Java Doc for SpectralHomomorphicDescriptor.java in  » 6.0-JDK-Modules » Java-Advanced-Imaging » ca » forklabs » media » jai » operator » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » Java Advanced Imaging » ca.forklabs.media.jai.operator 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


ca.forklabs.media.jai.CollectionDescriptor
   ca.forklabs.media.jai.operator.SpectralHomomorphicDescriptor

SpectralHomomorphicDescriptor
public class SpectralHomomorphicDescriptor extends CollectionDescriptor (Code)
Class SpectralHomomorphicDescriptor is an OperationDescriptor describing the spectralhomomorphic operation. This composite operation consists of these eight steps :
format -> addconst(+1) -> log -> fft -> filter -> ifft -> exp -> subtractconst(+1)
The SpectralHomomorphic operation takes two parameters, the filter and the data type for the format operation :
filter
This argument will provide the filter image to multiply to the Fourier transform.
data type
This argument is the type for the format operation. Data format can be found in enum FormatDataType . The default value is FormatDataType.FLOAT .

Here is a description of each step :

format
The format step change the type of the image pixel. Its behaviour can be controlled with the data type parameter.
addconst(+1)
This step adds one to each pixel so that when the log step is applied, there are no zero-valued pixels.
log
This step calculates the logarithm value of each pixel.
fft
This step calculates the Fourier Transform, using no scaling.
filter
The filter image will be generated and multiplied to the Fourier transform.
ifft
This step calculates the Inverse Fourier Transform, using the dimension scaling.
exp
This step calculates the exponential value of each pixel, it is the reverse of the log operation
subtractconst(+1)
This step subtracts one from each pixel value, it is the reverse of the addconst(+1) step.

Resource List
Name Value
GlobalName SpectralHomomorphic
LocalName SpectralHomomorphic
Vendor ca.umontreal.iro.image.arcticice
Description Spectral Homomorphic Filter
DocURL n/a
Version $Version$
Arg0Desct The spectral filter
Arg1Desct The data type for the format operation
Parameter List for the rendered and renderable modes
Name Class Type Default Value
filter SpectralFilter2D NO_PARAMETER_DEFAULT
type FormatDataType FormatDataType.FLOAT
Parameter List for the collection mode
Name Class Type Default Value
filter SpectralFilter3D NO_PARAMETER_DEFAULT
type FormatDataType FormatDataType.FLOAT

author:
   Daniel Léonard
version:
   $Revision: 1.2 $


Inner Class :protected static class SpectralHomomorphicParameterListDescriptor extends CollectionDescriptor.EmptyParameterListDescriptor

Field Summary
final public static  intFILTER_PARAMETER_INDEX
     The index in the parameter block of the filter parameter.
final public static  StringFILTER_PARAMETER_NAME
     The name of the filter parameter.
final public static  StringNAME
     The name of this operator.
final public static  intTYPE_PARAMETER_INDEX
     The index in the parameter block of the data type parameter.
final public static  StringTYPE_PARAMETER_NAME
     The name of the initial format type parameter.

Constructor Summary
public  SpectralHomomorphicDescriptor()
     Constructor.

Method Summary
public static  RenderedOpcreate(RenderedImage source, SpectralFilter2D filter, FormatDataType type, RenderingHints hints)
     Performs the spatial homomorphic filter operation on a rendered image.
Parameters:
  source - the image to enhance.
Parameters:
  filter - the filter.
Parameters:
  type - the data type for the initial format.
Parameters:
  hints - the rendering hints, may be null .
public static  CollectionImagecreateCollection(CollectionImage source, SpectralFilter3D filter, FormatDataType type, RenderingHints hints)
     Performs the spatial homomorphic filter operation on a rendered image.
Parameters:
  source - the image to enhance.
Parameters:
  filter - the filter.
Parameters:
  type - the data type for the initial format.
Parameters:
  hints - the rendering hints, may be null .
public static  ParameterBlockJAIcreateParameterBlock(String mode, Object source, SpectralFilter2D filter, FormatDataType type)
     Creates and fills a new parameter block.
Parameters:
  mode - the rendering mode (usually rendered or renderable).
Parameters:
  source - the source image.
Parameters:
  filter - the filter
Parameters:
  type - the data type for the format operation.
public static  ParameterBlockJAIcreateParameterBlock(String mode, Object source, SpectralFilter3D filter, FormatDataType type)
     Creates and fills a new parameter block.
Parameters:
  mode - the rendering mode (usually collection).
Parameters:
  source - the source image.
Parameters:
  filter - the filter
Parameters:
  type - the data type for the format operation.
public static  ParameterBlockJAIcreateParameterBlock(RenderedImage source, SpectralFilter2D filter, FormatDataType type)
     Creates and fills a new parameter block for the rendered mode.
Parameters:
  source - the source image.
Parameters:
  filter - the filter.
Parameters:
  type - the data type for the format operation.
public static  ParameterBlockJAIcreateParameterBlock(RenderableImage source, SpectralFilter2D filter, FormatDataType type)
     Creates and fills a new parameter block for the renderable mode.
Parameters:
  source - the source image.
Parameters:
  filter - the filter.
Parameters:
  type - the data type for the format operation.
public static  ParameterBlockJAIcreateParameterBlock(CollectionImage source, SpectralFilter3D filter, FormatDataType type)
     Creates and fills a new parameter block for the collection mode.
Parameters:
  source - the source image.
Parameters:
  filter - the filter.
Parameters:
  type - the data type for the format operation.
public static  RenderableOpcreateRenderable(RenderableImage source, SpectralFilter2D filter, FormatDataType type, RenderingHints hints)
     Performs the spatial homomorphic filter operation on a renderable image.
Parameters:
  source - the image to enhance.
Parameters:
  filter - the filter.
Parameters:
  type - the data type for the initial format.
Parameters:
  hints - the rendering hints, may be null .
protected static  StringgetArg0Description()
     Gets the description for the first argument, the spectral filter.
protected static  StringgetArg1Description()
     Gets the description for the second argument, the format data type.
protected static  StringgetDescription()
     Gets the description of this operation.

Field Detail
FILTER_PARAMETER_INDEX
final public static int FILTER_PARAMETER_INDEX(Code)
The index in the parameter block of the filter parameter.



FILTER_PARAMETER_NAME
final public static String FILTER_PARAMETER_NAME(Code)
The name of the filter parameter.



NAME
final public static String NAME(Code)
The name of this operator.



TYPE_PARAMETER_INDEX
final public static int TYPE_PARAMETER_INDEX(Code)
The index in the parameter block of the data type parameter.



TYPE_PARAMETER_NAME
final public static String TYPE_PARAMETER_NAME(Code)
The name of the initial format type parameter.




Constructor Detail
SpectralHomomorphicDescriptor
public SpectralHomomorphicDescriptor()(Code)
Constructor.




Method Detail
create
public static RenderedOp create(RenderedImage source, SpectralFilter2D filter, FormatDataType type, RenderingHints hints)(Code)
Performs the spatial homomorphic filter operation on a rendered image.
Parameters:
  source - the image to enhance.
Parameters:
  filter - the filter.
Parameters:
  type - the data type for the initial format.
Parameters:
  hints - the rendering hints, may be null . the rendered result image.



createCollection
public static CollectionImage createCollection(CollectionImage source, SpectralFilter3D filter, FormatDataType type, RenderingHints hints)(Code)
Performs the spatial homomorphic filter operation on a rendered image.
Parameters:
  source - the image to enhance.
Parameters:
  filter - the filter.
Parameters:
  type - the data type for the initial format.
Parameters:
  hints - the rendering hints, may be null . the rendered result image.



createParameterBlock
public static ParameterBlockJAI createParameterBlock(String mode, Object source, SpectralFilter2D filter, FormatDataType type)(Code)
Creates and fills a new parameter block.
Parameters:
  mode - the rendering mode (usually rendered or renderable).
Parameters:
  source - the source image.
Parameters:
  filter - the filter
Parameters:
  type - the data type for the format operation. a new parameter block.



createParameterBlock
public static ParameterBlockJAI createParameterBlock(String mode, Object source, SpectralFilter3D filter, FormatDataType type)(Code)
Creates and fills a new parameter block.
Parameters:
  mode - the rendering mode (usually collection).
Parameters:
  source - the source image.
Parameters:
  filter - the filter
Parameters:
  type - the data type for the format operation. a new parameter block.



createParameterBlock
public static ParameterBlockJAI createParameterBlock(RenderedImage source, SpectralFilter2D filter, FormatDataType type)(Code)
Creates and fills a new parameter block for the rendered mode.
Parameters:
  source - the source image.
Parameters:
  filter - the filter.
Parameters:
  type - the data type for the format operation. a new parameter block.



createParameterBlock
public static ParameterBlockJAI createParameterBlock(RenderableImage source, SpectralFilter2D filter, FormatDataType type)(Code)
Creates and fills a new parameter block for the renderable mode.
Parameters:
  source - the source image.
Parameters:
  filter - the filter.
Parameters:
  type - the data type for the format operation. a new parameter block.



createParameterBlock
public static ParameterBlockJAI createParameterBlock(CollectionImage source, SpectralFilter3D filter, FormatDataType type)(Code)
Creates and fills a new parameter block for the collection mode.
Parameters:
  source - the source image.
Parameters:
  filter - the filter.
Parameters:
  type - the data type for the format operation. a new parameter block.



createRenderable
public static RenderableOp createRenderable(RenderableImage source, SpectralFilter2D filter, FormatDataType type, RenderingHints hints)(Code)
Performs the spatial homomorphic filter operation on a renderable image.
Parameters:
  source - the image to enhance.
Parameters:
  filter - the filter.
Parameters:
  type - the data type for the initial format.
Parameters:
  hints - the rendering hints, may be null . the rendered result image.



getArg0Description
protected static String getArg0Description()(Code)
Gets the description for the first argument, the spectral filter. the description message.



getArg1Description
protected static String getArg1Description()(Code)
Gets the description for the second argument, the format data type. the description message.



getDescription
protected static String getDescription()(Code)
Gets the description of this operation. the description message.



Methods inherited from ca.forklabs.media.jai.CollectionDescriptor
protected String getNeitherCollectionNorRenderableCollectionModeErrorMessage(String mode)(Code)(Java Doc)
protected static String getNoEnumeratedParametersErrorMessage()(Code)(Java Doc)
protected String getNotAllRenderableErrorMessage()(Code)(Java Doc)
protected String getNotAllRenderedErrorMessage()(Code)(Java Doc)
protected static String getUnknownParameterErrorMessage(String name)(Code)(Java Doc)
protected boolean validateSources(String mode, ParameterBlock pb, StringBuffer sb)(Code)(Java Doc)

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