Wednesday, May 2, 2012

Week 1 Lab 3

These are video renders of the tutorials for Lab 3, all of which involves motion tracking:


I did the first tutorial but never had the chance to render it.

The tutorial for the blood splat video can be considered the introduction, and perhaps a foreshadow, for motion tracking and these tutorials expanded on them. Honestly, I've always been curious as to how movies had objects which was animated so nicely and realistically with the movements of the camera. Now, I can see how and these tutorials gave me the chance to try it out. The first two tutorials that I did was rather straightforward and simple. I had no difficulty understanding what was going on and the tutor made a rather good job being thorough with his explanations. It was the third one in which I encountered quite a number of problems.

Right at the beginning, when selecting the two points for the initial motion tracking, the one set to track a trio of rocks had difficulty keeping track of the movements, unlike the tutorial. Constantly, the motion tracker just went erratic and began jumping around and even after making adjustments to the size of the detection box, it was still jittery. I eventually resorted to using a small rock which the tutor used initially before changing. It was still not perfect however but much better than the problem I encountered. Hence, I bore with it. The other point, on the other hand, was steady the whole time.

Eventually, when parenting the houses to the motion tracker, I was able to see that despite all I did to stabilize the motion tracking of the first point, it was still noticeably jittery. This can be seen in the video, where the house, the sky and the shadows shook up and down as the camera moves up. I couldn't fix the problem so, I left it as it is. I'll try to avoid such an error next time.

Other than that, the tutorial was very helpful and nonetheless, useful. It was somewhat fun making these videos and the adjustments layers were particularly familiar to me, once again due to experience with Photoshop.

As for the final part of the lab, I picked the Kick Ass video, mostly because I have seen the movie:


Making this was rather easy and quick, especially after my tutor showed us how to use perspective tracking for track motion.  Initially, I had difficulty hiding the TV footage for after and before the TV scene but I received help from my friends on that matter. As it turns out, the video can be trimmed by resizing the rectangle on the timeline representing the layer. Aside from that, I also had a few difficulties with the tracking as I want to make it appear as close to an actual television as possible. Whenever the screen appeared out of the TV border, I will often redo the tracking. Otherwise, this one was rather fun to do.

As a little joke, I used the same footage for the television screen, making it seem like the characters are watching themselves watching TV.

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