de.lmu.ifi.dbs.jfeaturelib.utils

Class DerivativeImage

java.lang.Object

de.lmu.ifi.dbs.jfeaturelib.utils.DerivativeImage

public class DerivativeImage
extends Object

Calculates the standard derivatives Dx and Dy of an image using a -1,0,1 kernel and stores the results in separate ImageProcessors. The kernel can be modified by the according setter methods. Gradient lenghts and orientations can be obtained easily by using GradientImage.

Author:

graf

See Also:

GradientImage

Constructor Summary

Constructors

Constructor and Description
DerivativeImage()
DerivativeImage(ij.process.ImageProcessor ip)

Method Summary

Methods

Modifier and Type	Method and Description
ij.process.ImageProcessor	getIpX()
ij.process.ImageProcessor	getIpY()
float[]	getKernelX()
float[]	getKernelY() Sets a new kernel for the derivation in y direction.
void	setIp(ij.process.ImageProcessor ip)
void	setKernelX(float[] kernelX) Sets a new kernel for the derivation in x direction.
void	setKernelY(float[] kernelY)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

DerivativeImage

public DerivativeImage()

DerivativeImage

public DerivativeImage(ij.process.ImageProcessor ip)

Method Detail

setIp

public void setIp(ij.process.ImageProcessor ip)

toString

public String toString()

Overrides:

toString in class Object

getKernelX

public float[] getKernelX()

setKernelX

public void setKernelX(float[] kernelX)

Sets a new kernel for the derivation in x direction. Keep in mind that just setting the kernel does NOT recompute the result.

Parameters:

kernelX -

getKernelY

public float[] getKernelY()

Sets a new kernel for the derivation in y direction. Keep in mind that just setting the kernel does NOT recompute the result.

Returns:

kernelY

setKernelY

public void setKernelY(float[] kernelY)

getIpX

public ij.process.ImageProcessor getIpX()

Returns:

reference to Dx

getIpY

public ij.process.ImageProcessor getIpY()

Returns:

reference to Dy