latest version v1.9 - last update 24 Nov 2005

lti::regionGrowing::parameters Class Reference

The parameters for the class regionGrowing. More...

#include <ltiRegionGrowing.h>

Inheritance diagram for lti::regionGrowing::parameters:

[legend]Collaboration diagram for lti::regionGrowing::parameters:

[legend]List of all members.

Public Types
enum	eMode { UseGivenThresholds, GetThresholdsRelative, GetThresholdsAbsolute }
enum	eBackgroundType { Dark, Medium, Light }
Public Member Functions
	parameters ()
	parameters (const parameters &other)
	~parameters ()
const char *	getTypeName () const
parameters &	copy (const parameters &other)
virtual functor::parameters *	clone () const
virtual bool	write (ioHandler &handler, const bool complete=true) const
virtual bool	read (ioHandler &handler, const bool complete=true)
Public Attributes
eBackgroundType	backgroundType
bool	useGaussKernel
int	localStatisticsKernelSize
double	localStatisticsKernelVariance
int	smoothingKernelSize
float	smoothingThreshold
trectangle< float >	patchPosition
eMode	mode
int	scaleFactor
float	averageThreshold
trgbPixel< float >	averageThresholds
float	edgesThreshold
vector< tpoint< float > >	seedPoints

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Detailed Description

The parameters for the class regionGrowing.

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Member Enumeration Documentation

enum lti::regionGrowing::parameters::eBackgroundType

Types of "lightness" for the background. Enumerator: Dark  The background has only dark colors Medium  The background has colors with medium intensity Light  The background is white

enum lti::regionGrowing::parameters::eMode

Types for the region growing modi. Enumerator: UseGivenThresholds  Use the thresholds specified in the parameters GetThresholdsRelative  Use the relative patchPosition to obtain the threshold values GetThresholdsAbsolute  Use the absolute patchPosition to obtain the threshold values

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Constructor & Destructor Documentation

lti::regionGrowing::parameters::parameters (   )

Default constructor. Reimplemented from lti::segmentation::parameters.

lti::regionGrowing::parameters::parameters (  const parameters &  other  )

Copy constructor. Parameters: other  the parameters object to be copied

lti::regionGrowing::parameters::~parameters (   )  [virtual]

Destructor. Reimplemented from lti::segmentation::parameters.

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Member Function Documentation

virtual functor::parameters* lti::regionGrowing::parameters::clone (   )  const [virtual]

Returns a pointer to a clone of the parameters. Reimplemented from lti::segmentation::parameters.

parameters& lti::regionGrowing::parameters::copy (  const parameters &  other  )

Copy the contents of a parameters object. Parameters: other  the parameters object to be copied Returns: a reference to this parameters object

const char* lti::regionGrowing::parameters::getTypeName (   )  const [virtual]

Returns name of this type. Reimplemented from lti::segmentation::parameters.

virtual bool lti::regionGrowing::parameters::read (  ioHandler &  handler, const bool  complete = true )  [virtual]

Write the parameters in the given ioHandler. Parameters: handler  the ioHandler to be used complete  if true (the default) the enclosing begin/end will be also written, otherwise only the data block will be written. Returns: true if write was successful Reimplemented from lti::segmentation::parameters.

virtual bool lti::regionGrowing::parameters::write (  ioHandler &  handler, const bool  complete = true )  const [virtual]

Write the parameters in the given ioHandler. Parameters: handler  the ioHandler to be used complete  if true (the default) the enclosing begin/end will be also written, otherwise only the data block will be written. Returns: true if write was successful Reimplemented from lti::segmentation::parameters.

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Member Data Documentation

float lti::regionGrowing::parameters::averageThreshold

Used by the UseGivenThresholds-mode for the segmentation of a channel or channel8. This value MUST be between 0.0 and 1.0 (The channel8 values will be divided by 255 before the comparitions)

trgbPixel<float> lti::regionGrowing::parameters::averageThresholds

Used by the UseGivenThresholds-mode for the segmentation of a color image. Each component value must be between 0.0 and 1.0

eBackgroundType lti::regionGrowing::parameters::backgroundType

Type (brightness) of the background. The default value is "Dark".

float lti::regionGrowing::parameters::edgesThreshold

Used by the UseGivenThresholds-mode for the segmentation of a channel or channel8. This value must be between 0.0 and 1.0. (The channel8 values will be divided by 255 before the comparitions)

int lti::regionGrowing::parameters::localStatisticsKernelSize

Size of the filter kernel used to specify a local region. The default value is 5

double lti::regionGrowing::parameters::localStatisticsKernelVariance

Variance of the filter kernel used to specify a local region (used only if useGaussKernel is true). The default value is "-1", which meaning is described in gaussKernel

eMode lti::regionGrowing::parameters::mode

Specify how to obtain the threshold values to considered a pixel similar to the seed or not.

trectangle<float> lti::regionGrowing::parameters::patchPosition

Specify the position in the image or channel, where the values for the "background" can be taken. If the mode is GetThresholdsRelative, the values of the coordinates must be between 0.0 and 1.0. The absolute coordinates will be calculated multiplying this values with the size of the image to be segmented. If the mode is GetThresholdsAbsolute, this parameters should contain the absolute coordinates for the background patch.

int lti::regionGrowing::parameters::scaleFactor

The scale factor allows a faster calculation for the segmentation mask, but with a lower boundary detection accuracy.

vector< tpoint<float> > lti::regionGrowing::parameters::seedPoints

A list with the relative positions for the starting seed points can be specified here. The valid values for each coordinate are between 0.0f and 1.0f. The default values are the four corners (i.e. (0,0),(0,1),(1,0),(1,1) )

int lti::regionGrowing::parameters::smoothingKernelSize

Size of a gaussian kernel used to low-pass-filter the final segmentated mask.

float lti::regionGrowing::parameters::smoothingThreshold

Smoothing threshold. After the first segmentation, all pixels will be assigned to the background or the object. The smoothing filter will generate at the borders of the objects values between 0 (background) and 1 (object). This value will determine which values will be considered as object. The default value is 0.6

bool lti::regionGrowing::parameters::useGaussKernel

If this variable is "true", the local region will be specified by a gassian filter with the given (local region) size and variance. If "false", a rectangular filter will be used. The default value is "false"

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The documentation for this class was generated from the following file:

• ltiRegionGrowing.h

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