How should I prepare reference images for AI to generate a consistent 3D character model, and which AI image-to-3D tools work best for consistent characters
Just looking at character consistency a bit closer and the reference images do seem to be a contributor that is just as important as the 3D generator itself.
If there are items of clothing, lighting or hairstyles that differ between the front and side view, the AI must determine which one is correct. I would make the references sort of like a character turnaround sheet: same pose, same outfit, same scale, clean background and the same lighting on every angle.
I have been looking into this method and one of the services I am interested in is Tripo AI, which has the ability to create 3D from multiple views. It has the following limitations with its current API documentation: References can be made to the front, left, back or right, it needs a minimum of 2 images, and the front image must be provided. It also suggests the same object should be kept under constant lighting.
I would aim to begin with a clean front and side view and then work up to the back and opposite side when there is something in the character that needs to be inferred and not left to chance.
The problem appears to be the largest one is to provide AI with many appealing images that are not in harmony.
Have you noticed any notable differences in proportion or clothing details in characters created using Tripo AI when using multiple viewpoints?