	Method and Description
void	processImage(FImage image) Process an image.
float	responseAt(int x, int y, FImage image) Return the kernel response at the x,y in the given image.
void	setBruteForce(boolean brute) Set brute-force convolution; disables kernel separation and other optimisations.

Methods inherited from class java.lang.Object

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

Field Detail

kernel

public FImage kernel

The kernel

Constructor Detail

FConvolution

public FConvolution(FImage kernel)

Construct the convolution operator with the given kernel

Parameters:

kernel - the kernel

FConvolution

public FConvolution(float[][] kernel)

Construct the convolution operator with the given kernel

Parameters:

kernel - the kernel

Method Detail

setBruteForce

public void setBruteForce(boolean brute)

Set brute-force convolution; disables kernel separation and other optimisations.

Parameters:

brute -

processImage

public void processImage(FImage image)

Description copied from interface: ImageProcessor

Process an image. Implementing classes must alter the image passed in-place or assign the output to the input using Image.internalAssign(Image).

Specified by:

processImage in interface ImageProcessor<FImage>

Parameters:

image - The image to process in place.

responseAt

public float responseAt(int x,
                        int y,
                        FImage image)

Return the kernel response at the x,y in the given image. This method will throw an array index out of bounds if x,y requests pixels outside the image bounds

Parameters:

x -

y -

image -

Returns:

the kernel response at the given coordinates