Method and system for calibrating long-baseline infrared binocular imaging ceilometer

Abstract

The invention relates to a method and system for calibrating a long-baseline infrared binocular imaging ceilometer in a laboratory instead of site calibration. The method comprises the following steps: mounting a goniometer for each of a first camera system and a second camera system of the long-baseline infrared binocular imaging ceilometer; adjusting the camera systems to be vertical, and recording a pitch angle a0 and a roll angle b0, measured by the goniometers, of the second camera system relative to the first camera system; rotating the camera systems to be horizontal, and by virtue of an included angle in x or y direction, measuring a rotation angle R0 of the first camera system relative to the second camera system; placing a target object in front of the camera systems, calculating a pitch angle a1, a roll angle b1 and a rotation angle R1 of the second camera system relative to the first camera system; calculating the pitch angle a0-a1, the roll angle b0-b1 and the rotation angle R0- R1 of the second camera system relative to the first camera system. Through the high-precision goniometers, the relative pitch angle, the relative roll angle and the relative rotation angle of the two cameras are measured; the calculating method is simple; a laboratory calibration method is achieved.

Description

technical field [0001] The invention belongs to the field of calibration of binocular imaging instruments used in meteorology, aviation and surveying and mapping, and particularly relates to a long baseline infrared binocular imaging ceilometer laboratory calibration method and a calibration system instead of on-site calibration. Background technique [0002] In the prior art, the binocular ranging technology in photogrammetry is very mature. There are also many methods for calibrating the inner orientation elements of the camera, the outer orientation elements and the attitude angle of the binocular imaging, such as Zhang Zhengyou calibration method. However, the above calibration methods must require two cameras to be able to shoot the calibration target at the same time. However, in the process of calibrating the long-baseline infrared binocular imaging ceilometer, due to its long baseline, it is generally 50 meters or even longer. It is difficult to set a fixed calibrat...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a long baseline infrared binocular imaging ceilometer laboratory calibration method and a calibration system to replace the on-site calibration method, to solve the problem of long baseline infrared binocular imaging ceilometer calibration

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