For the first lesson of this module, we went stright into looking at advanced tools for VFX within Nuke, with looking at Nuke in a 3D perspective. So far I had only been using nuke in 2D so this was a new development for me,
First, we looked at lens distortion. We used a checkerboard image as this was the most simple way to process what this node could do, as it was only working with striaght lines.
Here we can see it has detected the straight lines when we click detect, but they slightly are distorted at the sides by curving.
When we click ‘solve’, it strightens these lines to create a flat surface of the lens, as we can see the change of the lines in green.
We then looked at the 3D function node ‘Scaleline render’ in nuke by pressing tab on the viewing screen, on a scene with the moon.
In this function, we can add a camera, and select this on the viewport to see through the camera’s lens.
this means we can render out a 3D scene of models through these, and adjust where they are on the axis.
We can add models through the ReadGeo node, and therefore render these out through any angle, and even animate the camera’s movement around these.
In the 3D screen we can also add lighting, adjust it’s placements and colours in which it inputs onto the 3D scene we create.
We then looked at camera tracking within an actual scene, and how this camera tracking can be used as a 3D feature within nuke. We were given a scene of a street, and camera tracked a specific part of the scene, We could then increase the amount of features, or points, in the scene that the camera was tracking. We increased the amount of features to 1000, so many points of this scene were tracked as it moved.
When pressing track nd solve we see the completion of the tracking of these points in motion when we go through the scene.
We can create solid shapes to appear on our scene, we used a checkerboard plate as an example. We could rotate it’s position by swiching to the 3D screen, and moving it within the scene.
When you press tab and swich to the 2D scene, you can see these appear within the scene of the street.