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.
Hold on to your telescopes: The DESI Legacy Imaging Surveys team has released the largest-ever 2D color map of the universe. The 5.6-trillion-pixel map contains nearly 4 billion celestial objects, primarily stars and galaxies. ...
Astronomy
Aug 10, 2026
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In South Africa, it's been legal for several years for people to grow hemp (a type of Cannabis sativa with very low levels of the psychoactive compound THC) for personal use following changes to the law. There's also been ...
Agriculture
Aug 5, 2026
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5
Artificial light at night (ALAN) can cause plants to open their buds and sprout leaves earlier in the spring. ALAN can also cause trees to delay changing the color of their leaves in the fall. These changes can ripple through ...
Environment
Aug 4, 2026
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Satellite-derived maps of defoliation caused by European spongy moths—a devastating U.S. forest pest that consumes the leaves of a wide variety of trees—offer a promising solution for tracking where and when to spray and ...
Ecology
Jul 30, 2026
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Research involving the UAB and CREAF has examined the factors that help forests maintain stable productivity over time and concluded that water and biodiversity are key determinants.
Ecology
Jul 30, 2026
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Drylands soils are being degraded by human activities and climate change, threatening the thin living layers covering their surface, called biocrusts, according to the U.S. Geological Survey. Composed of cyanobacteria, lichens, ...
Ecology
Jul 30, 2026
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Birds can inhabit various environments with different climates and temperatures, ranging from cold polar regions to scorching hot deserts. To survive and thrive in these very different environments, they need to effectively ...
This composite of images taken by NASA's Psyche mission shows the crescent of Mars grow as the spacecraft approached the planet for a gravity assist from May 2 to May 15, 2026.
Planetary Sciences
Jul 19, 2026
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The spacecraft aced its encounter with Mars. Now, mission scientists are studying a trove of data from the flyby in preparation for its arrival at asteroid Psyche in 2029.
Planetary Sciences
Jul 18, 2026
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186
For six and a half days in July 2024, the balloon-borne solar observatory Sunrise III kept its gaze fixed on the sun. The stratospheric flight, which stretched from the northernmost tip of Sweden to Canada's Northwest Territories, ...
Astronomy
Jul 9, 2026
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