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Camera on stingray?? — Parallax Forums

Camera on stingray??

RNRN Posts: 28
edited 2010-08-28 02:48 in Propeller 1
I am doing a project in robotics using stingray bots. My need is that stingray should have a camera on top and it should be able to do image processing stuff like depth perception, segmentation etc. I have 2 options either to send the whole image to a central computer for which I have mounted XBEE module. The second option is that it do on board processing. The limitation with XBEE modules is that even the smallest size picture will take few seconds to get tansmitted(assuming XBEE speed as 115200 bps). I want to know is their any option by which i can do on board processing.

Comments

  • AleAle Posts: 2,363
    edited 2010-08-27 02:22
    There are several toolkits for image processing. C code with examples. They are compute-intensive so they may need a PC. I just do not remember how they are called. Just google them. I had a similar idea and was thinking of using a propeller...

    Just "simulate" what you want and then make it fit your bot:

    Still images, process them get the info you need using a PC. Then use imagery from a camera, process them, etc and see what size of memory you need (size of code and data and compute time). Then downsize it to a microcontroller-level (slower, smaller memory, etc). and see what you need as compute power. The other way around "I want to use an attiny to do the processing" may not yield. :)
  • KyeKye Posts: 2,200
    edited 2010-08-27 07:00
    Google "CMUCAM".
  • RaymanRayman Posts: 14,889
    edited 2010-08-27 12:47
    I've worked with a couple C328 cameras (see my website) which are VGA with serial interface and also a low-res "preview" mode which is good for small size images that the Prop can handle. Unfortunately, this camera is now hard to find.

    I think I found a B&W version of it here:
    http://www.electronics123.com/s.nl/sc.8/category.241/.f

    On the bottom of that page is a little module with an 8-bit digital stream output. I looks very similar to a little module I posted about recently. That one looks like much more of a challenge to interface with though...

    Another option is "stupid video capture", which you may find posts about if the search is working... This lets you slowly capture low res images in B&W from a regular NTSC camera with just a few external components.
  • Ron CzapalaRon Czapala Posts: 2,418
    edited 2010-08-27 12:56
    I bought the C328R-2820BW model from them.
    It is a color camera - the BW in the model number apparently does not mean black and white...
  • RNRN Posts: 28
    edited 2010-08-28 02:48
    thanks I will check them and see if they can be interfaced....
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