For the color match exercise, we had to pick two different images, and make one look like is in the same place as the other. Using various techniques like white balancing both images for then grade it and color correct it. I did three examples of it and here you can see them.
IMAGE 01
This was the first attempt and as you can see is not as good as I would expect, but the next images I feel like are better executed. On this one, I did not plan to put one image on top of the other but to see better the result I had to.
IMAGE 02
This one, I tried to place the Eiffel tower next to the Big Ben. The scale on the eiffel tower is a bit of, but if I had used the real scale probably we would not see much of it since is much bigger, we would only see a small part of it.
IMAGE 03
This is the last image, I think I did a better job on this one. I roto out the globe and put it in the background of the plane.
Planar track is a technique similar to the 2D tracking that we learn before, this one instead of selecting an image point to create a track, you create an alpha mask that tracks the shape of it. After this with a cornerpin we can stick it to the corners of the shape and merge it over to the original plate.
This is the original plate, where I’m going to swap some posters for others.
Here you can see the end result:
This is the node editor, we can see the structure where we create a mask and then generate cornerpins for each of them.
This is the node editor structure. First I reformat and denoised the track because it was in 4K. And with the denoised plate I create all the trackers. And stick it to the track with transforms matchmove.
At the end I merge them all together on the original plate to write it out.
Rotoscoping was a complete new practice and skill for me, I never did anything related to it and also I never personally research for it like I would do with other skills. So we first started with a little assignment about rotoscoping that was to roto a shot at least for 80 frames.
I loved the learning process behind the first classes we had with Aldo, it was all new and I enjoyed the hard work of rotoscoping so many frames for the first time. This video is the plate I decided to rotoscope. Wich Gherardo shot when we were able to go outside and took some footage for the course.
PLATE
The first thing that we needed to do was reformat and write out the sequence. Because we recorded the plate in 4K and we only are gonna render out the images in full HD 1920×1080, we reformat the plate so its easier to work with.
This is the reformat where we take the actual size from the plate and select the desired output format in this case we can see that is 1920×1080. Those are the only two settings that we needed to tweak.
After reformat we used the write-out node to render out the plate in image sequences. We only select the file directory that we want to save and click render order, where we can select which frames to render.
Next step was to start the roto process. This is the set up I had once I finished all the process.
We can see that I have various roto nodes for different parts of the roto, in this case, I’m rotoscoping myself. As I will show you a bit later in this case because is the first time I do it I obviously make some mistakes, the biggest one is not using a lot more shapes for the roto.
For the node editor, we can see 3 major parts. The first part is where the roto is. The green nodes are for creating shapes and the orange ones are some filters that we apply to the roto to make it look a bit better, smoothing the edges and blurring them out. The GREY BG where we create a grey background and the OVERLAY that is the color of the mask.
A part from using only one shape for the head, one for the torso, one for the leg and on for each arm I’m happy with the result of my first rotoscoping exercise. So here are the results, first we have the mask.
MASK
Here we can see the alpha channel.
ALPHA
And here we can see the plate with the grey background but I don’t know why it won’t embed the video so just follow the link.
As you could see, the plate is a bit shaky, this could be resolved with a tracking and stabilizing the footage but because we learn this technique a bit later in the course I could not apply to this project as I had already create the mask for the roto. But for the next roto project I already apply this techniques.
ROTO 02
So same, as before the first things we need to do is reformat and write out the image sequence. But in this case I also track and stabilize the footage so I have a cleaner plate to work. And for the node editor we can see that the structure is basically the same but we only have one roto node. This is because in this case, instead of having different roto nodes I decided to use only one and create inside of the node more shapes.
We can see if we go inside of the roto node, that there are a lot more shapes than just 4 or 5 that I used for the previous roto project. We can see also the shapes on the plate.
And here we can see the results. This roto was a lot smoother to do than the other one, it has a bit less movement but faster so I had to deal with other problems like the hair in this case, I could have done it better with luma key and other techniques to roto the hair but as before with the tracking and stabilizing, we didn’t do that at the moment so I will leave it for the next roto project.
This is the original plate:
PLATE
Here we can see the mask:
MASK
And the grey background:
GRAY BG
For the alpha it wont let me embed the video so just follow the link:
