In the design of multimedia systems, one of the important issues is how to deal with "Kansei" of human beings. The concept of "Kansei" in Japanese includes several meanings on sensitive recognition, such as "impression," "human senses," "feelings," "sensitivity," "psychological reaction" and "physiological reaction." This paper presents a new concept of "automatic decorative-multimedia creation" and a semantic associative computation method. This method realizes automatic main-media decoration with dynamic sub-media data selection for representing main-media as decorative multimedia. The aim of this method is to create a new field of "automatic decorative-media art" with "semantic associative computing." This paper defines an "automatic media decoration model" with semantic spaces and media-decoration functions. Automatic media decoration is realized by applying the ...