Package adams.data.jai.features

Class DFT

java.lang.Object

adams.core.logging.LoggingObject

adams.core.logging.CustomLoggingLevelObject

adams.core.option.AbstractOptionHandler

adams.data.image.AbstractImageFeatureGenerator<BufferedImageContainer>

adams.data.image.features.AbstractBufferedImageFeatureGenerator

adams.data.jai.features.DFT

All Implemented Interfaces:

CleanUpHandler, Destroyable, GlobalInfoSupporter, LoggingLevelHandler, LoggingSupporter, OptionHandler, ShallowCopySupporter<AbstractImageFeatureGenerator>, SizeOfHandler, Serializable, Comparable

public class DFT
extends AbstractBufferedImageFeatureGenerator

Performs discrete fourier transform (DFT).

-logging-level <OFF|SEVERE|WARNING|INFO|CONFIG|FINE|FINER|FINEST> (property: loggingLevel)
    The logging level for outputting errors and debugging output.
    default: WARNING
 

-field <adams.data.report.Field> [-field ...] (property: fields)
    The fields to add to the output.
    default: 
 

-notes <adams.core.base.BaseString> [-notes ...] (property: notes)
    The notes to add as attributes to the generated data, eg 'PROCESS INFORMATION'
    .
    default: 
 

-output-type <REAL|IMAGINARY|BOTH> (property: outputType)
    The type of output to generate.
    default: BOTH
 

Version:

$Revision$

Author:

fracpete (fracpete at waikato dot ac dot nz), Dale (dale at cs dot waikato dot ac dot nz)

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DFT.OutputType	Determines how to output the data.

Field Summary

Fields

Modifier and Type	Field	Description
protected DFT.OutputType	m_OutputType	the output type.

Fields inherited from class adams.data.image.AbstractImageFeatureGenerator

m_Converter, m_Fields, m_Notes, m_Prefix

Fields inherited from class adams.core.option.AbstractOptionHandler

m_OptionManager

Fields inherited from class adams.core.logging.LoggingObject

m_Logger, m_LoggingIsEnabled, m_LoggingLevel

Constructor Summary

Constructors

Constructor	Description
DFT()

Method Summary

Modifier and Type	Method	Description
HeaderDefinition	createHeader(BufferedImageContainer img)	Creates the header from a template image.
void	defineOptions()	Adds options to the internal list of options.
List<Object>[]	generateRows(BufferedImageContainer img)	Performs the actual feature generation.
DFT.OutputType	getOutputType()	Returns the type of output to generate.
String	globalInfo()	Returns a string describing the object.
String	outputTypeTipText()	Returns the tip text for this property.
protected double[]	performDFT(BufferedImageContainer img)	Performs DFT on the image.
void	setOutputType(DFT.OutputType value)	Sets the type of output to generate.

Methods inherited from class adams.data.image.AbstractImageFeatureGenerator

checkData, cleanUp, compareTo, converterTipText, destroy, equals, fieldsTipText, generate, getConverter, getDatasetFormat, getFields, getNotes, getPrefix, getRowFormat, notesTipText, postProcessHeader, postProcessRow, postProcessRows, prefixTipText, reset, setConverter, setFields, setNotes, setPrefix, shallowCopy, shallowCopy

Methods inherited from class adams.core.option.AbstractOptionHandler

cleanUpOptions, finishInit, getDefaultLoggingLevel, getOptionManager, initialize, loggingLevelTipText, newOptionManager, setLoggingLevel, toCommandLine, toString

Methods inherited from class adams.core.logging.LoggingObject

configureLogger, getLogger, getLoggingLevel, initializeLogging, isLoggingEnabled, sizeOf

Methods inherited from class java.lang.Object

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

Methods inherited from interface adams.core.logging.LoggingLevelHandler

getLoggingLevel

Field Detail

m_OutputType

protected DFT.OutputType m_OutputType

the output type.

Constructor Detail

DFT

public DFT()

Method Detail

globalInfo

public String globalInfo()

Returns a string describing the object.

Specified by:

globalInfo in interface GlobalInfoSupporter

Specified by:

globalInfo in class AbstractOptionHandler

Returns:

a description suitable for displaying in the gui

defineOptions

public void defineOptions()

Adds options to the internal list of options.

Specified by:

defineOptions in interface OptionHandler

Overrides:

defineOptions in class AbstractImageFeatureGenerator<BufferedImageContainer>

setOutputType

public void setOutputType(DFT.OutputType value)

Sets the type of output to generate.

Parameters:

value - the type

getOutputType

public DFT.OutputType getOutputType()

Returns the type of output to generate.

Returns:

the type

outputTypeTipText

public String outputTypeTipText()

Returns the tip text for this property.

Returns:

tip text for this property suitable for displaying in the GUI or for listing the options.

createHeader

public HeaderDefinition createHeader(BufferedImageContainer img)

Creates the header from a template image.

Specified by:

createHeader in class AbstractImageFeatureGenerator<BufferedImageContainer>

Parameters:

img - the image to act as a template

Returns:

the generated header

performDFT

protected double[] performDFT(BufferedImageContainer img)

Performs DFT on the image.

Parameters:

img - the image to process

Returns:

the generated data (real/imag pairs)

generateRows

public List<Object>[] generateRows(BufferedImageContainer img)

Performs the actual feature generation.

Specified by:

generateRows in class AbstractImageFeatureGenerator<BufferedImageContainer>

Parameters:

img - the image to process

Returns:

the generated features