Stereo calibration using known locations

asked 2014-06-13 06:21:27 -0600

cv_user
1 ●1

updated 2014-06-13 06:26:50 -0600

berak
32993 ●7 ●81 ●312

How do you calibrate a camera using known 3D points and their corresponding 2d image locations.

Using a chessboard is easy, is it the same method for real world points.

How then do you then get the cameras to output data in that coordinate system, so a point on the images gives the same 3D point via triangulation as was used in the calibration?

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answered 2015-12-23 04:18:22 -0600

nbsrujan
11 ●2 ●2

No need to calibrate cameras only with Chessboards. Instead if you know object coordinates in world coordinate system(can be object) and corresponding image coordinates, it is straightforward to calibrate camera and estimate intrinsic parameters and distortion parameters of camera. You can use calibrateCamera() function. You also get rotation of translation of camera in world's space of all instances.