Multispectral camera and optical axis synchronization calibration method for multispectral camera

Abstract

The invention discloses a multispectral camera and an optical axis synchronous calibration method of the multispectral camera, which are used for improving the synchronization of the optical axes of different imaging systems and improving the image quality of the multispectral camera. The multi-spectral camera includes a casing, a plurality of imaging systems arranged side by side, the plurality of imaging systems are located in the casing, and the casing has a mounting surface for installing the plurality of imaging systems; the mounting frame is used to fix any imaging system in the plurality of imaging systems System; an adjustment mechanism that drives the mounting frame to rotate around the first axis and / or the second axis, the first axis extends along the arrangement direction of the two imaging systems, the second axis is perpendicular to the first axis and parallel to the mounting surface; the controller is used When the center of the target image collected by the imaging system fixed on the mounting bracket does not coincide with the center of the preset calibration cursor, the control adjustment mechanism works until the center of the target image coincides with the center of the calibration cursor, and each calibration cursor is aligned with the center of the calibration cursor. The centerline optical axes of the corresponding imaging systems coincide.

Description

technical field [0001] The invention relates to the technical field of photography equipment, in particular to a multispectral camera and a method for synchronously calibrating an optical axis of the multispectral camera. Background technique [0002] In the field of monitoring technology, a single spectral imaging monitoring system can no longer meet the market's security monitoring needs for harsh environments such as smog and snow, complex monitoring scenarios, and nighttime. Thermal imaging uses non-contact detection of infrared energy (heat) and converts it into electrical signals to generate thermal images on the display, which can meet the needs of harsh environments such as smog and snow, as well as night and ultra-long-distance security monitoring. A camera that integrates visible light imaging with the advantages of high pixels, full color, and strong resolution, and infrared thermal imaging with the characteristics of long detection distance, strong concealment, a...

AI Technical Summary

Problems solved by technology

[0003] The current thermal imaging cameras either need to control different lenses separately to achieve the same field of view, or adjust the field of view to compensate for the asynchronous optical axis, but these two adjustment methods are low in efficiency and take a long time to adjust , the field of view synchronization effect is not accurate enough. When the lens is a fixed focal length lens, the field of view angle of the lens is fixed, and there is no zoom drive motor on the lens, so the optical axes of different lenses cannot be synchronized through adjustment.

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