Questions tagged [real-analysis]
The real-analysis tag has no usage guidance.
3
questions
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27 views
Mirrored spectrum after computing derivatives of 2D function in Fourier domain
I use FFTW library to compute gradients and divergences of my function by the relation
$\nabla_\vec x = i \vec k $. I use the transformation functions for the real signal to save the memory and indeed ...
0
votes
2answers
474 views
Signals in real world?especially natural signals?
Do all the signals in real world ,that are of interest in engineering(for measurements or processing)are only continous/analog or there any other alternatives also?
For example birds make voice,...
3
votes
2answers
306 views
Understanding the Probability Distribution of Intensity Values
From "Digital Image Processing 4th ed. - Gonzalez, Woods"
Let $p_r(r)$ and $p_s(s)$ denote the PDFs of intensity values $r$ and $s$ in two different images. A fundamental result from probability ...
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