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3D shape evaluation in virtual space - effectiveness of gazing line-action linkage system

It is indicated that there is the high possibility of disagreement between the evaluation of shape in virtual space and that in real space. We (1999) previously proposed the system for shape evaluation that integrates the visual information in virtual space and the tactile and gazing line-motion linkage information in real space. In this paper, the preferences of 3D shape images in the proposed virtual space under two experimental conditions were compared with that of the real photo-forming products made from the same data by the sensory evaluation of paired comparison and the questionnaire analysis. It was found that the preference for shapes was consistent in both spaces in the relation of the preference among shapes based on the Bradley-Terry model in sensory evaluation. This shows that the proposed system provides almost the same environment as the real space for 3D shape evaluation. The results of questionnaire also indicate that the proposed system is enough to evaluate the 3D shapes in virtual space.