chrisgoringe-cg-noisetools/README.md

Noise Tools

Mix Noise

This node takes two noise inputs and produces a weighted mix, optionally with a weight mask.

Note that this is not the sort of noise masking you want for inpainting - the sampler will try to remove noise globally.

Inputs

• Required - noise1 - the original noise source.
• Optional - noise2 - the secondary noise source. If not connected, it is zero noise.
• Required - weight2 - the weight given to the second noise source. The first noise source has weight 1-weight2.
• Optional - mask - multiply weight2 by the mask values. The mask will be rescaled to fit the latent.
• Required - renormalise - should the noise be renormalised to mean of zero and stdev of one after mixing. Normally yes.

Outputs

• noise A noise generator

Usage

Generating small variations

• Connect two noise sources to the node, and set weight2 to 0. Set the noise sources to have (different) fixed seeds.
• Try different seeds on the first source until you get an image you like.
• Increase weight2 slowly (a weight of 0.2 is pretty big) to get variations on the image.
• Try different second seeds as well

Masked noise

This is a bit more experimental!

• Follow the first two steps above.
• Once you get an image you like, copy it into a Load Image node and edit a mask to pick the parts of the image you'd like to vary the noise for.
• Connect the mask to the mask input, and then follow the third and fourth steps above.