i have done a “camera calibration” and retrieved now
the Rotation and Translation - Matrix (from world coordinate to camera
(== exterior orientation). i loaded this matrix into the modelview-matrix.
the interior orientation (camera coordinate to sensor coordinate), which
a) the focal length of the camera f
b) the “image main point” (the point where to optical ray through the center
projection intersects the image plane perpendicular) (cx, cy)
c) scaling factors (for each axis) dx, dy (ratio “camera coord / sensor
Now my question:
How do i have to generate the projection-matrix (GL_PROJECTION) from the
parameters f, cx, cy, dx, dy ???