Module opencv::viz

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3D Visualizer

This section describes 3D visualization window as well as classes and methods that are used to interact with it.

3D visualization window (see Viz3d) is used to display widgets (see Widget), and it provides several methods to interact with scene and widgets.

Widget

In this section, the widget framework is explained. Widgets represent 2D or 3D objects, varying from simple ones such as lines to complex ones such as point clouds and meshes.

Widgets are implicitly shared. Therefore, one can add a widget to the scene, and modify the widget without re-adding the widget.

// Create a cloud widget
viz::WCloud cw(cloud, viz::Color::red());
// Display it in a window
myWindow.showWidget("CloudWidget1", cw);
// Modify it, and it will be modified in the window.
cw.setColor(viz::Color::yellow());

Modules

Structs

  • Camera
    This class wraps intrinsic parameters of a camera.
  • Color
    This class represents color in BGR order.
  • KeyboardEvent
    This class represents a keyboard event.
  • Mesh
    This class wraps mesh attributes, and it can load a mesh from a ply file. :
  • MouseEvent
    This class represents a mouse event.
  • Viz3d
    The Viz3d class represents a 3D visualizer window. This class is implicitly shared.
  • WArrow
    This 3D Widget defines an arrow.
  • WCameraPosition
    This 3D Widget represents camera position in a scene by its axes or viewing frustum. :
  • WCircle
    This 3D Widget defines a circle.
  • WCloud
    This 3D Widget defines a point cloud. :
  • WCloudCollection
    This 3D Widget defines a collection of clouds. :
  • WCloudNormals
    This 3D Widget represents normals of a point cloud. :
  • WCone
    This 3D Widget defines a cone. :
  • WCoordinateSystem
    This 3D Widget represents a coordinate system. :
  • WCube
    This 3D Widget defines a cube.
  • WCylinder
    This 3D Widget defines a cylinder. :
  • WGrid
    This 3D Widget defines a grid. :
  • WImage3D
    This 3D Widget represents an image in 3D space. :
  • WImageOverlay
    This 2D Widget represents an image overlay. :
  • WLine
    This 3D Widget defines a finite line.
  • WMesh
    Constructs a WMesh.
  • WPaintedCloud
  • WPlane
    This 3D Widget defines a finite plane.
  • WPolyLine
    This 3D Widget defines a poly line. :
  • WSphere
    This 3D Widget defines a sphere. :
  • WText
    This 2D Widget represents text overlay.
  • WText3D
    This 3D Widget represents 3D text. The text always faces the camera.
  • WTrajectory
    This 3D Widget represents a trajectory. :
  • WTrajectoryFrustums
    This 3D Widget represents a trajectory. :
  • WTrajectorySpheres
    This 3D Widget represents a trajectory using spheres and lines
  • WWidgetMerger
    This class allows to merge several widgets to single one.
  • Widget
    Base class of all widgets. Widget is implicitly shared.
  • Widget2D
    Base class of all 2D widgets.
  • Widget3D
    Base class of all 3D widgets.

Enums

Constants

Traits

Functions

  • compute_normals
    //////////////////////////////////////////////////////////////////////////////////////////// Computing normals for mesh
  • get_window_by_name
    Retrieves a window by its name.
  • imshow
    Displays image in specified window
  • make_camera_pose
    Constructs camera pose from position, focal_point and up_vector (see gluLookAt() for more information).
  • make_transform_to_global
    Takes coordinate frame data and builds transform to global coordinate frame.
  • read_cloud
    Parameters
  • read_mesh
    //////////////////////////////////////////////////////////////////////////////////////////// Reads mesh. Only ply format is supported now and no texture load support
  • read_pose
    Parameters
  • read_trajectory
    takes vector<Affine3> with T = float/dobule and loads poses from sequence of files
  • unregister_all_windows
    Unregisters all Viz windows from internal database. After it ‘getWindowByName()’ will create new windows instead of getting existing from the database.
  • write_cloud
    Parameters
  • write_pose
    Parameters
  • write_trajectory
    takes vector<Affine3> with T = float/dobule and writes to a sequence of files with given filename format

Type Definitions