Abstract: A method of selecting lens colors for eyeglasses. In the method, the colors of the skin, hair lips and pupils of a purchaser of eyeglasses are measured, and the angular positions of the measured colors on a hue circle are determined. Then, hues apart by specified angles from the measured colors are extracted as basic proposed colors. The purchaser is questioned to obtain words expressing an image for the lens color, and a color tone corresponding to each word is retrieved from a color name data base. For each color tone, the number of given words and weight of word are calculated. Further, hues which match the measured colors of the purchaser are determined based on the words. When certain basic proposed colors coincide with the thus determined hues, the numerical points for the certain basic proposed colors are increased.

Abstract: A design system for designing shapes of eyeglasses. In the system, image data expressing the face of a person are first subjected to image processing such as color compensation and profile emphasis. Subsequently, feature points representing the facial features of the face are extracted, and a plurality of horizontal, vertical and inclined auxiliary lines and auxiliary points on the auxiliary lines are set based on the feature points. Anchor points of a Bezier curve which defines the shapes of the lenses and frame of the eyeglasses are then determined. The Bezier curve is converted to data composed of polar coordinates, and the converted data are transmitted to machine tools. Control points provided at the anchor points are controlled based on words which represent a desired design image for the eyeglasses. The design system can automatically generates the shapes of the lenses and frames of eyeglasses based on features of individuals and their design preferences.