Anisotropic diffusion

Okay, imagine you're playing with clay. You know how you can squish it and mold it however you want, right? Now, imagine the clay is kind of like an image on your computer.

Anisotropic diffusion is like a magic tool that helps you make changes to the image. It looks at the image and decides how much to squish the clay in each area to make the image look smoother.

Here's the thing, though - it doesn't squish the clay evenly all over. Instead, it looks at each little bit of the image and decides how much to squish based on what's around it. It's kind of like a puzzle, where each piece needs to fit with the ones next to it.

So, if there's a big difference between the color or brightness of one area to the next, anisotropic diffusion will squish the clay little in that area and a lot in the other area to make it all look smoother. But it won't squish it too much, because then you'd lose the detail in the image.

So, you end up with a smooth, better-looking image that still has all the important parts. And all because of this magic tool called anisotropic diffusion!