P‐39: Theoretical Limit of Object Colors and Real Object Colors

Abstract

We clarified how wide the gamut of subjects intended to be reproduced on a display are, and what kind of characteristics the BT.709 display has. First we revealed the theoretical limit of real object colors (surface‐colors) with pseudo optimal color, and the gamut of real object colors referred SOCS. Then we revealed the characteristics of the BT.709 display gamut from comparison between BT.709 display gamut and TV color signal distribution which was measured. Then we estimated a probability distribution of real object colors, and suggested a display color design strategy with this knowledge.

Relationship between mode‐boundary from surface color to fluorescent appearance and preferred gamut on wide‐gamut displays

“…10) at each chromaticity. According to the figure, the lightness of acceptable limit and the lightness of CMI 100 are closely related as (3) where L* limit is the lightness of the acceptable limit, L* CMI=100 is lightness of CMI 100, and α is a constant.…”

“…In the previous paper, we clarified a policy of designing the color gamut of displays such that it came from not only the viewpoint of designing the color reproduction based on the television standard but also the viewpoint of the objects of images displayed on television. 3 The aim of this paper is to reproduce the preferred images on television as the next step of our research. Therefore, we investigated a relationship between preference and the human perception of colors.…”

Review Paper: Multi‐primary‐color displays: The latest technologies and their benefits

“…When calculating YUV values at each subpixel by using Eqs. (14) and (15) . Note that the subpixels A and C are the "shared" subpixels in this illustration.…”

“…Then, YUV values are computed on each subpixel. In this simulation, the conversions from RGB and RGBYe to YUV are processed as (14) and (15) Note that the 3 × 3 matrix in Eq. (14) is defined in BT.…”

“…For RGBW, we calculated the YUV values as shown in the same manner as in Eq. (14). Since the white primary only consists of luminance information, YUV values of white can be formulated as Y = Y w * w and U = V = 0, where Y w is the part of the tristimulus value (i.e., Y of XYZ) and w is the digital-code value of the white primary.…”