I'd like to explain the motivation.
It sounds like a neuroscience topic but I am after the strict Signal Processing POV.
(I don't come from a Signal Processing background).
Interested to learn whether it's a rookie question in Signal Processing or touches on a deeper paradox.
Motivation for Question A scientist, many years ago, told me that the most advanced data compression we have is in the optic nerve. That visual data is compressed there and then bought to our brain for more processing.
(I'm guessing visual data is defined as a 3D field that maps light, based on a variety of factors e.g. intensity, wavelength, Cartesian coordinates etc).
If my dog and my cat and I all look at my cup of coffee- presumably, we will all compress the visual data distinctly. For sure, we all use visual data very differently, which must mean we extract different meaning from it, ie. have different filters for what's relevant in the visual field (e.g. color, movement, sensitivity to small or large shapes).
I am interested to learn whether, in Signal Processing, compression and filtration are separate concepts or they are strictly equivalent?
Because the more I thought about it, the less I can understand the difference between compression and filtering.
It seems like compression involves filtering automatically. (i.e. compression is unconscious filtering, whereas filtering is conscious).