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searching for Downsampling (signal processing) 36 found (49 total)

alternate case: downsampling (signal processing)

Sample-rate conversion (990 words) [view diff] no match in snippet view article find links to article

upsampling or upscaling; downsampling, downscaling, or decimation; and interpolation. The term multi-rate digital signal processing is sometimes used to refer

Half-band filter (241 words) [view diff] no match in snippet view article find links to article

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

Polyphase matrix (1,438 words) [view diff] no match in snippet view article find links to article

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

Discrete wavelet transform (5,217 words) [view diff] no match in snippet view article find links to article

computing a complete convolution x ∗ g {\displaystyle x*g} with subsequent downsampling would waste computation time. The Lifting scheme is an optimization where

Sinc filter (1,305 words) [view diff] no match in snippet view article find links to article

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

Digital down converter (479 words) [view diff] no match in snippet view article find links to article

In digital signal processing, a digital down-converter (DDC) converts a digitized, band-limited signal to a lower frequency signal at a lower sampling

Wavelet packet decomposition (1,273 words) [view diff] no match in snippet view article find links to article

(or 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

Second-generation wavelet transform (377 words) [view diff] no match in snippet view article find links to article

In signal processing, the second-generation wavelet transform (SGWT) is a wavelet transform where the filters (or even the represented wavelets) are not

Reconstruction filter (1,267 words) [view diff] no match in snippet view article find links to article

are: nearest-neighbor interpolation, with kernel the box filter – for downsampling, this corresponding to averaging; bilinear interpolation, with kernel

Pyramid (image processing) (1,435 words) [view diff] no match in snippet view article

representation developed by the computer vision, image processing and signal processing communities, in which a signal or an image is subject to repeated

Cascaded integrator–comb filter (1,609 words) [view diff] no match in snippet view article find links to article

In digital signal processing, a cascaded integrator–comb (CIC) is a computationally efficient class of low-pass finite impulse response (FIR) filter that

Transfer matrix (1,133 words) [view diff] no match in snippet view article find links to article

effect of T h {\displaystyle T_{h}} can be expressed in terms of the downsampling operator " ↓ {\displaystyle \downarrow } ": T h ⋅ x = ( h ∗ x ) ↓ 2.

Multirate filter bank and multidimensional directional filter banks (4,934 words) [view diff] no match in snippet view article find links to article

expansion) in the design implementation of the filter. Decimation or downsampling by a factor of M {\displaystyle M} essentially means keeping every M

Digital audio (2,810 words) [view diff] no match in snippet view article find links to article

through digital signal processing, where it may be filtered or have effects applied. Sample-rate conversion including upsampling and downsampling may be used

Gaussian filter (2,885 words) [view diff] no match in snippet view article find links to article

In electronics and signal processing, mainly in digital signal processing, a Gaussian filter is a filter whose impulse response is a Gaussian function

Filter (video) (176 words) [view diff] no match in snippet view article

decoding Common prefilters include: denoising resizing (upsampling, downsampling) contrast enhancement deinterlacing (used to convert interlaced video

Overlap–save method (1,511 words) [view diff] no match in snippet view article find links to article

(2006). "Turning Overlap–Save into a Multiband Mixing, Downsampling Filter Bank". IEEE Signal Processing Magazine. 23 (March 2006): 158–161. doi:10.1109/MSP

Fast wavelet transform (1,314 words) [view diff] no match in snippet view article find links to article

{\displaystyle n\in \mathbb {Z} } . In the Z-transform notation: The downsampling operator ( ↓ 2 ) {\displaystyle (\downarrow 2)} reduces an infinite sequence

Wavelet (7,062 words) [view diff] no match in snippet view article find links to article

Wavelets are imbued with specific properties that make them useful for signal processing. For example, a wavelet could be created to have a frequency of middle C

Image scaling (1,854 words) [view diff] no match in snippet view article find links to article

the view of the Nyquist sampling theorem. According to the theorem, downsampling to a smaller image from a higher-resolution original can only be carried

JPEG (13,561 words) [view diff] no match in snippet view article find links to article

(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

Index of electrical engineering articles (3,721 words) [view diff] no match in snippet view article find links to article

– Amplitude modulation – Analog circuit – Analog filter – Analog signal processing – Analog signal – Analog-to-digital converter – Annealing (metallurgy)

Delta-sigma modulation (6,863 words) [view diff] no match in snippet view article find links to article

coarsely-quantized output of a delta-sigma ADC is occasionally used directly in signal processing or as a representation for signal storage (e.g., Super Audio CD stores

Contourlet (1,915 words) [view diff] no match in snippet view article find links to article

directionality. The first major notable difference is that upsampling and downsampling are removed from both processes. Instead the filters in both the Laplacian

Anamorphic stretch transform (2,107 words) [view diff] no match in snippet view article find links to article

at a lower rate than what was previously possible with naïve uniform downsampling. This property, known as "feature-selective stretching", can be used

Frequency (2,296 words) [view diff] no match in snippet view article find links to article

type temporal rate. Audio frequency Bandwidth (signal processing) Chirp Cutoff frequency Downsampling Electronic filter Fourier analysis Frequency band

Bitcrusher (1,331 words) [view diff] no match in snippet view article find links to article

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

Oversampling and undersampling in data analysis (2,718 words) [view diff] no match in snippet view article find links to article

) {\displaystyle P(Y)} during training by applying undersampling or downsampling. This point can be illustrated with a simple example: Assume no predictive

Point Cloud Library (3,258 words) [view diff] no match in snippet view article find links to article

provides several useful filters for removing outliers and noise and also downsampling the data. Some of them use simple criteria to trim points, others use

Line drawing algorithm (1,602 words) [view diff] no match in snippet view article find links to article

applications of this method include linear interpolation or downsampling in signal processing. There are also parallels to the Euclidean algorithm, as well

Gaussian blur (2,373 words) [view diff] no match in snippet view article find links to article

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

Deep learning (18,116 words) [view diff] no match in snippet view article find links to article

for convolutional neural networks (CNNs) with convolutional layers and downsampling layers began with the Neocognitron introduced by Kunihiko Fukushima in

History of artificial neural networks (8,625 words) [view diff] no match in snippet view article find links to article

introduced the two basic types of layers in CNNs: convolutional layers, and downsampling layers. A convolutional layer contains units whose receptive fields cover

Glossary of electrical and electronics engineering (19,294 words) [view diff] no match in snippet view article find links to article

circuit that alters some frequency-related property of a signal. analog signal processing Generally, techniques used to alter signals that rely on voltages

JPEG 2000 (6,087 words) [view diff] no match in snippet view article find links to article

since the wavelet transformation already separates images into scales, downsampling is more effectively handled by dropping the finest wavelet scale. This

Neural network (machine learning) (17,613 words) [view diff] no match in snippet view article

for convolutional neural networks (CNNs) with convolutional layers and downsampling layers and weight replication began with the Neocognitron introduced