stereo calibration intrinsics are different than single camera calibration

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Eyal 2016-10-6

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评论： Florian Morsch 2018-6-4

I have checkerboard data from two cameras. If I run the stereo calibration app and look at the calibration results for each camera the results are different than if I run the single camera calibration for each camera separately. The difference between the results is not within the error estimation.

Can anyone explain why there is a discrepancy between the two?

Thank you!

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Florian Morsch 2018-6-4

Do you use the same set of pictures for both calibrations? If you use different sets you also will get different values.

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Answer 1

Diarmaid Cualain 2018-5-30

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I suspect that in stereo calibration, as both cameras are calibrated simultenously, one cameras calibratin might componsate for a slight-mis calibration of the other camera. This would result in different calibration values for a camera calibrated on its own vs. as a stereo pair. However, I would assume that the variance would be very small.