Quote:
Originally Posted by Adam Y.
No. It's surprisingly much more complicated than that. The main reason is that in order to do that you have to account for the distortions caused by the camera. I actually performed a calibration for my optics project using a 200.00 dollar camera. The distortion for some areas of the image was as high as 20 pixels.
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There's the magic word. Given the uncertain inputs to the analytical solution (unless you want to take apart that camera and do some serious optics testing) why not just image the vision target at a range of distances and generate an image height vs. distance curve? If that goes by too quickly, do it repeatedly in different areas of the image to correct for the aberrations.
overly agressive play, sudden torque gains, and signs of robot acne will cause immediate suspicion, and may be used as justification for a complete tear-down inspection - dlavery [more] 
05-01-2009, 01:22
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