This is our second session with Dom who will be going further into the 3D equaliser programme. We will be learning to track this scene and put an Iron Man helmet on him.
We were asked to find places in the background we could track which had a very clear pattern that no where else has. This was so the programme could pick up on where the different depths of the video are.
Examples of patterns in the video I chose:
The very clear shapes and bright colours are different ways 3D equalised can dissever where the point is.
I also had to track the points that came off and on the video when the camera moved. This meant I needed to keep the same point tracked (here is was 18th point) and continue tracking once it came back on to the scene. Not make a new point 19.
In the 3D equaliser parameter adjuster you can optimise focal length and lens distortion parameters.
When the points are in I can use the sequence rotomation to view the points in a 3 dimensional space. This is very useful to make sure that the depth of field is correct. Shows you how the programme has calculated your points so that you can change any if there was a point that seemed way out of place, it could be then deleted.
Now having finished tracking the background, I focused on tracking different points on the mans face to that the Iron mask can pick up and detect the different between where his face is and the background. This is difficult as his face moves around/changes a lot more.
Here we were told to split the screen so that we were able to two different viewpoints of the mans face and also the mask. We would have to roughly guess where the track points meet on the mask so that the mask rotates accordingly. I found this part much more difficult that the tracking as its hard to fit the face in exactly where the mask is. I messed up this bit as I had selected the wrong points on this mask which meant It wasn’t tracking on the face correctly. I couldn’t fix the problem so I just had to listen to the rest of the lecture and return to it another time.
I found this lesson a lot easier than the last one as I had the programme working and was able to follow. This was a relief as catching up with no sound to the video was very time consuming. I think that once you understand how to make points that are tracked well, this is what sets you up to be a good matchmover and rotamater.