Beta
×

Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!

Augmented HDR Vision For Welders (And Others)

Unknown Lamer posted more than 2 years ago | from the reverse-engineered-predator-tech dept.

Graphics 38

jehan60188 writes about a research project (involving Steve Mann) that combines a welding helmet and realtime HDR image processing to give welders a clear view of what they're working on. From the article: "In this demonstration, we present a specialized version of HDR imaging (use of multiple differently exposed input images for each extended-range output image), adapted for use in electric arc welding, which also shows promise as a general-purpose seeing aid. TIG welding, in particular, presents an extremely high dynamic range scene (higher than most other welding processes). Since TIG welding requires keen eyesight and exact hand-to-eye coordination (i.e. more skill and more visual acuity than most other welding processes), being able to see in such extreme dynamic range is beneficial to welders and welding inspectors. ... We present HDRchitecture as either a fixed camera system (e.g. for use on a tripod), or as a stereo EyeTap cybernetic welding helmet that records and streams live video from a welding booth to students or observers, nearby or remote. By capturing over a dynamic range of more than a million to one, we can see details that cannot be seen by the human eye or any currently existing commercially available cameras. We also present a highly parallelizable and computationally efficient HDR reconstruction and tonemapping algorithm for extreme dynamic range scene. In comparison to most of the existing HDR work, our system can run in real-time, and requires no user intervention such as parameters fine tuning. ... Our algorithm runs at an interactive frame rate (30 fps) and also enables stereoscopic vision. Additionally, a hardware implementation, which uses FPGAs, will be presented. The initial hardware configuration comprises an Atlys circuitboard manufactured by Digilent Inc., which is small enough to fit inside a large shirt pocket. The circuit board includes two HDMI camera inputs, one being used for the left eye, and the other for the right eye, as well as HDMI outputs fed back to the left and right eyes, after processing of the video signals. The circuit board facilitates processing by way of a Xilinx Spartan 6, model LX45 FPGA." The demonstration video is pretty cool, and you can read about the FPGA and details of the HDR algorithm in the research paper.

Sorry! There are no comments related to the filter you selected.

OK (0)

Anonymous Coward | more than 2 years ago | (#41313173)

When can I buy one? This would make my welding so much easier

Re:OK (2)

TheLink (130905) | more than 2 years ago | (#41313353)

When can I buy one? This would make my welding so much easier

Before you buy one I recommend you find out what the minimum, maximum and typical latency is.

High latency would make welding harder not easier. Plus give some people motion sickness...

Re:OK (2)

cayenne8 (626475) | more than 2 years ago | (#41314291)

I'm looking to get into HDR photography...and maybe even later videography.

I've recently picked up a Canon 5D3....and I'm currently playing with that and an open source HDR application Luminance [sourceforge.net] .

Pretty cool stuff.....but just get a camera that will bracket exposure shots for you, and then put them together with something like Luminance, GIMP, Photoshop....etc.

I'm just starting to play with stills for now, but looking to see how to do it with video later....this isn't just for arc welding.

WHAT IS HDR? (-1)

Anonymous Coward | more than 2 years ago | (#41314493)

You IDIOT editors. Could you MAYBE define HDR before you start randomly spewing it in an article summary? HDR is NOT a common acronym. And don't give me that retarded banter about how I should understand your alphabet soup or how English is a growing language or to look it up on Wikipedia. Douches.

Capcha: cactus

Video didn't stream well, download it (3, Informative)

j-stroy (640921) | more than 2 years ago | (#41313199)

It is an .MP4

- you are now breathing deliberately -

Re:Video didn't stream well, download it (1)

AwaxSlashdot (600672) | more than 2 years ago | (#41313241)

Yeah, downloading a 80MB file linked directly from slashdot will go smoothly.

Re:Video didn't stream well, download it (2)

NoNonAlphaCharsHere (2201864) | more than 2 years ago | (#41313713)

Well, at least they'll have a good way to visualize the smoldering wreckage of their server.

Re:Video didn't stream well, download it (1)

Anonymous Coward | more than 2 years ago | (#41313989)

"- you are now breathing deliberately -"

Thanks, Ass.

Allow Me to be the First to Say: (3, Insightful)

CanHasDIY (1672858) | more than 2 years ago | (#41313223)

That is one bad-ass looking welding helmet!

Being able to see what you're welding on is just a pleasant side effect.

Re:Allow Me to be the First to Say: (1)

X0563511 (793323) | more than 2 years ago | (#41313933)

It doesn't just let you see what you're doing either. Watch the video yet?

Holy shit!

Re:Allow Me to be the First to Say: (1)

X0563511 (793323) | more than 2 years ago | (#41314155)

Re:Allow Me to be the First to Say: (3, Insightful)

CubicleZombie (2590497) | more than 2 years ago | (#41314967)

Over engineered, if you ask me. I just recently upgraded to an auto-darkening welding helmet and it is wonderful! My weld quality increased ten fold, and I can actually strike the arc where I want to, instead of pretty much at random.

I would recommend that anyone shopping for one spend a little extra and get the adjustable tint model. My $50 hobbyist grade model isn't quite dark enough and I end up wearing sunglasses underneath for extra comfort. The $100 models go darker.

Either way, it's a whole world of difference compared to using basically the same helmet my grandfather used building WWII battleships.

TIG is not harder then most welding processes (1, Informative)

Anonymous Coward | more than 2 years ago | (#41313293)

Since TIG welding requires keen eyesight and exact hand-to-eye coordination (i.e. more skill and more visual acuity than most other welding processes),

As a professional welder, I can tell you that TIG welding does not require the most skill. Traditional stick/rod welding requires much more skill and visual acuity. Stick welding feels like you are working in a strobe light with different light levels and sparks distracting you constantly. Stick welding is harder because the rod is constantly getting shorter and yet you need to maintain a constant distance from your work. TIG welding in many respects is much easier.

Re:TIG is not harder then most welding processes (1)

h4rr4r (612664) | more than 2 years ago | (#41313431)

While not a professional welder, only amateur, I would want to suggest that working conditions and material can impact that general rule.

Some stuff sucks to weld, no matter the technology used.

Re:TIG is not harder then most welding processes (2)

Windwraith (932426) | more than 2 years ago | (#41314395)

From experience, I agree with this.
I've used those "auto-shielding" "solar" masks, and they are quite an improvement since you can "aim" safely, but being able to see precisely what you are doing as you do the actual welding makes me fantasize working with this new hardware.

Re:TIG is not harder then most welding processes (0)

Anonymous Coward | more than 2 years ago | (#41314691)

Part of it, I think, is that TIG is the preferred method for most aluminum work, and aluminum requires some skills because (as I'm sure you know) it has horrifically high thermal conductivity, making it hard to keep a puddle without blowing through.

Nobody in his right mind stick welds aluminum, too much pain, so people conflate aluminum and TIG.

Re:TIG is not harder then most welding processes (1)

Anonymous Coward | more than 2 years ago | (#41315037)

Learning TIG welding is a lot like learning to ride a motorcycle. There are more parts of your body involved, and they must all be doing different things simultaneously to make sure you get a good weld. You have your throttle (foot pedal), your clutch, (weak hand, filler rod), and your steering (torch distance from workpiece, moving the arc back and forth, and along the work) and you have to balance all of these things all at once to avoid crashing (touching the tungsten into your molten pool of metal), and to produce a great weld, on thin and exotic materials, (and at weird angles, cramped positions, upside down, etc) it can require the attention, concentration and experience you're likely to find in a top-level motorcycle racer.

So, as someone who has also been a professional welder, I must disagree. In a number of respects, SMAW (shielded metal arc welding, or stick) is much, much easier, especially for someone who is not a welder by trade. You can give just about any farm hand some old welding machine with some rod and safety gear and have them make a usable weld on some piece of equipment (not going to be perfect, or certifiable, but it'll hold...maybe) and with minimal training. I guarantee it won't work the same for TIG.

Re:TIG is not harder then most welding processes (1)

tom17 (659054) | more than 2 years ago | (#41317579)

Give me another couple of months (Saving up for my bottle of Argon) and I can test that theory out. I have never laid a weld in my life and once I have that gas bottle, I will be trying my hand at self-taught TIG welding :)

I'm quietly confident that I will pick it up quickly.

I have zero interest in stick welding either.

Not HDR, but .... (4, Funny)

PPH (736903) | more than 2 years ago | (#41313327)

.... we could use an augmented vision system for our local Cadillac drivers. It would enable them to virtually see through their steering wheel, dashboard and engine compartment to view the road in front of them.

Re:Not HDR, but .... (1)

bev_tech_rob (313485) | more than 2 years ago | (#41313499)

.... we could use an augmented vision system for our local Cadillac drivers. It would enable them to virtually see through their steering wheel, dashboard and engine compartment to view the road in front of them.

You must live in Florida....

Re:Not HDR, but .... (1)

PPH (736903) | more than 2 years ago | (#41314697)

You must live in Florida....

Near Bellevue, Washington. Its where all the Eastern Washington farmers go when they sell their land, take their cash and retire. Everyone seems to corner like they are hauling a trailer load of irrigation pipe behind a tractor as well. :-/

Humm... (0)

Anonymous Coward | more than 2 years ago | (#41313351)

" we can see details that cannot be seen by the human eye"

Re:Humm... (0)

Anonymous Coward | more than 2 years ago | (#41313813)

" we can see details that cannot be seen by the human eye"

They're engineering majors, not English majors.

Re:Humm... (0)

Anonymous Coward | more than 2 years ago | (#41327429)

They need to stick with engineering, because they obviously have no idea what they are doing when TIG welding. OMG awful welds, technique, etc.

As a welder (2)

Charliemopps (1157495) | more than 2 years ago | (#41314447)

As a welder I can say: Holy cats! I want that... Talk about making my life easier!

Re:As a welder (0)

Anonymous Coward | more than 2 years ago | (#41315019)

As someone who is NOT a welder, but owns a couple of them and tends to make quite a mess when I (try to) use them, I can say: Holy cats! I want that... Talk about being able to actually make something useful for a change!

Re:As a welder (1)

Animats (122034) | more than 2 years ago | (#41315173)

Agreed. I took a TIG welding class once, using a standard mask. It didn't go well. I may try again with an auto-darkening mask, so I can see what I'm doing at the start. (Modern welding masks have light detection and glass that is darkened electrically, so you can see what you're doing with the arc both on and off.)

Re:As a welder (1)

sumdumass (711423) | more than 2 years ago | (#41319753)

Auto darkening helmets make about any kind of electrical welding easier to get going. I suggest getting one even if you are going to watch someone else weld. They are relatively cheap now (the same helmet/a comparable one I spend almost $200 on 10 years ago costs about $50 out the door now)

  Most of them have a dial that allows you to adjust the darkness a bit along with the delay and so on, so they are useful for different types of welding too. Just make sure that if you get one, that you can get the clear plastic lenses that fit in as a protection for the actual glass that takes the scratches instead of the costly part of the helmet. A neighbor got one online somewhere and couldn't find a source for the replacement lenses for 2 years. They get dulled up and scratched to the point you can barley see through them but don't dare weld without because the same thing will happen to the welding glass that darkens without it.

Re:As a welder (1)

Charliemopps (1157495) | more than 2 years ago | (#41319785)

I have both kinds of masks. To use the old, non-automatic, you simply have the helmet up, position your gun, don't move... flip the helmet down, and start. If you get a bright shoplight and shine it on your work, you can see it ...sorta... through the glass before you start. At least well enough to get your position. The auto dark helmets can be had for as low as $50 now http://www.harborfreight.com/adjustable-shade-auto-darkening-welding-helmet-46092.html

I've even seen that one on sale for $40. It's the same one I have, and it's served be for about 5 years now.

Forgive the interruption. (0)

Anonymous Coward | more than 2 years ago | (#41314529)

My vision is augmented.

This is the way to do it! (0)

Anonymous Coward | more than 2 years ago | (#41315099)

Applying newer technology into an age old trade to really boost the performance by improving the toolset.
This is the type of innovation that matters. Not the transition from iphone 4 to 5.

Image Fusion (2)

Malluck (413074) | more than 2 years ago | (#41315547)

I really like seeing applications for image fusion like this. I think we'll see more of them in the future given how cheap HD cameras and FPGA are becoming. There's no reason why I couldn't take an array of cameras with different filters and fuse the outputs together into a single image. It's better than the Preditor-Alien vision (no cycling required)!

Take these guys for instance. They're fusing thermal and visible cameras outputs together in realtime.
http://imagizellc.com/html/applications/fusion.html

How long do you think it will be before all of done on a single sensor die?

Re:Image Fusion (0)

Anonymous Coward | more than 2 years ago | (#41321167)

> How long do you think it will be before all of done on a single sensor die?

Just a little short of implanting that sensor in a human head...

Dump the 3D; Put it on the market... (-1)

Anonymous Coward | more than 2 years ago | (#41315625)

I don't need no stereo cameras 3D bull. That ridiculous depth perception myth needs to stop. Two eyes evolved to cover a wider angle; It does little to nothing for range and depth estimates and the millions with lazy eyes can attest to this.
Like you can actually estimate any range with the slightest accuracy with two focal points 10cm apart and the shitty hardware "God" gave us...
Come on! You take a shot with the one eye through the scope! Stop messing with that nonsense and put that beast in production already. I want it !!!

TIG the most difficult? That's debatable (2)

triffid_98 (899609) | more than 2 years ago | (#41316743)

TIG is certainly a lot more difficult than SMAW, (stick or MIG), but I'd consider OA the most difficult, depending on what you're doing with it. TIG welds, OA does all kinds of crazy stuff.

flame shrinking, flame bending, heating, brazing, hard facing, soldering, cutting, etc...AND welding

That said, hardly anyone (professionally) uses OA for much besides cutting and brazing and you generally don't need a strong shade to do it so visibility is already pretty good.

Re:TIG the most difficult? That's debatable (1)

sumdumass (711423) | more than 2 years ago | (#41319827)

I think this might be a misnomer. Tig is more difficult than SMAW because you have more controls to muck about with, but it's kind of like driving a bicycle or a car. Once you get the hang of it, it's pretty damn simple (note, I'm not a professions welder and have no clue if my welds would pass any certifications but few of them fail to hold when I need them to).

I agree on the oxy acetylene completely though.

I Like This... (4, Interesting)

IonOtter (629215) | more than 2 years ago | (#41317753)

I took a welding class in college as an elective for my degree, and it was an excellent idea. I've used it a few times, and it served me quite well.

That said, this is awesome! I haven't had the pleasure of using an auto-darkening helmet yet, but I can already see the appeal of this device.

With an ADH, you go from normal vision to "dark vision". You can see the material, the rod and the weld, but nothing else around you. You are effectively oblivious to anything else around you, such as your sparks setting something nearby on fire, or someone coming up behind you. This means you have to stop periodically and check your surroundings.

With this helmet, you have all of that, plus "normal" vision, and can now see everything around you. You'll have greater awareness of your work, and more importantly, you'll be able to see when someone-or something-is coming up behind you. In the construction business, this is a very necessary thing.

Check for New Comments
Slashdot Login

Need an Account?

Forgot your password?