Three dimensional configuration and spatial frequency properties of facial expression: from the perspective in the development of new cosmetics

摘要

The features of happy, angry, sad and surprised faces were studied. In the happy face, it was found that distinct characteristic changes occurred around the cheeks by the three dimensional analysis, and that the deviation range of gray level was wider than that measured in other faces by gray level analysis. By face recognition experiment using frequency-filtered face images, it was found that only happy face was easily recognized than other faces even under low-pass condition. These results suggested that emphasizing the contrast in a wide region of the facial surface increased the three-dimensional features, which possibly resulted in the selective enhancement of the "happy face features". We foresee new make-up foundations that can only emphasize and develop the "happy face feature".