Single camera calibration with dot pattern

Hi, I am trying to calibrate a camera with a single image of dotted patterns. There are M dots in the image, and I have obtained the coordinates (in pixels) of the centroids of all dots. This is my imagePoints array of size M by 2. I also know the physical coordinates (in mm) of the centroids of the dots. How can I use that information to undistort my image? I do not know how to work around the fact that size(imagePoints, 3) must be greater than 2 when using the estimateCameraParameters function.

[karim botros]

did you solve it ?