Playing around with noise and displacement

- So the next thing we can start to play around with is the noise itself. What we can do is if I click on the noise operator now we can play around with some of the settings in here as well. So happens if I don't want to look exactly like this noise that displaces it over here. I can actually play around with some of these settings up here, the parameters themselves. So for instance, what I could do is maybe this is too, is not fine grain enough.

Maybe I want this to be even grainier. So what I can do is just go and play around with some of these settings. So for instance, on period I'm gonna actually just take this down. And as you notice, as these kind of things change, you notice that this almost looks like we're looking through a glass window now. So I've made this kind of period 0.05 which means that our noise pattern is a lot further reduced. And that's partly because we are not displacing things in a kind of like kind of per area way.

Now we're doing it on a very kind of fine-grained way. We can play around with all of these different settings to basically get different effects. So if I kind of start to drag some of these around or some of these exponent ones around, there we go. It looks slightly different and I'm gonna keep that back at one just keeping it like that, So we can play around with how this is also displaced and what the kind of settings are as well. The one thing to also kind of keep in mind is something called seed.

Seed is basically just like what it is randomizing by. So at the moment, if I'm using the same image with the same noise and the same displacement, it will look the same as what is on your computer. But if you want something that's a little bit different this is just gonna run a little bit of a different program that basically has same kind of inputs with slightly different outputs as well. That's all that seed really does. But there's one thing you might also notice as well. You might notice that this displacement, it's almost like going in a line.

It's going almost from the bottom left to the top right and you can kind of see that on my t-shirt here. So it's kind of going up and to the left, to the right, sorry. Now why is that actually happening? Now one thing to keep in mind is the noise at the moment is black and white. And black and white is essentially made of three different channels. Red, green and blue. Red, green and blue added together make white when it comes to things like screens.

And what we can see is if we go to displacement, this is shifting things around from zero to one, sorry, from 0.1 and 0.1 in both directions based on how red and how green this source image is. Now because black and white are basically the same red and blue in all different cases. So if I'm white, it's gonna be the same red and same blue and same green. If I'm a gray, it's gonna be the same red, green and blue as well. If I'm a black, it's gonna be no red, no blue, no green.

These basically do the same job. It's kind of shifting them all in the same direction. But what we can do is if we go back to noise is we cannot make this monochrome. We can actually make it in various different colors. So I'm actually gonna take this monochrome and turn it off. And what this will do is you might notice this gives me a lot more of an even kind of displacement. This is going in all different directions now because our displacement is listened to not just the red and blue together but they're different kind of channels.

We can see here there are some bits which are red, some bits which are blue, some bits which are yellow together and they're all doing these different kind of jobs. So what I get from my output is a very different displacement. And again, this is something I can play around with. I can turn the monochrome on and off. You can see here how it's going up in a diagonal but if I turn it off, it feels a lot more kind of natural. And again, I can play around with some of this texture as well.

You know, just by doing this, moving it in and out, I get something that looks completely different very quickly. So this is also how we kind of even it out by turning off monochrome on noise.