Talk:Oversampled binary image sensor

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Prior art! edit

Latest comment: 7 years ago1 comment1 person in discussion

I hope whoever came up with this idea hasn't tried to patent it, given that there's a huge library of prior art - to whit, it's essentially how digital X-ray and Gamma-camera scanners have worked for about the last 30 years. Generally at a much, much lower effective shutter speed (but also far lower incoming radiation intensity), but otherwise the exact same idea.

IE: Activate the sensor for a certain amount of time, collect samples either by making a regular, frequent check (e.g. 1/s) of the array to see which elements have collected a photon and resetting them, or keeping a constant one-at-a-time watch for incoming photons, registering their position and immediately resetting the array (which is certainly what g-cameras do, as they have to determine the incoming ray position to a rather higher resolution than the actual array density by calculating the relative pulse energy contributed by each of the large-faced photomultiplier tubes around the strongest one), shut the sensor off at the end of the exposure period, total up the counts for each array element, then optionally apply a normalizing transform (depending on whether you need maximum brightness even if it amplifies grain and hides changes in overall intensity between shots, or an accurate, high-dynamic-range representation of varying sample intensity).

It's an idea I toyed with whilst working such a machine for a couple years, but other than allowing post-capture experimentation with different balances of temporal sharpness vs dynamic range and bit-depth by a pro photog, couldn't really figure out how useful it would be with visible light material / what the market appeal would be, or really how to make it work properly with the more limited digital photography and data storage technology of the day...

(For that alone, I don't begrudge the developers any patents they seek on the necessary technological upgrades and breakthroughs they come up with in order to make it a reality ... just, yknow, the idea itself is very old news...) 193.63.174.254 (talk) 15:47, 16 March 2017 (UTC)Reply

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