Signal Processing

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any form of signal processing for which the input is an image, such as a photograph or video frame.
2715 questions
8 asked this week, 18 this month
a numerical computing environment and a fourth-generation programming language. Use this tag with care.. see excerpt.
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5 asked this week, 16 this month
a device or process that transforms a signal by selectively choosing specific frequencies and leaving others with appropriate gain or as it is.
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9 asked this week, 30 this month
an efficient algorithm to compute the discrete Fourier transform (DFT) and its inverse.
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8 asked this week, 32 this month
A discrete signal or discrete-time signal is a time series consisting of a sequence of quantities.
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a mathematical operation that decomposes a function into its constituent frequencies, known as a frequency spectrum.
1647 questions
18 asked this month, 304 this year
Audio, or in terms of signal processing, an audio signal is an analog or digital representation of sound, typically as an electrical voltage.
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18 asked this month, 161 this year
the physical transfer of data (a digital bit stream) over a point-to-point or point-to-multipoint communication channel.
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13 asked this month, 319 this year
The frequency spectrum of a time-domain signal is a representation of that signal in the frequency domain.
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In signal processing noise can be considered random unwanted data without meaning.
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6 asked this month, 161 this year
the process of designing a filter.
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6 asked this month, 180 this year
a high-level interpreted general programming language. Python has popular numerical and scientific libraries/packages, most notably numpy and scipy. The scipy.signal package is a powerful …
854 questions
14 asked this month, 237 this year
the reduction of a continuous-domain signal to a discrete-domain signal.
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7 asked this month, 148 this year
a mapping between a finite set of discrete points in a (primal) domain (time, space) and the dual frequency domain. DFT requires an input sequence which is di…
808 questions
20 asked this month, 153 this year
a mathematical operation on two functions f and g, producing a third function that is typically viewed as a modified version of one of the original functions.
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11 asked this month, 153 this year
Computer vision includes methods of processing, analyzing, images and high-dimensional data to form high level understanding and recognition of the scene or images.
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the number of cycles (of the signal) per second.
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7 asked this month, 89 this year
the distribution of signal power over frequencies.
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A continuous signal or a continuous-time signal is a varying quantity (a signal) whose domain, which is often time, is a continuum.
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an electronic filter that passes low-frequency signals but attenuates signals with frequencies higher than the cutoff frequency.
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10 asked this month, 117 this year
a type of a signal processing filter whose impulse response is of finite duration.
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9 asked this month, 100 this year
a wave-like oscillation with an amplitude that starts out at zero, increases, and then decreases back to zero.
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A linear system operates on inputs with only linear operators so the response to a complex input can be analysed as the sum of the response to a set of simpler inputs. This mathematical property makes…
504 questions
8 asked this month, 91 this year
covers signal processing where input is an image, such as a photograph or video frame and the output could be an improved or altered image, parameters related to the image or information abou…
474 questions
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the process of varying one or more properties of a high-frequency periodic waveform, called the carrier signal, with the amplitude of low-frequence modulating signal which typically cont…
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6 asked this month, 76 this year
a property of signal processing systems.
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5 asked this month, 78 this year
The Z-transform converts a discrete time-domain signal, which is a sequence of real or complex numbers, into a complex frequency-domain representation.
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7 asked this month, 59 this year
the cross-correlation of a signal with itself.
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a method expressed in a finite list of steps of well-defined instructions to process a signal.
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a mathematical representation of relationship between input and output (signal) of a linear, time-invariant system.
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7 asked this month, 54 this year
the quantitative measure of the output spectrum of a system or device in response to a stimulus, and is used to characterize the dynamics of the system.
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6 asked this month, 65 this year
its output when presented with a brief input signal, called an impulse.
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5 asked this month, 66 this year
a technique for approximating an unobserved signal from an observed signal containing noise.
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11 asked this month, 58 this year
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