How do I figure out how to use image generation services without abusing the rights of others?
I'll interpret "abusing" as illegal to dodge the debate around ethics.
There are 2 possible illegal uses of a training sample: 1) the license of the training sample doesn't allow AI training 2) the AI model plagiarizes the training sample (and/or doesn't provide proper attribution in case of plagiarism).
If the image generation service didn't indicate what their training set is, it's very difficult to confidently infer if a sample was part of the training set, unless AI model plagiarizes it.
Also, note that the law itself is unclear on what can be used to train commercial AI models, e.g. see Is it illegal for a firm to train an AI model on a CC BY-SA 4.0 corpus and make a commercial use of it without distributing the model under CC BY-SA?.
Note for dataset providers that researchers have tried to develop some methods to alter a dataset so that one can detect whether a model was trained on it, e.g. see https://arxiv.org/abs/2002.00937
Example of a detection service: https://www.makeuseof.com/how-to-know-images-trained-ai-art-generator/:
Set up by a group of artists, Spawning is a collective whose aim is to help people find out whether their images are on datasets like LAION-5B, used to train AI models. Their web search engine called Have I Been Trained? lets you easily search keywords such as your artist name.