3次元CG動画像と心理効果—運動方向についての要因の検討—

抄録

We investigated how the direction of the three dimensional movement of computer graphics affect the observer’s impression, especially the impression of pleasure. Our stimuli were motion pictures consisted of 50 spheres presented in a display. The spheres moved in one of eight directions (45 deg step from upward direction) with the velocity of about 1 cm/sec. Two-dimensional motion pictures consisted of discs were also presented as a comparison. In the experiment 1, 28 observers chose the most and least pleasant direction. Observers had the most pleasant impression when they felt the upward movement of themselves while they had the most unpleasant impression when they felt the downward movement of themselves. We didn’t find such results for two-dimensional stimuli. In the experiment 2, 40 observers estimated their impression in terms of SD method. A factor analysis on the results of second experiment found four factors; powerfulness, evaluation, airiness, and reality. The pleasantness was strongly related to the evaluation factor. The results suggested that the downward movement exaggerates the impression of powerfulness and reality and eliminates the impression of airiness, and that the impression of pleasantness depends upon the perception of observer’s own vertical movement (vertical vection).