71–80 of 114 posts
I’ve been doing something similar using “cheap” Chinese band notch filters. Had no idea about this Disney process. Also using this for AI training purposes. It’s amazing what you can buy on Alibaba, fully custom frequencies.
Cool! Training for what? You can't just drop a juicy comment like this and then leave us hanging ;-)
Very very cool, mindblowing actually, seems legitimately useful. There have been a few art installations over the years that use these lights: https://www.youtube.com/watch?v=hd077pa-5CI For a second I thought that the video was from this channel, which also does experimental cinematography stuff: https://www.youtube.com/watch?v=-4uzyhbDFas
After seeing the Olafur Eliasson retrospective at the Tate Modern a few years ago I tracked down the components to build my own low pressure sodium vapour light. It's so weird, as those people say, so see things coloured... yet monochrome.
tl,dr: Narrow-band lighting and optical filtering.
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Does the magic color need to be within the frequency range that the camera and video format can record?
You want the 2 cameras you are recording with to be near identical. If the lens is different (for example) then the mask might be distorted and would not line up with the colored image. Building 2 nigh identical cameras, but one with a sensor outside of the frequency range of the other, is probably a very expensive custom job.
Earlier quoted context omitted.
After seeing the Olafur Eliasson retrospective at the Tate Modern a few years ago I tracked down the components to build my own low pressure sodium vapour light. It's so weird, as those people say, so see things coloured... yet monochrome.
I rather miss them in the streets. It's only been, what, ten years or so since they've been replacing most of them with white LEDs round my way, but it's almost hard to remember that everything was yellow whenever you went out in the dark! Especially amazing atmosphere when it snowed...
At least by the time they got round to doing my street they used a lower temperature white than the ultra-harsh 'prison yard white' colour used in the earlier installations.
Very very cool, mindblowing actually, seems legitimately useful. There have been a few art installations over the years that use these lights: https://www.youtube.com/watch?v=hd077pa-5CI For a second I thought that the video was from this channel, which also does experimental cinematography stuff: https://www.youtube.com/watch?v=-4uzyhbDFas
Yes, extremely impressive. "Mary Poppins" rightfully received an Oscar for best visual effects. I am continuously amazed at the level of innovation done at the Disney studios back when Walt Disney was still alive. Rewatching Snow White with my daughter a few months ago, I was flabbergasted by the animation quality, even when compared to animation movies made decades later. Just look at these water scenes: https://you…
I saw this video come up on my Youtube multiple times, but never wanted to watch it because of the clickbait title and thumbnail. But I see the title on Hacker News and was right away interested so clicked on it. I wish the title could be straightforward on Youtube.
Same guy that made sponsorblock; crowdsourced titles and thumbnails. Tends to have good coverage on anything reasonably popular. Also has features to reduce the clickbaitiness of videos that haven't had someone submit better titles/thumbnails.
I saw this video come up on my Youtube multiple times, but never wanted to watch it because of the clickbait title and thumbnail. But I see the title on Hacker News and was right away interested so clicked on it. I wish the title could be straightforward on Youtube.
Check out this extension: https://dearrow.ajay.app/ Same guy that made sponsorblock; crowdsourced titles and thumbnails. Tends to have good coverage on anything reasonably popular. Also has features to reduce the clickbaitiness of videos that haven't had someone submit better titles/thumbnails.
Earlier quoted context omitted.
Presumably, the exotic part of the beamsplitter is that the dichroic filter must be a bandpass filter with a very narrow passband around 596nm. Yours is a high-pass filter, which wouldn't work for this application.
So, a second beamsplitter with low-pass filter wouldn't cut it?