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Comment by ska

One of those annoying things is that the name "super resolution" stuck, here.

Originally super-resolution was a hardware technique, and not "guessing". If you can [edit: this was poorly worded "control an imager positioning"] control imaging with finer resolution than the sensor has, you can take multiple images and reconstruct a higher resolution image in a principled way for say 2x resolution gain (cf super-resolution microscopy), also some telescope systems. Some modern photographic systems actually do this directly (piezo motors?) on the sensor.

Of course this only works if what you are imaging is reasonably static over the time needed to take all the images.

You can do an approximate version of this with video, with caveats because you don't control the motion. The key thing is, though, you actually have more data to work with.

This idea ran in parallel with image processing people attempting to estimate higher resolution from a single image for a while, and unfortunately the terminology stuck in image processing also. Something like resolution extrapolation is probably better but that ship sailed ages ago.

parent ska 5 years ago

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