Workflow Overview
CalibFX Lineup is a tool to automatically and accurately calibrate the offsets between a tracking system with its trackers and tracking origin, and the poses that are actually desired for rendering, like the camera sensor and the studio origin.
1. Pre-requisites
1.1. Lens Calibration
Since this solution is based on computer vision, the first crucial first step is to calibrate the lens. It has to be done using CalibFX Lens or EZprofile. The more precise the calibration the better the result, and the same calibration can be used afterward when rendering CG elements, so it is important to do this step properly.
1.2. Tracking System Setup
The line-up computed can only be as good as the data it receives. if tracking data is too noisy or not spacially consistent, the solver will give the best result it can to minimize the error over the samples, but it will not make the tracking magically better.
So before starting a line-up calibration, make sure the tracking system is properly set up and internally calibrated. If you roughly measure the offsets with a ruler you should get sensible results already. CalibFX Lineup will help you go the extra mile for a perfect fit.
2. Line-Up Workflow
Once everything is set up, the workflow is straightforward:
- place the cube in a convenient position
- prepare the data receival
- move the camera and take pictures of the cube for each pose
3. Referential Workflow
If you have already done the Line-Up on a camera and just want to reposition it in the studio (or change the studio origin), there is a dedicated workflow:
- place the cube and the camera at their new positions
- reload the Line-Up project for this camera
- take a picture and solve Studio Offset only
4. Troubleshooting
It is possible that the result is not as good as expected, or even completely wrong. CalibFX Lineup itself is rarely the cause of the issue, but it can help identify where the problem comes from.