METHODOLOGY OF ESTIMATION OF JEWELRY AND BIJOUTERIE COLORISTIC PARAMETERS
A technique for assessing the color characteristics of jewelry and bijouterie made from one or several metals (colored and precious) of various colors with and without colored jewelry inserts has been developed, which makes it possible to evaluate the effect of the ratio of the areas of any painted surfaces and objects on the change in their color perception by a person with varying lighting patterns. The technique will help manufacturers even at the design stage to level out possible color mistakes and, as a result, create more aesthetically attractive products better perceived by the human eye. To assess the color characteristics of combinations of different materials, a local color was used. Changing the characteristics of RGB local color allows you to determine the type of contrast between metals and jewelry inserts or its absence, the range of ratio of the values of metal areas and jewelry inserts, which is appropriate for use in jewelry and bijouterie. For the analysis of the color characteristics of metals, jewelry inserts, combinations or finished products, it is possible to use sample photos, computer imaging or product photos. The possibility of calculating the change in the local color of a product depending on the illumination and the ratio of the areas of materials through a full-factor experiment is shown. Using the developed technique, the color characteristics of a number of products were evaluated and recommendations were given for improving their design and reducing production costs.