Class representing an AR tag detected in an image. More...

#include <Tag.h>

Public Member Functions
	Tag (MarkerPattern marker, cv::Vec3d rvec, cv::Vec3d tvec)

cv::Vec3d	getRVec () const
	Gets the rotation vector of the tag.

cv::Vec3d	getTVec () const
	Gets the translation vector of the tag.

cv::Vec3d	getCoordinates () const
	Gets the 3D coordinates of the tag with respect to the camera.

MarkerPattern	getMarker () const
	Gets the Marker associated with the tag.

Detailed Description

Class representing an AR tag detected in an image.

This class is simply used as a way to represent the result of a detection, and can provide location and orientation information. You should likely never need to construct a Tag yourself; this is done internally by the detection code. All tags are immutable after construction.

Member Function Documentation

◆ getCoordinates()

cv::Vec3d AR::Tag::getCoordinates ( ) const

Gets the 3D coordinates of the tag with respect to the camera.

The return value is currently the same as getTVec, but this function is provided for convenience as its name is more intuitive.

This function will return real world units; these are dependent upon the camera parameters you are currently using.

◆ getRVec()

cv::Vec3d AR::Tag::getRVec ( ) const

Gets the rotation vector of the tag.

This vector defines a line through the origin around which points are rotated to transform them from the object reference frame to the camera reference frame; its length is the angle of rotation. You will likely not need this for most uses.

◆ getTVec()

cv::Vec3d AR::Tag::getTVec ( ) const

Gets the translation vector of the tag.

This vector defines the translation necessary to transform points from the object reference frame to the camera reference frame. For the center of the tag (0,0,0), this vector is in effect the 3D coordinates of the tag relative to the camera.