Video stream capture and frame comparison using webcam

[saad]

Hi , I want to record video stream of web cam, can you guide me.
What all I want is :

I am developing a kids shooting game using a laser gun.

I need to compare each frame for a set of pixels.

Step 1. Capture video stream of web cam
Step 2. Save each frame as JPG / any other still image format ( may be I stay in video format - which ever is easier )
Step 3. Compare each frame to find the group of pixel color of laser spots.

If found , save the frame as JPG.
Thanks

[ventsyv]

Are you using a particular web cam, or you want to stay generic? What operating system are you going to support? If I have to guess, you'll need to look into DirectX or some other image acquisition API Microsoft provides. Maybe Windows Presentation Foundation - I think that's the latest MS is pushing.

[saad]

Thanks, I am using Win XP, I want to remain generic in Web Cams.

I know C++ ( Using Dev C++ ) , Java , last night got Visual C as well just to solve the mystery of Video.

Trying over OpenCV , but unable to compile the example codes , probably setting issue.

Selection of C++ or Java so far is equally good for me.
Basic Idea.
My idea is to make a shooting game, the scenes of game ( as on monitor ) will be displayed on Wall using Video Projectors and Web cam to continuously capture the scenes. One Function will keep a look out for Laser Spot in the scene made by a laser gun by playing kids, track location of spot and compare with polygon of flying duck / airplane in the scene to declare hit or miss.
With Regards.

[saad]

I am now using OpenCV Ver 2.0 , with Code Block, It is working fine. Hopefully I shall be able to solve the issue. I shall post my code on completion here just to say thanks to the Admin / moderators and encourage the visitors of this site.
Regards

[saad]

Can you tell me how to add image in my reply. Wanted to post the results of screen capture / screen shots of my project interfaces.

Do not understand the use of tags , [url][/url] etc. thanks

[Wizard]

You have to upload your image to an image site like photobucket.com, then you can just copy the URL for that image into your post and the forum software will automatically turn it into a link.

[saad]

Thanks Dear Wizard.
I shall do that.

[Ulrike]

How you make a webcam work so you can communicate with people?

you need a mic to your webcams. one that you can plug to your pc. and ready get it track a cell phone started

[bonnie434]

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