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Questions tagged [preprocessing]

Preprocessing is a relative term that usually refers to simpler operations applied to improve the operation of a more complex algorithm.

19 votes
1 answer
5k views

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'...
jonsca's user avatar
  • 1,994
10 votes
4 answers
7k views

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 ...
チーズパン's user avatar
7 votes
1 answer
1k views

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. ...
Spacey's user avatar
  • 9,847
1 vote
0 answers
176 views

How to detect offset that changes along time in a signal?

I have an issue that has to do with detrending a signal. First, it seems my signals behaves a little unusual (for me, I think). Some signals starts with a quite large offset, then it seems to ...
Sergio Cuadros Ibargüen's user avatar
0 votes
1 answer
285 views

Help with automated baseline removal

This is more of a conceptual question, so apologies in advance if this is not the correct forum for such questions. I am trying to find a repeatable and consistent method for removing the baseline of ...
Geodatsci's user avatar
0 votes
0 answers
1k views

Pre-Processing Wi-Fi Channel State Information (CSI) Data

I was successfully able to collect some CSI data using the existing tool(s) on GitHub (https://github.com/StevenMHernandez/ESP32-CSI-Tool). The CSI data is a pair of imaginary and real number which ...
RikeshMM's user avatar