Extended Data Fig. 4: Colour accuracies calculated from spectral sensitivities of sensors following the Eqs. S1–S4 in Supplementary Note 3 and Supplementary Scheme 1.
From: Vertically stacked monolithic perovskite colour photodetectors

a. An original image rendered from the reference values with indication of colour error ΔELab (CIE1976 standard). b-d. The results obtained with diagonal unity matrix M1. b. Stacked perovskite colour sensor presented in this work; c. CFA sensor Sony IMX249; d. Foveon™ sensor. e-g. Results obtained with correction matrices Mcorr (optimized for each sensor) and corresponding Frobenius norm.