METHOD FOR SIMULATING AND DEMONSTRATING THE OPTICAL EFFECTS OF GLASSES ON THE HUMAN FACE

摘要

Disclosed is a method for demonstrating the influence of a specific spectacle frame and the optical glasses inserted into said spectacle frame on the appearance of the person wearing a pair of glasses as perceived by another person (a virtual observer). The invention comprises the following features: an image of the face of a person wearing glasses is provided in such a way that the image can be processed in a computer, the arrangement of the respective spectacle frame in front of the eyes is determined; the image of the face is projected onto a plane by means of ray tracing through the point of rotation of the eye of the (virtual) observer, whereby a 2-D image of the face is produced on said plane; during calculation of the course of progression of the main beam disposed inside the rings of the glasses of the spectacle frame or the edges of the spectacle glasses, the optical effect of the area of the spectacle glass respectively (virtually) inserted into the respective glass ring, through which the main beam passes, and the arrangement thereof in front of the eye is taken into account in such a way that an observer of the 2-D image of the face thus produced wearing said glasses, is able to judge the distortion of the eye part of the face by the spectacle glasses and therefore evaluate the quality of the spectacle glasses.