NTSC Camera

Thric

So i've lately been getting interested in interfacing camera with the prop, and i'm looking at what my options are. I know there is Hanno's NTSC camera (http://forums.parallax.com/showthread.php?126769-Tutorial-on-getting-240x200x16-gray-video-INTO-your-Prop) thats in black and white and i've been looking through sites trying to find color NTSC cameras. So the question is do color NTSC cameras even exist or I'm I missing something important with NTSC?

Thanks

Phil Pilgrim (PhiPi)

Color NTSC cameras exist in abundance. Try:

www.supercircuits.com
www.dealextreme.com
www.atvresearch.com

to name just a few sources.

Whether or not one will work with the Propeller depends on what you want to do with it. Color image capture without external circuitry is pretty much out, since it would involve syncing to the color burst, which AFAIK no one has figured a way to do yet. But you can add a black and white overlay using a color camera. See the Propeller Backpack product page for details.

-Phil

Rayman

Check out Perry's "Stupid Video Capture" thread... You can capture low res B&W video (and record to SD) with just a few external components...

Duane Degn

You could fake a color image by using appropriate lens filters. If your subject isn't moving you could have the filters on some sort of disk and take a picture through each filter. There other possible ways of capturing three images through the various filters. All of the ways I can think of seem very impractical.

I don't think it would be impractical to use filters to search for a specific color. Say you wanted to find a red ball. You could compare the raw image against an image taken through a red filter. I'd think with the appropriate algorithm a Prop would be able to pick out the red ball using the two images. This still seems like an inelegant solution though.

I've used Hanno's method myself so I've been thinking about ways to get the most out of it.

Duane