Figure 3From: Recovery of archaeological wall paintings using novel multispectral imaging approachesFrom left to right: Blue (450 nm), Green (550 nm), Red (550 nm) and Infrared (1050 nm) images. The bandwiths of all the images are ± 25 nm around the central wavelengths. a) Picture in zone 1; b) Picture in zone 2; c) Picture in zone 3 and d) Picture in zone 4.Back to article page