Method and device for determining position of focusing motor of thermal imager

Abstract

The embodiment of the invention provides a method and device for determining the position of a focusing motor of a thermal imager. The method is applied to a first thermal imager. The method comprisesthe following steps: obtaining a normalization position under a target preset point; wherein the normalization position is a focusing motor position obtained by normalization calculation on a third position in advance through a second thermal imager according to the first position and the second position, the first position and the second position are the focusing motor positions of the second thermal imager under the first object distance and the second object distance respectively, and the third position is the focusing motor position of the second thermal imager under the target preset point; according to the normalization position, the fourth position and the fifth position, the focusing motor position of the first thermal imager under the target preset point is determined, and the fourth position and the fifth position are the focusing motor position of the first thermal imager under the first object distance and the focusing motor position of the first thermal imager under the second object distance respectively. By applying the scheme provided by the embodiment of the invention, a plurality of thermal imagers of the same model can share the position of the focusing motor atthe preset point.

Description

technical field [0001] The invention relates to the technical field of infrared thermal imaging, in particular to a method and device for determining the position of a focus motor of a thermal imager. Background technique [0002] Obtaining a clear image is the most basic requirement of various digital imaging devices, and the focusing process of a thermal imager is actually a process of finding the focal length of an image with the best clarity. There is a group of focusing lenses in the lens of the camera lens of the thermal imager, and the focusing purpose can be achieved by changing the position of the focusing lens. In the automatic focusing mode, the focusing lens is connected to the focusing motor, and the position of the focusing lens is moved by moving the focusing motor . [0003] With the development of infrared thermal imaging technology, the thermal imager has a preset point cruise function, that is, to perform cruise monitoring on multiple preset monitoring ta...

AI Technical Summary

Problems solved by technology

However, if the current thermal imager breaks down or needs to be replaced by another thermal imager for other reasons, it is necessary to re-collect preset point data for the replaced thermal imager, and obtain the The position of the focus motor when the image is clear at the set point. It can be seen that in the case of replacing the thermal imager, the replaced thermal imager needs to re-determine the focus motor position under the preset point according to the above method, which is more cumbersome

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