OTF - определение. Что такое OTF
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  3. OTF

Что (кто) такое OTF - определение

WIKIMEDIA DISAMBIGUATION PAGE
OTF (disambiguation); Otf; OTF (group)

Optical transfer function         
  • The three-dimensional point spread functions (a,c) and corresponding modulation transfer functions (b,d) of a wide-field microscope (a,b) and confocal microscope (c,d). In both cases the numerical aperture of the objective is 1.49 and the refractive index of the medium 1.52. The wavelength of the emitted light is assumed to be 600 nm and, in case of the confocal microscope, that of the excitation light 500 nm with circular polarization. A section is cut to visualize the internal intensity distribution. The colors as shown on the logarithmic color scale indicate the irradiance (a,c) and spectral density (b,d) normalized to the maximum value.
  • Various closely related characterizations of an optical system exhibiting coma, a typical aberration that occurs off-axis. (a) The point-spread function (PSF) is the image of a point source. (b) The image of a line is referred to as the line-spread function, in this case a vertical line. The line-spread function is directly proportional to the vertical integration of the point-spread image. The optical-transfer function (OTF) is defined as the Fourier transform of the point-spread function and is thus generally a two-dimensional complex function. Typically only a one-dimensional slice is shown (c), corresponding to the Fourier transform of the line-spread function. The thick green line indicates the real part of the function, and the thin red line the imaginary part. Often only the absolute value of the complex function is shown, this allows visualization of the two-dimensional function (d); however, more commonly only the one-dimensional function is shown (e). The latter is typically normalized at the spatial frequency zero and referred to as the modulation transfer function (MTF). For completeness, the complex argument is sometimes provided as the phase transfer function (PhTF), shown in panel (f).
  • The '''MTF''' data versus spatial frequency is normalized by fitting a sixth order polynomial to it, making a smooth curve. The 50% cut-off frequency is determined and the corresponding '''spatial frequency''' is found, yielding the approximate position of '''best focus'''.
  • date=August 2013}} of the total frame area of a '''knife-edge test target''' back-illuminated by a '''black body'''. The area is defined to encompass the edge of the target image.
  • When viewed through an optical system with trefoil aberration, the image of a point object will look as a three-pointed star (a). As the point-spread function is not rotational symmetric, only a two-dimensional optical transfer function can describe it well (b). The height of the surface plot indicates the absolute value and the hue indicates the complex argument of the function. A spoke target imaged by such an imaging device is shown by the simulation in (c).
FUNCTION THAT SPECIFIES HOW DIFFERENT SPATIAL FREQUENCIES ARE HANDLED BY THE SYSTEM; DESCRIBES HOW THE OPTICS PROJECT LIGHT FROM THE OBJECT OR SCENE ONTO A PHOTOGRAPHIC FILM, DETECTOR ARRAY, RETINA, SCREEN, ETC.
Modulation Transfer Function; Modulation transfer function; Phase Transfer Function; Optical Transfer Function; Modulation transfer function (infrared imaging); MTF chart; Phase transfer function; Line spread function
The optical transfer function (OTF) of an optical system such as a camera, microscope, human eye, or projector specifies how different spatial frequencies are handled by the system. It is used by optical engineers to describe how the optics project light from the object or scene onto a photographic film, detector array, retina, screen, or simply the next item in the optical transmission chain.
https://en.wikipedia.org/wiki/Optical_transfer_function
cut-in         
  • Variations in Cyrillic cursive. Letters in same row have the same code point.
FILE FORMAT
Opentype; OpenType features supported by Mac OS X; .otf; Open Type; OpenType font; Open Font Format; OpenType math; Cut-in; OpenType MATH; OpenType mathematical font; Mathematical OpenType typeface; OpenType color; Color font; Font/otf
¦ noun a shot in a film that is edited into another shot or scene.
SpaceX Starship orbital test flight         
  • The [[National Weather Service]] radar in Brownsville, Texas briefly showed the plume from the rocket's explosion
  • [[GOES-16]] satellite image of South Texas taken at the time of Starship flight
  • Starship engines during first orbital test flight.
  • Comparison of early designs of Starship to Falcon Heavy and Saturn V
MAIDEN FLIGHT OF SPACEX STARSHIP
Starship orbital test flight; Starship Orbital Test Flight; Starship otf; Starship OTF; SpaceX Starship otf; SpaceX Starship OTF; Starship Integrated Flight Test; Starship Flight Test; Starship Test Flight; Starship OFT; Starship oft
SpaceX Starship's first orbital test flight is expected to launch sometime in late 2022, once SpaceX makes environmental adjustments to Starbase, the planned launch site, as required by the Federal Aviation Administration.
https://en.wikipedia.org/wiki/SpaceX_Starship_orbital_test_flight

Википедия

OTF

OTF is a three-character combination that may refer to:

Sports
  • Obstructing the field, an infringement in cricket
Technology
  • An abbreviation of the words "On The Fly" to refer to procedural generation, a method of creating data algorithmically as opposed to manually
  • OTF knife (out-of-the-front knife), a pocketknife with a blade that opens and closes through a hole in one end of the handle
  • OpenType (Font), a standard for digital typography, which uses font files with the file extension .otf
  • Output Text Format, the SAP R/3 data format
  • Optical transfer function
  • "Off-The-Film", a camera metering system in which the reading is taken directly at (or from) the focal plane. See also Through-the-lens metering

Music

  • Only the Family (commonly abbreviated OTF), a hip-hop music collective founded by American rapper Lil Durk and based in Chicago, Illinois
  • OTF, a record label of Only the Family collective
Chemistry
  • The functional group, trifluoromethanesulfonate or simply triflate, represented by the symbol -OTf
Organizations
  • Ontario Teachers' Federation
  • Open Technology Fund, a U.S. Government funded program that was created in 2012
Other
  • Some companies also use OTF as an abbreviation for 'Order To Fix'
https://en.wikipedia.org/wiki/OTF
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