eVision.Segmenters.EGrayscaleSingleThresholdSegmenter Class Reference

Segments an image using a single threshold on a grayscale image. More...

Inheritance diagram for eVision.Segmenters.EGrayscaleSingleThresholdSegmenter:

Collaboration diagram for eVision.Segmenters.EGrayscaleSingleThresholdSegmenter:

Public Member Functions
new void	Load (string path)
	Load the EGrayscaleSingleThresholdSegmenter configuration. The given ESerializer must have been created for reading.
new void	Load (eVision.ESerializer serializer)
	Load the EGrayscaleSingleThresholdSegmenter configuration. The given ESerializer must have been created for reading.
new void	Save (string path)
	Save the EGrayscaleSingleThresholdSegmenter configuration. The given ESerializer must have been created for writing.
new void	Save (eVision.ESerializer serializer)
	Save the EGrayscaleSingleThresholdSegmenter configuration. The given ESerializer must have been created for writing.
bool	IsFirstApplication ()
	Checks whether the segmenter has already been used to segment an image.
Public Member Functions inherited from eVision.Segmenters.ETwoLayersImageSegmenter
void	Load (string path)
	Load the ETwoLayersImageSegmenter configuration. The given ESerializer must have been created for reading.
void	Load (eVision.ESerializer serializer)
	Load the ETwoLayersImageSegmenter configuration. The given ESerializer must have been created for reading.
void	Save (string path)
	Save the ETwoLayersImageSegmenter configuration. The given ESerializer must have been created for writing.
void	Save (eVision.ESerializer serializer)
	Save the ETwoLayersImageSegmenter configuration. The given ESerializer must have been created for writing.

Properties
eVision.EGrayscaleSingleThreshold	Mode [get, set]
	Threshold selection mode.
uint	AbsoluteThreshold [get, set]
	Value of the threshold to be used in the case of absolute thresholding.
float	RelativeThreshold [get, set]
	Fraction of the image pixels that belongs to the black layer in the case of relative thresholding.
uint	LastThreshold [get]
	Retrieves the actual threshold value that was used for the last image that got encoded by the segmenter.
Properties inherited from eVision.Segmenters.ETwoLayersImageSegmenter
virtual uint	BlackLayerIndex [get, set]
	Index of the black layer in the destination coded image.
virtual bool	BlackLayerEncoded [get, set]
	Black layer encoding status.
virtual uint	WhiteLayerIndex [get, set]
	Index of the white layer in the destination coded image.
virtual bool	WhiteLayerEncoded [get, set]
	White layer encoding status.

Detailed Description

Segments an image using a single threshold on a grayscale image.

This segmenter is applicable to EROIBW8 and EROIBW16 grayscale images. It produces coded images with two layers: the black layer (usually, with index 0) contains the unmasked pixels having a gray value strictly below the threshold value; and the white layer (usually, with index 1) contains the remaining unmasked pixels, i.e. unmasked pixels having a gray value greater or equal to the threshold value. The default thresholding method is minimum residue. If another method is required, the EGrayscaleSingleThresholdSegmenter.Mode property must be set prior to encoding.

License(s): EasyObject

Member Function Documentation

IsFirstApplication()

bool eVision.Segmenters.EGrayscaleSingleThresholdSegmenter.IsFirstApplication

(

)

Checks whether the segmenter has already been used to segment an image.

Load() [1/2]

new void eVision.Segmenters.EGrayscaleSingleThresholdSegmenter.Load

(

eVision.ESerializer

serializer

)

Load the EGrayscaleSingleThresholdSegmenter configuration. The given ESerializer must have been created for reading.

Parameters

serializer

The serializer.

Load() [2/2]

new void eVision.Segmenters.EGrayscaleSingleThresholdSegmenter.Load

(

string

path

)

Load the EGrayscaleSingleThresholdSegmenter configuration. The given ESerializer must have been created for reading.

Parameters

path	The file path.

Save() [1/2]

new void eVision.Segmenters.EGrayscaleSingleThresholdSegmenter.Save

(

eVision.ESerializer

serializer

)

Save the EGrayscaleSingleThresholdSegmenter configuration. The given ESerializer must have been created for writing.

Parameters

serializer

The serializer.

Save() [2/2]

new void eVision.Segmenters.EGrayscaleSingleThresholdSegmenter.Save

(

string

path

)

Save the EGrayscaleSingleThresholdSegmenter configuration. The given ESerializer must have been created for writing.

Parameters

path	The file path.

Property Documentation

AbsoluteThreshold

uint eVision.Segmenters.EGrayscaleSingleThresholdSegmenter.AbsoluteThreshold

getset

Value of the threshold to be used in the case of absolute thresholding.

LastThreshold

uint eVision.Segmenters.EGrayscaleSingleThresholdSegmenter.LastThreshold

get

Retrieves the actual threshold value that was used for the last image that got encoded by the segmenter.

A call to this method will result in an exception if it is the first time the segmenter is applied. To check whether the segmenter has already been applied, call the EGrayscaleSingleThresholdSegmenter.IsFirstApplication method.

Mode

eVision.EGrayscaleSingleThreshold eVision.Segmenters.EGrayscaleSingleThresholdSegmenter.Mode

getset

Threshold selection mode.

RelativeThreshold

float eVision.Segmenters.EGrayscaleSingleThresholdSegmenter.RelativeThreshold

getset

Fraction of the image pixels that belongs to the black layer in the case of relative thresholding.