Tags
A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
any form of signal processing for which the input is an image, such as a photograph or video frame.
2715 questions
a numerical computing environment and a fourth-generation programming language. Use this tag with care.. see excerpt.
2573 questions
a device or process that transforms a signal by selectively choosing specific frequencies and leaving others with appropriate gain or as it is.
2416 questions
an efficient algorithm to compute the discrete Fourier transform (DFT) and its inverse.
2413 questions
A discrete signal or discrete-time signal is a time series consisting of a sequence of quantities.
1921 questions
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a mathematical operation that decomposes a function into its constituent frequencies, known as a frequency spectrum.
1647 questions
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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the physical transfer of data (a digital bit stream) over a point-to-point or point-to-multipoint communication channel.
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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.
975 questions
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
the reduction of a continuous-domain signal to a discrete-domain signal.
850 questions
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
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.
761 questions
Computer vision includes methods of processing, analyzing, images and high-dimensional data to form high level understanding and recognition of the scene or images.
746 questions
the number of cycles (of the signal) per second.
594 questions
the distribution of signal power over frequencies.
589 questions
A continuous signal or a continuous-time signal is a varying quantity (a signal) whose domain, which is often time, is a continuum.
566 questions
an electronic filter that passes low-frequency signals but attenuates signals with frequencies higher than the cutoff frequency.
548 questions
a type of a signal processing filter whose impulse response is of finite duration.
522 questions
a wave-like oscillation with an amplitude that starts out at zero, increases, and then decreases back to zero.
513 questions
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
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
465 questions
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…
449 questions
a property of signal processing systems.
412 questions
The Z-transform converts a discrete time-domain signal, which is a sequence of real or complex numbers, into a complex frequency-domain representation.
401 questions
the cross-correlation of a signal with itself.
369 questions
a method expressed in a finite list of steps of well-defined instructions to process a signal.
368 questions
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a mathematical representation of relationship between input and output (signal) of a linear, time-invariant system.
357 questions
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.
356 questions
its output when presented with a brief input signal, called an impulse.
352 questions
a technique for approximating an unobserved signal from an observed signal containing noise.
341 questions