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The whole point of this technique is that you have that sharp frequency band and a crystal / filter that splits like band out. You're basically proposing somet
by wokwokwok 3y ago
The whole point of this technique is that you have that sharp frequency band and a crystal / filter that splits like band out.
You're basically proposing something completely different here.
So... while I agree you could do something as you describe, and I'd be interested to see the results of it, I'm not sure what the results would be like.
> The advantages I stated were
>> It would allow using full spectrum lighting, and would be easier to selectively filter.
All I can say is the CC results in that video were pretty great, despite the obvious caveats, compared to green-screen.
If you (or anyone) can build on it to do better, people will be interested in it; but there's obviously a difference between us idly speculating on how/if it might work, and this, where they've actually done it and shown that it does work.
> "they do, it's just uncommon and you haven't heard about it"
I've never heard of it being done.
If anyone has, please post a link or something.
- modeless 3y agoNo, the point of the technique is you have a frequency band that you can isolate and use in the background and not in the foreground. Using IR instead of visible as your isolated band makes the isolation easier and cheaper with fewer artifacts and limitations. It's still a very similar process otherwise. Yes, Corridor's results were great. Fewer limitations would make the process even better!
- ctrw 3y agoNear ir LEDs are also cheap and easy to power, with its what's in remote controls. Low pressure sodium lights aren't. I remember using them in postgrad labs and it wasn't fun. Alternatively you could use a solid state laser or narrow band LEDs if you need the band to isolate to be in the visible spectrum too.