This term we have primarily been learning about greenscreen. How to correctly shoot footage on it and how to edit it in Nuke.
We also spent a few classes going over the basics regarding cameras, tools and safety measures on set.
I was unable to attend class this week, so I did not have access to the footage of Carlotta, therefore I used what was already available to us in the Nuke file and re-did the shot.
Firstly, I filled in the correct camera settings in the CameraTracker node, then I needed to do a rough roto around the man and applied it as a mask. Then I tracked the points.
Then I needed to create a camera from the scene, which now has the correct movement.
I denoised the plate and added a keylight. I was having an issue with applying the denoise, but I managed to get it to work.
To remove the tracking markers I did another roto of the backround, then roughly tracked them, then we can merge(stencil) with the roto over the new footage.
Next we started working on the backdrop. I used the footage from our tutor, he explained how you can ‘breakout layers’ if you are importing from photoshop, to get the layout above.
This meant that the object in shot can be separated, we applied a premultiplication if the alphas were looking strange. Then he showed us how you create a card and start building the scene in 3D space, as the layers are separated we can have various cards at different positions.
Then compiling them all together with a scene node, and the scanline render.
Lastly the foreground footage needs to be lit to match the background, our tutor showed us the way he did this, using the hue and co,lour correct nodes.
He also introduced us to a lightwrap.