Webcam Based Laser Tracking for Human-Computer Interaction

re: Webcam Based Laser Tracking for Human-Computer Interaction

Gwyn — Sat, 12 Apr 2008 04:14:26 GMT

Maybe a good method might be to perform both brightness tracking and colour detection. You would first go through the pixels and find the one(s) that were brighter than the threshhold. Then filter out the one(s) that matched the appropriate laser colour.

Bit Rate Throttling is pick of the week on Channel 9

Vishal Sood — Tue, 22 Apr 2008 23:38:47 GMT

Bit Rate Throttling was Brian's pick of the week on channel 9. We love you Brian :) Here is the link

re: Webcam Based Laser Tracking for Human-Computer Interaction

Schoolkid — Sun, 25 May 2008 15:56:58 GMT

this is the first thing im trying from this website (or other websites, im new to programming) could you tell me how to find the first code you see?

re: Webcam Based Laser Tracking for Human-Computer Interaction

Coding4Fun — Tue, 03 Jun 2008 02:42:39 GMT

@Schoolkid, download link is at the top of the page.

Re: What would you like to see in Windows XP SP3

Channel 9 — Wed, 04 Jun 2008 06:56:41 GMT

eek on Channel 9, Dan and Brian cover:

re: Webcam Based Laser Tracking for Human-Computer Interaction

Jerome Demers — Fri, 27 Jun 2008 00:21:59 GMT

Hey Ashish!

In your Laser Tracking Camera post I commented that the program crash asfter 5 minutes. Not this one!

It has been 22 minutes now and still going strong!

I thought it was Visual Studio 2008 automatic conversion that made this problem... but no

Thanks!

I will try the color tracking and change the line of code

if ((red > 220) && (green < 170) && (blue < 170))

Can't wait to try it out!

Thanks again!

Jerome

re: Webcam Based Laser Tracking for Human-Computer Interaction

Dom — Sat, 12 Jul 2008 11:57:48 GMT

Do you have an execuatable for download? I don't have visual C++ and cannot download it (I'm on dialup)

re: Webcam Based Laser Tracking for Human-Computer Interaction

Coding4Fun — Tue, 15 Jul 2008 01:18:23 GMT

@Dom: Visual Studio c# Express or better is required. It isn't that big of an install.

Are you US based? Send me an email and I'll see if I can't get you a copy some how.

re: Webcam Based Laser Tracking for Human-Computer Interaction

Fergo — Sun, 20 Jul 2008 08:19:00 GMT

Thanks for this article! Very interesting!

I compiled the code but I can't get my webcam to work above 6FPS (it seems that it's locked at that framerate). My webcam can reach 30fps in "My Computer" and other softwares, but not in the laser tracking application (already tried every setting).

Do you have any idea why this is happening?

The application was compiled in "Release" mode with optimizations and I have a quite nice PC, so I don't think the problem is due to "lack of processing speed" or something like that.

Regards,

Fergo

re: Webcam Based Laser Tracking for Human-Computer Interaction

fourier — Thu, 24 Jul 2008 05:03:46 GMT

where i can get the "release" code.. can you help me with this.. i dont know what code to use in the "motion" folder.

re: Webcam Based Laser Tracking for Human-Computer Interaction

Coding4Fun — Thu, 24 Jul 2008 20:26:36 GMT

@Fergo: have you done any debugging on it? Release mode doesn't imply it you'll get a 20% performance boost.

re: Webcam Based Laser Tracking for Human-Computer Interaction

Coding4Fun — Thu, 24 Jul 2008 20:27:41 GMT

@fourier: "release" is a type of compile you can do. Most times you'll do a "debug" build for development.

Could you describe your issue a bit better?

re: Webcam Based Laser Tracking for Human-Computer Interaction

Joe — Sat, 09 Aug 2008 07:08:19 GMT

Why can't I download it? It is so awesome!

re: Webcam Based Laser Tracking for Human-Computer Interaction

Coding4Fun — Mon, 11 Aug 2008 20:20:55 GMT

http://www.codeplex.com/laserinteraction/SourceControl/ListDownloadableCommits.aspx

re: Webcam Based Laser Tracking for Human-Computer Interaction

noglobalwarming2 — Tue, 12 Aug 2008 06:15:03 GMT

The video isnt shown on the program. (I have a logitech quickcam messanger). if anyone has the codes or something, can they please write it down?

re: Webcam Based Laser Tracking for Human-Computer Interaction

Drew — Fri, 29 Aug 2008 21:13:10 GMT

After installing I had an issue with my projector screen being white and the laser pointer not showing properly on a white background.

I taped a peice of clear red plastic to my webcam lense and it is working perfectly

re: Webcam Based Laser Tracking for Human-Computer Interaction

Rabia Javed — Fri, 19 Sep 2008 08:08:52 GMT

hello, i am very much impressed with your code .. i wanted to know ; which algorithm you are using for pointer tracking purpose (i.e kalman...)

waiting for your reply kindly reply as early as possible

Thanku

re: Webcam Based Laser Tracking for Human-Computer Interaction

Rabia — Sat, 20 Sep 2008 08:59:50 GMT

Hi .. i'm really impressed by your code ....

but i wanted to know that which algo you are using for tracking purpose???

waiting for ur replay

thanku

Mais uma utilidade para seu Laser Point « Manias de Geek

Mais uma utilidade para seu Laser Point « Manias de Geek — Mon, 22 Sep 2008 20:13:06 GMT

PingBack from http://maniasdegeek.wordpress.com/2008/09/22/mais-uma-utilidade-para-seu-laser-point/

re: Webcam Based Laser Tracking for Human-Computer Interaction

salamat — Tue, 14 Oct 2008 08:44:41 GMT

hi just want to know if i would put a blank negative film in my camera to lessen the noise or other light to be seen by the camera and so that the brightest light woud be seen (i think IR light could be better seen with the film)

re: Webcam Based Laser Tracking for Human-Computer Interaction

Alan — Thu, 20 Nov 2008 08:00:34 GMT

Thanks for the interesting project. I will have to play around with the AForge Imaging library! It seems very powerful.

re: Webcam Based Laser Tracking for Human-Computer Interaction

jagadeesh — Tue, 23 Dec 2008 11:42:29 GMT

Hi, I am Jagadeesh..doing my final year btech computer science. i thought of implementing similar process as my final year project.. On searching i found ur blog.

i need some help regarding the com ports availabe for video input services..

re: Webcam Based Laser Tracking for Human-Computer Interaction

Coding4Fun — Tue, 30 Dec 2008 01:13:11 GMT

@jagadeesh What type of help do you need?

re: Webcam Based Laser Tracking for Human-Computer Interaction

Pitt — Fri, 10 Apr 2009 21:16:41 GMT

Is the source code available to download? Want to check the code to try to better understand what you did.

re: Webcam Based Laser Tracking for Human-Computer Interaction

Coding4Fun — Wed, 15 Apr 2009 22:20:37 GMT

@Pitt the link is at the top of the screen under "Download" http://www.codeplex.com/laserinteraction

re: Webcam Based Laser Tracking for Human-Computer Interaction

vivek — Fri, 29 May 2009 18:43:57 GMT

hey ashish... m a huge fan of urs.. and m planning to do this project for my final year... could you be my tutor?? :) plzzzz

re: Webcam Based Laser Tracking for Human-Computer Interaction

Rob G — Sun, 05 Jul 2009 11:15:26 GMT

I am trying this as my first go at C#. I have installed the C# software and downloaded your code files, but when i try and build i get Reference path warnings and errors. Being new to this i have been going around in circles. is there a prefereed directory i am meant to download this to??

cheers

re: Webcam Based Laser Tracking for Human-Computer Interaction

Coding4Fun — Tue, 14 Jul 2009 03:38:06 GMT

@Rob G, I just downloaded the solution. All you need to do to get it to run is open up "Motion.sln" then hit F5 to run the program. if you still have issues, email code4fun@microsoft.com

re: Webcam Based Laser Tracking for Human-Computer Interaction

Rob G — Tue, 14 Jul 2009 13:17:53 GMT

Great to see such inovative coding! I think a novel addition is to intergrate with standard presentation plug and play kit, that has page up, page down events built in to command powerpoint presentations, but surely some clever intercepts could make this mouse left mouse right comands and really make this application fly!

Wish i was as smart as you coders!

cheers Rob

re: Webcam Based Laser Tracking for Human-Computer Interaction

Rob G — Tue, 14 Jul 2009 13:27:30 GMT

PS yes i have now worked out how C# works. I am an old engineer who worked previously in fortran but i am getting the hang of this! Clueless on the intracacies though!

re: Webcam Based Laser Tracking for Human-Computer Interaction

Coding4Fun — Tue, 14 Jul 2009 21:11:14 GMT

@Rob G: great to hear you're trying out c#! I'd love to see what you create! Put up a youtube or email us code4fun@microsoft.com

re: Webcam Based Laser Tracking for Human-Computer Interaction

Nisha — Tue, 21 Jul 2009 19:41:26 GMT

hey Ashish...great work...i was planning to doing this for my final year project but could u plz tell me about some kinda new features to add to ur code to make it something more innovative?

re: Webcam Based Laser Tracking for Human-Computer Interaction

paulb — Mon, 27 Jul 2009 08:08:13 GMT

hey Ashish.

I just tried this on my PC. It works great.

I then tried to use it as a mouse controller for a FPS game, but it does not work.

I tried it with the following FPS games:

# Arma

# Call of Duty

# Half life 2

I had "Control Cursor" checked. But as soon as each game loaded (the desktop was no longer visible), the cursor stopped responding to my laser pointer.

I then shutdown the game and returned to "Laser tracking and control" - but it appeared to have frozen (camera view was no longer updating). Re-opening my camera device un-froze the application.

Any idea on how to get this to work for FPS games?

thanks.

Paul.

re: Webcam Based Laser Tracking for Human-Computer Interaction

Coding4Fun — Tue, 28 Jul 2009 21:28:28 GMT

@paulb, not sure how those programs operate but I'm assuming they prevent other applications from taking control of the mouse.

re: Webcam Based Laser Tracking for Human-Computer Interaction

Joe — Wed, 12 Aug 2009 11:29:13 GMT

Could you please make it as .exe file to work under Vista. Thank you very much!

re: Webcam Based Laser Tracking for Human-Computer Interaction

Coding4Fun — Thu, 13 Aug 2009 21:11:26 GMT

@Joe, download Visual Studio Express and try it out ofr yourself! Just hit F5 to compile it.

re: Webcam Based Laser Tracking for Human-Computer Interaction

Nick — Tue, 22 Sep 2009 12:27:27 GMT

Ashish, your project is great indeed!

When I tested it I found some details with my webcam (A4 Tech).

If I set via wmcap.exe the exposure manually to low value (-12 as minimum) I get fps (~17).

If the exposure is at maximum (-10) - fps is approximatelly 6-7.

In auto exposure mode I can reach all 30.5 fps if I do capture near very bright surfice (for example monitor screen) but for all that the webcam seems to be very hot by touch.

Could you explain this behavior?

Regards,

Nick

re: Webcam Based Laser Tracking for Human-Computer Interaction

JPF321 — Wed, 23 Sep 2009 20:24:50 GMT

Ashish, thanks for the wonderful work and blog!

I'm wondering what mods/tweaks were needed to this codebase to write "Hello World" as you did in your demo. It seems that, as is, it only makes mouse-click when laser goes OFF. So how did you get to click & drag lift pen and then click & drag again?

I'm a newbie, but I think my question is a good one

Thanks,

jpf

re: Webcam Based Laser Tracking for Human-Computer Interaction

Coding4Fun — Wed, 23 Sep 2009 22:03:45 GMT

@JPF321 Ashwin's code could do this with an ink control in .net but after PDC (Nov 17 to 19th, 2009) we'll have an article being released that can do this too but with XNA and WPF written by Jeremiah Morrill.

re: Webcam Based Laser Tracking for Human-Computer Interaction

JPF321 — Wed, 23 Sep 2009 22:35:27 GMT

@Coding4Fun .. thanks for the quick response. Thanks!

re: Webcam Based Laser Tracking for Human-Computer Interaction

Mike — Wed, 04 Nov 2009 08:13:25 GMT

The download link isn't working :-(

There is no current recommended release for this Project

Please help

re: Webcam Based Laser Tracking for Human-Computer Interaction

Coding4Fun — Wed, 04 Nov 2009 22:54:17 GMT

@Mike http://laserinteraction.codeplex.com/SourceControl/ListDownloadableCommits.aspx click the download link on the right side.

re: Webcam Based Laser Tracking for Human-Computer Interaction

IAN — Fri, 18 Dec 2009 11:34:57 GMT

the download link isn't working a got an error message

"Sorry, the page you requested was not found"

re: Webcam Based Laser Tracking for Human-Computer Interaction

Coding4Fun — Fri, 18 Dec 2009 20:45:18 GMT

@Ian, just tried, codeplex loaded.