Multispectral imaging is an optical acquisition method that records scene radiance or reflectance in multiple discrete spectral bands, typically spanning the visible, near-infrared, and sometimes shortwave infrared regions. Using bandpass filters, tunable filters, or sensor arrays with spectrally selective elements, it generates co-registered images where each band captures wavelength-dependent material properties. Quantitative analysis of these bands enables spectral feature extraction, classification, and segmentation based on differences in absorption, scattering, or fluorescence. In research, multispectral imaging is applied to non-destructive assessment, tissue characterization, remote sensing, and cultural heritage analysis, often serving as a lower-complexity, higher-throughput alternative to full hyperspectral imaging.
A research team in South Korea has developed a next-generation sensor material capable of integrating the detection of multiple light wavelengths.
Nanophysics
Sep 24, 2025
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91
When German physicist Wilhelm Röntgen discovered X-rays in the late 1800s while experimenting with cathode ray tubes, it was a breakthrough that transformed science and medicine. So much so that the basic concept remains ...
Optics & Photonics
Sep 18, 2025
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A new approach to manufacturing multicolor lenses could inspire a new generation of tiny, cheap, and powerful optics for portable devices such as phones and drones.
Optics & Photonics
Sep 9, 2025
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215
The second of the Meteosat Third Generation Imagers, MTG-I2, has passed some important milestones in the cleanroom facilities at Thales Alenia Space in Cannes, southern France.
Space Exploration
Sep 4, 2025
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19
The Operational Land Imager on Landsat 9 captured this image of Buccaneer Archipelago on June 11, 2025.
Earth Sciences
Sep 1, 2025
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22
An international team of astronomers has performed multiwavelength observations of a gamma-ray binary system known as HESS J0632+057. Results of the observational campaign, presented July 31 on the pre-print server arXiv, ...
Canada is facing another dangerous wildfire season, with burning forests sending smoke plumes across the provinces and into the U.S. again. The pace of the 2025 fires is reminiscent of the record-breaking 2023 wildfire season, ...
Environment
Jul 28, 2025
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36
In October of 1957, the USSR launched the world's first artificial satellite into orbit around Earth. Today, we're combining Earth observation with image processing in the search for mineral resources.
Planetary Sciences
Jul 15, 2025
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22
A multinational research team, including engineers from the University of Cambridge and Zhejiang University, has developed a breakthrough in miniaturized spectrometer technology that could dramatically expand the accessibility ...
Optics & Photonics
Jul 11, 2025
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164
Astronomers from Bulgaria and Egypt have performed multi-wavelength observations of a well-known blazar designated S5 0716+714. Results of the observational campaign, published June 23 in the Monthly Notices of the Royal ...
