Source: Lee, H. (2018). The Construction of K-Pop Idols' Visual Identity through Fashion and Photography. Journal of Fashion Studies, 14(1), 1-15.
The Korean term often used for these outputs is simply Foto (포토). But in the K-pop ecosystem, the Foto is a product of higher value than the video content. Why? Because the "fake photo" allows for endless ideation. Fans engage in "photo card" collecting, where the value of a card is directly proportional to how rare and how "perfect" (read: artificially curated) the image is. Kpop Fake Nude Photo