Abstract
A surface texture is an important factor that affects a product Kansei quality. People perceive a quality of surface texture using different sensory modalities, e.g. vision and touch, and switches them through an interaction with a product, e.g., we see and then touch a product surface. Between such sensory modality transitions, we often expect subsequent modal perceptions using a prior modality, e.g. predicting tactile quality of a product from its appearance before touching. The authors assume that the prior expectation using a modality affects the posterior experience using another modality. In this paper, we propose an evaluation method that identifies the visual expectation effects on tactual experiences. In the method, we synthesize combinations of visual and tactile samples using a half-mirror. Evaluators compare the synthesized samples with a set of real samples used as a tactile scale and select real samples that corresponds to the synthesized samples. We demonstrate the appropriateness of the method with analysis results of roughness using plastic texture samples having different textures, which are commonly used in a product design.
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