Looseness evaluation method, slackness evaluation device, and slackness evaluation program

摘要

To provide an evaluation method capable of easily, objectively, and highly accurately evaluating looseness of facial skin.SOLUTION: The looseness evaluation method is a method of evaluating the looseness of the face of an evaluation subject, comprising: acquiring first three-dimensional face shape data of the face of the evaluation subject; generating first three-dimensional ideal face shape data without looseness on he basis of the face of the evaluation subject; calculating a difference between the first three-dimensional face shape data and the first three-dimensional ideal face shape data as a first feature amount for evaluating the looseness of the face of the evaluation subject; calculating a looseness index value on the basis of a pre-created model for evaluating facial looseness and the first feature amount; and evaluating the looseness of the face of the evaluation subject on the basis of the looseness index value. The model is created on the basis of: second three-dimensional face shape data obtained from the face of each of a plurality of subjects; a plurality of second three-dimensional ideal face shape data sets, without looseness, created on the basis of the face of each of plurality subjects; and a visual evaluation value of the looseness of the face of each of the plurality of subjects.SELECTED DRAWING: Figure 1