Superpixel utilities. More...

#include <superpixel_tools.h>

Static Public Member Functions
static int	computeRegionSizeFromSuperpixels (const cv::Mat &image, int superpixels)
	Compute region size from desired number of superpixels. More...

static void	computeHeightWidthFromSuperpixels (const cv::Mat &image, int superpixels, int &height, int &width)
	Compute width and height for the given number of superpixels. More...

static void	computeHeightWidthLevelsFromSuperpixels (const cv::Mat &image, int superpixels, int &height, int &width, int &levels)
	Compute width, height and levels for the given number of superpixels. More...

static void	computeRegionSizeLevels (const cv::Mat &image, int superpixels, int &region_size, int &levels)
	Compute region size and levels for the given number of superpixels. More...

static void	relabelSuperpixels (cv::Mat &labels)
	Relabel superpixel segmentation. More...

static void	computeLabelsFromBoundaries (const cv::Mat &image, const cv::Mat &boundaries, cv::Mat &labels, int BOUNDARY_VALUE=-1, int INNER_VALUE=-2)
	Compute label map from boundaries by assigning boundary pixels to the nearest superpixel and flooding the connected components. More...

static void	assignBoundariesToSuperpixels (const cv::Mat &image, const cv::Mat &boundaries, cv::Mat &labels, int BOUNDARY_VALUE=-1)
	Assigns boundary pixels (indicated by -1) to the nearest superpixel (indicated by labels >= 0). More...

static int	countSuperpixels (const cv::Mat &labels)
	Count number of superpixels. More...

static int	relabelConnectedSuperpixels (cv::Mat &labels)
	Relabel superpixels based on connected components. More...

static int	enforceMinimumSuperpixelSize (const cv::Mat &image, cv::Mat &labels, int size)
	Enforce the minimum segment size by merging small superpixels with similar neighboring superpixels. More...

static int	enforceMinimumSuperpixelSizeUpTo (const cv::Mat &image, cv::Mat &labels, int number)
	Enforce the minimum segment size by merging small superpixels with similar neighboring superpixels such that the given number of superpixels is merged. More...

Detailed Description

Superpixel utilities.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Author: David Stutz

Member Function Documentation

void SuperpixelTools::assignBoundariesToSuperpixels	(	const cv::Mat &	image,
		const cv::Mat &	boundaries,
		cv::Mat &	labels,
		int	BOUNDARY_VALUE = `-1`
	)

static

Assigns boundary pixels (indicated by -1) to the nearest superpixel (indicated by labels >= 0).

Parameters

[in]	image	image to compute superpixels for
[in]	boudnaries	given boundaries to convert to superpixel labels
[in]	BOUDARY_VALUE	value a boundary pixel takes

void SuperpixelTools::computeHeightWidthFromSuperpixels	(	const cv::Mat &	image,
		int	superpixels,
		int &	height,
		int &	width
	)

static

Compute width and height for the given number of superpixels.

Parameters

[in]	image	image for the number of rows and cols
[in]	superpixels	number of desired superpixels
[out]	height	region height to achieve desired number of superpixels
[out]	width	region width to achieve desired number of superpixels

void SuperpixelTools::computeHeightWidthLevelsFromSuperpixels	(	const cv::Mat &	image,
		int	superpixels,
		int &	height,
		int &	width,
		int &	levels
	)

static

Compute width, height and levels for the given number of superpixels.

Parameters

[in]	image	image for the number of rows and cols
[in]	superpixels	desired number of superpixels
[out]	height	region height on lowest level
[out]	width	region width on lowest level
[out]	levels	number of levels to achieve the desired number of superpixels

void SuperpixelTools::computeLabelsFromBoundaries	(	const cv::Mat &	image,
		const cv::Mat &	boundaries,
		cv::Mat &	labels,
		int	BOUNDARY_VALUE = `-1`,
		int	INNER_VALUE = `-2`
	)

static

Compute label map from boundaries by assigning boundary pixels to the nearest superpixel and flooding the connected components.

Parameters

[in]	image	image to compute superpixel labels for
[in]	boundaries	given boundaries for image
[out]	labels	computed superpixel labels
[in]	BOUDNARY_VALUE	the value a boundary pixel takes
[in]	INNER_VALUE	the value an inner pixel takes

int SuperpixelTools::computeRegionSizeFromSuperpixels	(	const cv::Mat &	image,
		int	superpixels
	)

static

Compute region size from desired number of superpixels.

Parameters

[in]	image	image for number of rows and cols
[in]	superpixels	number of desired superpixels

Returns: region size required for the desired number of superpixels on the given image size

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

void SuperpixelTools::computeRegionSizeLevels	(	const cv::Mat &	image,
		int	superpixels,
		int &	region_size,
		int &	levels
	)

static

Compute region size and levels for the given number of superpixels.

Parameters

[in]	image	image for the number of rows and cols
[in]	superpixels	desired number of superpixels
[out]	region_size	region size on lowest level
[out]	levels	number of levels to achieve desired number of superpixels

int SuperpixelTools::countSuperpixels ( const cv::Mat & labels )

static

Count number of superpixels.

Parameters

[in] labels superpixel labels

Returns: number of superpixels

int SuperpixelTools::enforceMinimumSuperpixelSize	(	const cv::Mat &	image,
		cv::Mat &	labels,
		int	size
	)

static

Enforce the minimum segment size by merging small superpixels with similar neighboring superpixels.

Parameters

[in]	image	image to enforce minimum superpixel size for
[in]	labels	superpixel labels
[in]	size	minimum superpixel size

Returns: new number of superpixels

int SuperpixelTools::enforceMinimumSuperpixelSizeUpTo	(	const cv::Mat &	image,
		cv::Mat &	labels,
		int	number
	)

static

Enforce the minimum segment size by merging small superpixels with similar neighboring superpixels such that the given number of superpixels is merged.

Parameters

[in]	image	image to enforce minimum superpixels on
[in]	labels	superpixel labels
[in]	number	number of desired superpixels after enforcing minimum size

int SuperpixelTools::relabelConnectedSuperpixels ( cv::Mat & labels )

static

Relabel superpixels based on connected components.

Parameters

[in] labels superpixel labels to relabel as connected

void SuperpixelTools::relabelSuperpixels ( cv::Mat & labels )

static

Relabel superpixel segmentation.

Parameters

[in] labels superpixel labels to relabel

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

lib_eval/superpixel_tools.h
lib_eval/superpixel_tools.cpp

Static Public Member Functions

Detailed Description

Member Function Documentation