Questions tagged [preprocessing]
Preprocessing is a relative term that usually refers to simpler operations applied to improve the operation of a more complex algorithm.
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Should I consider rgb values of a pixel as one value?
I was reading this paper for a project work.
We train on 1.6 million 32*32 color images that have been preprocessed
by subtracting from each pixel its mean value over all images and then
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Why do envelope extraction before pitch detection?
I am referring to this report on pitch estimation.
The author does envelope extraction using Hilbert transform before applying AMDF.
What is the advantage of doing that?
Is speech a narrowband or ...
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voice recognition vs speech recognition MFCC
I have a basic understanding of the acoustic preprocessing involved in speech recognition: divide the speech into frames, find the mel frequency cepstral coefficients of each frame, construct a ...
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How to perform a Rubberband-Correction on spectroscopic data?
I basicaly understood how the Rubberband/Baseline-correction works.
The given spectrum is divided into (N) ranges.
The lowest points in every range are determined.
The initial baseline is built out ...
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What segmentation methods can be used for simple images?
As related to the project I am currently involved in, I have come to realize that one thing that might help is for me to 'segment' my image. To that end, I have shown a very simple example below.
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Preprocessing to improve Harris corner tracking between video frames?
In our unmanned aerial vehicle grayscale video image stabilization application, we're having difficulty finding the "good" Harris corners in frame N+1 selected from frame N. The source of the ...
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MP3 Decoding Discrepancy
Is it possible for two different decoders to output two different sample results for the same MP3? I'm decoding an mp3 on Matlab and it produces two columns (presumably one for each channel). When I ...
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Find the relation between two noisy periodic signals of equal length
[Thank you, @leftaroundabout for your helpful comments to my related question. I'm trying to ask a less confusing question here.]
$0\leq\phi\leq 2\pi$ is a parameter that theoretically describes a ...
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What are the proper pre-processing steps to perform Independent Component Analysis?
What are the proper steps for preprocessing my waveforms in order to perform an independent component analysis (ICA) later? I understand the how, though further explanation of that doesn't hurt, but I'...
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How should I pre-process a real valued signal in order to use Kay's estimator?
I have 100,000 samples of a signal $x[n]$ that was sampled at 20kHz. The data is vibration data from a rotating machine, and contains a significant spectral component related to the speed of the ...
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