4 ms·
Shadows used to peer around corners
- rzzzt 8y agoReminds me of this work, aiming to "reverse" the light path between a projector and a camera/photosensor: https://youtu.be/p5_tpq5ejFQ https://youtu.be/p5_tpq5ejFQ
- taneq 8y agoIt's not as fancy as image reconstruction but I realised years ago that I tend to look at the floor any time I'm approaching a blind corner in an office environment. It took a little longer to figure out I was subliminally looking for diffuse shadows that would indicate someone about to come round the corner.
- fh973 8y agoReminds me of multistatic and passive radar, which were the entry subjects to my Wikipedia deep dive today.
- yesenadam 8y ago"Please don't tease us! Some actual information would be nice." - sctb Links please, tell us what you learned - the most memorable points anyway, how is it similar, what's cool about it etc.
- swayvil 8y agoCan we get an image off any reflection, it's just a matter of decoding/filtering? Is that the news? Because I would love to take an image of earth off of, say, Pluto. Or something further.
- loktarogar 8y agoIt took me longer than i'd like to admit to read it as "shadows used" "to peer around corners" not "shadows" "used to" "peer around corners", as if shadows at one point in time peered around corners but have since dropped the habit
- masonic 8y agoShadows have always been, and continue to be, nosy jerks.
- tomjakubowski 8y agoMy brain did the same thing. I think I'll blame it on having recently studied the Spanish copretérito.
- imhelpingu 8y agoI clicked for old paintings where shadows are wrong.
- wyldfire 8y ago> The information has to be reconstructed computationally from a series of measurements, in a similar way to that used in the X-ray imaging method known as computed tomography. Of interest here may be the radon transform [1]. [1] https://en.wikipedia.org/wiki/Radon_transform https://en.wikipedia.org/wiki/Radon_transform