Optimized color gamuts for tiled displays

Abstract

Abstract. We consider the problem of finding a large color space that can be generated by all units in multiprojector tiled display systems. Viewing the problem geometrically as one of finding a large parallelepiped within the intersection of multiple parallelepipeds, and using colorimetric principles to define a volume-based objective function for comparing feasible solutions, we develop an algorithm for finding the optimal gamut in time O(n 3 ), where n denotes the number of projectors in the system. We also discuss more efficient quasiconvex programming algorithms for alternative objective functions based on maximizing the quality of the color space extrema.

ProLab: A Perceptually Uniform Projective Color Coordinate System

“…The gamut coverage can also be determined via its volume. For example, [65], [66] employ the gamut volume in the CIE XYZ space as a quantitative measure of color coverage, and [67] employs it in the CUELUV and CIELAB spaces. At the same time, it makes little sense to use the CIE XYZ space for these purposes because it is nonuniform, and using CUELUV, CIELAB and other known uniform color spaces is inconvenient because the gamuts there have complex shapes for calculating the volume (Fig.…”

“…At the same time, it makes little sense to use the CIE XYZ space for these purposes because it is nonuniform, and using CUELUV, CIELAB and other known uniform color spaces is inconvenient because the gamuts there have complex shapes for calculating the volume (Fig. 6), which is especially important when attempting to maximize the volume of a gamut [66]. Both of these disadvantages can be overcome when using the proLab space.…”

AUTOMATIC MULTI-PROJECTOR CALIBRATION - A Review of Systems for Non-experienced Users

“…This operation requires estimating the common gamut of the installation, i.e. defining what the common displayable colors of the projectors are (Pagani and Stricker, 2007;Bern and Eppstein, 2003;Wallace et al, 2003). The CIE XYZ primary values of each projector are computed from the measured corresponding spectral reflectances.…”

Modeling Color Properties of Tiled Displays

“…Further, the algorithm to find a common color gamut for n projectors is a computational geometry problem of complexity O ( n 6 )[41], which makes this method unscalable for displays made of large number of projectors. So, heuristics are often used to match the color gamuts which cannot guarantee an optimal solution.…”