There are times when using controlnet, where I’d like the ability to apply a levels adjustment to the controlnet image. An example would be applying a Gaussian blur to the controlnet image and then apply a levels adjustment node to the same image to boost / reduce black and white values.
that may sound like annoying, but try Gemini or grok (gemini is better at custom nodes), I have made like a 100 of them, Gemini is really good, you give it a short explanation and 10 minutes later, you have your node working in a workflow already. I had 2 or 3 nodes I had to debug, but for the rest they worked right out of the box. I believe I have a node that has some component you’re looking for but it’s for a difference mask on image batches. I swear Gemini made it in just one prompt, no issues, works perfectly
