In this week we started by the technique of PATCHING in Nuke. These patches are helpful for removing he objects from the plate itself, where these patches are 3D by itself. We add these patches on the Card taken from the 3D trackers which we did in the last lecture. There are various techniques for doing this.
Having the card that is taken from the specific 3D Track is the most important aspect as all these patch are about to sit in the given card / points.
The rotos are done on a particular frames, where we have to be very cautious about the frame that we select as these frame hold carry on to the whole plate. After cleaning up / rotoing (in this case i have roto painted the plate to get my desired look), these roto is then send on to a frame-hold which carries it to the entire plate with the help of card.
We also looked on how to do the patching with the help of UV method. In this method, we stabilize the video. This is done by transferring the plate onto the card, and the the plate is changed in to the format of UV. After which we can roto paint in again, and carry the rest to get the patching done.
PROJECTION WITH HELP OF POINT CLOUD
Pointcloud helps in making the scene 3D through which we can add grids/cards to the points.These point help us to get a 3D visual representation of the plate. With the help of these points which we got after analyzing and tracking the points we can add 3D objects to these points.
We can also view these points into a 3D geometry, with the help of poisson mesh. Poission mesh converts these points into a typically 3D object.
Along with the poission node we can also visualize these points by baking these point created by the point cloud generated. For getting these points we have to bake the points which can be obtained by selecting the vertices of these points and baking them into geometry mesh after grouping the points selected.
Model builder is another technique by which we can do a proper visualization. Poission method maybe easier than model builder technique, but its not quite efficient when compared. In Model builder method we have to add cards and grids same like how we used to do the corner pin method.