Pixelation of bitmap images (pixel size, pixel density, resolution)

[sophiecentaur]

All common TV camera's create horizontal pixelation

I'd say it's more like Sampling. "Pixellation" only applies to 2D data and TV moves, so the temporal requirements are very relevant. If they wanted to just increase the resolution, they could slow the horizontal scan rate and use more lines - which would make movement even more jerky and flickery.
This is one of those topics that is very hard to keep on the rails of 'one point at a time'.

 

[.Scott]

The speed of a convoy is the speed of the slowest ship.

I'll open up Pandora's box a bit.
When analyzing the effects of image capture, transmission, storage, retrieval, processing, and viewing, heavy use is made of the spatial frequency domain. In essence, each spatial frequency is a separate "convoy" - unless you want to open the Box all the way.

This is all grist for a course in Digital Signal processing - which I suspect both of us have taken.