Detailed Description

Overview

The pcl_visualization library was built for the purpose of being able to quickly prototype and visualize the results of algorithms operating on 3D point cloud data. Similar to OpenCV's highgui routines for displaying 2D images and for drawing basic 2D shapes on screen, the library offers:

methods for rendering and setting visual properties (colors, point sizes, opacity, etc) for any n-D point cloud datasets in pcl::PointCloud<T> format;
methods for drawing basic 3D shapes on screen (e.g., cylinders, spheres,lines, polygons, etc) either from sets of points or from parametric equations;
a histogram visualization module (PCLHistogramVisualizer) for 2D plots;
a multitude of Geometry and Color handler for pcl::PointCloud<T> datasets;
a pcl::RangeImage visualization module.

The package makes use of the VTK library for 3D rendering for range image and 2D operations.

For implementing your own visualizers, take a look at the tests and examples accompanying the library.

Requirements

Classes
class	pcl::visualization::CloudViewer
	Simple point cloud visualization class. More...

class	pcl::visualization::FloatImageUtils
	Provide some gerneral functionalities regarding 2d float arrays, e.g., for visualization purposes More...

class	pcl::visualization::PCLHistogramVisualizer
	PCL histogram visualizer main class. More...

class	pcl::visualization::ImageViewerInteractorStyle
	An image viewer interactor style, tailored for ImageViewer. More...

class	pcl::visualization::ImageViewer
	ImageViewer is a class for 2D image visualization. More...

class	pcl::visualization::PCLVisualizerInteractorStyle
	PCLVisualizerInteractorStyle defines an unique, custom VTK based interactory style for PCL Visualizer applications. More...

struct	pcl::visualization::Figure2D
	Abstract class for storing figure information. More...

class	pcl::visualization::PCLPainter2D
	PCL Painter2D main class. More...

class	pcl::visualization::PCLPlotter
	PCL Plotter main class. More...

class	pcl::visualization::PCLVisualizer
	PCL Visualizer main class. More...

class	pcl::visualization::PointCloudColorHandler< PointT >
	Base Handler class for PointCloud colors. More...

class	pcl::visualization::PointCloudColorHandlerRandom< PointT >
	Handler for random PointCloud colors (i.e., R, G, B will be randomly chosen) More...

class	pcl::visualization::PointCloudColorHandlerCustom< PointT >
	Handler for predefined user colors. More...

class	pcl::visualization::PointCloudColorHandlerRGBField< PointT >
	RGB handler class for colors. More...

class	pcl::visualization::PointCloudColorHandlerHSVField< PointT >
	HSV handler class for colors. More...

class	pcl::visualization::PointCloudColorHandlerGenericField< PointT >
	Generic field handler class for colors. More...

class	pcl::visualization::PointCloudColorHandlerRGBAField< PointT >
	RGBA handler class for colors. More...

class	pcl::visualization::PointCloudColorHandlerLabelField< PointT >
	Label field handler class for colors. More...

class	pcl::visualization::PointCloudColorHandler< pcl::PCLPointCloud2 >
	Base Handler class for PointCloud colors. More...

class	pcl::visualization::PointCloudColorHandlerRandom< pcl::PCLPointCloud2 >
	Handler for random PointCloud colors (i.e., R, G, B will be randomly chosen) More...

class	pcl::visualization::PointCloudColorHandlerCustom< pcl::PCLPointCloud2 >
	Handler for predefined user colors. More...

class	pcl::visualization::PointCloudColorHandlerRGBField< pcl::PCLPointCloud2 >
	RGB handler class for colors. More...

class	pcl::visualization::PointCloudColorHandlerHSVField< pcl::PCLPointCloud2 >
	HSV handler class for colors. More...

class	pcl::visualization::PointCloudColorHandlerGenericField< pcl::PCLPointCloud2 >
	Generic field handler class for colors. More...

class	pcl::visualization::PointCloudColorHandlerRGBAField< pcl::PCLPointCloud2 >
	RGBA handler class for colors. More...

class	pcl::visualization::PointCloudColorHandlerLabelField< pcl::PCLPointCloud2 >
	Label field handler class for colors. More...

class	pcl::visualization::PointCloudGeometryHandler< PointT >
	Base handler class for PointCloud geometry. More...

class	pcl::visualization::PointCloudGeometryHandlerXYZ< PointT >
	XYZ handler class for PointCloud geometry. More...

class	pcl::visualization::PointCloudGeometryHandlerSurfaceNormal< PointT >
	Surface normal handler class for PointCloud geometry. More...

class	pcl::visualization::PointCloudGeometryHandlerCustom< PointT >
	Custom handler class for PointCloud geometry. More...

class	pcl::visualization::PointCloudGeometryHandler< pcl::PCLPointCloud2 >
	Base handler class for PointCloud geometry. More...

class	pcl::visualization::PointCloudGeometryHandlerXYZ< pcl::PCLPointCloud2 >
	XYZ handler class for PointCloud geometry. More...

class	pcl::visualization::PointCloudGeometryHandlerSurfaceNormal< pcl::PCLPointCloud2 >
	Surface normal handler class for PointCloud geometry. More...

class	pcl::visualization::PointCloudGeometryHandlerCustom< pcl::PCLPointCloud2 >
	Custom handler class for PointCloud geometry. More...

class	pcl::visualization::RangeImageVisualizer
	Range image visualizer class. More...

class	pcl::RegistrationVisualizer< PointSource, PointTarget >
	RegistrationVisualizer represents the base class for rendering the intermediate positions occupied by the source point cloud during it's registration to the target point cloud. More...

class	pcl::visualization::PCLSimpleBufferVisualizer
	PCL simple buffer visualizer main class. More...

Files
file	shapes.h
	Define methods or creating 3D shapes from parametric models.

Functions
PCL_EXPORTS void	pcl::visualization::getCorrespondingPointCloud (vtkPolyData *src, const pcl::PointCloud< pcl::PointXYZ > &tgt, std::vector< int > &indices)
	Obtain a list of corresponding indices, for a set of vtk points, from a pcl::PointCloud. More...

PCL_EXPORTS bool	pcl::visualization::savePointData (vtkPolyData *data, const std::string &out_file, const CloudActorMapPtr &actors)
	Saves the vtk-formatted Point Cloud data into a set of files, based on whether the data comes from previously loaded PCD files. More...

template<typename PointT >
vtkSmartPointer< vtkDataSet >	pcl::visualization::createPolygon (const typename pcl::PointCloud< PointT >::ConstPtr &cloud)
	Create a 3d poly line from a set of points. More...

template<typename PointT >
vtkSmartPointer< vtkDataSet >	pcl::visualization::createPolygon (const pcl::PlanarPolygon< PointT > &planar_polygon)
	Create a 3d poly line from a set of points on the boundary of a planar region. More...

PCL_EXPORTS vtkSmartPointer< vtkDataSet >	pcl::visualization::createLine (const Eigen::Vector4f &pt1, const Eigen::Vector4f &pt2)
	Create a line shape from two points. More...

PCL_EXPORTS vtkSmartPointer< vtkDataSet >	pcl::visualization::createSphere (const Eigen::Vector4f &center, double radius, int res=10)
	Create a sphere shape from a point and a radius. More...

PCL_EXPORTS vtkSmartPointer< vtkDataSet >	pcl::visualization::createCylinder (const pcl::ModelCoefficients &coefficients, int numsides=30)
	Create a cylinder shape from a set of model coefficients. More...

PCL_EXPORTS vtkSmartPointer< vtkDataSet >	pcl::visualization::createSphere (const pcl::ModelCoefficients &coefficients, int res=10)
	Create a sphere shape from a set of model coefficients. More...

PCL_EXPORTS vtkSmartPointer< vtkDataSet >	pcl::visualization::createLine (const pcl::ModelCoefficients &coefficients)
	Create a line shape from a set of model coefficients. More...

PCL_EXPORTS vtkSmartPointer< vtkDataSet >	pcl::visualization::createPlane (const pcl::ModelCoefficients &coefficients)
	Create a planar shape from a set of model coefficients. More...

PCL_EXPORTS vtkSmartPointer< vtkDataSet >	pcl::visualization::createPlane (const pcl::ModelCoefficients &coefficients, double x, double y, double z)
	Create a planar shape from a set of model coefficients. More...

PCL_EXPORTS vtkSmartPointer< vtkDataSet >	pcl::visualization::create2DCircle (const pcl::ModelCoefficients &coefficients, double z=0.0)
	Create a 2d circle shape from a set of model coefficients. More...

PCL_EXPORTS vtkSmartPointer< vtkDataSet >	pcl::visualization::createCone (const pcl::ModelCoefficients &coefficients)
	Create a cone shape from a set of model coefficients. More...

PCL_EXPORTS vtkSmartPointer< vtkDataSet >	pcl::visualization::createCube (const pcl::ModelCoefficients &coefficients)
	Create a cube shape from a set of model coefficients. More...

PCL_EXPORTS vtkSmartPointer< vtkDataSet >	pcl::visualization::createCube (const Eigen::Vector3f &translation, const Eigen::Quaternionf &rotation, double width, double height, double depth)
	Create a cube shape from a set of model coefficients. More...

Function Documentation

◆ create2DCircle()

PCL_EXPORTS vtkSmartPointer<vtkDataSet> pcl::visualization::create2DCircle	(	const pcl::ModelCoefficients &	coefficients,
		double	z = `0.0`
	)

#include <pcl/visualization/common/shapes.h>

Create a 2d circle shape from a set of model coefficients.

Parameters

[in]	coefficients	the model coefficients (x, y, radius)
[in]	z	(optional) specify a z value (default: 0)

// The following are given (or computed using sample consensus techniques -- see SampleConsensusModelCircle2D)
// float x, y, radius;
pcl::ModelCoefficients circle_coeff;
circle_coeff.values.resize (3);    // We need 3 values
circle_coeff.values[0] = x;
circle_coeff.values[1] = y;
circle_coeff.values[2] = radius;
vtkSmartPointer<vtkDataSet> data = pcl::visualization::create2DCircle (circle_coeff, z);

◆ createCone()

PCL_EXPORTS vtkSmartPointer<vtkDataSet> pcl::visualization::createCone ( const pcl::ModelCoefficients & coefficients )

#include <pcl/visualization/common/shapes.h>

Create a cone shape from a set of model coefficients.

Parameters

[in] coefficients the cone coefficients (cone_apex, axis_direction, angle)

// The following are given (or computed using sample consensus techniques -- see SampleConsensusModelCone)
// Eigen::Vector3f cone_apex, axis_direction;
// float angle;
// Note: The height of the cone is set using the magnitude of the axis_direction vector.
pcl::ModelCoefficients cone_coeff;
cone_coeff.values.resize (7);    // We need 7 values
cone_coeff.values[0] = cone_apex.x ();
cone_coeff.values[1] = cone_apex.y ();
cone_coeff.values[2] = cone_apex.z ();
cone_coeff.values[3] = axis_direction.x ();
cone_coeff.values[4] = axis_direction.y ();
cone_coeff.values[5] = axis_direction.z ();
cone_coeff.values[6] = angle (); // degrees
vtkSmartPointer<vtkDataSet> data = pcl::visualization::createCone (cone_coeff);

◆ createCube() [1/2]

PCL_EXPORTS vtkSmartPointer<vtkDataSet> pcl::visualization::createCube ( const pcl::ModelCoefficients & coefficients )

#include <pcl/visualization/common/shapes.h>

Create a cube shape from a set of model coefficients.

Parameters

[in] coefficients the cube coefficients (Tx, Ty, Tz, Qx, Qy, Qz, Qw, width, height, depth)

◆ createCube() [2/2]

PCL_EXPORTS vtkSmartPointer<vtkDataSet> pcl::visualization::createCube	(	const Eigen::Vector3f &	translation,
		const Eigen::Quaternionf &	rotation,
		double	width,
		double	height,
		double	depth
	)

#include <pcl/visualization/common/shapes.h>

Create a cube shape from a set of model coefficients.

Parameters

[in]	translation	a translation to apply to the cube from 0,0,0
[in]	rotation	a quaternion-based rotation to apply to the cube
[in]	width	the cube's width
[in]	height	the cube's height
[in]	depth	the cube's depth

◆ createCylinder()

PCL_EXPORTS vtkSmartPointer<vtkDataSet> pcl::visualization::createCylinder	(	const pcl::ModelCoefficients &	coefficients,
		int	numsides = `30`
	)

#include <pcl/visualization/common/shapes.h>

Create a cylinder shape from a set of model coefficients.

Parameters

[in]	coefficients	the model coefficients (point_on_axis, axis_direction, radius)
[in]	numsides	(optional) the number of sides used for rendering the cylinder

// The following are given (or computed using sample consensus techniques -- see SampleConsensusModelCylinder)
// Eigen::Vector3f pt_on_axis, axis_direction;
// float radius;
pcl::ModelCoefficients cylinder_coeff;
cylinder_coeff.values.resize (7);    // We need 7 values
cylinder_coeff.values[0] = pt_on_axis.x ();
cylinder_coeff.values[1] = pt_on_axis.y ();
cylinder_coeff.values[2] = pt_on_axis.z ();
cylinder_coeff.values[3] = axis_direction.x ();
cylinder_coeff.values[4] = axis_direction.y ();
cylinder_coeff.values[5] = axis_direction.z ();
cylinder_coeff.values[6] = radius;
vtkSmartPointer<vtkDataSet> data = pcl::visualization::createCylinder (cylinder_coeff, numsides);

◆ createLine() [1/2]

PCL_EXPORTS vtkSmartPointer<vtkDataSet> pcl::visualization::createLine	(	const Eigen::Vector4f &	pt1,
		const Eigen::Vector4f &	pt2
	)

#include <pcl/visualization/common/shapes.h>

Create a line shape from two points.

Parameters

[in]	pt1	the first point on the line
[in]	pt2	the end point on the line

Referenced by pcl::visualization::PCLVisualizer::addLine().

◆ createLine() [2/2]

PCL_EXPORTS vtkSmartPointer<vtkDataSet> pcl::visualization::createLine ( const pcl::ModelCoefficients & coefficients )

#include <pcl/visualization/common/shapes.h>

Create a line shape from a set of model coefficients.

Parameters

[in] coefficients the model coefficients (point_on_line, line_direction)

// The following are given (or computed using sample consensus techniques -- see SampleConsensusModelLine)
// Eigen::Vector3f point_on_line, line_direction;
pcl::ModelCoefficients line_coeff;
line_coeff.values.resize (6);    // We need 6 values
line_coeff.values[0] = point_on_line.x ();
line_coeff.values[1] = point_on_line.y ();
line_coeff.values[2] = point_on_line.z ();
line_coeff.values[3] = line_direction.x ();
line_coeff.values[4] = line_direction.y ();
line_coeff.values[5] = line_direction.z ();
vtkSmartPointer<vtkDataSet> data = pcl::visualization::createLine (line_coeff);

◆ createPlane() [1/2]

PCL_EXPORTS vtkSmartPointer<vtkDataSet> pcl::visualization::createPlane ( const pcl::ModelCoefficients & coefficients )

#include <pcl/visualization/common/shapes.h>

Create a planar shape from a set of model coefficients.

Parameters

[in] coefficients the model coefficients (a, b, c, d with ax+by+cz+d=0)

// The following are given (or computed using sample consensus techniques -- see SampleConsensusModelPlane)
// Eigen::Vector4f plane_parameters;
pcl::ModelCoefficients plane_coeff;
plane_coeff.values.resize (4);    // We need 4 values
plane_coeff.values[0] = plane_parameters.x ();
plane_coeff.values[1] = plane_parameters.y ();
plane_coeff.values[2] = plane_parameters.z ();
plane_coeff.values[3] = plane_parameters.w ();
vtkSmartPointer<vtkDataSet> data = pcl::visualization::createPlane (plane_coeff);

◆ createPlane() [2/2]

PCL_EXPORTS vtkSmartPointer<vtkDataSet> pcl::visualization::createPlane	(	const pcl::ModelCoefficients &	coefficients,
		double	x,
		double	y,
		double	z
	)

#include <pcl/visualization/common/shapes.h>

Create a planar shape from a set of model coefficients.

Parameters

[in]	coefficients	the model coefficients (a, b, c, d with ax+by+cz+d=0)
[in]	x,y,z	projection of this point on the plane is used to get the center of the plane.

◆ createPolygon() [1/2]

template<typename PointT >

vtkSmartPointer< vtkDataSet > pcl::visualization::createPolygon ( const typename pcl::PointCloud< PointT >::ConstPtr & cloud )

inline

#include <pcl/visualization/common/impl/shapes.hpp>

Create a 3d poly line from a set of points.

Parameters

[in] cloud the set of points used to create the 3d polyline

Definition at line 54 of file shapes.hpp.

References pcl::visualization::allocVtkUnstructuredGrid(), and pcl::PointCloud< PointT >::points.

◆ createPolygon() [2/2]

template<typename PointT >

vtkSmartPointer< vtkDataSet > pcl::visualization::createPolygon ( const pcl::PlanarPolygon< PointT > & planar_polygon )

inline

#include <pcl/visualization/common/impl/shapes.hpp>

Create a 3d poly line from a set of points on the boundary of a planar region.

Parameters

[in] planar_polygon the set of points used to create the 3d polyline

Definition at line 82 of file shapes.hpp.

References pcl::visualization::allocVtkUnstructuredGrid(), and pcl::PlanarPolygon< PointT >::getContour().

◆ createSphere() [1/2]

PCL_EXPORTS vtkSmartPointer<vtkDataSet> pcl::visualization::createSphere	(	const Eigen::Vector4f &	center,
		double	radius,
		int	res = `10`
	)

#include <pcl/visualization/common/shapes.h>

Create a sphere shape from a point and a radius.

Parameters

[in]	center	the center of the sphere (as an Eigen Vector4f, with only the first 3 coordinates used)
[in]	radius	the radius of the sphere
[in]	res	(optional) the resolution used for rendering the model

◆ createSphere() [2/2]

PCL_EXPORTS vtkSmartPointer<vtkDataSet> pcl::visualization::createSphere	(	const pcl::ModelCoefficients &	coefficients,
		int	res = `10`
	)

#include <pcl/visualization/common/shapes.h>

Create a sphere shape from a set of model coefficients.

Parameters

[in]	coefficients	the model coefficients (sphere center, radius)
[in]	res	(optional) the resolution used for rendering the model

// The following are given (or computed using sample consensus techniques -- see SampleConsensusModelSphere)
// Eigen::Vector3f sphere_center;
// float radius;
pcl::ModelCoefficients sphere_coeff;
sphere_coeff.values.resize (4);    // We need 4 values
sphere_coeff.values[0] = sphere_center.x ();
sphere_coeff.values[1] = sphere_center.y ();
sphere_coeff.values[2] = sphere_center.z ();
sphere_coeff.values[3] = radius;
vtkSmartPointer<vtkDataSet> data = pcl::visualization::createSphere (sphere_coeff, resolution);

◆ getCorrespondingPointCloud()

PCL_EXPORTS void pcl::visualization::getCorrespondingPointCloud	(	vtkPolyData *	src,
		const pcl::PointCloud< pcl::PointXYZ > &	tgt,
		std::vector< int > &	indices
	)

#include <pcl/visualization/common/io.h>

Obtain a list of corresponding indices, for a set of vtk points, from a pcl::PointCloud.

Parameters

src	the set of vtk points
tgt	the target pcl::PointCloud that we need to obtain indices from
indices	the resultant list of indices

◆ savePointData()

PCL_EXPORTS bool pcl::visualization::savePointData	(	vtkPolyData *	data,
		const std::string &	out_file,
		const CloudActorMapPtr &	actors
	)

#include <pcl/visualization/common/io.h>

Saves the vtk-formatted Point Cloud data into a set of files, based on whether the data comes from previously loaded PCD files.

The PCD files are matched using the a list of names for the actors on screen.

Parameters

data	the vtk data
out_file	the output file (extra indices will be appended to it)
actors	the list of actors present on screen

Detailed Description

Overview

Requirements

Classes

Files

Functions

Function Documentation

◆ create2DCircle()

◆ createCone()

◆ createCube() [1/2]

◆ createCube() [2/2]

◆ createCylinder()

◆ createLine() [1/2]

◆ createLine() [2/2]

◆ createPlane() [1/2]

◆ createPlane() [2/2]

◆ createPolygon() [1/2]

◆ createPolygon() [2/2]

◆ createSphere() [1/2]

◆ createSphere() [2/2]

◆ getCorrespondingPointCloud()

◆ savePointData()