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- W4381586655 abstract "Hyperspectral imaging provides optical information with high-dimensional spatial-temporal-spectral data cubes revealing intrinsic matter characteristics. It has been widely applied in various intelligent inspection applications. The existing hyperspectral imaging systems employ individual optical prism or grating to separate different spectra, which require complicated optical design that takes a heavy load for integration. The emerging multispectral imaging sensor integrates narrow-band filters on each pixel element, wasting most light throughput and trapped in the rigorous tradeoff between spatial and spectral resolution. In this work, we report an on-chip computational hyperspectral imaging framework with full spatial and temporal resolution. By integrating different broadband filtering materials on the imaging sensor, the target spectral information is non-uniformly and intrinsically coupled on each pixel with high light throughput. Using intelligent reconstruction algorithms, multi-channel images can be recovered from each frame, realizing real-time hyperspectral imaging. Following such a framework, we for the first time fabricated a broadband (400-1700 nm) hyperspectral imaging sensor with an average light throughput of 71.8$%$ (enabling 32.5 dB peak signal-to-noise ratio of spectral reconstruction on ColorChecker Classic chart) and 89 wavelength channels (10 nm interval within 400-1000 nm and 25 nm interval within 1000-1700 nm). The average spectral resolution achieves 2.65 nm at 400-1000 nm and 8.59 nm at 1000-1700 nm. The demonstrated spatial resolution is 2048x2048 pixels at 47 fps, with $sim$3.43 arc minute resolving ability at a 39-degree field of view. We employed the prototype sensor to collect a large-scale hyperspectral image dataset (210 scenes over 8 categories), and demonstrated the sensor's wide application potentials on a series of experiments ..." @default.
- W4381586655 created "2023-06-22" @default.
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- W4381586655 date "2023-06-20" @default.
- W4381586655 modified "2023-09-26" @default.
- W4381586655 title "A low-cost integrated hyperspectral imaging sensor with full temporal and spatial resolution at VIS-NIR wide range" @default.
- W4381586655 doi "https://doi.org/10.48550/arxiv.2306.11583" @default.
- W4381586655 hasPublicationYear "2023" @default.
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