A zoom tracking method, device and zoom camera

Abstract

Embodiments of the present invention provide a variable magnification tracking method, device and variable magnification camera. The method includes: when the lens captures the picture, predicting the positions corresponding to the focus motor and the focus motor when the picture is taken, and obtaining the first position corresponding to the focus motor and the second position corresponding to the focus motor; The selection method of the object distance curve in the distance curve cluster; according to the selection method and the third position, the second position is corrected to obtain the fourth position, wherein the third position is the corresponding position of the predicted focal length motor and the focal length motor Corresponding position: move the focus motor according to the first position, move the focus motor according to the fourth position, and control the image acquisition module to collect the picture captured by the lens after the movement is completed. Compared with the prior art, applying the solutions provided by the embodiments of the present invention can realize effective zoom tracking not limited by the object distance, so that the pictures captured during the zoom tracking process have higher definition.

Description

technical field [0001] The invention relates to the technical field of variable magnification cameras, in particular to a variable magnification tracking method, device and variable magnification camera. Background technique [0002] With the continuous development of science and technology, the types of cameras are also constantly enriched. Among them, variable-magnification cameras have begun to be used in more and more fields, such as the field of all-weather monitoring and the field of machine vision inspection. The so-called variable magnification camera refers to a camera that can change the focal length and focus position of the camera lens by moving the focal length motor and the focus motor during the shooting process, thereby changing the magnification of the camera. [0003] The focal length and focus position of the camera lens play an important role in the clarity of the image captured by the camera. Therefore, during the shooting process of the zoom camera, if...

AI Technical Summary

Problems solved by technology

[0005] Since the object distance in the zoom tracking process is fixed by default in this zoom tracking method, when the object distance changes, using this zoom tracking method will cause the problem of low picture resolution

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