Fig. 3: Hyperspectral imaging performance demonstration on high-resolution, high light throughput and real-time ability.
From: A broadband hyperspectral image sensor with high spatio-temporal resolution
a, Hyperspectral imaging results of small targets. The raw measurements, synthesized RGB images and hyperspectral images of several exemplar bands are shown on the left. A comparison of the background spectrum, ground truth and reconstructed spectra of the small targets, which are marked in the synthesized RGB image with a blue rectangle, is shown on the right. b, Hyperspectral imaging comparison in low-light conditions. The imaging results of our HyperspecI sensor, a commercial mosaic multispectral camera and a commercial scanning hyperspectral imaging camera are compared at a fixed exposure time of 1 ms. The synthesized RGB images, exemplar spectral images at 580 nm and 690 nm and the corresponding normalized data are shown. c, Hyperspectral imaging results at video frame rate. The results at three different time points (0 s, 1 s and 2 s) while the object was undergoing translational motion at a speed of about 0.5 m s−1 are shown on the left. The results at three different time points (0 s, 0.02 s, and 0.04 s) while the object was undergoing rotational motion at a speed of around 6 rad s−1 are shown on the right. The comparison of the result is demonstrated using synthesized RGB images and spectral images at 550 nm, 700 nm and 850 nm. a.u., arbitrary units.
