Questions tagged [background-subtraction]
The background-subtraction tag has no usage guidance.
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Removing the background of a postcard scan
I'm trying to build a tool to automatically create a "background mask" of a scan of a postcard, allowing pixel information not relating to the postcard itself (ie. the ceiling of the scanner)...
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How can a common trends be detected and filtered from multiple spectra data?
I'm looking at spectral data collected through Cavity ring-down spectroscopy. I'm comparing a few samples of similar analytes and expect slightly different peak heights and trends. However, there are ...
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Numerical Integration Drift
I have collected force platform data to which I calculate acceleration and velocity. The velocity data is presenting what I understand as drift from the numerical integration process that I undertook ...
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Foreground extraction with zebra background
I am trying to classifiy grayscale images but I need to focus on a specific object on each image.
I would like to segment the object but the targeted object has the same color than the background.
And ...
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How to Calculate Local Spatial Variance of an Image?
For those who work often on image processing, I'm facing an algorithm of Non-Uniformity Correction (NUC) that requires the calculation of a parameter called "Local Spatial Variance". I can't ...
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Continuum Fitting with Python using specutils
it's my first time processing spectra from a black body radiation experiment, I'm using Python and having some troubles...
I have this spectra with 2 peaks and uneven background noise which I want to ...
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Subtract background from 2D signal using spectral methods
I have a 2D signal, with intensity as a function of two angles (alpha and beta), as shown below.
This contains a background, which makes the signal's base-surface locally convex-concave. I would like ...
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Removing vocal but retaining all background ambient noises
I have one audio file containing human speeches, a lot of ambient noises like audience laughter, birds chirping, sounds of natures etc..
Now I want to separate it into two audio files where one ...
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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 ...
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Need help cleaning noise
I have been recording sound sample from mouse vocalisations and noticed that a background noise appeared in the recording room. the noise is clearly visible in the spectrograms of the recordings as ...
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Chroma key algorithm with unknown background color
Suppose that I have an image with a foreground subject and a monochrome background. The image is a real world picture so the pixels belonging to the background do not share the same exact value. I ...
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Why do we substract a background image and not divide it?
Subtracting a background image for background correction is the standard way of doing background correction to obtain the foreground.
I am wondering if there are situations, where it would make sense ...
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Real time background noise reduction or removal
I am trying to build a real time simple audio recognition that can recognize few keywords. Following this tensor flow tutorial i was able to train a simple neural network.
Currently the signal flow ...
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Producing masks from mostly-static-background subtraction when given the background
My data set contains a number of high resolution greyscale images containing a person's face. A single image containing the background without the face is provided. The background is mostly static in ...
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Subtracting audio signal emitted - trying to use spectral subtraction to localize moving objects
I am a Software Engineer without much signal processing background and currently spending and experimenting to get use to it.
My scenario: Assume a speaker and a microphone array. A speaker emits an ...
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