Fig. 7: Hyperspectral imaging by using the ECOS with one filter unit.
From: Miniaturized on-chip spectrometer enabled by electrochromic modulation
a Sketch of the ECOS with a single filter unit. The first polarizer’s angle is rotated during the data acquisition to obtain the raw data frames. b Photo image of the used ECD, which is used to show its transparency. The ECD boundary is indicated by the orange box. c The reconstructed spectral image and the pseudo-colored images at selected wavelengths, based on 36 raw data frames that were acquired at different angles of the first polarizer. The original object is a jellyfish image displayed on the screen. d The reconstructed spectral images by only using four selected angles of the first polarizer in the mode of ‘m = 2’
