OpenCVForUnity.XimgprocModule.SuperpixelLSC Class Reference

Class implementing the LSC (Linear Spectral Clustering) superpixels algorithm described in [LiCVPR2015LSC]. More...

Public Member Functions
void	enforceLabelConnectivity ()
	Enforce label connectivity.
void	enforceLabelConnectivity (int min_element_size)
	Enforce label connectivity.
void	getLabelContourMask (Mat image)
	Returns the mask of the superpixel segmentation stored in SuperpixelLSC object.
void	getLabelContourMask (Mat image, bool thick_line)
	Returns the mask of the superpixel segmentation stored in SuperpixelLSC object.
void	getLabels (Mat labels_out)
	Returns the segmentation labeling of the image.
int	getNumberOfSuperpixels ()
	Calculates the actual amount of superpixels on a given segmentation computed and stored in SuperpixelLSC object.
void	iterate ()
	Calculates the superpixel segmentation on a given image with the initialized parameters in the SuperpixelLSC object.
void	iterate (int num_iterations)
	Calculates the superpixel segmentation on a given image with the initialized parameters in the SuperpixelLSC object.
Public Member Functions inherited from OpenCVForUnity.CoreModule.Algorithm
virtual void	clear ()
	Clears the algorithm state.
virtual bool	empty ()
	Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read.
virtual string	getDefaultName ()
IntPtr	getNativeObjAddr ()
void	save (string filename)
Public Member Functions inherited from OpenCVForUnity.DisposableObject
void	Dispose ()
void	ThrowIfDisposed ()

Static Public Member Functions
static new SuperpixelLSC	__fromPtr__ (IntPtr addr)
Static Public Member Functions inherited from OpenCVForUnity.CoreModule.Algorithm
static Algorithm	__fromPtr__ (IntPtr addr)
Static Public Member Functions inherited from OpenCVForUnity.DisposableObject
static IntPtr	ThrowIfNullIntPtr (IntPtr ptr)

Protected Member Functions
override void	Dispose (bool disposing)
Protected Member Functions inherited from OpenCVForUnity.CoreModule.Algorithm
Protected Member Functions inherited from OpenCVForUnity.DisposableOpenCVObject
	DisposableOpenCVObject ()
	DisposableOpenCVObject (bool isEnabledDispose)
	DisposableOpenCVObject (IntPtr ptr)
	DisposableOpenCVObject (IntPtr ptr, bool isEnabledDispose)
Protected Member Functions inherited from OpenCVForUnity.DisposableObject
	DisposableObject ()
	DisposableObject (bool isEnabledDispose)

Additional Inherited Members
Package Functions inherited from OpenCVForUnity.CoreModule.Algorithm
Package Attributes inherited from OpenCVForUnity.DisposableOpenCVObject
Properties inherited from OpenCVForUnity.DisposableObject
bool	IsDisposed [get, protected set]
bool	IsEnabledDispose [get, set]

Detailed Description

Class implementing the LSC (Linear Spectral Clustering) superpixels algorithm described in [LiCVPR2015LSC].

LSC (Linear Spectral Clustering) produces compact and uniform superpixels with low computational costs. Basically, a normalized cuts formulation of the superpixel segmentation is adopted based on a similarity metric that measures the color similarity and space proximity between image pixels. LSC is of linear computational complexity and high memory efficiency and is able to preserve global properties of images

Member Function Documentation

__fromPtr__()

static new SuperpixelLSC OpenCVForUnity.XimgprocModule.SuperpixelLSC.__fromPtr__ ( IntPtr addr )

static

Dispose()

override void OpenCVForUnity.XimgprocModule.SuperpixelLSC.Dispose ( bool disposing )

protectedvirtual

Reimplemented from OpenCVForUnity.CoreModule.Algorithm.

enforceLabelConnectivity() [1/2]

void OpenCVForUnity.XimgprocModule.SuperpixelLSC.enforceLabelConnectivity

(

)

Enforce label connectivity.

Parameters

min_element_size

The minimum element size in percents that should be absorbed into a bigger superpixel. Given resulted average superpixel size valid value should be in 0-100 range, 25 means that less then a quarter sized superpixel should be absorbed, this is default.

The function merge component that is too small, assigning the previously found adjacent label to this component. Calling this function may change the final number of superpixels.

enforceLabelConnectivity() [2/2]

void OpenCVForUnity.XimgprocModule.SuperpixelLSC.enforceLabelConnectivity

(

int

min_element_size

)

Enforce label connectivity.

Parameters

min_element_size

The minimum element size in percents that should be absorbed into a bigger superpixel. Given resulted average superpixel size valid value should be in 0-100 range, 25 means that less then a quarter sized superpixel should be absorbed, this is default.

The function merge component that is too small, assigning the previously found adjacent label to this component. Calling this function may change the final number of superpixels.

getLabelContourMask() [1/2]

void OpenCVForUnity.XimgprocModule.SuperpixelLSC.getLabelContourMask

(

Mat

image

)

Returns the mask of the superpixel segmentation stored in SuperpixelLSC object.

Parameters

image	Return: CV_8U1 image mask where -1 indicates that the pixel is a superpixel border, and 0 otherwise.
thick_line	If false, the border is only one pixel wide, otherwise all pixels at the border are masked.

The function return the boundaries of the superpixel segmentation.

getLabelContourMask() [2/2]

void OpenCVForUnity.XimgprocModule.SuperpixelLSC.getLabelContourMask	(	Mat	image,
		bool	thick_line )

Returns the mask of the superpixel segmentation stored in SuperpixelLSC object.

Parameters

image	Return: CV_8U1 image mask where -1 indicates that the pixel is a superpixel border, and 0 otherwise.
thick_line	If false, the border is only one pixel wide, otherwise all pixels at the border are masked.

The function return the boundaries of the superpixel segmentation.

getLabels()

void OpenCVForUnity.XimgprocModule.SuperpixelLSC.getLabels

(

Mat

labels_out

)

Returns the segmentation labeling of the image.

Each label represents a superpixel, and each pixel is assigned to one superpixel label.

Parameters

labels_out

Return: A CV_32SC1 integer array containing the labels of the superpixel segmentation. The labels are in the range [0, getNumberOfSuperpixels()].

The function returns an image with the labels of the superpixel segmentation. The labels are in the range [0, getNumberOfSuperpixels()].

getNumberOfSuperpixels()

int OpenCVForUnity.XimgprocModule.SuperpixelLSC.getNumberOfSuperpixels

(

)

Calculates the actual amount of superpixels on a given segmentation computed and stored in SuperpixelLSC object.

iterate() [1/2]

void OpenCVForUnity.XimgprocModule.SuperpixelLSC.iterate

(

)

Calculates the superpixel segmentation on a given image with the initialized parameters in the SuperpixelLSC object.

This function can be called again without the need of initializing the algorithm with createSuperpixelLSC(). This save the computational cost of allocating memory for all the structures of the algorithm.

Parameters

num_iterations

Number of iterations. Higher number improves the result.

The function computes the superpixels segmentation of an image with the parameters initialized with the function createSuperpixelLSC(). The algorithms starts from a grid of superpixels and then refines the boundaries by proposing updates of edges boundaries.

iterate() [2/2]

void OpenCVForUnity.XimgprocModule.SuperpixelLSC.iterate

(

int

num_iterations

)

Calculates the superpixel segmentation on a given image with the initialized parameters in the SuperpixelLSC object.

This function can be called again without the need of initializing the algorithm with createSuperpixelLSC(). This save the computational cost of allocating memory for all the structures of the algorithm.

Parameters

num_iterations

Number of iterations. Higher number improves the result.

The function computes the superpixels segmentation of an image with the parameters initialized with the function createSuperpixelLSC(). The algorithms starts from a grid of superpixels and then refines the boundaries by proposing updates of edges boundaries.

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

• OpenCVForUnity/Assets/OpenCVForUnity/org/opencv_contrib/ximgproc/SuperpixelLSC.cs