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Camera calibration matrix and distortion coefficient

asked 2017-04-09 21:03:14 -0500

If I calculate the camera calibration matrix and distortion coefficient using chessboard images for an iPhone 6s, can this calibration matrix and distortion coefficient data be used to perform Stereo rectify and then undistort images snapped using another iPhone 6s ( i.e., same model of iPhone by a different physical device)?

Thanks a lot for your help,

Prosenjit

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answered 2017-04-10 07:54:32 -0500

---- No. ----

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Actually thats not true. Agreed the result will not be perfect, but two similar camera types should in principle be related to each other. I cannot believe that a manufacturer allows large deviation in his setups.

StevenPuttemans gravatar imageStevenPuttemans ( 2017-04-10 08:10:35 -0500 )edit
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@StevenPuttemans You may well be right, especially regarding iPhone 6 lenses. In my (limited) experience, same model web cams will have different calibration results such that if you accidentally use the parameters from a different camera you will get noticeably bad results.

Der Luftmensch gravatar imageDer Luftmensch ( 2017-04-10 20:50:41 -0500 )edit

I guess it all depends on the camera you are using. Indeed cheaper webcam models might have large lens deviations... again, this is a guess from my side, never experienced with this to see the actual degradation in quality, might be an interesting master thesis for one of my students.

StevenPuttemans gravatar imageStevenPuttemans ( 2017-04-11 03:52:52 -0500 )edit
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I too think for 2 iPhones of the same model like iPhone 6s should have the same calibration matrix and distortion coefficient-- their manufacturing process should be consistent.... particularly since the distortion coefficient is very low. If your students try this out please share with us what you find.

Prosenjit gravatar imageProsenjit ( 2017-04-11 21:08:20 -0500 )edit
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Asked: 2017-04-09 21:03:14 -0500

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Last updated: Apr 10 '17