Influence of light direction on appearance of solid object

Abstract

Psychological structure of modelling effect was investigated by the semantic differential method. Under various lighting conditions, the appearance of the objects were appraised with twenty-eight bi-polar adjective scales, and it was found that the structure of modelling was constituted by three factors, which are attractiveness, activity and evaluation. Next, on the basis of three extracted factors, four new scales were constructed for assessment. They were attractive-unattractive, active-passive, harmonious-dissonant and agreeable-disagreeable. Using these scales, modelling effects of four kinds of dresses were assessed under various lighting directions, and the scales were related to the lighting conditions.