Multi-layer displays suffer from Moire interference formed between the regular colour filters and the black matrix present on each layer. This interference can be abated by spatially filtering the image on the rear layer. A function was derived and tested that relates the bi-directional transmission distribution function of a spatial filter and its distance to the effective point spread function acting on an image. This was then applied to an image layer in a numerical model of the interference which was compared against measurements. Finally a metric, based on the square root integral, was developed that relates the distortion to the image in terms of moire interference and the spatial filtering of the rear layer to the human visual system.
Gareth P. Bell, Gareth P. Bell,
"Advanced metrics-based design methodology for multilayer 3D displays", Proc. SPIE 5443, Defense, Security, and Cockpit Displays, (15 September 2004); doi: 10.1117/12.561281; https://doi.org/10.1117/12.561281