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OpenCV
3.3.1
Open Source Computer Vision
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OpenCV
3.3.1
Open Source Computer Vision
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Class implementing the LSC (Linear Spectral Clustering) superpixels algorithm described in [100]. More...
#include "lsc.hpp"
Public Member Functions | |
| virtual void | enforceLabelConnectivity (int min_element_size=20)=0 |
| Enforce label connectivity. More... | |
| virtual void | getLabelContourMask (OutputArray image, bool thick_line=true) const =0 |
| Returns the mask of the superpixel segmentation stored in SuperpixelLSC object. More... | |
| virtual void | getLabels (OutputArray labels_out) const =0 |
| Returns the segmentation labeling of the image. More... | |
| virtual int | getNumberOfSuperpixels () const =0 |
| Calculates the actual amount of superpixels on a given segmentation computed and stored in SuperpixelLSC object. More... | |
| virtual void | iterate (int num_iterations=10)=0 |
| Calculates the superpixel segmentation on a given image with the initialized parameters in the SuperpixelLSC object. More... | |
 Public Member Functions inherited from cv::Algorithm | |
| Algorithm () | |
| virtual | ~Algorithm () |
| virtual void | clear () |
| Clears the algorithm state. More... | |
| virtual bool | empty () const |
| Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read. More... | |
| virtual String | getDefaultName () const |
| virtual void | read (const FileNode &fn) |
| Reads algorithm parameters from a file storage. More... | |
| virtual void | save (const String &filename) const |
| virtual void | write (FileStorage &fs) const |
| Stores algorithm parameters in a file storage. More... | |
Additional Inherited Members | |
| Static Public Member Functions inherited from cv::Algorithm | |
| template<typename _Tp > | |
| static Ptr< _Tp > | load (const String &filename, const String &objname=String()) |
| Loads algorithm from the file. More... | |
| template<typename _Tp > | |
| static Ptr< _Tp > | loadFromString (const String &strModel, const String &objname=String()) |
| Loads algorithm from a String. More... | |
| template<typename _Tp > | |
| static Ptr< _Tp > | read (const FileNode &fn) |
| Reads algorithm from the file node. More... | |
| Protected Member Functions inherited from cv::Algorithm | |
| void | writeFormat (FileStorage &fs) const |
Class implementing the LSC (Linear Spectral Clustering) superpixels algorithm described in [100].
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
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pure virtual |
Enforce label connectivity.
| 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.
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pure virtual |
Returns the mask of the superpixel segmentation stored in SuperpixelLSC object.
| 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.
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pure virtual |
Returns the segmentation labeling of the image.
Each label represents a superpixel, and each pixel is assigned to one superpixel label.
| 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()].
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pure virtual |
Calculates the actual amount of superpixels on a given segmentation computed and stored in SuperpixelLSC object.
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pure virtual |
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.
| 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.
1.8.12