could add a new function noise() like imageMagick provided?

[ouonet]

could add a new function noise() like imageMagick provided?
thanks.

[lovell]

Hello, libvips provides a gaussnoise function for this, which we'd need to expose.

It would make the most sense, i.e. will be a bit easier, to add this after #470.

[kimmobrunfeldt]

This would be helpful in our use case as well.

[jbveepee]

This feature would be useful in our use cases as well.
The sharp documentation says it's straightforward if libvips has the function...
I have no experience with C++ but I'll gladly take a look at how to expose the function if you think it has a chance of succeeding. :-)

[lovell]

This was added via #2527 and included in sharp v0.27.1

https://sharp.pixelplumbing.com/changelog#v0271---27th-january-2021

// Generate RGB Gaussian noise
await sharp({
  create: {
    width: 300,
    height: 200,
    channels: 3,
    noise: {
      type: 'gaussian',
      mean: 128,
      sigma: 30
    }
 }
}).toFile('noise.png');