org.openimaj.image.processing.convolution

Class FSobelMagnitude

java.lang.Object

org.openimaj.image.processing.convolution.FSobelMagnitude

All Implemented Interfaces:

KernelProcessor<Float,FImage>, Processor<FImage>, SinglebandKernelProcessor<Float,FImage>

public class FSobelMagnitude
extends Object
implements SinglebandKernelProcessor<Float,FImage>

Apply the sobel operator to an image. This is achieved using a kernel convolution in the X and Y. The kernels are normalised 3x3 first derivatives of a gaussian of sigma 1.0f

Author:

Jonathon Hare (jsh2@ecs.soton.ac.uk), Sina Samangooei (ss@ecs.soton.ac.uk)

Nested Class Summary

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

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

Field Summary

Fields

Modifier and Type	Field and Description
static FImage	KERNEL_X The 3x3 derivative of a gaussian of sigma 1 in the x direction
static FImage	KERNEL_Y The 3x3 derivative of a gaussian of sigma 1 in the x direction

Constructor Summary

Constructors

Constructor and Description
FSobelMagnitude()

Method Summary

Modifier and Type	Method and Description
int	getKernelHeight() Get the height of the kernel required by this processor.
int	getKernelWidth() Get the width of the kernel required by this processor.
Float	processKernel(FImage patch) Process the patch with this kernel processor and return a value that will be used to build the convolved image.

Methods inherited from class java.lang.Object

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

Field Detail

KERNEL_X

public static final FImage KERNEL_X

The 3x3 derivative of a gaussian of sigma 1 in the x direction

KERNEL_Y

public static final FImage KERNEL_Y

The 3x3 derivative of a gaussian of sigma 1 in the x direction

Constructor Detail

FSobelMagnitude

public FSobelMagnitude()

Method Detail

getKernelHeight

public int getKernelHeight()

Description copied from interface: KernelProcessor

Get the height of the kernel required by this processor.

Specified by:

getKernelHeight in interface KernelProcessor<Float,FImage>

Returns:

The height of the kernel required by this processor

getKernelWidth

public int getKernelWidth()

Description copied from interface: KernelProcessor

Get the width of the kernel required by this processor.

Specified by:

getKernelWidth in interface KernelProcessor<Float,FImage>

Returns:

The width of the kernel required by this processor.

processKernel

public Float processKernel(FImage patch)

Description copied from interface: KernelProcessor

Process the patch with this kernel processor and return a value that will be used to build the convolved image.

Specified by:

processKernel in interface KernelProcessor<Float,FImage>

Parameters:

patch - The patch of pixels from the image to process

Returns:

A value to place in the final convolved image.