A New Method for Evaluating Optical Traits of Stereoscopy of Face.
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概要
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In the functions of the cosmetics, one of the crucial points is to represent the stereoscopy. Now its objective evaluation is required. Though the facial stereoscopy by the make-up is created through emphasizing the light and shade, its effectiveness until now has been evaluated by human senses such as the sense of sight. Obtaining an objective evaluation is quite difficult. A series of methods that are proposed by this study can help resolve this problem. This study proves that facial light and shade can be directly measured in a short time, enabling the calculation of the 3-D facial traits and stereoscopy brought by the traits. The assembled device was designed to irradiate light to an subject in various directions at a fixed distance and then make an impression of the subject, ready to be processed. By the image processing through the average values and the variance values calculated previously, it became possible to reproduce the subject traits of the light and shade on a image. Then by standardizing the analyzed results of the subjects, the conventional facial traits which are usually known were successfully reproduced. Meanwhile the difference in the effect brought by applying the foundations became obvious. It was discovered by analyzing the subject with two kinds of foundations which differed in the optical traits. Consequently this series of methods is considered greatly efficient in evaluating the facial stereoscopy, objectively and universally.
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