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Digital imaging calibration technique
Flat-field correction (FFC) is a digital imaging technique to mitigate pixel-to-pixel differences in the photodetector sensitivity and distortions in
Flat-field_correction
Method of reducing image noise in long-exposure photographs
considered a best practice, along with flat-field correction, for astrophotography. Bias frame Flat-field correction "Dark-Frame". RawPedia. Retrieved 2020-02-22
Dark-frame_subtraction
Noise pattern on digital imaging sensors
at certain, fixed pixel locations. FPN is commonly suppressed by flat-field correction (FFC) that uses DSNU and PRNU to linearly interpolate and reduce
Fixed-pattern_noise
Noise in digital sensors
processing and correcting pipeline. Color balance Color correction Fixed-pattern noise Flat-field correction Image sensor "What is Photo-response Non-uniformity
Photo_response_non-uniformity
Topics referred to by the same term
Georgia FFC Cambridge process, an electrochemical process Flat-field correction Flexible flat cable Front-facing camera Fee-for-carriage, in Canada Falkirk
FFC
Darkening an image's periphery versus the center
without the vignetting being obvious. Dodging and burning Feathering Flat-field correction Metering mode Vignette (philately) "Canon EF 24-70 mm f/2.8L II
Vignetting
Computer graphics 3D reference model
enhance accuracy, dark current is subtracted from the images, and flat-field correction is applied to compensate for cosine fall-off and lens fall-off.
Cornell_box
File format used in digital photography
and flat-field correction dark frame subtraction optical correction – lens distortion, vignetting, chromatic aberration and color fringing correction contrast
Raw_image_format
Medical imaging procedure
largely be reduced by intensity normalization, also referred to as flat field correction. Remaining rings can be suppressed by a transformation to polar
CT_scan
State prison in Union County, Florida
The Union Correctional Institution, formerly referred to as Florida State Prison, and also commonly known as Raiford Prison, is a Florida Department of
Union Correctional Institution
Union_Correctional_Institution
used as an interface for industrial cameras. Fixed-pattern noise. Flat-field correction. Frame grabber. An electronic device that captures individual, digital
Glossary_of_machine_vision
Controlled color representations on Linux operating system
camera color separation performance under different illuminants, and flat-field correction of test-chart photos. LPROF (or LCMS Profiler) was a GUI tool for
Linux_color_management
Digital image taken with no exposure to capture sensor noise
time needed to obtain dark-frame data for dark frame subtraction. Flat-field correction Dark-frame subtraction Measuring CCD Read Noise Bias Frame v t e
Bias_frame
Type of astronomical telescope
as a Schmidt–Väisälä camera or sometimes as Väisälä camera. This flat-field correction is not perfect, as images suffer from chromatic aberration with
Schmidt–Väisälä_camera
Optical aberration
Petzval field curvature, named for Joseph Petzval, describes the optical aberration in which a flat object normal to the optical axis (or a non-flat object
Petzval_field_curvature
Pair of telescopes mounted side-by-side
plano-concave/ double convex achromatic doublet (the flat part of the former facing the eye) and the field lens is a double-convex singlet. A reversed Kellner
Binoculars
Flash freezing Flash point Flat-field correction Flat lens Flat weighting Flatness (cosmology) Flatness (liquids) Flatness problem Flattening Flavor-changing
Index_of_physics_articles_(F)
Unit of measurement of optical power
enables an eye care professional to prescribe corrective lenses as a simple correction to the eye's optical power, rather than doing a detailed analysis of the
Dioptre
Type of gravity anomaly
is the free-air correction. A Bouguer reduction is called simple (or incomplete) if the terrain is approximated by an infinite flat plate called the
Bouguer_anomaly
Facility where people are kept as punishment
also known as a jail, gaol, penitentiary, detention center, correction center, correctional facility, or remand center, is a facility where people are
Prison
Emission of electrons induced by an electrostatic field
unrealistic situation of a flat emitter and an exact triangular barrier. For real emitters and real barriers a "slope correction factor" σFN has to be introduced
Field_electron_emission
Extension of quantum field theory to curved spacetime
emitted by black holes. Ordinary quantum field theories, which form the basis of Standard Model, are defined in flat Minkowski space, which is an excellent
Quantum field theory in curved spacetime
Quantum_field_theory_in_curved_spacetime
Compass that senses direction electronically
autopilot for course correction. To avoid inaccuracies created by the vertical component of the field, the fluxgate array must be kept as flat as possible by
Fluxgate_compass
Mathematical theory of the geometry of space and time
completely accounts for all Newtonian gravitational effects. As expected, this correction factor is directly proportional to G {\displaystyle G} and M {\displaystyle
Curved_spacetime
Each entry on this list of common misconceptions is worded as a correction; the misconceptions themselves are implied rather than stated. These entries
List of common misconceptions about history
List_of_common_misconceptions_about_history
Statistical theory
Information field theory (IFT) is a Bayesian statistical field theory relating to signal reconstruction, cosmography, and other related areas. IFT summarizes
Information_field_theory
US Army augmented reality headset
Army announced a "course correction" to the program, due to soldiers reporting physical ailments after using IVAS in the field. The main symptoms were
Integrated Visual Augmentation System
Integrated_Visual_Augmentation_System
Property of space that quantifies the magnetic influence at a given location
is valid for a flat loop of any shape and orientation. As described above, there is no net force on a loop in a uniform magnetic field. However, non-uniform
Magnetic_field
Theoretical framework in physics
scale—can be resolved by relating the Higgs field and its super-partner, the Higgsino. Radiative corrections due to Higgs boson loops in Feynman diagrams
Quantum_field_theory
Mirror whose surface can be deformed
whose surface can be deformed, in order to achieve wavefront control and correction of optical aberrations. Deformable mirrors are used in combination with
Deformable_mirror
Type of quantum state in de Sitter spacetime
Parikh, Maulik K; van der Schaar, Jan Pieter (28 April 2006). "Universal correction to the inflationary vacuum". Journal of High Energy Physics. 2006 (4):
Bunch–Davies_vacuum
and Harper are tasked with escorting four juvenile delinquents to a correctional facility, but find themselves entrapped in a prison riot during their
List_of_The_Rookie_episodes
Each entry on this list of common misconceptions is worded as a correction; the misconceptions themselves are implied rather than stated. These entries
List of common misconceptions about science, technology, and mathematics
List_of_common_misconceptions_about_science,_technology,_and_mathematics
Lens or mirror in optical instruments
corrected, the objective is called a "plan" objective, and has a flat image across the field of view. The working distance (sometimes abbreviated WD) is the
Objective_(optics)
Optical correction instrument
Corrective Optics Space Telescope Axial Replacement (COSTAR) is an optical correction instrument designed and built by NASA. It was created to correct the spherical
Corrective Optics Space Telescope Axial Replacement
Corrective_Optics_Space_Telescope_Axial_Replacement
Failure of a lens to focus all colors on the same point
the degree of correction can be further increased, as seen in an apochromatic lens or apochromat, which provides perfect correction at three wavelengths
Chromatic_aberration
Study of the properties of codes and their fitness
Codes are used for data compression, cryptography, error detection and correction, data transmission and data storage. Codes are studied by various scientific
Coding_theory
A flat lens is a lens whose flat shape allows it to provide distortion-free imaging, potentially with arbitrarily-large apertures. The term is also used
Flat_lens
Electrical engineering concept
(MCB) would come into use. It may be said that radio interference and its correction arose with the first spark-gap experiment of Marconi in the late 1800s
Electromagnetic_compatibility
Study of the physical properties of the Earth's gravity field
is not a flat plate (the usual case!) we use for H the local terrain height value but apply a further correction called the terrain correction. Deflection
Physical_geodesy
Unobstructed line between an observer and a subject of interest
it important?". WhatIs. Retrieved 2024-02-08. "What is Lens Distortion Correction | How Does LDC Work?". info.verkada.com. Retrieved 2024-02-08. "What does
Line_of_sight
Part of the human body where the legs join the torso
Davis, Sheena, and Alistair Furnell. Personal Equipment and Clothing Correction Factors for the Australian Army: A Pilot Survey. No. DSTO-TR-3044. Defence
Crotch
Eyeglasses with two distinct optical powers
are commonly prescribed to people with presbyopia who also require a correction for myopia, hyperopia, and/or astigmatism. Benjamin Franklin is generally
Bifocals
Force resulting from the quantisation of a field
In quantum field theory, the Casimir effect (or Casimir force) is a physical force acting on the macroscopic boundaries of a confined space which arises
Casimir_effect
Device that optically scans images, printed text
much greater depth of field, they are more forgiving when it comes to scanning documents that are difficult to get perfectly flat against the platen (such
Image_scanner
Color model based on red, green and blue
obtain the correct response, a gamma correction is used in encoding the image data, and possibly further corrections as part of the color calibration process
RGB_color_model
Second layer of the OSI networking model
addition to ARQ provided by some transport-layer protocols, to forward error correction (FEC) techniques provided on the physical layer, and to error-detection
Data_link_layer
Free online crowdsourced encyclopedia
establishes a sense within the community that this is a priority ... [and that correction requires that] it has to be more than words." Maher served as executive
Wikipedia
City in Arkansas, United States
Office." Arkansas Department of Correction. Retrieved on June 28, 2010. "2006 Facts Brochure." Arkansas Department of Correction. July 1, 2005 – June 30, 2006
Pine_Bluff,_Arkansas
Surgical procedure to enhance or reconstruct a human nose
AD), which described plastic surgery techniques and procedures for the correction and the reconstruction of the nose and other body parts. At the Byzantine
Rhinoplasty
Electromagnetic effect in physics
1103/PhysRevB.74.165426. hdl:10067/613600151162165141. Annraoi M. de Paor. Correction to the classical two-species Hall Coefficient using twoport network theory
Hall_effect
Theories about the end of the universe
consensus among cosmologists that the shape of the universe is considered "flat" (parallel lines stay parallel), and the universe will continue to expand
Ultimate_fate_of_the_universe
Vacuum tube used to display images
surface-conduction electron-emitter display and field-emission displays, respectively. They both were flat-panel displays that had one (SED) or several (FED)
Cathode_ray_tube
Wilshire The Bunny Museum The Broad Burbank City Hall Burbank Studios Burro Flats Painted Cave Cabrillo Beach Cabrillo Marine Aquarium Cafe Brass Monkey California
List of tourist attractions in Los Angeles
List_of_tourist_attractions_in_Los_Angeles
Scottish serial killer (1945–2018)
Machine. Wildbore, Helen. "Human Rights Act Reporting in the Media: Corrections and Clarifications". Retrieved 23 June 2015 – via publications.parliament
Dennis_Nilsen
County jail in Utah, United States
Purgatory Correctional Facility is the county jail of Washington County, Utah. Also known as the Washington County Jail, it is located near St. George
Purgatory Correctional Facility
Purgatory_Correctional_Facility
Computer output device
advanced hardware driver for backlit modules with local zones of uniformity correction. Computer monitors are provided with a variety of methods for mounting
Computer_monitor
Surgery to correct the deformities and defects of the auricle
and might also require correction. Darwinian ear — A defect wherein the rim cartilage of the conchal bowl of the ear is flat, rather than folded inwards;
Otoplasty
Branch of theoretical physics
potential alone is insufficient to define the electric field exactly. As a result, one must add a correction factor, which is generally done by subtracting the
Classical_electromagnetism
Specialized Cassegrain telescope
designed to eliminate off-axis optical errors (coma). The RCT has a wider field of view free of optical errors compared to a more traditional reflecting
Ritchey–Chrétien_telescope
Country primarily in North America
state prisons, 98 federal prisons, 3,116 local jails, 1,277 juvenile correctional facilities, 220 immigration detention facilities, and 77 Indian country
United_States
Photographic optic
generally project a circular image which is only required to have acceptable correction of aberrations over a diameter comparable to the largest intended film/sensor
Large_format_lens
Theory of rapid universe expansion
cause large corrections that could prevent inflation. This problem has not yet been resolved and some cosmologists argue that the small field models, in
Cosmic_inflation
Class of programmable logic device
optimized silicon objects, they offer higher performance in flat field error correction, fast Fourier transform computation, medical imaging, machine
Field-programmable object array
Field-programmable_object_array
Raw photo processing software
Perspective adjustment Dark frame subtraction Flat field removal (hue shifts, dust removal, vignetting correction) Hot and dead pixel filters Metadata (Exif
RawTherapee
2024 lunar landing mission
in a 92 km (57 mi) lunar orbit. On February 22 IM indicated a "lunar correction maneuver" had raised the orbit. The lander spent approximately 24 hours
IM-1
Characteristic of an optical system
another, provided there is no refractive power at the interface (e.g., a flat interface). The exact definition of the term varies slightly between different
Numerical_aperture
Lowest possible energy of a quantum system or field
and Delbrück scattering. These effects are usually called "radiative corrections". In more complex nonlinear theories (e.g. QCD) zero-point energy can
Zero-point_energy
Emission of secondary X-rays from a material excited by high-energy X-rays
casting them into a flat disc or "bead". Prepared in this form, a virtually universal calibration is applicable. Further corrections that are often employed
X-ray_fluorescence
German computer scientist and engineer (1910–1995)
machines, which were special purpose devices which computed aerodynamic corrections to the wings of radio-controlled flying bombs. The S2 featured an integrated
Konrad_Zuse
Type of AI with wide-ranging abilities
test", also known as the Flat Pack Furniture Test, involves an AI controlling a robot which attempts to assemble an Ikea flat-pack furniture product after
Artificial general intelligence
Artificial_general_intelligence
Separation between human breasts
Collins (2015). "Treatment Strategy for Improving Consistency in Aesthetic Correction". Plastic and Reconstructive Surgery. 136 (2): 269e–270e. doi:10.1097/PRS
Cleavage_(breasts)
Visual arts technique
fisheye effect. The heavy barrel distortion often requires rectilinear correction before applications in detection, tracking or navigation. Some storytellers
360-degree_video
trial-and-error. Acoustic lobing Midwoofer-tweeter-midwoofer (A technique for the correction of lobe tilting without having to time-align the drivers) Ed Long (audio
Loudspeaker_time_alignment
American politician (born 1955)
provisions for 206 new hires, such as two police cadet classes and two correction officer classes. An additional $22 million has been allocated for early
Bruce_Blakeman
Relativistic wave equation in quantum mechanics
H.; Guth, A.H.; Kaiser, D.I. (2018). "Relativistic corrections to nonrelativistic effective field theories". Phys. Rev. D. 98 (1) 016011. arXiv:1712.00445
Klein–Gordon_equation
Type of telescope
not produce large, flat, and well-corrected imaging fields and therefore require some type of optical correction by way of field flatteners or coma correctors
Astrograph
Optical device which transmits and refracts light
and Germany. Spectacle makers created improved types of lenses for the correction of vision based more on empirical knowledge gained from observing the
Lens
Radius of the event horizon of a Schwarzschild black hole
the Schwarzschild solution to Einstein's field equations that corresponds to the radius of a sphere in flat space that has the same surface area as that
Schwarzschild_radius
equivalent width of a star's singly ionized calcium H and K lines, after correction for photospheric light, to the bolometric flux. Schröder et al. (2009)
Glossary_of_astronomy
Topics referred to by the same term
measure static pressure White noise or static noise, a random signal with a flat power spectral density Radio noise, in radio reception Noise (video), the
Static
get "dotted" the next time he is at bat as a form of intimidation or correction of the perceived offense. One of the "unwritten rules" is that the "dotting"
Glossary_of_baseball_terms
2024 film by Zack Snyder
course correction than a compounding of everything that tangled up its predecessor, The Scargiver is an uninvolving space opera full of flat notes."
Rebel Moon – Part Two: The Scargiver
Rebel_Moon_–_Part_Two:_The_Scargiver
Phenomenon resulting from the superposition of two waves
never observe superposition of the EM field directly as we can, for example, in water. Superposition in the EM field is an assumed phenomenon and necessary
Wave_interference
Open standard for inductive charging developed by the Wireless Power Consortium
power transfer is efficient.[citation needed] Base Stations typically have a flat surface – referred to as the Interface Surface – on top of which a user can
Qi_(standard)
Hypothetical elementary particle that mediates gravity
interactions, the classical theory of Feynman diagrams and semiclassical corrections such as one-loop diagrams behave normally. However, Feynman diagrams
Graviton
Type of semi-automatic pistol
double-action/single-action Beretta 92FS with a safety/decock lever but the flat spurless hammer of the 92D. 92G The 92G is a redesigned version of the 92FS
Beretta_92
Telescopes which utilize curved mirrors to form an image
curved mirror allows correction of the remaining distortion, astigmatism, from the Ritchey–Chrétien design. This allows much larger fields of view. The Dall–Kirkham
Reflecting_telescope
System of stars and interstellar matter
with higher signal-to-noise ratios on higher distances and redshifts. A correction for this method has been issued by Graham et al. in 2005, based on the
Galaxy
Alteration of the original shape of a signal
overall system undistorted. Correction is not possible if the inverse does not exist—for instance if the transfer function has flat spots (the inverse would
Distortion
Cosmological time duration
upper left corner of the figure, this correction factor is about F = 0.956 . {\displaystyle ~F=0.956~.} For a flat universe without any cosmological constant
Age_of_the_universe
Optical system where refraction and reflection are combined
greater degree of error correction than their all-lens or all-mirror counterparts, with a consequently wider aberration-free field of view. Their designs
Catadioptric_system
2006 film by Mike Judge
him to prison. Rita resumes her job as a prostitute. Joe is sent to a correctional facility, where a faulty ID machine registers his name as "Not Sure"
Idiocracy
Technology used to provide broadband to the end consumer via fiber
28 dB corresponds to about 20 km with a 32-way split. Forward error correction (FEC) may provide for another 2–3 dB of loss budget on GPON systems. As
Passive_optical_network
Display that uses the light-modulating properties of liquid crystals
A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid
Liquid-crystal_display
Form of vision aid
system, which has an increased depth of field, similar to using a small aperture in photography. This form of correction has many limitations that prevent it
Glasses
Incorrect or misleading information
disseminated to millions of individuals, reinforcing existing bias and making correction more difficult. These early trends set the foundation for modern digital
Misinformation
Prison in Minnesota, United States
Minnesota Correctional Facility – St. Cloud (MCF-St. Cloud) is a state prison in St. Cloud, Minnesota, United States. Established in 1889 as the Minnesota
Minnesota Correctional Facility – St. Cloud
Minnesota_Correctional_Facility_–_St._Cloud
Type of lens to improve visual perception
refocus the correction allowing clear vision at any distance. Unlike with bifocals, near-vision correction is achieved over the entire field of view, in
Corrective_lens
Type of artificial sheet material
The field expanded significantly in the early 2000s with the advent of plasmonic nanostructures and in the 2010s with the demonstration of "flat optics"
Electromagnetic_metasurface
FLAT FIELD-CORRECTION
FLAT FIELD-CORRECTION
Surname or Lastname
English
English : variant of Field.
Surname or Lastname
English (East Anglia) and Jewish (Ashkenazic)
English (East Anglia) and Jewish (Ashkenazic) : metonymic occupational name for someone who grew, sold, or treated flax for weaving into linen cloth, from (respectively) Middle English flax, German Flachs.
Male
Russian
(Филат) Pet form of Russian Feofilakt, FILAT means "God-guard."
Boy/Male
Japanese
Flat and level field.
Girl/Female
American, Australian
Flat Clearing
Boy/Male
Hindu, Indian
Till End
Boy/Male
Native American
Flat iron.
Boy/Male
Australian, British, English
A Field
Boy/Male
British, English
From the Flax Field
Boy/Male
French
From the flat land.
Surname or Lastname
English (chiefly East Anglia)
English (chiefly East Anglia) : topographic name for someone who lived on a flat, a patch of level or low-lying ground (Old Norse flat, flǫt).South German : variant of Flath 2.
Surname or Lastname
English
English : topographic name from Middle English feldes, plural or possessive of feld ‘open country’. This name is also found as a translation of equivalent names in other languages, in particular French Deschamps, Duchamp.
Boy/Male
Greek
Flat footed.
Surname or Lastname
English
English : topographic name for someone who lived on land which had been cleared of forest, but not brought into cultivation, from Old English feld ‘pasture’, ‘open country’, as opposed on the one hand to æcer ‘cultivated soil’, ‘enclosed land’ (see Acker) and on the other to weald ‘wooded land’, ‘forest’ (see Wald).Possibly also Scottish or Irish : reduced form of McField (see McPhail).Jewish (American) : Americanized and shortened form of any of the many Jewish surnames containing Feld.
Boy/Male
American, British, English
From the Flax Field
Boy/Male
English
In the field.
Male
Celtic
, Mars.
Boy/Male
American, Australian, British, English
From the Flax Field
Girl/Female
American, Australian, Chinese
Flat Grassland
Surname or Lastname
English
English : nickname from Middle English fÅde ‘child’, literally ‘that which is fed’, from Old English fÅda ‘food’.
FLAT FIELD-CORRECTION
FLAT FIELD-CORRECTION
Boy/Male
Tamil
Selvanathn | ஸேலà¯à®µà®¾à®¨à®¾à®¤à¯à®¨
Boy/Male
Australian, Christian, French, Irish
Holy; Sacred; Little Bone; Servant of the Saint's Disciple; From the New Town
Boy/Male
Norse
Young.
Boy/Male
Tamil
Vishrudh | விஷà¯à®°à¯à®¤Â
Boy/Male
Hindu
Sacred knowledge
Girl/Female
Tamil
Annapurni | அநà¯à®¨à®¾à®ªà¯à®°à¯à®¨à¯€
Goddess of food
Boy/Male
Hindu
Lord Ganesh, Soldier, Many
Girl/Female
French American
Strength. Mythological Celtic goddess of fire and poetry.
Biblical
the seer or prophet
Boy/Male
Indian, Punjabi, Sikh
Absorbed in the Soul
FLAT FIELD-CORRECTION
FLAT FIELD-CORRECTION
FLAT FIELD-CORRECTION
FLAT FIELD-CORRECTION
FLAT FIELD-CORRECTION
superl.
Unanimated; dull; uninteresting; without point or spirit; monotonous; as, a flat speech or composition.
adv.
Level with the ground; flat.
v. t.
To permit; to grant; as, to yield passage.
v. i.
A float board. See Float board (below).
v. t.
To make flat; to flatten; to level.
n.
Something broad and flat in form
n.
A flat stone used for paving.
v. i.
To take the field.
adv.
In a flat manner; directly; flatly.
v. t.
To lay with flags of flat stones.
superl.
Tasteless; stale; vapid; insipid; dead; as, fruit or drink flat to the taste.
superl.
Not sharp or shrill; not acute; as, a flat sound.
v. i.
To stand out in the field, ready to catch, stop, or throw the ball.
a.
Open, like a field.
superl.
Below the true pitch; hence, as applied to intervals, minor, or lower by a half step; as, a flat seventh; A flat.
superl.
Lacking liveliness of commercial exchange and dealings; depressed; dull; as, the market is flat.
n.
A flat-bottomed boat, without keel, and of small draught.
n.
Plain; flat; level.
v. i.
To become flat, or flattened; to sink or fall to an even surface.
adv.
To, in, or on the field.