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-   -   Camera calibration file - do we need it? (http://www.chiefdelphi.com/forums/showthread.php?t=154314)

BitTwiddler 26-01-2017 23:16

Camera calibration file - do we need it?
 
We have modified the example vision processing code to target the vertical stripes of the peg. So far so good.
What's bothering me is the code that corrects the video for camera distortion based on a file called Calibration File640x480.png. Are we expected to create our own calibration file specific for our camera? Do we just use the file included with the example code?
If we need to create our own calibration file where can we find the procedure for creating it? I have yet to see any specific instructions for that anywhere. Did I miss something?

flemdogmillion 27-01-2017 17:48

Re: Camera calibration file - do we need it?
 
Quote:

Originally Posted by BitTwiddler (Post 1636944)
We have modified the example vision processing code to target the vertical stripes of the peg. So far so good.
What's bothering me is the code that corrects the video for camera distortion based on a file called Calibration File640x480.png. Are we expected to create our own calibration file specific for our camera? Do we just use the file included with the example code?
If we need to create our own calibration file where can we find the procedure for creating it? I have yet to see any specific instructions for that anywhere. Did I miss something?

I've fiddled with turning that on and off, and it does nothing. It's really only for when the camera is looking up a significant angle. When targeting the peg, this is not the case.

BitTwiddler 28-01-2017 23:00

Re: Camera calibration file - do we need it?
 
Quote:

Originally Posted by flemdogmillion (Post 1637219)
I've fiddled with turning that on and off, and it does nothing. It's really only for when the camera is looking up a significant angle. When targeting the peg, this is not the case.

I couldn't really see a significant difference between calibrated on or off either. I've also dug into the Vision assistant documentation to learn more but came away more confused than ever. I think we'll turn it off unless someone can give a good reason to keep it.


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