Enhanced spatial resolution for snapshot hyperspectral imaging of blood perfusion and melanin information within human tissue

Q He, T Liu, RK Wang - Journal of biophotonics, 2020 - Wiley Online Library
Journal of biophotonics, 2020Wiley Online Library
We report a reconstruction method to achieve high spatial resolution for hyperspectral
imaging of chromophore features in skin in vivo. The method utilizes an established
structure‐adaptive normalized convolution algorithm to reconstruct high spatial resolution of
hyperspectral images from snapshot low‐resolution hyperspectral image sequences
captured by a snapshot spectral camera. The reconstructed images at chromophore‐
sensitive wavebands are used to map the skin features of interest. We demonstrate the …
Abstract
We report a reconstruction method to achieve high spatial resolution for hyperspectral imaging of chromophore features in skin in vivo. The method utilizes an established structure‐adaptive normalized convolution algorithm to reconstruct high spatial resolution of hyperspectral images from snapshot low‐resolution hyperspectral image sequences captured by a snapshot spectral camera. The reconstructed images at chromophore‐sensitive wavebands are used to map the skin features of interest. We demonstrate the method experimentally by mapping the blood perfusion and melanin features (moles) on the facial skin. The method relaxes the constrains of the relatively low spatial resolution in the snapshot hyperspectral camera, making it more usable in imaging applications.
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