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Pastimes : Digital Photography
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To: Sun Tzu who wrote (20278)7/16/2018 12:00:19 PM
From: TimF  Read Replies (1) of 21623
 
Interesting. I've heard of this camera before.

It often gets presented as viewing the progress of a light beam, but technically your viewing the scattered light from the beam, whatever remains in the main beam never hits the camera.

I had wondered how they managed to have enough light to form an image with such short exposure times. The video explained that, they take many pictures and combine them.

As far as the practical uses for imaging around corners presented in the video I'm sort of skeptical. You need a massively expensive laser and camera system (the camera more than the laser), and you need to take many exposures to have enough brightness, then most of the data won't be from the reflected around the corner object but from more direct reflections, so you have to heavily process it (and perhaps take even more exposures to have enough raw data to do the processing on), all in close to real time for it to be useful for some of the things he talked about. As for the look at traffic around the corner idea, I don't think it will even be possible all that soon, and when it is possible it probably won't be affordable enough for mass use in my lifetime. Health imaging might be more possible since it wouldn't have to be real time and it could be used in a smaller number of expensive centers rather than trying to install it in hundreds of millions of cars, trucks and buses.
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