For this weeks class we have worked with how to get rid of green screen and add our own backgrounds. During the classes we have talked about many different ways on working with green screen. for example we worked with the Keylight which for many people already is a well known node to work with. it is quite a standard green screen removal node and also a quite simple one. In this node you use one key that selects the green of the green screen to remove it from the scene but by using this you can see in the alpha that is does not perfectly remove the green screen. One other technique we used was with the IBK Colour and IBK Gizmo node this node system is a little bit more clean then using the keylight. Using the IBK nodes you can use the IBK color node to use the plate and try to create as close to a clean plate as u possibly can and then comp this back into the gizmo to get the results of the removal of the greenscreen.
For this weeks class we had to work on some homework for the next week. For this homework we needed to recreate a video that Gonzalo already made, for this video we got given the background plate and the foreground plate. When looking at this homework I went back into Gonzalos tips and tricks file and choose to work with one of the examples he gave during the classes (look at the images above).
Using the example for the green screen removal I started working on how to implement this in my own work. I started off by removing the greenscreen using the IBK nodes as given in the example then I used the core and gave it a filtererode to clean up the edges a bit more. Aside from that I also used a keylight to minus despill from the original footage and desaturated to remove unwanted colors. one more important part was to move the particles from the background and copy it on top of the foreground. I did this by using a grade on the background and changed the White and Black point values and merge this over the end scene.
Looking back at my work there are a few things that I had problems with or that I would like to change. One of the things is even though I have quite some detail in the hair it is still missing some of the nice glowing hairs on top and on the sides where it is blowing. I have looked at this for a long time but did not manage to get these hairs back. I need to work on this in the future. Another thing is that if you look at the fore and background together it looks a bit off. My background is quite green/dark and the Girl is quite bright and orange, this makes her stand out from the background. But overall looking at my video I think I did a good job in trying to match Gonzalos video.