METHOD FOR MEASURING VARIATION OF OPTICAL AXIS OF IN-VEHICLE CAMERA

摘要

PROBLEM TO BE SOLVED: To provide a method for measuring a variation of an optical axis of an in-vehicle camera, which accurately measures the variation of the optical axis due to a temperature change of a stereo camera mounted on a vehicle.

SOLUTION: The method includes: a first and second parallaxes calculation step of switching a first camera between a normal position and an inverted position different in rotation position by 180° to calculate first and second parallaxes which are parallaxes of a target image part between images imaged by the first camera and a second camera at a reference temperature; a third and fourth parallaxes calculation step of calculating third and fourth parallaxes which are parallaxes of the target image part between images imaged by the first camera and the second camera at a specific temperature; and an optical axis variation calculation step of calculating variations of optical axes of the first camera and the second camera due to the change to the specific temperature on the basis of the difference between the first parallax and the third parallax and the difference between the second parallax and the fourth parallax.

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