edu.stanford.rsl.conrad.filtering.rampfilters

Class RampFilter

java.lang.Object

edu.stanford.rsl.conrad.filtering.rampfilters.RampFilter

All Implemented Interfaces:

GUIConfigurable, SafeSerializable, java.io.Serializable, java.lang.Cloneable

Direct Known Subclasses:

ArbitraryRampFilter, CosineRampFilter, HammingRampFilter, HanningRampFilter, RamLakRampFilter, SheppLoganRampFilter

public abstract class RampFilter
extends java.lang.Object
implements java.lang.Cloneable, SafeSerializable, GUIConfigurable

Class to create Ramp Filters as described in Kak and Slaney 1988 (pp. 72) This class is the blue print for an arbitrary Ram Lak Filter. Subclasses implement different filterings.

Author:

Andreas Maier

See Also:

"RamLakRampFilter for an implementation without filtering", "SheppLoganRampFilter, CosineRampFilter, HanningRampFilter, HammingRampFilter for different implementations of filters", Serialized Form

Constructor Summary

Constructors

Constructor and Description
RampFilter()

Method Summary

Methods

Modifier and Type	Method and Description
abstract RampFilter	clone()
void	configure() Configures the object before execution
static RampFilter[]	getAvailableRamps()
double	getCutOffFrequency()
abstract double	getFilterWeight(double ku)
ij.ImagePlus	getImagePlusFromRampFilter(int width) Creates an ImagePlus to display the filter
double	getPhysicalPixelWidthInMilimeters()
ij.process.FloatProcessor	getRampFilter(int width) Method to generate a filter for in Fourier space given the width of the image to filter
double[]	getRampFilter1D(int width) Returns the filter for one detector row as complex double array (JTransforms format)
abstract java.lang.String	getRampName()
double	getSourceToAxisDistance()
double	getSourceToDetectorDistance()
boolean	isConfigured() Is true if the object was successfully configured
void	prepareForSerialization() Sets all data objects in the serialized object to null which do not implement the Serializable interface.
void	setConfiguration(Configuration config)
void	setCutOffFrequency(double cutOffFrequency)
void	setPhysicalPixelWidthInMilimeters(double detectorWidth)
void	setSourceToAxisDistance(double sourceToAxisDistance)
void	setSourceToDetectorDistance(double sourceToDetectorDistance)
java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

RampFilter

public RampFilter()

Method Detail

setConfiguration

public void setConfiguration(Configuration config)

getSourceToDetectorDistance

public double getSourceToDetectorDistance()

setSourceToDetectorDistance

public void setSourceToDetectorDistance(double sourceToDetectorDistance)

getSourceToAxisDistance

public double getSourceToAxisDistance()

setSourceToAxisDistance

public void setSourceToAxisDistance(double sourceToAxisDistance)

getCutOffFrequency

public double getCutOffFrequency()

setCutOffFrequency

public void setCutOffFrequency(double cutOffFrequency)

getPhysicalPixelWidthInMilimeters

public double getPhysicalPixelWidthInMilimeters()

setPhysicalPixelWidthInMilimeters

public void setPhysicalPixelWidthInMilimeters(double detectorWidth)

getRampName

public abstract java.lang.String getRampName()

getRampFilter1D

public double[] getRampFilter1D(int width)

Returns the filter for one detector row as complex double array (JTransforms format)

Parameters:

width - the width of the detector row

Returns:

the filter in Fourier domain

getImagePlusFromRampFilter

public ij.ImagePlus getImagePlusFromRampFilter(int width)

Creates an ImagePlus to display the filter

Parameters:

width - width of the image

Returns:

the ImagePlus

getRampFilter

public ij.process.FloatProcessor getRampFilter(int width)

Method to generate a filter for in Fourier space given the width of the image to filter

Parameters:

width - the width of the input image

Returns:

the filter as ImageProcessor

getFilterWeight

public abstract double getFilterWeight(double ku)

clone

public abstract RampFilter clone()

Overrides:

clone in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getAvailableRamps

public static RampFilter[] getAvailableRamps()

isConfigured

public boolean isConfigured()

Description copied from interface: GUIConfigurable

Is true if the object was successfully configured

Specified by:

isConfigured in interface GUIConfigurable

Returns:

configured?

configure

public void configure()
               throws java.lang.Exception

Description copied from interface: GUIConfigurable

Configures the object before execution

Specified by:

configure in interface GUIConfigurable

Throws:

java.lang.Exception - may happen

prepareForSerialization

public void prepareForSerialization()

Description copied from interface: SafeSerializable

Sets all data objects in the serialized object to null which do not implement the Serializable interface. It can also be used to save space in the serialized form. Configuration parameters are preserved. Processing data is discarded.

Specified by:

prepareForSerialization in interface SafeSerializable