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Transfer function for HDR displays
The perceptual quantizer (PQ), published by SMPTE as SMPTE ST 2084, is a transfer function that allows for HDR display by replacing the gamma curve used
Perceptual_quantizer
Audio technology company
LCD screens with LED backlight units by means of local dimming. Perceptual Quantizer (PQ), published by SMPTE as SMPTE ST 2084, is a transfer function
Dolby
ITU-R recommendation
high-dynamic-range television (HDR-TV) by recommending the use of the perceptual quantizer (PQ [SMPTE ST 2084]) or hybrid log–gamma (HLG) transfer functions
Rec._2100
Enhanced signal representation in digital media
system other than a conventional gamma curve include the HLG and perceptual quantizer (PQ). HLG and PQ require a bit depth of 10-bits per sample. The dynamic
High_dynamic_range
video was added which can be encoded with hybrid log–gamma (HLG) or perceptual quantizer (PQ). HDR video can be encoded with the Rec. 2020 color space. YouTube
List_of_YouTube_features
Relationship between electrical signal and light
These transfer functions have been developed to allow HDR display: Perceptual quantizer: PQ is a transfer function developed by Dolby for HDR and allowing
Transfer_functions_in_imaging
Open HDR standard
compressed video sources) PQ10 refers to an HDR format that uses perceptual quantizer, 10-bit and Rec. 2100 color primaries without having any metadata
HDR10
Topics referred to by the same term
Previous question, a motion in Robert's Rules of Order to close debate Perceptual quantizer, a transfer function for video display Picture quality; see video
PQ
Image processing technique
k-means as a color quantizer. He demonstrated that an efficient implementation of k-means outperforms a large number of color quantization methods. Portrait
Color_quantization
High dynamic range color space
transformation can be used with RGB signals derived from either the perceptual quantizer (PQ) or hybrid log–gamma (HLG) nonlinearity functions, but is most
ICtCp
Digital audiovisual data interface
(version 1.4) 4 audio streams (version 2.0) Dual View (version 2.0) Perceptual quantizer HDR EOTF (SMPTE ST 2084) (version 2.0a) Hybrid log–gamma (HLG) HDR
HDMI
Continuous progression from past to future
(ultradian) timekeeping. Mental chronometry is the use of response time in perceptual-motor tasks to infer the content, duration, and temporal sequencing of
Time
2013 open and royalty-free video coding format
functions and supports HDR video with hybrid log–gamma (HLG) or perceptual quantizer (PQ). An early comparison that took varying encoding speed into account
VP9
Algorithm for objectively measuring perceived audio quality
Perceptual Evaluation of Audio Quality (PEAQ) is a standardized algorithm for objectively measuring perceived audio quality, developed in 1994–1998 by
Perceptual Evaluation of Audio Quality
Perceptual_Evaluation_of_Audio_Quality
Scientific study of sound perception
stereo Sample requantization Non-linear quantization Vector quantization Temporal noise shaping (TNS) Perceptual noise substitution (PNS) Spectral band
Psychoacoustics
Video and image technology for HDR displays
same as the HDR10 format, except it lacks metadata. It uses the perceptual quantizer (PQ) transfer function, Rec. 2020 color primaries and a bit depth
High-dynamic-range_television
Standard color space with color-opponent values
for perceptual lightness and a* and b* for the four unique colors of human vision: red, green, blue and yellow. CIELAB was intended as a perceptually uniform
CIELAB_color_space
High dynamic range standard that was jointly developed by the BBC and NHK
announced that their 2015 4K OLED TVs would support HDR from HLG and perceptual quantizer (PQ). Blackmagic Design released an update for DaVinci Resolve that
Hybrid_log–gamma
Organization
Main 10 profile Level 5.1 and process Hybrid log–gamma (HLG10) or Perceptual quantizer (PQ10)/HDR10 content using Rec. 2020 color primaries. The guidelines
Ultra_HD_Forum
Next-generation TV standard based on ATSC
Progressive video supports HDR using hybrid log–gamma (HLG) and perceptual quantizer (PQ) transfer functions. ATSC 3.0 supports encryption of the signal
ATSC_3.0
Compact encoding of digital data
like quantization that reduce aspects of the source data that are (more or less) irrelevant to the human visual perception by exploiting perceptual features
Data_compression
Audio performance differences between technologies
distinguished from those without when generated with high quality loudspeakers. A perceptual study by Nishiguchi et al. (2004) concluded that "no significant difference
Comparison of analog and digital recording
Comparison_of_analog_and_digital_recording
Video encoding standard
Quantization is performed by taking each of the 64 frequency values of the DCT block, dividing them by the frame-level quantizer, then dividing
MPEG-1
Digital audio format
bit rates). The MP3 lossy compression algorithm takes advantage of a perceptual limitation of human hearing called auditory masking. In 1894, the American
MP3
Software library for similarity search
Retrieval-Augmented Few-shot Image Classification". arXiv:2312.06868 [cs.CV]. "Perceptual hashing tools". GitHub. "Indexing 1T vectors". GitHub. "OpenSearch Approximate
FAISS
Digital image having no color information
a gamma-compressed nonlinear scale, which better approximates uniform perceptual increments for both dark and light shades, usually making these 256 shades
Grayscale
STFT-based (MS-STFT) discriminator during training, which serves as a perceptual loss function to reduce artifacts and produce high-quality samples. A
EnCodec
JPEG encoder
JPEG encoders. Guetzli supports only the top of JPEG's quality range (quantizer settings 84–100) and supports only sequential (non-"progressive") encoding
Guetzli
Conceptual scale
The mel scale (after the word melody) is a perceptual scale of pitches judged by listeners to be equal in distance from one another. The reference point
Mel_scale
Lossy compression method for reducing the size of digital images
greater compression without a significant effect on perceptual image quality (or greater perceptual image quality for the same compression). The compression
JPEG
Topics referred to by the same term
Goran Parlov SMPTE ST 2084, standard #2084 from SMTPE, also called Perceptual Quantizer (PQ) United Nations Security Council Resolution 2084, resolution
2084
Motion video technology
removal of imperceptible motion video artifacts. The perceptual strength of the Human Visual Model quantizer generation process is calibrated in visiBels (vB)
ZPEG
Inaccuracy in computer graphics
Bovik, Alan C. (2025-10-01). "Understanding, detecting, and removing perceptual banding artifacts in compressed videos". Signal Processing: Image Communication
Colour_banding
Digitally coded format for audio signals
lossy formats based on modified discrete cosine transform (MDCT) and perceptual coding algorithms. Lossless audio coding formats such as FLAC and Apple
Audio_coding_format
Image dithering algorithm
palette. The first threshold maps were designed by hand to minimise the perceptual difference between a grayscale image and its two-bit quantisation for
Ordered_dithering
Type of data compression
AAC). In the case of audio data, a popular form of transform coding is perceptual coding, which transforms the raw data to a domain that more accurately
Lossy_compression
Assessment of the audio output from an electronic device
(HASQI) High fidelity Loudspeaker measurement Perceptual Evaluation of Audio Quality (PEAQ) Perceptual Evaluation of Speech Quality (PESQ) TIA/EIA-920 –
Sound_quality
Standard for HDTV image encoding and signal characteristics
approximation of the CIE Y coordinate (which is presumed to measure the perceptual brightness of the color) modified by the non-linear function above. However
Rec._709
Speech coding algorithm
model; Performing a search in closed-loop in a "perceptually weighted domain". Applying vector quantization (VQ) The original algorithm as simulated in 1983
Code-excited linear prediction
Code-excited_linear_prediction
Digital video coder/decoder
separates the luma signal, which is perceptually much more important, from the chroma signal, which is less perceptually important and which can be represented
Video_codec
Technology that records, stores, and reproduces sound
Cummiskey, Nikil S. Jayant and James L. Flanagan at Bell Labs in 1973. Perceptual coding was first used for speech coding compression, with linear predictive
Digital_audio
Theory about lossy data compression
estimation and decision theory. In audio compression, perceptual models (and therefore perceptual distortion measures) are relatively well developed and
Rate–distortion_theory
Curve simplification algorithm
cartographic generalization. It is recognized as the one that delivers the best perceptual representations of the original lines. But a self-intersection could occur
Ramer–Douglas–Peucker algorithm
Ramer–Douglas–Peucker_algorithm
Marker covertly embedded in a signal
digital watermark is called imperceptible if the watermarked content is perceptually equivalent to the original, unwatermarked content. In general, it is
Digital_watermarking
Linear prediction coefficients
Md.; Chakroborty, Sandipan; Saha, Goutam (Jan 2010). "On the use of perceptual Line Spectral pairs Frequencies and higher-order residual moments for
Line_spectral_pairs
Lossy audio compression format
noise shaping (TNS), the Kaiser window (described below), a nonuniform quantizer, and a reworking of the bitstream format to handle up to 16 stereo channels
Advanced_Audio_Coding
2018 open and royalty-free video coding format
shaped after the original component. It is the visual equivalent of the Perceptual Noise Substitution technique used in AC3, AAC, Vorbis, and Opus audio
AV1
Mathematical signal manipulation by computers
(2005). "Improved noise-robustness in distributed speech recognition via perceptually-weighted vector quantisation of filterbank energies". Ninth European
Digital_signal_processing
Read-only optical disc for high-fidelity audio storage
Joshua D. (27 June 2016). "A Meta-Analysis of High Resolution Audio Perceptual Evaluation". Journal of the Audio Engineering Society. 64 (6). J. Audio
Super_Audio_CD
Data visualization technique
proportional to differences in data. Perceptually uniform color schemes are carefully designed to maintain consistent perceptual differences and offer a better
Heat_map
Lossy audio compression applied to human speech
Foundation. 8 August 2023. ITU-T Test Signals for Telecommunication Systems Test Samples ITU-T Perceptual evaluation of speech quality (PESQ) tool Sources
Speech_coding
Speech analysis and encoding technique
masking properties of the human ear. This later became the basis for the perceptual coding technique used by the MP3 audio compression format, introduced
Linear_predictive_coding
Electronic manipulation of audio signals
B. Bradley at the University of Surrey in 1987. LPC is the basis for perceptual audio coding and is widely used in speech coding, while MDCT coding is
Audio_signal_processing
Metric used to measure signal quality
for varying frame delays. Czekanowski distance Data compression ratio Perceptual Evaluation of Video Quality (PEVQ) Structural similarity index measure
Peak_signal-to-noise_ratio
Perceived video degradation
1109/TIP.2009.2034992. ISSN 1057-7149. PMID 19846374. S2CID 15356687. vmaf: Perceptual video quality assessment based on multi-method fusion, Netflix, Inc.,
Video_quality
Search algorithm
rule. Notice that the order of the points affects the resulting basis Perceptual hashing A.S. Mian, M. Bennamoun, and R. Owens, Three-dimensional model-based
Geometric_hashing
Visible interference in an image
purposely added for such purposes is called dither; it improves the image perceptually, though it degrades the signal-to-noise ratio. In the context of event
Image_noise
System for digitally encoding audio signals
data sheet Blech, Dominic; Yang, Min-Chi (2004). "DVD-Audio versus SACD: Perceptual Discrimination of Digital Audio Coding Formats" (PDF). Erich-Thienhaus-Institute
Direct_Stream_Digital
File format
and the CIELUV (u’, v’) chromaticity coordinates in order to provide a perceptually uniform color space. LogLuv allocates 8 bits for each of the u’ and v’
Logluv_TIFF
Widely used standard for video compression
inverse-quantization scaling Frequency-customized quantization scaling matrices selected by the encoder for perceptual-based quantization optimization An in-loop deblocking
Advanced_Video_Coding
Path of an object through spacetime
encompasses a large area of spacetime wherein paths which are straight perceptually are rendered as curves in spacetime to show their (relatively) more absolute
World_line
Family of digital color spaces
processing and perceptual uniformity, where the primary colors corresponding roughly to red, green, and blue are processed into perceptually meaningful information
YCbCr
American electrical engineer (1926–2012
Allen and Joe Hall's work on psychoacoustics, James D. Johnston's work on perceptual audio coding mp3, work on speech synthesis, and Lawrence Rabiner and Aaron
James_L._Flanagan
Overview of and topical guide to control engineering
Krener's theorem Least squares Lyapunov stability Minor loop feedback Perceptual control theory State observer Vector control Labview Matlab Simulink Embedded
Outline of control engineering
Outline_of_control_engineering
Recognition of a speaker from their voice
Technology Elisabeth Zetterholm (2003), Voice Imitation. A Phonetic Study of Perceptual Illusions and Acoustic Success, Phd thesis, Lund University. Md Sahidullah
Speaker_recognition
Ratio between the largest and smallest values that a certain quantity can assume
PMC 3405292. PMID 22837813. Hjortkjær, Jens; Walther-Hansen, Mads (2014). "Perceptual Effects of Dynamic Range Compression in Popular Music Recordings". Journal
Dynamic_range
blind system identification 2002 James Johnston For contributions in perceptual audio coding and its standardization 2002 Leo Ligthart For contributions
List of fellows of IEEE Communications Society
List_of_fellows_of_IEEE_Communications_Society
Data format used for audio compact discs
space yet allow it to be restored without any changes; and various lossy, perceptual coding formats like MP3, AAC, and Opus, compress the audio data to a greater
Compact_Disc_Digital_Audio
AI accelerator ASIC by Google
Machine "It is machine learning software being used for various kinds of perceptual and language understanding tasks" — Jeffrey Dean, minute 0:47 / 2:17 from
Tensor_Processing_Unit
normal text, making it easier to be recognized. They named this phenomenon Perceptual-Statistical Imperceptibility Conflict Effect (Psic Effect). An image or
List of steganography techniques
List_of_steganography_techniques
Partitioning a digital image into segments
Prentice-Hall, ISBN 0-13-030796-3 Barghout, Lauren, and Lawrence W. Lee. "Perceptual information processing system." Paravue Inc. U.S. Patent Application 10/618
Image_segmentation
Lossy and lossless image format
as with older formats. Perceptually optimized reference encoder which uses a perceptual color space, and adaptive quantization. JPEG XL allows ultra-high-resolution
JPEG_XL
Control concept
Open-loop controller – Control system whose input is independent of output Perceptual control theory – Psychological theory Positive feedback – Loop that increases
Negative_feedback
Means of quantifying system performance
468 noise weighting Lindos Electronics Loudspeaker measurement Noise Perceptual Evaluation of Audio Quality (PEAQ) Phase distortion Physics of music Rumble
Audio_system_measurements
List of concepts in artificial intelligence
objects that reside in the real-world are "augmented" by computer-generated perceptual information, sometimes across multiple sensory modalities, including visual
Glossary of artificial intelligence
Glossary_of_artificial_intelligence
Machine learning technique useful for dimensionality reduction
eswa.2011.04.210. Zheng, G.; Vaishnavi, V. (2011). "A Multidimensional Perceptual Map Approach to Project Prioritization and Selection". AIS Transactions
Self-organizing_map
Excessive displeasing noise
RA, Geipel I, Taylor RC, Ryan MJ, Halfwerk W (September 2016). "Bats perceptually weight prey cues across sensory systems when hunting in noise". Science
Noise_pollution
Feature detection algorithm in computer vision
orientation, edge density and hue information in a unified form combining perceptual information with spatial encoding. The object recognition scheme uses
Scale-invariant feature transform
Scale-invariant_feature_transform
Technique used in signal processing and data compression
lossy compression, lossless compression Encoding operations — quantization, perceptual weighting, entropy encoding, variable bitrate encoding Digital
Discrete_cosine_transform
Method by which information is represented in the brain
has a peak value such that activity of the neuron is greatest if the perceptual value is close to the peak value, and becomes reduced accordingly for
Neural_coding
Mathematical technique used in data compression and analysis
multimedia like audio and video do not consistently match the efficiency and perceptual quality of current Discrete Cosine Transform-based systems. For one-dimensional
Wavelet_transform
Video compression technique, used to efficiently predict and generate video frames
Archived from the original on 2009-02-20. Zeng, Kai, et al. "Characterizing perceptual artifacts in compressed video streams." IS&T/SPIE Electronic Imaging.
Motion_compensation
PMID 20634557. S2CID 3198903. Gong, Yunchao, and Svetlana Lazebnik. "Iterative quantization: A procrustean approach to learning binary codes." Computer Vision and
List of datasets in computer vision and image processing
List_of_datasets_in_computer_vision_and_image_processing
Magnetic tape-based HD videocassette format for camcorders
the coded bitrate of 384 kbit/s, MPEG-1 Layer 2 audio is regarded as perceptually lossless. Two major versions of HDV are HDV 720p and HDV 1080i. The former
HDV
Parallel computing paradigm
tracking, and generating visual stimuli via emergent patterns to gauge perceptual resonances. CNN processors have been used for medical and biological research
Cellular_neural_network
List of definitions of terms and concepts used in electrical engineering and electronics
source to be reconstructed; useful for images or music, where the human perceptual system compensates for errors or missing information. loudspeaker An electroacoustic
Glossary of electrical and electronics engineering
Glossary_of_electrical_and_electronics_engineering
Application of quantum mechanics and chemistry to biology
Berthier, M.; Prencipe, N.; Provenzi, E. (2024). "Split-quaternions for perceptual white balance: A quantum information-based chromatic adaptation transform
Quantum_biology
American scientist and engineer
transformations that occur between the physical input initiating a perceptual process and eventual perceptual phenomena. Observing graded synaptic transmission in the
Carver_Mead
Algorithmic processing of digitally-represented images
motion estimation, motion compensation, inter-frame prediction, quantization, perceptual weighting, entropy encoding, variable encoding, and motion vectors
Digital_image_processing
1990 4 August 1992 11 December 1990 11 December 2010 Adaptive non-linear quantizer U.S. patent 5,136,377 file+20: [2010, 12, 11] grant+17: [2009, 8, 4] AT&T
List of United States MPEG-2 patents
List_of_United_States_MPEG-2_patents
PERCEPTUAL QUANTIZER
PERCEPTUAL QUANTIZER
Boy/Male
Indian, Sanskrit
To be Offered as Oblation; Perpetual Fire
Boy/Male
Arabic, Muslim
Everlasting; Perpetual; For Ever
Boy/Male
Muslim
Everlasting, Perpetual, For
Boy/Male
Indian, Punjabi, Sikh
Disciple; Student; Seeker; Perpetual Learner
Girl/Female
Indian, Sanskrit
Permanent; Perpetual
Girl/Female
Australian, German, Latin, Swedish
Perpetual; Continual; Everlasting
Boy/Male
Indian, Sanskrit
Permanent; Perpetual
Boy/Male
Indian
Everlasting, Perpetual, For
Girl/Female
Latin
Perpetual; continual.
Boy/Male
Indian, Sanskrit
Permanent; Perpetual
PERCEPTUAL QUANTIZER
PERCEPTUAL QUANTIZER
Surname or Lastname
English
English : topographic name for someone who lived on a promontory or elevation, from Old English bil(e), literally denoting the bill or beak of a bird, but also used in a transferred sense.
Boy/Male
Hindu
Good teacher
Surname or Lastname
English
English : unexplained.
Boy/Male
Hindu
One of the kauravas
Boy/Male
Indian
Lovely Angel
Girl/Female
Muslim/Islamic
Intelligent
Boy/Male
Indian
Tiger
Boy/Male
Hindu
Karthikeya - son of Lord Shiva and parvati. he travels on a peacock (Mayur), Lord of peacock
Girl/Female
Latin
Protectress of horses.
Boy/Male
German
Mighty and brave or strong judgment.
PERCEPTUAL QUANTIZER
PERCEPTUAL QUANTIZER
PERCEPTUAL QUANTIZER
PERCEPTUAL QUANTIZER
PERCEPTUAL QUANTIZER
a.
Neverceasing; continuing forever or for an unlimited time; unfailing; everlasting; continuous.
a.
Infinite; perpetual, as a canon whose end leads back to the beginning. See Infinite, a., 5.
a.
Made perpetual; perpetuated.
a.
Removable, as distinguished from perpetual; -- said of an officer.
n.
One who is corrigible; especially, a hardened criminal; as, the perpetual imprisonment of incorrigibles.
n.
The severing or sequestering of a benefice to the perpetual use of a spiritual corporation. Blackstone.
a.
Preceptive.
n.
A perpetual annuity.
a.
Not ceasing; perpetual.
n.
A disease in which there is a perpetual and insatiable appetite for food; a diseased and voracious appetite.
n.
One of the people who lived beyond the North wind, in a land of perpetual sunshine.
a.
Continuing without cessation or intermission; perpetual; unceasing; never failing.
adv.
In a perpetual manner; constantly; continually.
a.
Continuing indefinitely, or during a long period; perpetual; sometimes used, colloquially, as a strong intensive; as, this everlasting nonsence.
a.
Continued without intermission; perpetual; ceaseless; constant.
n.
The state or condition of being perpetual.
n.
The quality or state of being perpetual; as, the perpetuity of laws.
n.
The upper part of a glacier, above the limit or perpetual snow. See Galcier.
n.
Something that surrounds or invests; as, air . . . being a perpetual ambient.
n.
Something that is perpetual.