Hemispherical photograph used to study microclimate of winter roosting habitat at the Monarch Butterfly Biosphere Reserve, Mexico.
Hemispherical photography, also known as canopy photography, is a technique to estimate solar radiation and characterize plant canopy geometry using photographs taken looking upward through an extreme wide-angle lens or a fisheye lens (Rich 1990). Typically, the viewing angle approaches or equals 180-degrees, such that all sky directions are simultaneously visible. The resulting photographs record the geometry of visible sky, or conversely the geometry of sky obstruction by plant canopies or other near-ground features. This geometry can be measured precisely and used to calculate solar radiation transmitted through (or intercepted by) plant canopies, as well as to estimate aspects of canopy structure such as leaf area index. Detailed treatments of field and analytical methodology have been provided by Paul Rich (1989, 1990) and Robert Pearcy (1989).
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Hemisphericalphotography, also known as canopy photography, is a technique to estimate solar radiation and characterize plant canopy geometry using photographs...
measurements are typically preferred. Non-contact LAI tools, such as hemisphericalphotography, Hemiview Plant Canopy Analyser from Delta-T Devices, the CI-110...
photograph of the entire sky. Another application is that of hemisphericalphotography to study plant canopy geometry and to calculate near-ground solar...
created via computer-generated graphics, onto hemispherical screens. They are also used for scientific photography, such as recordings of aurora and meteors...
leaf area values are seen as an adaptation to drought stress. Hemisphericalphotography Leaf Area Index Photosynthetically active radiation Plant growth...
photographing them through a suitable fish-eye lens. (see also Hemisphericalphotography). But its main value now is essentially in building intuition...
determining practical photographic exposure, a hemispherical sensor has proven more effective. With a hemispherical sensor, typical values for C are between...
forms or parameters can be estimated from in-situ data such as hemisphericalphotography and lidar ranging data. Comparison between different LAD functions...
focal plane. This method is common in aerial or space launch-vehicle photography, when the distance to the object is changing very rapidly. Wedges were...
exposure, a hemispherical receptor has proven more effective. Don Norwood, inventor of incident-light exposure meter with a hemispherical receptor, thought...
include the use of line-intercept, spherical densiometer, and hemisphericalphotography. Exact cover measurements should be made in vertical direction...
David (2007). "Night-Time and Twilight Photography". In Michael R. Peres (ed.). Focal Encyclopedia of Photography: Digital Imaging, Theory and Applications...
Girdling - Green Chain Hand compass - Hardwood timber production - Hemisphericalphotography - Hendre-Dru Tramway - High forest (woodland) - High grading -...
yielded by a given piece of timber by measuring its diameter Hemisphericalphotography – estimates solar radiation and characterize plant canopy structure/density...
Satellite images (also Earth observation imagery, spaceborne photography, or simply satellite photo) are images of Earth collected by imaging satellites...
such as photographic film. As a pivotal technology in the fields of photography and videography, cameras have played a significant role in the progression...
diagonal; it does not provide a complete hemispherical view, and is not suitable for hemisphericalphotography. "Canon Fisheye EF 15mm f/2.8 discontinued"...
Detection of new nebulae by photography, by Pickering Horsehead Nebula at ESA/Hubble The Horsehead Nebula at the Astro-Photography site of Mr. T. Yoshida....
The science of photography is the use of chemistry and physics in all aspects of photography. This applies to the camera, its lenses, physical operation...
Diffuse sky radiation Earth's shadow, visible at sunset Golden hour (photography) Sundown town Ridpath, Ian (2012-01-01), "sunset", A Dictionary of Astronomy...
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