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It seems to be a requirement to have a model trained on a large number of explicit images to generate correct anatomy. While people have tried going from a bas

It seems to be a requirement to have a model trained on a large number of explicit images to generate correct anatomy. While people have tried going from a base model to a fine tuned model based on explicit images, I wonder if there are people are attempting to go the other way round (train a base model on explicit photographs and other images not involving humans; then fine-tune away the explicit parts), which might lead to better results?

portaouflop 2y ago
You can usually remove the NSFW stuff with some negative prompting. IMO finetuning is a waste of time unless you do cutting edge stuff. Loras are just as powerful as a finetuned model and you can train one in minutes even on consumer hardware.
- robko 2y ago
  > Loras are just as powerful as a finetuned model and you can train one in minutes even on consumer hardware. Do you have some more details on training a LoRA in minutes? Last I tried, it took several hours on an RTX 3090, but I am sure there have been improvements since then.
  - portaouflop 2y ago
    Not really, but there are lots of guides around, for example https://civitai.com/models/351583/sdxl-pony-fast-training-guide https://civitai.com/models/351583/sdxl-pony-fast-training-gu... Tbh I mostly use loras others trained, there are hundreds around for all kinds of things
revscat 2y ago
Why would you do this?
- supriyo-biswas 2y ago
  Because when I’m generating photographs I don’t want to create something with grotesque hands that are melting in with their other hand, or their face, while still having a model that is not meant for porn generation?
  - revscat 2y ago
    You seem to be equating nudity with pornography, though. I tend to generate images that are nudes first in order to get aspects such as lighting and environment correct. Then i is may or may not add clothing. Is this process objectionable to you? If so, why? It’s also possible I’m simply misunderstanding what you’re objecting to.
    - supriyo-biswas 2y ago
      I’m not “objecting” to anything, it’s just that companies putting out a model capable of generating nudity would invoke some controversy they’d rather be out of.
viraptor 2y ago
Where does that idea come from? Models can generalise well - if you request photorealistic animals dressed in something specific, you'll get it even though there's likely no training image with that example. People wear enough close fitting clothes that the general form is easy to find. I first heard the "we need naked images to generate good clothed images" when SD3 came out and suddenly it's everywhere. But it just doesn't make any sense to me and as far as I know it wasn't explicitly practiced in previous popular models.
- deleted 2y ago
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portaouflop 2y ago

You can usually remove the NSFW stuff with some negative prompting. IMO finetuning is a waste of time unless you do cutting edge stuff. Loras are just as powerful as a finetuned model and you can train one in minutes even on consumer hardware.

robko 2y ago
> Loras are just as powerful as a finetuned model and you can train one in minutes even on consumer hardware. Do you have some more details on training a LoRA in minutes? Last I tried, it took several hours on an RTX 3090, but I am sure there have been improvements since then.
- portaouflop 2y ago
  Not really, but there are lots of guides around, for example https://civitai.com/models/351583/sdxl-pony-fast-training-guide https://civitai.com/models/351583/sdxl-pony-fast-training-gu... Tbh I mostly use loras others trained, there are hundreds around for all kinds of things

revscat 2y ago

Why would you do this?

supriyo-biswas 2y ago
Because when I’m generating photographs I don’t want to create something with grotesque hands that are melting in with their other hand, or their face, while still having a model that is not meant for porn generation?
- revscat 2y ago
  You seem to be equating nudity with pornography, though. I tend to generate images that are nudes first in order to get aspects such as lighting and environment correct. Then i is may or may not add clothing. Is this process objectionable to you? If so, why? It’s also possible I’m simply misunderstanding what you’re objecting to.
  - supriyo-biswas 2y ago
    I’m not “objecting” to anything, it’s just that companies putting out a model capable of generating nudity would invoke some controversy they’d rather be out of.

viraptor 2y ago

Where does that idea come from? Models can generalise well - if you request photorealistic animals dressed in something specific, you'll get it even though there's likely no training image with that example. People wear enough close fitting clothes that the general form is easy to find. I first heard the "we need naked images to generate good clothed images" when SD3 came out and suddenly it's everywhere. But it just doesn't make any sense to me and as far as I know it wasn't explicitly practiced in previous popular models.

deleted 2y ago
[deleted]