For producing of virtual reality contents based on real-time computer graphics, various techniques are studying actively. However studies whose object is the factors which are included in virtual reality contents and affect emotion of the observers, have not existed so far. On the other hand, at the studies called “Kansei Information Engineering”, several remarkable cases are reported, such as retrieving of photos or pictures and designing of dress or house by means of inputting “Kansei” words. For instance, they are “Warm”, “Modern”, “Romantic” and so on.
As a result that we paid attention to this means as an effective user interface, we developed a technique for adjustment of many kinds of parameters included in virtual reality contents. The parameters usually need to be adjusted by much trial and error labor. In our method, we have to make “Kansei” database which defines relationship between “Kansei” words and parameters. In order to make the database, first, we collected observers' subjective evaluation data by each “Kansei” word on several sample contents which are set on various parameters. Next, we analyzed the data by means of multiple regression analysis. Finally we defined the relationship as multiple regression formulas.
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