Create avatar from user photos

features like https://starryai.com/starrytars or https://www.dyvo.ai/ and many more in the way it can create avatars? How work? If you take a look for example in https://starryai.com/starrytars you can Upload 10-20 photos of yourself in different environments and lighting,.the website via AI will train on your input photos and. finally you can choose from 100’s of personalized online avatars. An standard AI image creation can create random images via prompt not your personal avatar from your photos, please take take a look and in https://www.dyvo.ai/