Original subtitles

So now that we have finished all the clips for this module,

let's take a look at what we have learned.

First, we looked at the difference between noise and grain.

So noise is primarily found in digital footage versus

grain is found in traditional film stock.

Now the two terms can be used somewhat interchangeably, so don't be alarmed.

But in most cases, they are referring to digital footage.

Now we did look at ways to fine-tune our nodes,

and that was really to still retain the details in our

image while denoising our plate.

Next we looked at white balancing images to rid of the color cast.

So color casts are introduced primarily during filming,

and they can be caused by gels that are used in the lights,

or maybe the image wasn't white balanced right to begin with.

Now we want to get rid of them so that we get the best green screen

possible to extract those mattes and the keys.

Now when we white balance the images,

unfortunately that did throw off our luminance,

so we did review how to refine the luminance so that

again we get the best image possible.

Next we looked at operator functions.

We looked at the mask, the minus, the multiply and the plus.

The mask will reveal the B input of an image

because it goes through the A input.

So wherever the alpha is, the B input will be visible.

The minus will subtract the B input from the A input.

Multiply will multiply A input times B input.

And the plus will add the two images or the values of those two images together.

We also looked at using operators and keys to even out the backing color.

So it's really important to have an even green screen.

It's not always possible on set.

So sometimes we get those wrinkles, some uneven lighting.

Those are fixable, it's a little bit more work in post,

but we can do something to make them a little bit better.

So thanks for joining us for this particular module.

I really look forward to working with you on our next one.