It is possible to detect if an image, such as a picture of a human face, is AI-generated or not. There are various techniques and algorithms used to identify real and synthetic images, including analyzing shadows, reflections, and vanishing points. These methods can help determine whether an image is human-made or machine-made. However, as AI image generation technology progresses, it is becoming increasingly difficult for both humans and algorithms to distinguish between real and AI-generated images. Therefore, it is crucial to remain vigilant and cautious when encountering images online, especially if they seem too good to be true or have the potential to cause harm.

Also worth reading: "How do laws around copyright and intellectual property apply to images generated by artificial intelligence?" · What is a responsible AI image policy checklist you can use when integrating AI generated visuals into your workflow? · "What are the key differences between human-written text and AI-generated text, and which one is generally considered to be of higher quality?"