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Resampling method
In digital signal processing, downsampling, subsampling, compression, and decimation are terms associated with the process of resampling in a multi-rate
Downsampling (signal processing)
Downsampling_(signal_processing)
Measurement of a signal at discrete time intervals
In signal processing, sampling is the reduction of a continuous-time signal to a discrete-time signal. A common example is the conversion of a sound wave
Sampling_(signal_processing)
Combining pixels in groups in digital image processing
108 megapixels and higher. Downsampling (signal processing) Image scaling "Small explanation of binning in image processing". Steve Cannistra. Retrieved
Pixel_binning
Type of multi-scale signal representation
multi-scale signal representation developed by the computer vision, image processing and signal processing communities, in which a signal or an image
Pyramid_(image_processing)
Digital signal resampling method
digital signal processing, upsampling, expansion, and interpolation are terms associated with the process of resampling in a multi-rate digital signal processing
Upsampling
Topics referred to by the same term
bootstrap) Sampling (statistics) Replication (statistics) Downsampling in signal processing Chroma subsampling Sub-sampling (chemistry) This disambiguation
Subsampling
Changing the sampling rate of a discrete signal
upsampling or upscaling; downsampling, downscaling, or decimation; and interpolation. The term multi-rate digital signal processing is sometimes used to refer
Sample-rate_conversion
Type of low-pass filter
goal is downsampling, each half-band filter needs to compute only half as many output samples as input samples. In digital signal processing, half-band
Half-band_filter
Function in discrete mathematics
digital signal processing, the input is often a sampled quantity or signal that varies over time, such as the pressure of a sound wave, a radio signal, or
Discrete_Fourier_transform
Method in digital signal processing
In digital signal processing, a digital down-converter (DDC) converts a digitized, band-limited signal to a lower frequency signal at a lower sampling
Digital_down_converter
Sampling higher than the Nyquist rate
In signal processing, oversampling is the process of sampling a signal at a sampling frequency significantly higher than the Nyquist rate. Theoretically
Oversampling
Technology that records, stores, and reproduces sound
and downsampling, may be used to change signals that have been encoded with a different sampling rate to a common sampling rate prior to processing. Audio
Digital_audio
Tool for digital signal processing
In signal processing, a filter bank (or filterbank) is an array of bandpass filters that separates the input signal into multiple components, each one
Filter_bank
Computational model used in machine learning
information processing in biological systems via connectionism. Unlike the von Neumann model, connectionist computing does not separate memory and processing.[citation
Neural network (machine learning)
Neural_network_(machine_learning)
Topics referred to by the same term
processes Resampling (statistics), resampling methods in statistics Resampling (bitmap), scaling of bitmap images Sample-rate conversion Downsampling
Resampling
Branch of machine learning
for convolutional neural networks (CNNs) with convolutional layers and downsampling layers began with the Neocognitron introduced by Kunihiko Fukushima in
Deep_learning
Transform in numerical harmonic analysis
Practical applications can also be found in signal processing of accelerations for gait analysis, image processing, in digital communications and many others
Discrete_wavelet_transform
Digital signal sample rate converter
In digital signal processing, a cascaded integrator–comb (CIC) is a computationally efficient class of low-pass finite impulse response (FIR) filter that
Cascaded integrator–comb filter
Cascaded_integrator–comb_filter
Ideal low-pass filter or averaging filter
In signal processing, a sinc filter can refer to either a sinc-in-time filter whose impulse response is a sinc function and whose frequency response is
Sinc_filter
Changing the resolution of a digital image
digital signal processing, the scaling of raster graphics is a two-dimensional example of sample-rate conversion, the conversion of a discrete signal from
Image_scaling
Method in signal processing
(2006). "Turning Overlap–Save into a Multiband Mixing, Downsampling Filter Bank". IEEE Signal Processing Magazine. 23 (March 2006): 158–161. Bibcode:2006ISPM
Overlap–save_method
Method for converting signals between digital and analog
oversampling method for encoding signals into low bit depth digital signals at a very high sample-frequency as part of the process of delta-sigma analog-to-digital
Delta-sigma_modulation
Type of feedforward neural network
convolutional neural networks are not invariant to translation, due to the downsampling operation they apply to the input. Feedforward neural networks are usually
Convolutional_neural_network
generation of two sequences at the subsequent level. Without employment of downsampling techniques, the length of the new sequences is maintained to be the same
Stationary_wavelet_transform
Type of statistical measure over subsets of a dataset
coefficients, it is called a boxcar filter. It is sometimes followed by downsampling. Given a series of numbers and a fixed subset size, the first element
Moving_average
Filter in electronics and signal processing
In electronics and signal processing, mainly in digital signal processing, a Gaussian filter is a filter whose impulse response is a Gaussian function
Gaussian_filter
Function for integral Fourier-like transform
Albina (2023-11-14). "High-Speed Wavelet Image Processing Using the Winograd Method with Downsampling". Mathematics. 11 (22): 4644. doi:10.3390/math11224644
Wavelet
Filter used to construct a smooth analog signal from a digital input
are: nearest-neighbor interpolation, with kernel the box filter – for downsampling, this corresponding to averaging; bilinear interpolation, with kernel
Reconstruction_filter
Technique used in signal processing and data compression
Nasir Ahmed in 1972, is a widely used transformation technique in signal processing and data compression. It is used in most digital media, including
Discrete_cosine_transform
Type of artificial neural network
parameter of the model. The introduction of identity mappings facilitates signal propagation in both forward and backward paths. If the output of the ℓ {\displaystyle
Residual_neural_network
System that converts an analog signal into a digital signal
ADCs are required in digital signal processing systems that process, store, or transport virtually any analog signal in digital form. TV tuner cards
Analog-to-digital_converter
Term for two forms of anti-aliasing
theorem of signal processing: To avoid it, a signal must be sampled at a rate at least twice the highest frequency present in the signal. An example
Temporal_anti-aliasing
Number of occurrences or cycles per unit time
type temporal rate. Audio frequency Bandwidth (signal processing) Chirp Cutoff frequency Downsampling Electronic filter Fourier analysis Frequency band
Frequency
Type of image blur produced by a Gaussian function
Gaussian blurring is commonly used when reducing the size of an image. When downsampling an image, it is common to apply a low-pass filter to the image prior
Gaussian_blur
nodes) as opposed to (n + 1) sets for the DWT. However, due to the downsampling process the overall number of coefficients is still the same and there is
Wavelet_packet_decomposition
Technique in neural networks for learning joint representations of text and images
suggested by. There is an average pooling of stride 2 at the start of each downsampling convolutional layer (they called it rect-2 blur pooling according to
Contrastive Language–Image Pre-training
Contrastive_Language–Image_Pre-training
Digital audio effect
bitcrush distortion. The control for sample rate reduction (a.k.a. "downsampling" or "averaging") is sometimes shown in Hz for a new sample rate, or as
Bitcrusher
Mathematical algorithm
{\displaystyle n\in \mathbb {Z} } . In the Z-transform notation: The downsampling operator ( ↓ 2 ) {\displaystyle (\downarrow 2)} reduces an infinite sequence
Fast_wavelet_transform
Lossy compression method for reducing the size of digital images
(called "downsampling" or "chroma subsampling"). The ratios at which the downsampling is ordinarily done for JPEG images are 4:4:4 (no downsampling), 4:2:2
JPEG
Sony image processors
line of image processors used in Sony digital cameras. It is currently used in many Sony α DSLR and mirrorless cameras. Image processing in the camera
Bionz
Software component for decoding video or audio
decoding Common prefilters include: denoising resizing (upsampling, downsampling) contrast enhancement deinterlacing (used to convert interlaced video
Filter_(video)
introduced the two basic types of layers in CNNs: convolutional layers, and downsampling layers. A convolutional layer contains units whose receptive fields cover
History of artificial neural networks
History_of_artificial_neural_networks
Image luminance mapping function
In addition to scaling, the problem also applies to other forms of downsampling (scaling down), such as chroma subsampling in JPEG's gamma-enabled Y′CbCr
Gamma_correction
signal processing systems need more room to store data during the processing, transmission and reception. In order to reduce the data to be processed
Multirate filter bank and multidimensional directional filter banks
Multirate_filter_bank_and_multidimensional_directional_filter_banks
Digital video coder/decoder
amount of spatial and temporal downsampling may also be used to reduce the raw data rate before the basic encoding process. The most popular encoding transform
Video_codec
format is 960x720. Horizontal downsampling is used in preference to vertical downsampling because vertical downsampling would break any interlacing, and
HD_Lite
Methods of approximating line segments for pixel displays
applications of this method include linear interpolation or downsampling in signal processing. There are also parallels to the Euclidean algorithm, as well
Line_drawing_algorithm
Practice of encoding color images
used instead, the upsampled image might look worse than with standard downsampling. Norkin, Andrey (27 September 2016). HDR color conversion with varying
Chroma_subsampling
Computer sound card
high-resolution audiostreams resulted in the Audigy's characteristic downsampling (to the DSP's native-rate of 48 kHz), for mixing with other audio sources
Sound_Blaster_Audigy
In wavelet theory
effect of T h {\displaystyle T_{h}} can be expressed in terms of the downsampling operator " ↓ {\displaystyle \downarrow } ": T h ⋅ x = ( h ∗ x ) ↓ 2.
Transfer_matrix
In signal processing, a polyphase matrix is a matrix whose elements are filter masks. It represents a filter bank as it is used in sub-band coders alias
Polyphase_matrix
Type of wavelet transform
In signal processing, the second-generation wavelet transform (SGWT) is a wavelet transform where the filters (or even the represented wavelets) are not
Second-generation wavelet transform
Second-generation_wavelet_transform
Explainable AI technique
reduction technique and, similarly to other pooling layers, it allows the downsampling of the feature maps, calculating representative values for a specific
Class_activation_mapping
Sound card
be done at 48 kHz sampling rate, as there was an issue with hardware downsampling. The Sound Blaster Live! 24-bit (SB0410) was not actually a member of
Sound_Blaster_Live!
Open-source algorithm library
an open-source library of algorithms for point cloud processing tasks and 3D geometry processing, such as occur in three-dimensional computer vision.
Point_Cloud_Library
Statistical sampling techniques
) {\displaystyle P(Y)} during training by applying undersampling or downsampling. This point can be illustrated with a simple example: Assume no predictive
Oversampling and undersampling in data analysis
Oversampling_and_undersampling_in_data_analysis
List of definitions of terms and concepts used in electrical engineering and electronics
connections handling significant power. downsampling A technique for reducing the number of signal samples processed by a digital system; decimation. Dqo
Glossary of electrical and electronics engineering
Glossary_of_electrical_and_electronics_engineering
| | 2 {\displaystyle E(x;x_{0})=||d(x)-x_{0}||^{2}} where d(·) is a downsampling operator such as Lanczos that decimates the image by a factor t. Inpainting
Deep_image_prior
filter Digital image processing Digital micromirror device Digital protective relay Digital signal controller Digital signal processing Digital television
Index of electrical engineering articles
Index_of_electrical_engineering_articles
Device that measures proper acceleration
integrating high-rate GNSS and accelerometer: on the possibility of downsampling GNSS data at reference stations". GPS Solutions. 27 (3): 157. Bibcode:2023GPSS
Accelerometer
at a lower rate than what was previously possible with naïve uniform downsampling. This property, known as "feature-selective stretching", can be used
Anamorphic_stretch_transform
Digital audio workstation
controls to dial in a custom curve), Redux (bit-depth reduction and downsampling), Dynamic Tube (models saturation produced by vacuum tubes), and Vinyl
Ableton_Live
Image compression standard and coding system
since the wavelet transformation already separates images into scales, downsampling is more effectively handled by dropping the finest wavelet scale. This
JPEG_2000
first major notable difference is that upsampling and downsampling are removed from both processes. Instead the filters in both the Laplacian Pyramid and
Contourlet
Human skin color
dark brown hair, and pale white to intermediate skin tones. In 2025 a downsampling experiment attempted to gauge phenotypes of ancient Europeans across
Light_skin
Cell-free DNA profiling method
samples are going to be contrasted with each other, one can perform downsampling on the reads to achieve comparability. The reported sequencing coverage
EPIC-Seq
DOWNSAMPLING SIGNAL-PROCESSING
DOWNSAMPLING SIGNAL-PROCESSING
Girl/Female
Latin
Sign.
Male
Slovene
Short form of Slovene Ignacij, possibly IGNAC means "unknowing."
Girl/Female
Australian, Danish, Finnish, German, Latin, Scandinavian, Swedish
Sign; New Victory
Female
Welsh
Pet form of Welsh Siân, SIANA means "God is gracious."
Boy/Male
Arabic, Hindu, Indian, Kannada, Muslim
Signal; Guidance; Direction
Female
English
Variant spelling of English Sienna, SIENA means "reddish-orange."Â
Girl/Female
Latin
Sign.
Boy/Male
Hindu, Indian
Monk; Signal
Girl/Female
Latin American Swedish
Sign.
Male
English
Scottish Anglicized form of Gaelic Fionnghall, FINGAL means "white valor."
Female
Norse
Variant spelling of Old Norse Signy, SIGNE means "new victory."
Boy/Male
Tamil
Signal, Goal
Surname or Lastname
English (Lancashire)
English (Lancashire) : habitational name from Wignal, a minor place near Holmes in the parish of Croston, so named from the genitive case of the Old English byname Wicga (see Wigley) + Old English h(e)alh ‘nook’, ‘corner’, ‘recess’.
Boy/Male
Hindu, Indian, Kannada, Tamil, Telugu
Brilliant; Signal; Symbol
Boy/Male
Tamil
Signal, Goal
Female
Hebrew
(סִיגָל) Hebrew name SIGAL means "treasure."
Boy/Male
Hindu
Signal, Goal
Girl/Female
Danish, German, Latin, Scandinavian, Swedish
Sign; Signal; Victory
Boy/Male
Arabic
Signal; Hint
Boy/Male
Hindu
Signal, Goal
DOWNSAMPLING SIGNAL-PROCESSING
DOWNSAMPLING SIGNAL-PROCESSING
Boy/Male
Welsh
Battle sharp.
Boy/Male
Hindu, Indian
Claw
Boy/Male
Hindu
Name of Lord Vishnu
Female
English
Variant spelling of English Marge, MARJE means "pearl."
Boy/Male
American, Australian, British, Chinese, Danish, English, French, German, Swedish
Wolf's Shield; Strong Defender; Shield Wolf
Girl/Female
Biblical
A dart.
Girl/Female
Arabic Muslim
Unique.
Girl/Female
Indian, Punjabi, Sikh
Successful in Swimming; Olympic Swimmer
Boy/Male
Tamil
Spandhana | ஸà¯à®ªà®¨à¯à®¤à®¾à®¨à®¾Â
Motivation, Responsible
Surname or Lastname
English and Scottish
English and Scottish : from the Middle English personal name Bat(t)e, a pet form of Bartholomew.
DOWNSAMPLING SIGNAL-PROCESSING
DOWNSAMPLING SIGNAL-PROCESSING
DOWNSAMPLING SIGNAL-PROCESSING
DOWNSAMPLING SIGNAL-PROCESSING
DOWNSAMPLING SIGNAL-PROCESSING
v. t.
To notify by a signals; to make a signal or signals to; as, to signal a fleet to anchor.
a.
Noticeable; distinguished from what is ordinary; eminent; remarkable; memorable; as, a signal exploit; a signal service; a signal act of benevolence.
n.
See Jingal.
v. i.
To make a sign or signal; to communicate directions or intelligence by signs.
/
or Signalled (imp. & p. p.) of Signal
a.
Conclusive; decisive; as, a final judgment; the battle of Waterloo brought the contest to a final issue.
a.
Of or pertaining to signals, or the use of signals in conveying information; as, a signal flag or officer.
n.
A seal; especially, in England, the seal used by the sovereign in sealing private letters and grants that pass by bill under the sign manual; -- called also privy signet.
v. t.
To communicate by signals; as, to signal orders.
p. pr. & vb. n.
of Signal
adv.
In a signal manner; eminently.
a.
Suitable to be signed; requiring signature; as, a legal document signable by a particular person.
n.
A token; an indication; a foreshadowing; a sign.
imp. & p. p.
of Sign
a.
Of or pertaining to the reign of a monarch; as, regnal years.
n.
A signal telegraph; an apparatus for giving signals by the disposition of lanterns, flags, oscillating arms, etc.
pl.
of Sigma
n.
One who signs or subscribes his name; as, a memorial with a hundred signers.
n.
A sign made for the purpose of giving notice to a person of some occurence, command, or danger; also, a sign, event, or watchword, which has been agreed upon as the occasion of concerted action.