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. 2020 Jan 14;11(2):895–910. doi: 10.1364/BOE.378470

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© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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Fig. 1. — (a) Schematic of the hyperspectral reconstruction calibration system that consists of a smartphone, color chart and 16-channel hyperspectral camera, with sensor structure and sensitive wavebands at each subchannel shown in the top left. (b) The manufacturer’s data of wavelength-dependent sensitivity for 16 bands in the snapshot hyperspectral camera. (c) The RGB image of color chart from the smartphone camera. (d) The raw image of color chart directly exported from the band 9 in the snapshot hyperspectral camera. (e) Spectral power distribution of the smartphone flashlight that is used in this study. (f) Absorption spectra of oxyhemoglobin (oxyHb), deoxyhemoglobin (deoxyHb) and melanin.