- "Reference" and "Measurement" point, what is the difference ?
A "Reference Point" fulfills two functions :
1. Its position on 2D images allows the 3D position of cameras to be calculated.
2. Once the 3D position of the cameras is determined it is then possible to calculate the 3D positions of the Reference Points. A Reference Point can also be measured.
On the other hand, a "Measurement Point" is not used to calculate the 3D position of the cameras, it is calculated based on the position of the cameras and can only be "measured".
Once the 3D position of the cameras has been determined, it is useful to define "Measurement Points" because calculations and the 3D addition of a point is instantaneous.
1. Its position on 2D images allows the 3D position of cameras to be calculated.
2. Once the 3D position of the cameras is determined it is then possible to calculate the 3D positions of the Reference Points. A Reference Point can also be measured.
On the other hand, a "Measurement Point" is not used to calculate the 3D position of the cameras, it is calculated based on the position of the cameras and can only be "measured".
Once the 3D position of the cameras has been determined, it is useful to define "Measurement Points" because calculations and the 3D addition of a point is instantaneous.
Last Updated ( Tuesday, 24 March 2009 09:37 )