Computing a Projection Matrix with Image/Object Points

Question

I've been trying to understand how to compute a projection matrix using image points and object points (3D and 2D points), but I can't seem to find a clear understanding of how you'd do this. I have a function as follows:

void calculateprojectionmatrix(Mat image_points, Mat object_points, Mat projection_matrix)

I've tried researching solutions for this (preferably in a C++ implementation), but can't find any clear explanation, and no background resources I can find seem to shed enough light on the topic. Any help would be greatly appreciated!

Answer 1

Given that you're using openCV you may want to scan some of the OpenCV docs.

Say, like initCameraMatrix2D ?

You might want to read Find 2D-3D correspondence of 4 non-coplanar points