This week we saw to add a CG object to a plate and how to colour-correct to match it to the plate. So we have to complete the garage for this month and we need to add artefacts on the walls and or the floor.
Gonzalo started off the class by going throw what we have done with the plate and how we have achieved it like, match move and clean up and roto. Then moved to a basic grade match, for example, we took 2 different colour plates and match the colour of one plate to another by adding the grade node under the plate which you want to change the colour for then selecting the white point from the main plate then selecting the gain from the plate you want the colour from while picking the colour you make sure you press the command and shift. Then we tied the same things with a different plate but this time we used the black point and the lift.
There are different parts in the nodes and Gonzalo took us over all of them and their use. The first stop was the Master CG CC.
So we started with the basic grade match with the help of grades before we start messing around with the Multipass, following the same process we did on top. While picking up the colours you should make sure that you pick not from the darkest or the brightest. We used these nodes to do the basing colouring.
Next was Multipass Comp, the 3d moulded was rendered in Arnold so it was Armold Multipass. The main thing about this is that, if you only needed to change something then only change it otherwise you should not teach it just because you have the option to. For this, we just changed only the specular direct and specular indirect, so that the machine refutation is lowed and as a glow to it. We use the Plus to merge to add them.
After that came ID and adding Re-texter, first we select the area to which you want to add the texture then get the key light tool and invert. make a Shuffle node then give it to STMap secure and make sure that the channels are on RGB not all, for the texture add grade and do the grade match then added a copy node and then premult then before the texture plate is added to the Master CG CC add a Multiply so that you control the effect on the texture.
Next was the shadow, which is an important part of the CG it gives a feeling that the object is not flowing or not there. So whenever you. added a shadow you needed to use multiply for the merger. We used the AO in the Shuffle and Shadow mask and the Shadow Matte added the shadows
Relighting, we used the Normal pass and the Position pass passing it to the PP mask hub this helped to get the alpha for the object using screen merge giving a grade to light it up.
Motion blur, if you have the Motion vector in your render you can do the changes on that otherwise, put a remove node but the optraion is keep that passes to the motion blur 3d plugin the camera added the vector blur. Added Grain and the Chroma aberration and defocus to make sure that the CG match the plate exactly. Using the defocus node we did the defocusing and added the remove node and naked to keep for the grain, we used the Grain node and matched the RGB add the keymix.
For the homework, we had to add more artefacts on the wall and the around the plate.