This week we saw an advance projection.
We saw simple way of using roto paint, first we needed to find a reference frame, then add a frame hold node, then do your roto paint and under the paint add one more frame holder. Under that, added a premult, after which the 3D project node for the projection’s camera, added a one frame hold on the same frame, then pass the camera from it. Added the Scanline render add a camera without the frame hold, at last merger it with the plate.
Gonzalo showed us the importance of taking the right reference frame. Without the right reference frame, the projection comes out blurry and pixelated. If you see the small door we can see the differences between taking the wrong and right reference frames.
The next thing we were taught was how to project twice in the same areas.
We also learnt about different types of Projection Artefacts
Smearing: The image looks fine from one angle but the image smearing or streaks across the object.
Doubling: This is when the projection multiplies in the geometry.
Resolution: Not enough resolution in the painting because the camera gets too close.
We learnt how to change a scene from day to night, but the important thing was how to zoom in or out with the parallax (the motion of things close to you moving faster than those far away).
As our homework assignment, we had to roto the wall and remove the tracking points in the Garage video and add some stickers or drawings on the Greece street video.