Computer-controlled virtual humans can serve as assistants in virtual scenes. Here, they are usually in an almost constant contact with the user. Nonetheless, in some applications assistants are required only temporarily. Consequently, presenting them only when needed, i.e, minimizing their presence time, might be advisable. To the best of our knowledge, there do not yet exist any design guidel...

The study of visual memory is typically concerned with an image’s content: How well, and what precision, we can recall which objects, people, or features have seen in the past. But images also vary their quality: same object scene may appear image that sharp highly resolved, it blurry faded. do remember those properties? Here six experiments demonstrate a new phenomenon “vividness extension”: t...