Abstract
We can feel the texture through the visual modality as well as tactile sensations. In this study, we investigate how we feel tactile texture from the shades of the image by the experiment in which participants freely expressed the impression of texture images by onomatopoeia. We prepared visual texture images made by CG technique from 3D asperity information and lighting condition. We used description by onomatopoeia to evaluate the shaded textures as we considered that the statistical distribution of the consonants of onomatopoeia represented the tactile information of the surface. In order to compare the characteristics of the image with the texture evaluation by onomatopoeia, we also carried out texture image analysis by gray level co-occurrence matrix and examined what geometric components correspond to the texture of the image. As a result, it was revealed that participants had feelings of homogeneity for coarseness and smoothness of the texture image as well as friction for the strength of edge and roughness. Our results suggest that the representation of texture impression by the statistical distribution of consonants of onomatopoeia can express the qualitative evaluations for the shaded texture.
