Alley in Pisa, Italy

by Lars Kotthoff

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13

The process is complicated but this should give an intuition into what's going on. Imagine you have a regular camera, but with motors to move the sensor half a pixel in any direction. Instead of taking one image this camera takes four: one centred, one shifted half a pixel right, one shifted half a pixel down, and one shifted half a pixel right and half a ...


3

Consider that the sensor is not a perfect capture device. Each pixel will be recorded with some amount of error. For example, if the most accurate value of a pixel is N, the sensor will record a value that is in a range N-E to N+E for a given E. For a good sensor E is small, a bad sensor will have a larger E. Also note that on each exposure a given pixel ...


3

you can check out: http://almalence.com/doc/superresolution-comparison/ and the product: http://www.photoacute.com/


3

The pixel reduction from 41 to 8mp has the impact of improving the accuracy of colour capture and reducing the appearance of sensor noise since for each output pixel you've got a handful of pixels to calculate the best value. Obviously there's a tradeoff that you've got less spatial resolution and it comes down to what makes for the most pleasing image in ...


2

I think that the answer could be "yes, if well done". The best advantage I see is the possibility to have a digital antialiasing filter much more sharper than a physical one. Let me explain (geeky here (1)) in one dimension. If you want to sample something at, say, 100 points/mm, the Nyquist theorem says that for avoiding aliasing (typically shown as moire ...


1

The following is as I understand things. People should feel free to point out any misconceptions so that we are all edified, but hopefully will actually point out any they spot and not just mumble in their beer. (or beards or ...). Put simply and simplistsically, there is slightly different information in the different photos and various methods are used ...


1

This plugin for ImageJ will perform super-resolution processing but only for black-and-white images. I haven't used it myself though.



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