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50 points croes | 2 comments | | HN request time: 0.451s | source
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sxp ◴[] No.42196716[source]
https://arxiv.org/pdf/2404.06493 is the paper. If I'm understanding it correctly, the camera isn't actually capturing a pulse of light. Instead, it's recording single pixels from a 10MHz series of pulses using a single pixel camera that rotates around the object. Then uses this time-series of data to render a video of a "single" virtual pulse via a NeRF.

The "AI" in the title appears to be click bait since the paper doesn't mention AI, and a NeRF isn't really AI in the colloquial sense even though it uses a DNN.

replies(1): >>42197264 #
1. variadix ◴[] No.42197264[source]
If you have something periodic in time you can get high time resolution of what looks like a single event by taking multiple periodic captures with tiny phase offsets. It’s a neat capability
replies(1): >>42198842 #
2. dtgriscom ◴[] No.42198842[source]
Periodic strobe light.