P: Negative prompting

[EricEm]

In the text to image part, I didn't find a place to cancel prompts like in stable diffusion. Often we have artifacts with double faces or eyes in the wrong places. It depends on the channels I think but it could be efficient and necessary to add this function. Or maybe add a basic lexicon for prompts if we have to use No in front of cancels or others basic operations.

Thank you for your job, im a teacher and i think you are the best to create an democratic useful app for commons users

Eric

[droopydog500]

Hello @Tom Savage,

Whats the correct term for "No Human"

It depends on what the rest of the image is. For example, if you have an area where humans might normally be but you want no humans, you might use words like "desolate" or "deserted".

If you mean something else, please explain.

My best,
    droopy

[Nick25579035by7v]

A negative prompt option that specificly excludes the prompt listed there in the generated image. I find myself prompting 'no light' and it seems like firefly sees 'light' and then always adds a light to the image. With this function, which already exists in other AI generators you can be much more specific.

[Joakim38709062sei6]

Being able to NOT include things in image generation would be nice. For instance: "Cat without hat" now gives a cat with a hat. Describing what is not desired in the image seems like a nice feature 🙂

[droopydog500]

Hello @Joakim38709062sei6,

Thank you for your message.

The model does not understand the concept of a word being negated by the word in front of it. So using "not [X]", "no [X]", "exclude [X]", "with no [X]", and "without [X]" does not work. As you observed, it ignores the negation word and adds to the image the thing you are trying to avoid.  You basically need to find "positive" words and phrases telling the model what you want to see rather than telling it what you do not want to see.  Such as "flat land" rather than "no mountains" or "desolate" rather than "no people".  If I am not sure how to describe something I want to exclude in a positive way, I will ask Google Gemini or ChatGPT for ideas.  Just be aware that when they give prompts, they are usually too wordy and conversational, so you have to edit them, but they are good for ideas.

Thanks,
    droopy