But let me have a look at the images anyway - maybe I'll notice some simple problem.
> "hardware problems" - what can that be? If camera is not working - you'll > notice that easily. What else can jeopardize calibration? I can think of: > 1 - changing camera settings acquisition parameters (especially WOI) > between shots > 2 - changing lens settings (focus) > Other than that (if the images look OK - normal brightness, contrast) - I > can not think of anything. > One more thing after (I read their instruction) - some problem withe the pattern you used, it may not be an easy task to do that correctly. We use different pattern ( http://blog.elphel.com/2011/10/subpixel-registration-and-distrortion-measurement/) and we calibrate the pattern itself too using many more measurements from different locations, so for us minor errors in the target (i.e. non-flatness) are not critical, but they probably are important in the calibration they use. Andrey
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