Analysis on Color Rendering Performance of Digital Acquisition System for Grotto Murals

Abstract

On the basis of ensuring the physical safety of the grotto murals, high-fidelity digitalization of the murals is the basis for the scientific protection, permanent preservation, continuation and inheritance of grotto murals. This paper aims to study the color rendering performance and applicability of the planar digital acquisition system for the murals. The color rendering performance of four acquisition systems were detected and analyzed by simulating the planar digital acquisition scene in the grotto temple and its shooting conditions. The results show that the color gamut of each acquisition system is much larger than those of sRGB and Adobe RGB color space, and the systems of scanning back combined with LED light have better color rendering accuracy and larger color gamut than the systems consisting of digital back and fluorescent light. The four acquisition systems are competent for the digitalization of grotto murals, and the systems of set 4 and set 2 are especially recommended.