Re: Comparing images and producing co-ordinates

"James" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I'm looking for free software that will allow me to take 2 images from
> a web cam and recognise the differences between them.

Simple enough problem as described. Start with subtracting one image from
the other to find when the LED is on or not. Identifying coordinates gets a
bit more complicated, depending on how accurate you want the result to be,
and in what format.

You could do the first part with FreePiXCL in perhaps 10-20 lines of high
level code (and make a Windows EXE if you want). The second part would
require commands from the not free PiXCL 5 that identify blobs by size,
brightness and coordinates.

If you're a pennyless student looking for free software, keep looking, or
write the code yourself. Otherwise, you'll have to consider paying for the
software that other people have spent years developing.

regards,
Stewart DIBBS
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Developer of the FreePiXCL 4.48
PiXCL 5 and geoPiXCL 5 Image Processing Languages
for Windows 2000/XP
www.vysor.com  Gatineau, Quebec, CANADA
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