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-   -   Camera field of vision-how big? (pixels) (http://www.chiefdelphi.com/forums/showthread.php?t=42342)

RedOctober 21-01-2006 11:20

Camera field of vision-how big? (pixels)
 
Hey guys, how big is the cameras field of vision? I am trying to map out the position of the light within the cameras field of view using the CMUcam2 program but I need to know the max values of the x and y values. Thanks!

pclements 21-01-2006 11:36

Re: Camera field of vision-how big? (pixels)
 
I, have no clue, I can ask around if I get the chance, it's probably in the manual some where.

Jared Russell 21-01-2006 20:34

Re: Camera field of vision-how big? (pixels)
 
X is 0-160. Center at 79.

Y is 0-239. Center at 119.

However, this will probably look funny on your readout. You need to double the X value to get a sensible looking aspect ratio because the CMUcam destroys half of the horizontal pixels to create macropixels and save space.

Al Skierkiewicz 22-01-2006 08:57

Re: Camera field of vision-how big? (pixels)
 
Don't forget the size of the target changes with distance. The lens is a fixed focal length and focus.

Jared Russell 22-01-2006 14:18

Re: Camera field of vision-how big? (pixels)
 
As long as the height of the camera is fixed, you can figure out your position by the camera pan, tilt, mx, and my data.

That's what I do on this:



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