pcl::SampleConsensusModelStick — PointCloudLibrary

SampleConsensusModelStick defines a model for 3D stick segmentation. More...

#include <pcl/sample_consensus/sac_model_stick.h>

Public Types
using	PointCloud = typename SampleConsensusModel< PointT >::PointCloud
using	PointCloudPtr = typename SampleConsensusModel< PointT >::PointCloudPtr
using	PointCloudConstPtr = typename SampleConsensusModel< PointT >::PointCloudConstPtr
using	Ptr = shared_ptr< SampleConsensusModelStick< PointT > >
using	ConstPtr = shared_ptr< const SampleConsensusModelStick< PointT > >
Public Types inherited from pcl::SampleConsensusModel< PointT >
using	PointCloud = pcl::PointCloud< PointT >
using	PointCloudConstPtr = typename PointCloud::ConstPtr
using	PointCloudPtr = typename PointCloud::Ptr
using	SearchPtr = typename pcl::search::Search< PointT >::Ptr
using	Ptr = shared_ptr< SampleConsensusModel< PointT > >
using	ConstPtr = shared_ptr< const SampleConsensusModel< PointT > >

Public Member Functions
	SampleConsensusModelStick (const PointCloudConstPtr &cloud, bool random=false)
	Constructor for base SampleConsensusModelStick. More...
	SampleConsensusModelStick (const PointCloudConstPtr &cloud, const Indices &indices, bool random=false)
	Constructor for base SampleConsensusModelStick. More...
	~SampleConsensusModelStick () override=default
	Empty destructor. More...
bool	computeModelCoefficients (const Indices &samples, Eigen::VectorXf &model_coefficients) const override
	Check whether the given index samples can form a valid stick model, compute the model coefficients from these samples and store them internally in model_coefficients_. More...
void	getDistancesToModel (const Eigen::VectorXf &model_coefficients, std::vector< double > &distances) const override
	Compute all squared distances from the cloud data to a given stick model. More...
void	selectWithinDistance (const Eigen::VectorXf &model_coefficients, const double threshold, Indices &inliers) override
	Select all the points which respect the given model coefficients as inliers. More...
std::size_t	countWithinDistance (const Eigen::VectorXf &model_coefficients, const double threshold) const override
	Count all the points which respect the given model coefficients as inliers. More...
void	optimizeModelCoefficients (const Indices &inliers, const Eigen::VectorXf &model_coefficients, Eigen::VectorXf &optimized_coefficients) const override
	Recompute the stick coefficients using the given inlier set and return them to the user. More...
void	projectPoints (const Indices &inliers, const Eigen::VectorXf &model_coefficients, PointCloud &projected_points, bool copy_data_fields=true) const override
	Create a new point cloud with inliers projected onto the stick model. More...
bool	doSamplesVerifyModel (const std::set< index_t > &indices, const Eigen::VectorXf &model_coefficients, const double threshold) const override
	Verify whether a subset of indices verifies the given stick model coefficients. More...
pcl::SacModel	getModelType () const override
	Return a unique id for this model (SACMODEL_STICK). More...
Public Member Functions inherited from pcl::SampleConsensusModel< PointT >
	SampleConsensusModel (const PointCloudConstPtr &cloud, bool random=false)
	Constructor for base SampleConsensusModel. More...
	SampleConsensusModel (const PointCloudConstPtr &cloud, const Indices &indices, bool random=false)
	Constructor for base SampleConsensusModel. More...
virtual	~SampleConsensusModel ()=default
	Destructor for base SampleConsensusModel. More...
virtual void	getSamples (int &iterations, Indices &samples)
	Get a set of random data samples and return them as point indices. More...
virtual void	setInputCloud (const PointCloudConstPtr &cloud)
	Provide a pointer to the input dataset. More...
PointCloudConstPtr	getInputCloud () const
	Get a pointer to the input point cloud dataset. More...
void	setIndices (const IndicesPtr &indices)
	Provide a pointer to the vector of indices that represents the input data. More...
void	setIndices (const Indices &indices)
	Provide the vector of indices that represents the input data. More...
IndicesPtr	getIndices () const
	Get a pointer to the vector of indices used. More...
const std::string &	getClassName () const
	Get a string representation of the name of this class. More...
unsigned int	getSampleSize () const
	Return the size of a sample from which the model is computed. More...
unsigned int	getModelSize () const
	Return the number of coefficients in the model. More...
void	setRadiusLimits (const double &min_radius, const double &max_radius)
	Set the minimum and maximum allowable radius limits for the model (applicable to models that estimate a radius) More...
void	getRadiusLimits (double &min_radius, double &max_radius) const
	Get the minimum and maximum allowable radius limits for the model as set by the user. More...
void	setModelConstraints (std::function< bool(const Eigen::VectorXf &)> function)
	This can be used to impose any kind of constraint on the model, e.g. More...
void	setSamplesMaxDist (const double &radius, SearchPtr search)
	Set the maximum distance allowed when drawing random samples. More...
void	getSamplesMaxDist (double &radius) const
	Get maximum distance allowed when drawing random samples. More...
double	computeVariance (const std::vector< double > &error_sqr_dists) const
	Compute the variance of the errors to the model. More...
double	computeVariance () const
	Compute the variance of the errors to the model from the internally estimated vector of distances. More...

Protected Member Functions
bool	isSampleGood (const Indices &samples) const override
	Check if a sample of indices results in a good sample of points indices. More...
Protected Member Functions inherited from pcl::SampleConsensusModel< PointT >
	SampleConsensusModel (bool random=false)
	Empty constructor for base SampleConsensusModel. More...
void	drawIndexSample (Indices &sample)
	Fills a sample array with random samples from the indices_ vector. More...
void	drawIndexSampleRadius (Indices &sample)
	Fills a sample array with one random sample from the indices_ vector and other random samples that are closer than samples_radius_. More...
virtual bool	isModelValid (const Eigen::VectorXf &model_coefficients) const
	Check whether a model is valid given the user constraints. More...
int	rnd ()
	Boost-based random number generator. More...

Additional Inherited Members
Protected Attributes inherited from pcl::SampleConsensusModel< PointT >
std::string	model_name_
	The model name. More...
PointCloudConstPtr	input_
	A boost shared pointer to the point cloud data array. More...
IndicesPtr	indices_
	A pointer to the vector of point indices to use. More...
double	radius_min_
	The minimum and maximum radius limits for the model. More...
double	radius_max_
double	samples_radius_
	The maximum distance of subsequent samples from the first (radius search) More...
SearchPtr	samples_radius_search_
	The search object for picking subsequent samples using radius search. More...
Indices	shuffled_indices_
	Data containing a shuffled version of the indices. More...
boost::mt19937	rng_alg_
	Boost-based random number generator algorithm. More...
std::shared_ptr< boost::uniform_int<> >	rng_dist_
	Boost-based random number generator distribution. More...
std::shared_ptr< boost::variate_generator< boost::mt19937 &, boost::uniform_int<> > >	rng_gen_
	Boost-based random number generator. More...
std::vector< double >	error_sqr_dists_
	A vector holding the distances to the computed model. More...
unsigned int	sample_size_
	The size of a sample from which the model is computed. More...
unsigned int	model_size_
	The number of coefficients in the model. More...
std::function< bool(const Eigen::VectorXf &)>	custom_model_constraints_
	A user defined function that takes model coefficients and returns whether the model is acceptable or not. More...
Static Protected Attributes inherited from pcl::SampleConsensusModel< PointT >
static const unsigned int	max_sample_checks_ = 1000
	The maximum number of samples to try until we get a good one. More...

Detailed Description

template<typename PointT>
class pcl::SampleConsensusModelStick< PointT >

SampleConsensusModelStick defines a model for 3D stick segmentation.

A stick is a line with a user given minimum/maximum width. The model coefficients are defined as:

point_on_line.x : the X coordinate of a point on the line
point_on_line.y : the Y coordinate of a point on the line
point_on_line.z : the Z coordinate of a point on the line
line_direction.x : the X coordinate of a line's direction
line_direction.y : the Y coordinate of a line's direction
line_direction.z : the Z coordinate of a line's direction
line_width : the width of the line

Warning: This model is considered deprecated. The coefficients are used inconsistently in the methods, and the last coefficient (line width) is unused. We recommend to use the line or cylinder model instead.

Author: Radu B. Rusu

Definition at line 67 of file sac_model_stick.h.

Member Typedef Documentation

ConstPtr

template<typename PointT >

using pcl::SampleConsensusModelStick< PointT >::ConstPtr = shared_ptr<const SampleConsensusModelStick<PointT> >

Definition at line 84 of file sac_model_stick.h.

PointCloud

template<typename PointT >

using pcl::SampleConsensusModelStick< PointT >::PointCloud = typename SampleConsensusModel<PointT>::PointCloud

Definition at line 79 of file sac_model_stick.h.

PointCloudConstPtr

template<typename PointT >

using pcl::SampleConsensusModelStick< PointT >::PointCloudConstPtr = typename SampleConsensusModel<PointT>::PointCloudConstPtr

Definition at line 81 of file sac_model_stick.h.

PointCloudPtr

template<typename PointT >

using pcl::SampleConsensusModelStick< PointT >::PointCloudPtr = typename SampleConsensusModel<PointT>::PointCloudPtr

Definition at line 80 of file sac_model_stick.h.

Ptr

template<typename PointT >

using pcl::SampleConsensusModelStick< PointT >::Ptr = shared_ptr<SampleConsensusModelStick<PointT> >

Definition at line 83 of file sac_model_stick.h.

Constructor & Destructor Documentation

SampleConsensusModelStick() [1/2]

template<typename PointT >

pcl::SampleConsensusModelStick< PointT >::SampleConsensusModelStick	(	const PointCloudConstPtr &	cloud,
		bool	random = `false`
	)

inline

Constructor for base SampleConsensusModelStick.

Parameters

[in]	cloud	the input point cloud dataset
[in]	random	if true set the random seed to the current time, else set to 12345 (default: false)

Definition at line 90 of file sac_model_stick.h.

References pcl::SampleConsensusModel< PointT >::model_name_, pcl::SampleConsensusModel< PointT >::model_size_, and pcl::SampleConsensusModel< PointT >::sample_size_.

SampleConsensusModelStick() [2/2]

template<typename PointT >

pcl::SampleConsensusModelStick< PointT >::SampleConsensusModelStick	(	const PointCloudConstPtr &	cloud,
		const Indices &	indices,
		bool	random = `false`
	)

inline

Constructor for base SampleConsensusModelStick.

Parameters

[in]	cloud	the input point cloud dataset
[in]	indices	a vector of point indices to be used from cloud
[in]	random	if true set the random seed to the current time, else set to 12345 (default: false)

Definition at line 104 of file sac_model_stick.h.

References pcl::SampleConsensusModel< PointT >::model_name_, pcl::SampleConsensusModel< PointT >::model_size_, and pcl::SampleConsensusModel< PointT >::sample_size_.

~SampleConsensusModelStick()

template<typename PointT >

pcl::SampleConsensusModelStick< PointT >::~SampleConsensusModelStick ( )

overridedefault

Empty destructor.

Member Function Documentation

computeModelCoefficients()

template<typename PointT >

bool pcl::SampleConsensusModelStick< PointT >::computeModelCoefficients	(	const Indices &	samples,
		Eigen::VectorXf &	model_coefficients
	)		const

overridevirtual

Check whether the given index samples can form a valid stick model, compute the model coefficients from these samples and store them internally in model_coefficients_.

The stick coefficients are represented by a point and a line direction

Parameters

[in]	samples	the point indices found as possible good candidates for creating a valid model
[out]	model_coefficients	the resultant model coefficients

Implements pcl::SampleConsensusModel< PointT >.

Definition at line 73 of file sac_model_stick.hpp.

countWithinDistance()

template<typename PointT >

std::size_t pcl::SampleConsensusModelStick< PointT >::countWithinDistance	(	const Eigen::VectorXf &	model_coefficients,
		const double	threshold
	)		const

overridevirtual

Count all the points which respect the given model coefficients as inliers.

Parameters

[in]	model_coefficients	the coefficients of a model that we need to compute distances to
[in]	threshold	maximum admissible distance threshold for determining the inliers from the outliers

Returns: the resultant number of inliers

Implements pcl::SampleConsensusModel< PointT >.

Definition at line 197 of file sac_model_stick.hpp.

doSamplesVerifyModel()

template<typename PointT >

bool pcl::SampleConsensusModelStick< PointT >::doSamplesVerifyModel	(	const std::set< index_t > &	indices,
		const Eigen::VectorXf &	model_coefficients,
		const double	threshold
	)		const

overridevirtual

Verify whether a subset of indices verifies the given stick model coefficients.

Parameters

[in]	indices	the data indices that need to be tested against the plane model
[in]	model_coefficients	the plane model coefficients
[in]	threshold	a maximum admissible distance threshold for determining the inliers from the outliers

Implements pcl::SampleConsensusModel< PointT >.

Definition at line 375 of file sac_model_stick.hpp.

getDistancesToModel()

template<typename PointT >

void pcl::SampleConsensusModelStick< PointT >::getDistancesToModel	(	const Eigen::VectorXf &	model_coefficients,
		std::vector< double > &	distances
	)		const

overridevirtual

Compute all squared distances from the cloud data to a given stick model.

Parameters

[in]	model_coefficients	the coefficients of a stick model that we need to compute distances to
[out]	distances	the resultant estimated squared distances

Implements pcl::SampleConsensusModel< PointT >.

Definition at line 107 of file sac_model_stick.hpp.

getModelType()

template<typename PointT >

pcl::SacModel pcl::SampleConsensusModelStick< PointT >::getModelType ( ) const

inlineoverridevirtual

Return a unique id for this model (SACMODEL_STICK).

Implements pcl::SampleConsensusModel< PointT >.

Definition at line 190 of file sac_model_stick.h.

References pcl::SACMODEL_STICK.

isSampleGood()

template<typename PointT >

bool pcl::SampleConsensusModelStick< PointT >::isSampleGood ( const Indices & samples ) const

overrideprotectedvirtual

Check if a sample of indices results in a good sample of points indices.

Parameters

[in] samples the resultant index samples

Implements pcl::SampleConsensusModel< PointT >.

Definition at line 51 of file sac_model_stick.hpp.

optimizeModelCoefficients()

template<typename PointT >

void pcl::SampleConsensusModelStick< PointT >::optimizeModelCoefficients	(	const Indices &	inliers,
		const Eigen::VectorXf &	model_coefficients,
		Eigen::VectorXf &	optimized_coefficients
	)		const

overridevirtual

Recompute the stick coefficients using the given inlier set and return them to the user.

Note: : these are the coefficients of the stick model after refinement (e.g. after SVD)

Parameters

[in]	inliers	the data inliers found as supporting the model
[in]	model_coefficients	the initial guess for the model coefficients
[out]	optimized_coefficients	the resultant recomputed coefficients after optimization

Implements pcl::SampleConsensusModel< PointT >.

Definition at line 249 of file sac_model_stick.hpp.

References pcl::computeCorrespondingEigenVector(), pcl::computeMeanAndCovarianceMatrix(), and pcl::eigen33().

projectPoints()

template<typename PointT >

void pcl::SampleConsensusModelStick< PointT >::projectPoints	(	const Indices &	inliers,
		const Eigen::VectorXf &	model_coefficients,
		PointCloud &	projected_points,
		bool	copy_data_fields = `true`
	)		const

overridevirtual

Create a new point cloud with inliers projected onto the stick model.

Parameters

[in]	inliers	the data inliers that we want to project on the stick model
[in]	model_coefficients	the normalized coefficients of a stick model
[out]	projected_points	the resultant projected points
[in]	copy_data_fields	set to true if we need to copy the other data fields

Implements pcl::SampleConsensusModel< PointT >.

Definition at line 295 of file sac_model_stick.hpp.

References pcl::PointCloud< PointT >::header, pcl::PointCloud< PointT >::height, pcl::PointCloud< PointT >::is_dense, pcl::PointCloud< PointT >::resize(), pcl::PointCloud< PointT >::size(), and pcl::PointCloud< PointT >::width.

selectWithinDistance()

template<typename PointT >

void pcl::SampleConsensusModelStick< PointT >::selectWithinDistance	(	const Eigen::VectorXf &	model_coefficients,
		const double	threshold,
		Indices &	inliers
	)

overridevirtual

Select all the points which respect the given model coefficients as inliers.

Parameters

[in]	model_coefficients	the coefficients of a stick model that we need to compute distances to
[in]	threshold	a maximum admissible distance threshold for determining the inliers from the outliers
[out]	inliers	the resultant model inliers

Implements pcl::SampleConsensusModel< PointT >.

Definition at line 147 of file sac_model_stick.hpp.

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

pcl/sample_consensus/sac_model_stick.h
pcl/sample_consensus/impl/sac_model_stick.hpp

© 2009–2012, Willow Garage, Inc.
© 2012–, Open Perception, Inc.
Licensed under the BSD License.
https://pointclouds.org/documentation/classpcl_1_1_sample_consensus_model_stick.html

Public Types

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

template<typename PointT> class pcl::SampleConsensusModelStick< PointT >

Member Typedef Documentation

ConstPtr

PointCloud

PointCloudConstPtr

PointCloudPtr

Ptr

Constructor & Destructor Documentation

SampleConsensusModelStick() [1/2]

SampleConsensusModelStick() [2/2]

~SampleConsensusModelStick()

Member Function Documentation

computeModelCoefficients()

countWithinDistance()

doSamplesVerifyModel()

getDistancesToModel()

getModelType()

isSampleGood()

optimizeModelCoefficients()

projectPoints()

selectWithinDistance()

template<typename PointT>
class pcl::SampleConsensusModelStick< PointT >