Method for characterising volumes of skin

摘要

The subject of the present invention is a method for characterizing the distribution of the volumes of the surface of the skin of an individual, more particularly applicable in the evaluation of the effect of firming cosmetic products. This method uses the isolines and the gradients of the slopes computed from a three-dimensional representation of the surface of the skin.

主权项

1. A method for characterizing the distribution or the migration of volumes on the surface of the skin of an individual, said method comprising the following steps:
i) determining a reference value from the individual or from at least one other person, by
acquiring a three-dimensional image in voxel form by passive stereoscopy that represents a three-dimensional surface of at least one part of the body of said individual or of said person,selecting at least one line of said three-dimensional surface, and making a graphic representation of said line, wherein lines of a polyhedral meshing of the image are selected, andcomputing at least one parameter correlated with said lines, and obtaining a first value, called a reference value, ii) determining a second value of said parameter by applying step i) to the individual, and iii) estimating the distribution or the migration of the volumes on the surface of the skin of the individual, by comparing the second value to the reference value, wherein the at least one parameter is a mean of directions of the gradients of vertices of the polyhedral meshing.