技術の進展による映像の明瞭化
Hello Asami.
So let's try and...
Oh my god.
I need to remember to publish the episodes in correct order so that this would make sense, but...
In case, look, in case this isn't in the proper order,
the listeners will just have to wait. Chat will just have to wait until they get to the other episode for this to make sense.
Stop, stop, stop complicating this.
We have something cool to talk about because both of us were not wholly aware of this.
I'm not sure, actually, if you want to take it from there.
This new sort of tech that we were semi-aware of.
Yeah, I mean, you shared a very interesting reel, as you often do,
and we keep that on a stockpile of topics.
So, yeah, why don't you explain to the listeners what this was about?
Sure, yeah. So, obviously, we begin our days with a nice scroll through one of the many soul-sucking apps.
Yeah, I get 20 notifications from Len every morning.
Mostly because those notifications came at like 3am and your phone was off until then, or probably.
Exactly. Yeah, I sleep with normal people and Len doesn't.
Yeah. Hey, don't call me out like that. It's true.
So, yeah, so, right, I try to use that sort of space at times to just be like, there's something neat.
I think maybe this is a inspiration, right, to maybe talk about because for the podcast,
we want interesting things to talk about that you, our listeners, can go ahead and look more up about, right?
Take a look into it. Maybe you find some new words, some new ideas, you know, a little bit for English practice,
a little bit for like, you know, thinking about new things.
So this one came up and it was talking about how, well, maybe video feeds, right?
If anybody watches sports, which many people might be doing or have done recently with the races going on.
Yeah, right now with the Sekai Rikujo, yeah, for sure.
And so in, let's say, bad weather, right? Precipitation weather, rain, snow, sleet, ice, right?
How are you able to get a clear picture, right? With these sort of television cameras, with the feeds that you're getting, right?
How are you able to see what's happening in front of you when all of this is supposedly splashing onto the camera?
Right, because I remember, I mean, not that I've paid attention to such detail as a kid, but, you know,
when you think about, let's say, like a hurricane or typhoon reporting, not too long ago,
you would have a camera that is like full of raindrops on the surface.
And you kind of vaguely can make the reporter through this, like, you know, droplets of water.
And every so often camera would like spin or like pan out to a different location.
And that's how you can like see better or sometimes and whatnot.
But like that was definitely a thing.
And you're saying that as of late, that's not really an issue or we have a way to overcome.
Yeah, apparently we have a way to overcome it.
And I don't know if, you know, say everyone uses it per se, but it was certainly interesting to learn that there is a way.
And it's not a pretty simple and effective way.
Yeah, it's not super complicated.
I mean, one option, right, is like, you could put a cover over the camera and try to stay away from the precipitation.
Right. Like, you know, obviously.
But the cover can often sort of either reduce the field of view.
Right. If you have sort of like an attachment around the lens, it can reduce the field of view, which might not be something you want to do.
Could affect the lighting.
Right. Could affect the lighting.
And also as a camera person, like the one carrying the camera, I'm sure it's very annoying to have to deal with like a parasol over when you're already dealing with like a 15 kilogram camera equipment.
スピニングガラスプレートの効果
Right. Yeah. You're starting to look a little bit too much like you need, you know, multiple hands to do this.
So, yeah. So instead, and we'll mention, I guess, at least where it came from based on that video in a second.
But it turns out...
We'll link the video, yeah.
Yeah, that you can just, at the front of the camera, you can just put a spinning glass plate.
And that's it, right? That's it.
I mean, obviously, to get a spinning glass plate, it takes some tricky engineering.
Right. So things don't just like break or something.
Right.
But a spinning glass plate is essentially all you need, because if you put a spinning glass plate there, if it's not moving, it will gather the snow and water just like anything else.
But the minute you spin it, the force is going to essentially cause things to slide off and out to the sides.
So you can see and you can see through if it's a clear plate without like, I imagine maybe there are some issues here.
Scratches.
Scratches. Right. But if it is a clear and undamaged plate, it looks just like a window.
Right. You're not getting dizzy. You're not watching the spinning.
Yeah. And I'm failing to remember what is like the frequency of vision signal for humans.
But if the spin happens faster than that, then our eyes are not going to be able to catch it.
Doesn't matter. Yeah. Yeah. Yeah. Good point.
So and it, at least in these videos, look pretty fast.
I don't remember what the speed is supposed to be now that I think about it.
Yeah, I forgot how many hertz or something, but it's it's pretty neat trick, I think.
Right. And it works so well and it just has to spin really fast.
Which again, challenging, but also relatively simple in terms of.
I mean, it's like as far as engineering goes, it's really not that hard.
You just need to attach a rotation motor to your spinny glass that fits the size of your lens.
And, you know. And just make sure that it's balanced enough that doesn't like, you know, spin.
Right. Yeah.
And I guess you would also give extra caution so that there's no like residue stuck on the on the lens or like on like a visible scratch on this cover glass,
because then you would just see like a ring, eternal ring on top of what you're seeing.
And then you're like, what is this ring?
Yeah, that would that would be bad. Right.
That would probably require the replacement. Right.
Any type of. Oh, I don't know. Is it easier to edit the ring out?
You know, if the ring doesn't move, like as long as the residue or the scratch doesn't move.
That's fair. In like an after.
You know, yeah. In a post-production, maybe it's easy to fairly easy to remove it.
But like when you show me the reel, I was like, that's I love this idea because it's so simple.
And we have been using like cameras in rain for so long.
And it seems like we only just recently or somewhat, you know, came up with the idea of like, hey, like we already have technology to do this simple solution.
The only thing you need to worry about is maybe like a battery if it's battery operated.
Right. So I actually just looked up, you know, quick Google found two of them.
These ones seem to run off 12 volt power supplies from the camera battery.
Oh, 700 milliamps running. Yeah.
And it where's the other. I also found the RPM rotations per minute.
They don't have it in. OK. You know, but it up to 3000 rotations per minute.
Pretty fast. Yeah. Sounds like. Yeah.
I think, you know, that's that's quite that's quite quick.
You know, what is that 10 over? I don't know. I don't do the other math.
I can imagine like this being applied to something like, you know, those like wildlife documentary where they sit for like days in one spot to try and catch like one moment of, I don't know, a wolf taking out their cubs to like for the first time.
回転レンズの技術
Yeah, this actually that's got to be so because I wonder if they use it for this.
The the other thing I noticed in one of these is that they give a noise specification.
And so for like that, I that sounds like a good place because you can keep the camera clear.
But if it's making a bunch of noise, it would probably keep things away. Right.
So like that, maybe there might be special kinds or maybe there's like a type of lens or a setup that they have to use, right, to try to reduce that.
This one here says it has a max of 40 decibels, which I always forget what the decibel ranges are for like loud.
I think our university where we did our PhDs, where the library floors were divided into decibels.
Do you remember like floors or like floors and some floors were like 10 decibel floors.
I forgot the distinction of like where it got more quiet.
I do know what you're talking about.
I never use the library.
Yeah, I just remember that it was color coded to the scale.
So what it was.
Oh, you didn't know that. Yeah. Yeah.
So it was it was 14 floors and it was color coded to the scale.
Yeah. Oh, that's the sciences library was.
Yeah, that was that was the running joke, I guess.
So I've also found a noise levels decibel chart, which is not technically color coded to the scale, but it almost had that.
It's very like rainbow green to red.
Yeah. 40 decibels is what this website actually, which they've sourced this image from WebMD calls average home noise.
Whereas 60 decibels would be like normal conversation and background music.
I think there's something weird with decibel in the way that things sort of scale.
But roughly that, let's say.
So the spinning, spinning disc is pretty quiet, like average home noise, maybe like not tons of conversation happening at every time.
Maybe it's quiet.
I don't know if it's quite enough for that kind of like wildlife photography, because I would imagine that it's definitely an unnatural noise.
Right. For for that kind of setting.
Right. Yeah.
Whatever that noise is, however small it may be.
But that's cool. That's cool.
I can imagine this being sort of like a great addition, even for research.
Right. There are lots of fieldwork researchers who have to work under terrible weather conditions and still need sort of good analyzable footage.
Whether it's a video or photographs.
And I think as long as the frame rate is matched with the spinning rate of this cover glass, it works should technically works just the same way.
So, yeah, it's pretty cool.
It's pretty cool for a relatively like just spin it up and like, you know, maybe you have to match the frames or something.
But like, it's not bad.
And I guess the connection piece there is that it wasn't just for like photography.
I think they also called back in this video, which I wish I could remember the creator's name, her name and account are missing me.
But we should definitely drop it in the.
Yeah.
Where where chat can check it out later.
But the.
The other piece, the historical origin is from the ships.
Right. So like ships out in the ocean or at sea.
Right. If it's if you have a spinning disc as part of the window, it's a clear port through the window that you can see out of versus the rest that might be coated in, you know, water spray and other things that.
I do remember her saying that and that it used to be like it's it's like not really a new technology.
People have been using it to clear their vision for a long time.
Right. Never put it on like a TV camera.
Yeah. Yeah.
And I I don't know how old that is.
Right. Like, I don't know. You probably could have gotten away with it with some sort of fancy, you know, manual like spinning system.
クリアビュー・スクリーンの歴史
But.
But I'd be curious to know if there's like, you know, it's got to be a history somewhere.
Was it a clear view screen?
Might be what it's called. Yeah.
Clear view screen is the ones that at least are used.
That's like a spinny part.
Yep. Yep. And these ones specifically are if you find it on Wikipedia, it shows it on boats and trams and like other locomotives that need to go through like tough weather systems, which were apparently patented.
This is from Wikipedia in 1917 by Samuel Augustine de Normanville and Leslie Harcourt-Kent.
That's amazing, actually.
Yeah. Like this is a really old tech.
Yeah.
There's got to be a yeah, maybe I'm thinking of like, you know, motors and their sort of like design when they had come in.
I'm like, I wonder if this was manual first, but they call it a standalone pillar mounted screen.
I've arrived at the patent.
I don't think I need I don't I don't think I need to go into this, but I am I am looking at the patent.
And it certainly looks interesting.
This is a schematic that would take me a little bit to figure out.
But does it look manual?
That's what I'm trying to.
They've just condensed like two of the like multiple sort of directional slices in one image.
So I'm like, which way is this facing?
What is the window here?
I am it's unclear to me whether this is manual or electronic.
Because I honestly can't figure out what's going where.
It looks very manual, but that's because I can't identify something that to me would scream motor.
Unless that's what's kind of tucked away in this little slightly revealed section.
And it's labeled, but I'm not going to go read the patent.
So.
All right.
Well, if you're truly interested, you can look it up.
Never mind.
It's a motor.
It's a motor.
But please, please go find it.
I used control F to find the number that they labeled in the figure.
And it mentions a motor casing.
So.
Okay.
Yeah.
Anyway, go look it up for yourself.
Don't believe us.
Don't believe me.
Just go find it.
Yeah.
I used Wikipedia and it was the clear.
What did I call it?
Clear view.
Clear view screen.
Clear view screen.
And the patent was called the visual weather screen from 1918.
夢と想像の世界
It looks like on this.
But.
Yeah.
Yeah.
All right.
Well, enjoy your dreams about spinning glass, everyone.
This is.
That could be potentially hypnotizing.
Maybe if you're struggling to fall asleep, this might be a thought for you.
Think about spinny, rainy glass.
Maybe that's calming for some people.
Don't touch it, though.
By all means, don't touch the glass while it's spinning.
That's it.
Never mind.
We don't have to go down that rabbit hole.
Right.
Like, if you just got this spinning glass thing, you got to make sure that people don't just touch it.
Right.
Like.
Yeah.
All right.
It's fine.
Good night, everyone.
Night.
That's it for the show today.
Thanks for listening.
And find us on X at Eigo de Science.
That is E I G O D E S C I E N C E.
See you next time.
