Camera Center from rvecs and tvecs

asked 2020-09-28 06:59:48 -0500

Hey you people of knowledge,

i'm trying to find the camera center aka the origin of the camera coordinate system. As of my understanding, the computed rvecs and tvecs are used in a transformation from image coordinates to world coordinates, so i think i need an additional step to geht to the camera center. But i can't find it. Maybe someone could lead me in the right direction?

Greetings and thanks in advance,

Patrick

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the computed rvecs and tvecs

computed from what ?

are used in a transformation from image coordinates to world coordinates,

no, there are no "world" coordinates. it's mostly from camera to image/object

(and you don't know the location of the cam or object in the world, unless you add gps or other 3rdparty information)

berak gravatar imageberak ( 2020-09-28 08:12:15 -0500 )edit
2

Sorry, my bad. I'm using a calibrateCamera and a charuco Board. This function returns a camera matrix as well as rvecs and tvecs per image. What i meant by world-coordinates is the object based coordinatesystem, so with the lower left corner of the charuco board as origin.

Scheolin gravatar imageScheolin ( 2020-09-28 09:26:43 -0500 )edit