Spectral Reproduction- How Many Primaries Are Needed?

摘要

Reducing metamerism is one of the main goals of spectral printing. There are three fundamental questions to answer in spectral reproduction: 1. What is the optimal number of primaries? 2. Which types of primaries to use? 3. How to find the ink combination that replicates a given spectral reflectance as closely as possible for a given set of primaries? This paper focuses on the first question. We evaluate the extent to which metamerism is reduced as more and more inks are used. The study considers both a realistic printer and a realistic additive displaysr with both idealized and actual ink reflectances.