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You missed the part where they proved that this is not required.
by iLoch 12y ago
You missed the part where they proved that this is not required.
- guelo 12y agoWhen Hollywood isn't still using 24fps film cameras they're certainly not using consumer-grade camera sensors.
- panzi 12y agoSo maybe the only option would be The Hobbit?
- anigbrowl 12y agoI know a couple of Hollywood movies that were shot on consumer gear, eg http://www.usa.canon.com/app/html/HDV/XHA1/case_study_06.shtml http://www.usa.canon.com/app/html/HDV/XHA1/case_study_06.sht... For this particular film the rather characteristic look of digital video is appropriate, whereas most productions would rather shoot with much fancier gear. But you'll find plenty DSLRs working on film sets these days, and you will see more and more convergence as high-quality sensors become a commodity. Black Magic have a pocket camera that delivers 13 stops of dynamic range.
- tomlu 12y agoIt definitely has to be 2x the desired maximum frequency if you don't want aliasing. They probably capture higher frequencies by making assumptions about the input signal, but this will inevitably lead to aliasing when these assumptions are violated. The article doesn't really go into depth about precisely how they go about this.
- cbr 12y agoThey have lots of pixels, though, which means you should be able to go higher than nyquist with some clever work. With two time samples you shouldn't be able to learn anything about the state of waves in a pool, but if each sample is a photograph with lots of pixels you can actually tell a lot.
- dandelany 12y agoHigh-speed camera or rolling shutter is required, (most) movies use neither.
- radarsat1 12y agoYou missed the part where 60 frames per second only allowed to identify the speaker and the number of people in the room. > Because of a quirk in the design of most cameras’ sensors, the researchers were able to infer information about high-frequency vibrations even from video recorded at a standard 60 frames per second. While this audio reconstruction wasn’t as faithful as it was with the high-speed camera, it may still be good enough to identify the gender of a speaker in a room; the number of speakers; and even, given accurate enough information about the acoustic properties of speakers’ voices, their identities.