- speckle noise
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гранулированный [пятнистый\] шум
Англо-русский словарь технических терминов. 2005.
speckle noise
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Speckle masking — (or bispectral analysis) is a speckle imaging method which involves estimation of the bispectrum or closure phases from each of the short exposures. The average bispectrum can then be calculated and then inverted to obtain an image. With a normal … Wikipedia
Speckle pattern — A speckle pattern is a random intensity pattern produced by the mutual interference of a set of wavefronts. This phenomenon has been investigated by scientists since the time of Newton, but speckles have come into prominence since the invention… … Wikipedia
Dynamic speckle — Figure 1 A dynamic speckle from a maize seed that seems to “boil” faster in the areas where the scatterers are more active, in this case in the embryo and in a river like in the crack. In physics, dynamic speckle is a result of the temporal… … Wikipedia
Continuous Scan Laser Doppler Vibrometry (CSLDV) — is a method of using a Laser Doppler Vibrometer (LDV) in which the laser beam is swept across the surface of a test subject to capture the motion of a surface at many points simultaneously. This is different from scanning laser vibrometry (SLDV)… … Wikipedia
Median filter — Example of 3 median filters of varying radii applied to the same noisy photograph. Implemented in Adobe Photoshop. In signal processing, it is often desirable to be able to perform some kind of noise reduction on an image or signal. The median… … Wikipedia
Comparison of image processing software — The following table provides a comparison of image processing software. Functionality Matlab*[1] Mathematica[2] imageJ FIJI (software) Population Extract alpha channel No … Wikipedia
Mechanically induced modulation — is an optical signal modulation induced by mechanical means. An example of deleterious mechanically induced modulation is speckle noise created in a multimode fiber by an imperfect splice or imperfectly mated connectors. Mechanical disturbance of … Wikipedia
Handheld projector — The Nikon Coolpix S1000pj compact camera projecting an image using its built in projector. A Handheld projector (also known as a pocket projector or mobile projector or pico projector) is an emerging technology that applies the use of an image… … Wikipedia
Structured Light 3D Scanner — Principle Projecting a narrow band of light onto a three dimensionally shaped surface produces a line of illumination that appears distorted from other perspectives than that of the projector, and can be used for an exact geometric reconstruction … Wikipedia
Christian Marois — (né en 1974[1]) est un astrophysicien canadien. Il est surtout connu pour avoir participé à la découverte des deux équipes ayant publiées les premières images directes de planètes extra solaires en novembre 2008. L une, ayant découvert 3 planètes … Wikipédia en Français
Optical heterodyne detection — is an important special case of heterodyne detection. In heterodyne detection, a signal of interest at some frequency is non linearly mixed with a reference local oscillator (LO) that is set at a close by frequency. The desired outcome is the… … Wikipedia
