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Low Cost Video Usage

2010/06/23

jonititan

United Kingdom

Arduino projects to convert PAL & NTSC Video to something that can be used in a project exist.

http://homepage.mac.com/dave_chatting/arduinoeyeshield/

However is there any way to utilise the ubiquitous Webcam in a project?

These would provide a low cost video sensor if they could be used in some way.

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jonititan

United Kingdom
1年 前

http://www.araa.asn.au/acra/acra2009/papers/pap116s1.pdf

LStacey

United Kingdom
1年 前

Thanks!

jonititan

United Kingdom
1年 前

I've found a paper that details using a CMOS and an FPGA to make an optic FLow sensor.

The camera is the MT9M001 from Micron and the FPGA is a Xilinx Spartan-3E.

 

FPGA Implementation of an Optic Flow Sensor using the Image Interpolation Algorithm

M.A.Garratt A.J.Lambert T.Guillemette

University of New South Wales, Australia

Australasian Conference on Robotics and Automation (ACRA), December 2-4, 2009, Sydney, Australia

LStacey

United Kingdom
1年 前

Is the paper on the web?  Do you have a link?

jonititan

United Kingdom
1年 前

Perhaps some processing to create the optic flow signals which could then be passed to the Arduino or other controller.

LStacey

United Kingdom
1年 前

More info here:

http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1213366987

Not looking too bright.

jonititan

United Kingdom
1年 前

Perhaps I'm misunderstanding how a webcam works.

I had assumed that there would be a chip in there capturing the video and another chip controlling the usage and controlling how the signal is sent over USB.

I expected large amounts of data transfer. 

I was hoping that because the data could be used to create an optic flow sensor.

Another usage would be horizon sensing for a UAV.

LStacey

United Kingdom
1年 前

I have no idea actually... They are a bit of a mystery.  All I do know is that if it was easy, the Linux community wouldn't make so much noise about it being virtually impossible to get some webcams to work.

LStacey

United Kingdom
1年 前

Hmm.  Tricky one...  The biggest problem with webcams is that they require drivers and not many manufacturers of said devices give away the information required to homebrew such things.

I'll have a dig around to see what info I can find.  I'm thinking that Linux related forums might be the best place to look for clues as Linux users often get no choice but to use homebrew drivers.