| The purpose of this research was to quantitatively simulate surface colors on a high resolution RGB video display unit. Texture, viewing conditions and other factors present inherent difficulties in object color simulation, but nevertheless, simulation is much more flexible than the preparation of physical samples.; The CIE chromaticity coordinates x, y, and the luminance Y, of the desired surface colors must be transformed, by appropriate matrices, into the r and g coordinates and the summation of the amounts of R, G and B. Fundamental to the color simulation are the spectral radiometric characteristics of the R, G and B guns in the video display monitor. These characteristics were obtained using a spectrophotometer in the single beam mode as a radiometer.; Testing of the transformation and simulation system commenced with a series of displays of diagrams imitating the Munsell Book of Color, such as hue pages and hue-chroma circles. The test was extended by fractionating the spaces between chips in the Book of Color, based on a linear interpolation and expansion of fractionated regions.; Although texture cannot be represented, color differences can be seen on a relative basis provided that accurate specification and accurate simulation of colors are both available. The versatility of the present system was demonstrated in conjunction with the combinatorial color formulation and color correction programs which are widely used in textile dyeing, printing and other color-using industries.; A last application demonstrated the use of the system as a research tool to improve the spacing of colors with chromas higher than those in the Munsell Book of Color. |
