High-Resolution Multi-Spectral Image Archives: A Hybrid Approach

Abstract

We introduce an image capturing system that results in spectral image archives with sufficient spatial resolution and colorimetric accuracy for artwork imaging. In this system, a multi-band, low-spatial resolution multi-spectral image is combined with a high-spatial resolution lightness image (from either a monochrome digital or digitized photograph) to generate a high-spatial resolution spectral image. An alternative way to capture multi-spectral images by combining a trichromatic camera and absorption filters is also presented to overcome the technical problems inherent to the use of interference filters in this kind of imaging.