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How Does Night Vision Work?
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- Опубликовано: 16 июн 2016
- Night vision is important for the gamer, but real-life night vision is used by soldiers, hunters, security guards, and many others. How does it work?
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Bravo six, going dark
You have execute authority
@@anirudhnair8886 we get dirty and the world stays clean, that's the mission
I ordered my Marines to treat Farah's army as enemy's.
And ehh
Bravo six, moving into the rear garden
@@LukaVDS Keep your Muppets on a short string Colonel
"Don't trip headfirst into the toilet"
I feel like there's a story there...
Lol
Hehe lol
3:04 And speaking of thermal imaging... Crunchyroll!
Crunchyweeb
LOL find forums and download Bluray versions
I was actually about to close the tab at that point ...
Penny Lane Same lol
what?
Who thought when he said "speaking of..." it was going into an ad
Yup, I got out of fullscreen and was about to close the video.
speaking of stealing, audible.com
Yes!
Yep twice! lol
Point of order: Image intensifiers are generally near-IR sensitive. (a ~ 940 nanometer (a wavelength ~300 terahertz) IR LED is used for your TV remote and is also used for active illumination for image intensifiers. Thermal cameras have a number of different detection modes. The common one is bolometric detection: It measures the magnitude of the heat produced rather than the luminosity. (The difference in methods is like the difference between "seeing" an LED light (Intensification) and "feeling" an incandescent (Bolometry) light)
i'm gonna be so bold to say. the best pre-order for any game i ever had was modern warfare 2. because of the night vision goggles. when the power goes out from a storm, i pop those one and walk around the house
That's actually kinda cool
+noha gindy yea
Used military grade nigh vision monocles when i served in the norwegian army, and they work so awesome!
Had good vision for hundreds of meters in the midle of the night.
that's just awesome
you got image enhancing night vision goggles free with the preorder?
I wonder if a similar process to image intensification could be used for audio, like if you're in space and need to hear something, it would detect the collisions of small particles hitting the microphone and intensify those collisions so you can hear
@bruh But would they work in space though? 🤔
@@thepuncakian2024 there is no noise in space
It will also amplify all noise surrounding it. Good luck blowing your eardrums.
Since it's a vacuum there would be no medium for the sound to travel, you might be able to hear thrusters or RCS ports ejecting their gasses if a large mic was near it.
I just thermally enhanced a frozen pizza. It was delicious.
Please do one on color space (sRGB, Adobe RGB, etc) and how it differs from color depth. I work with color spaces every day and I can't totally get my mind around it other than "more color is better". I know you did one on just color space, but I'd love to see an expansion on this with color space.
Mess up @1:49. it's not a "Thermal Enhancer", you were referring to "Imagine Enhancement".
Yep that made me cringe a little too. I do like how they separated the different types. The detector is designed to pick up light from either a reflective object (visible, SWIR) or an emitting object (MWIR and LWIR). Planks law help guide you choose which bandpass (and detector response) of light you want for your application. For instance, objects at room temperature have peak emission power somewhere in the LWIR.
Yeah, noticed that too. What a shame. :(
" 'Imagine Enhancement?' "
speaking of night vision in gaming, in GTA V in one of the missions (spoilers, by the way, if anyone cares, i'll spoil one of trevor's missions and an easter egg, so don't read any further unless you want to)
in that mission where the o'neil brothers (or whatever they're called) are trying to get to trevor and franklin follows them, and then they drive off the road, you get to use a sniper rifle with an infra-red scope to find where they are so that you can kill them, in the first few seconds of using the gun you can find bigfoot's heat signature just standing there, and then it slowly fades away. freaked me out a little bit when i played for the first time, i have to admit. i just wasn't expecting it, that's all.
how can thermal imagers be affective for fire figthers, won't the sensor be overloaded by the heat of surrounding fire?
They're not about seeing through fire, but seeing through thick smoke.
I'm not positive but because the fire is so hot, the people would look black or blue on the camera...
maybe it could be used to locate rooms were the fire hasn't spread...
or tell if there is a fire behind a metal doorknob without touching it...
seems like there are many use scenarios, even if finding people is not viable
not as much as the full white picture you would get by enhancing flames
i see, thanks for the input all of you.
This will probably get lost in the comments but the editing is really well done in this video. Keep up the good work guys! :)
Thanks :)
Thanks :)
Thanks :)
Thanks :)
Thanks :)
The only downside to thermal imaging, is you have to constantly adjust your camera. I always thought you just pointed it, but then I ended up taking a thermography certification course for a job I was getting and found out it was way more complicated.
There are hundreds of things you need to compensate for. The photons generated by heat can reflect off of certain materials, and give you a false reading in a process that I haven't fully wrapped my head around. Look up the wikipedia page for "Emissivity" If you're that curious, it has a picture which can explain it much better.
Long story short, actually operating a thermal camera isn't as fun as it looks, because you constantly need to be messing with your camera's settings if you're on the move by any slight degree.
Edit:
And to top it off; no there isn't actually any thermal imaging for your phone yet. Any apps or addons so far have only be NEAR infrared. But not true infrared. Meaning it's little more than a novelty. You couldn't use it for very many practical applications.
I had a $60 sony camera from like 2004 that had active illumination.
who cares
ᅚ it's a comment, most people don't care but I commented because I felt like it
Me too :D and it actually worked some how
That's actually amazing. $60 for a camera especially from sony in 2004 that had a feature like that.
The good ol "Sony Nightshot" feature. If I remember correctly, it had a button thingy that pulled the IR filter out of the way and lit some IR LEDs. IR filter is there usually because the IR light that is nearly invisible to human eyes, triggers all 3 colors on a ccd sensor and really messes up the colors on the final image.
You missed out on one other method- buying a a7s ii and cranking the iso
I just wanted to know, as the electrons are released by the photocathode, we are assuming that it has to travel straight to form an enhanced image which looks like the original one.
So, if there is an electromagnetic field nearby, will that disrupt the image?
That's a very good question! I know this is really old, but I have a few image intensifier tubes im not using. Im gonna try this out and I'll report back.
@@aaronj08ar Kindly, report back!
There is a very high voltage applied between the photocathode and the MCP, and between the MCP and the phosphor screen. This accelerates the electrons which remain collimated the whole way through. In a lot of tubes there are also electrodes designed to focus this stream of electrons onto the screen or even invert the image entirely.
Techquickie on cameras, i'm thinking the difference between sensors (full frame, crop sensors etc) Possibly lighting? why you should choose softboxes over umbrellas and vice versa.
In the absence of available ambient light, Infrared illumination is used. It is naked to the human eye but is basically like using a normal light when viewed through the NOD.
2:50
Really...
Using thermal vision together with FIRE is a great idea.
I mean it's not like thermal vision uses HEAT signatures to locate things.
because everything would be red and the person they are looking for would stick out like a sore blue thumb..
It depends on what camera you are using but most will adjust if there is a lot of heat around, kinda like how regular cameras will adjust when between high light and low light
@@AndykonSkyblader exactly
@@AndykonSkyblader also if the building aint completely burnt thermals cant see through glass
You can adjust the temperature range that the device sees. So basically the person would appear on the coldest end, and the fire would appear on the hottest end. Imagine it the same way as if you were to see a person holding an ice cream cone. It's not like you wouldn't be able to see an ice cream cone. It would appear black against a bright background.
Cover what makes different motherboards different from each other.
The features
Kenrick Brown
No shit, I meant more specifically.
SkewTube Quality of built-in audio, UEFI BIOS, RGB lighting, fan control, motherboard fans, M.2, USB 3.1 support, USB Type C, WiFi, Ethernet, difference in ktime length and coverage of warranty, quality of material, design, size, purpose (consumer, gamer, or server), etc.
Kenrick Brown
That's more like it!
+Kenrick Brown where's the chipset?
How come I just got a notification for this 6 month old video?
NO IDEIA
Hunting animals with night vision is illegal pretty much everywhere.
Depends on the Animals. Hog hunting it is widely used.
thats acctualy not correct. it varies between states.
I'd rather a hunter who wants to go out at night use night vision than have them shooting blindly into the dark whenever they *think* there is prey there.
We do it here in Texas.
+DasBrotkuchen it varies between states but most states don't allow it for most game. There are notable exceptions.
Eyes from how to train your dragon😂😂
WOAH THE REAL KING SCIENCE
please cover mobile RAM - I had to explain to someone that mobile RAM is not the same as your everyday PC RAM.
yeah please
it is the same
Mikat Nice try :P
indeed
It's the same, just smaller.
I'm curious how does the quarantine work in an antivirus software, maybe that'd deserve a video.
3:06 I almost thought he was going to pull a Linus segue.
I want to know how toasters work.
Just a slot with two heating elements on either side that heat up when a current is put through them.
+Crefftwr Yeah, but I want to hear a note scientific explication spoken by Luke.
+Spocked Up Productions Dang it. I know there was something fishy about those things. it all makes sense now.
+DakotaDidYou the schools want you to think that electricity is really magic and that we get it from power plants. In reality your house has a conduit driven right into the worlds dragon vein that absorbs all of the mana needed to power your daily appliances. When a black out occurs it is not because of the weather or a car crash, but because the Earth's dragon vein is constantly moving and shifts occur sporadically and unpredictably, this is why we have so mane mages known as electricians at the ready for such an event. It is all just a conspiracy to make you spend money on worthless dead dinosaur bits when really the dragon vein has an infinite amount of power and will never run dry.
Crefftwr Plus Bush did 9/11.
He probably should have added that most cameras without a filter can see in the ir spectrum too, which is why your phone camera can see the led on a tv remote flashing. This is useful for security cameras since they can have a spotlight of ir leds which won't shine in people's faces, making them more stealthy and less annoying while also illuminating the camera's vision.
You guys should explain how full color night vision works, was hoping to see that covered here but I'm sure that it would take longer to explain and/or there isn't enough public information available to explain it (I know it's a rather new and militarized technology). Either way, the video was great!
I really miss that slushy machine, if only I connected the infra red camera to a windows computer rather than a mac.
Why didnt you guys show some apache guncam videos on thermal part ?
Splintercell blacklist seems to get this right.
You should at least have mentioned that every photo sensor can "see" IR. You can test this by switching on your cell phone's camera, poinitng it at the Business en of an IR TV remote and pressing any button.
so doom calling them "light amplification goggles" instead of just "night vision goggles." is more accurate.
You guys mixed up near infrared and far infrared. Far infrared, which is what thermal cameras see, never work with active illumination, because that would essentially mean radiating thermal energy. Not very practical, except maybe in a campfire situation and it would decrease the image definition instead of increasing it, as it wold be absorbed by most materials instead of reflected.
Near infrared is the part of the infrared spectrum that is close to the spectrum of visible light and that works with active illumination, usually with infrared LEDs like you also find in your remote controls, which is why many camcorders - especially those with an optional night vision mode - will actually see the light your remote is emitting.
Both don't really have much to do with one another, near infrared is behaves like visible light and is actually visible to all modern CCDs. Cameras have to actively filter out near infrared with optical filters, so it doesn't distort the light distribution in images, so security cameras are just regular webcams with the near infrared filter removed and often optional infrared leds.
great explanation. little late but it would be cool if thermal was somehow included in the title of the video
You should do a review on the ATN Smart Scopes
I wish there was like, a device that emitted light so that when you pointed as something you could see what it was in the dark.
In the military and for hunting you do not want to show your position or what you are looking at. Thermal vision even has advantages at daylight.
I know. I was sarcastically joking :p
Jumpman98 Irony is the word you need to use, look up the definition of sarcasm, it is widely misused. And I got the joke about the flashlight but you missed the point by thinking visible light would be the solution for the problem which it is not.
+Jumpman98 what comment did you delete?
you reminded me of that silent way to take a velcro....
1:13 what are these layers made of? Ho can you multiply electrons? Is it literally making matter or am I not understanding something? Is it that when electrons hit a layer they stop and more electrons are released from the layer? How can you have free electrons just roaming around?
watching that test tube video on this topic,
right before this
made it so easy to understand this video.
I miss luke being on camera
Could you guys make a video about gaming monitors.
How is thermal camera useful in trying to see stuff in a fire... won't that be red all over the place because of the burning temperature? So the fire itself won't be visible in the camera because they aren't really the stuff that's giving out IR?
You'd think a video about night vision would discuss the different classes of night vision.
Not the toilet again :(
Respect from Poland!
The question of most importance has yet to be validly answered and the question in question I put forth to you now: What's Gucci, Jamal?
3:12 I have a sony dvd camcorder that can do this
most phone cameras can see infrared light. like the light that comes out of a TV remote (try it). so if you have an ir lamp.
Speaking of security cameras, that reminds me of a question I thought of a whole ago. If security cameras are so important to catch robbers and the like, why are most of them so resolution?
*low resolution
I would assume primarily because of cost for both the cameras and the file storage. This should be less of an issue these days, but most surveillance systems in use are probably many years old, when high ress cameras and large hard drives were simply very expencive.
Imagine how much of human progress had to be made for this invention to exist
Love how this came out not that long ago ;)
If the IR emitter method faced IR camera... Wouldn't the emitter stand out like a sore thumb?
Yes.
If you wear a night vision glass, you would think everyone around you is a zombie
1:46 "Thermal enhancers" ? typo?
Great video!
May I use clips from this video to help explain night vision at my job? This would be internal educational use only.
Where's the amazon affiliate link?
A lot of places have bans on using night vision for hunting, unless it's for exceptions like invasive or pest species like feral hogs in Texas.
2:15 ... Your cables are getting warm... LOL... Take a look at that
And about the red light in the military, it doesn't excite the green receptors in your eye so night vision isn't impaired.
***** In photography red light doesn't destroy negative film either.
Why does the app asks permission for Location, Pics/Media/Files, Info on Wifi connection ???
1:12 hold on, who's the owner of that PIMP ride out there? haha :D
I believe it's Linus' In one of the PC build off or Scrapyard wars videos he put something painted in that magical beast to cure.
On their channel super fun they had 2 episodes where they painted it and he never changed it back. I just realized this is old
That is linuses car
I saw once that the US has a camera that can see persons behind a wall.. No word on that? I'm sure it is not any of the cases you presented.
Is it made with ir light and ir cam's
1:13 hilariously epic names and pronunciation thereof
I use the thermal camera on my CAT S60 for cooking
1:48 thermal enhancers
I am just here to reset the ad algorithm, I want funny night vision ads why not lol!
What about the use of of white phosphor filters?
Misnomer. The white effect isn't usually from a filter, but a different chemical used for the phosphor screen. You can however get filters that go over a green phosphor device to change the colour slightly, though you lose some performance with those.
how does the firemen look for people in a burning building... i mean arent the fires gonna be all red and orange in the thermal camera?
they look for the cooler objects
you should do an as fast as possible about value pc building
Cats: lol Stupid hooman they can't see us
Hooman: *Night vision goggle noises*
Cats: O_O
0:26 looks like certain areas need a little warming up..
Yet another top video!
What about cold things does this thermal something see it
Could you do a video on "Teraflops"?
3:05
It was very hard to stop my close-video-instinct I have that is triggered by the words "speaking of " in an LTT video.
You forgot that thermal cameras are also good if your are looking for ghosts. Paranormal teams use them quite a bit.
I know I shouldn't ask, but is there a back story here?
Love this channel.
Graphene CPUs as fas as possible. Or have they already done them?
just awesome... thnx man
so is it impossible to see when there is no light and no heat?
woah, luke really NCIX'd that end up big time.
Great video but you made the point that thermal imaging is able to see infrared. Technically both image intensification night vision and thermal imaging both detect infrared. The thermal imaging uses a sensor to detect radiation (upper portion of infrared) and night vision amplifies the ambient light (including the lower portion of infrared). Sorry I'm a dork.
night vision, similar, but very different than thermal vision, the wave lengths are similar, but one relies on the light produced by the objects themselves, the other relies on an external source of light in a wavelength that we cannot see bouncing off the objects
The firefighter example is unrealistic. The whole frame would be red cuz of the fire
Ye and because of that a person would appear blue 🙂 ever thought about that ?
It would indeed be harder and more unlikely to be picked of but it can be done
Hold on, let me take a thermie
✋🏻if you get this 😂
Been three years since I like this still don't get it tbh
1:46 I believe you meant to say "image enhancers" rather than "thermal enhancers".
0:20 but can it run Crysis?!
vistastructions You're not funny.
Wouldn't thermal imaging be useless in the firefighter situation because the surrounding area would be hotter than the temperature of the person, which would overwhelm the image displayed by the sensor?
No
Justin Passfield Alright, thanks for the explanation.
+MrShi Shi .
+MrShi Shi everything is red, person is blue
To actually explain, in normal situations where the human is the hottest object around (i.e. a dark forest, a cave, an alleyway, and so on.) the human shows up as the hottest object around. In a house fire, the human shows up as to coolest object around, due to our bodies being made up of mostly water, which takes longer to heat up. If you can't see a human because the human is the same temperature as the fire, the human is already dead.
you can even test people for brain injuries with thermograms. those are awesome
Ups, at 1:50 you said "thermal enhancers" when it was supposed to be "image enhancers". Sorry for nitpicking but my OCD was going brr
Could you do a techquickie about the differance between different brands of the same GPUs? Like what is the difference between an MSI, EVGA or ASUS 1070 etc.
In case he doesn't I can give you an example, it's very similar to cars, make and model affect performance. Amd and nvidia are the two bases like uh, electric and gas, not exactly the same but the thought is there.
@@mahrko9455 Haha, 6+ years later reply, thank you!
@@Dupl3xxx oh my gosh i didnt even see that this was 6 years ago lmAO XD have a good one fam
@@mahrko9455 💙
Can you guys make a video on mounting drives and mount points in Linux. I'm currently trying to install Arch Linux for the first time and I don't want to just follow commands from a guide without understanding what some of the commands are actually doing. I've been on some websites explaining what mount points are but I still don't fully understand the whole concept.
figure it the fuck out, good day
Yes, saying that is definitely going to help someone learn.
+Phoenix2079x it is not his fault you are having
a bad day.
LTT is officially Luke Tech Tips
Downside to thermal cameras: You cannot see through glass.
This video can be very misleading. Heat does not just cause objects to emit light in the Infrared spectrum, but rather it causes objects to emit light across the ENTIRE electromagnetic spectrum, with the hotter the object, the higher up in the spectrum it will also emit light in. This is why when you heat things up to about 600 degrees Celsius they start to glow red. Doesn't matter what material.
you should make a video of types of keyboards and its different layouts!!!!!!!!!!