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Zoom tracking method and device, equipment, and storage medium

A technology of zoom tracking and current cycle, applied in TV, color TV parts, electrical components, etc., can solve the problems of complicated operation, misjudgment of object distance, and high cost, achieve clear images throughout the whole process, improve stability, and avoid inconvenience. reliable results

Active Publication Date: 2020-12-25
SUZHOU KEDA TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing method requires additional calibration of the lens tracking curve provided by the lens manufacturer to determine the object distance. The operation is complicated and the cost is high. When the picture changes sharply during the zooming process, there may be unreliable image detail information and thus Situations that lead to misjudgment of object distance

Method used

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  • Zoom tracking method and device, equipment, and storage medium
  • Zoom tracking method and device, equipment, and storage medium
  • Zoom tracking method and device, equipment, and storage medium

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Embodiment Construction

[0053]Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0054] Furthermore, the drawings are merely schematic illustrations of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemen...

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Abstract

The invention provides a zoom tracking method and device, equipment and a storage medium, and the method comprises the steps: adjusting the step length of a focusing motor according to the proportional quantity of a current period; obtaining n+1 frames of images when the focusing motor steps according to the step length in the current period, wherein n is an integer greater than or equal to 1; inthe n + 1 frames of images, taking the sum of difference values of detail information of each pair of two adjacent frames of images as an integral quantity of a current period; calculating the feedback quantity of the current period at least according to the detail information of the image of the current period; and calculating the proportional quantity of the next period according to the proportional quantity of the current period, the integral quantity of the current period and the feedback quantity of the current period. According to the method and device provided by the invention, the calibration cost is reduced, and the stability and robustness of the zoom tracking algorithm are improved.

Description

technical field [0001] The present invention relates to the field of cameras and imaging equipment, in particular to a zoom tracking method, device, equipment and storage medium. Background technique [0002] For imaging equipment related to digital cameras and video surveillance, the lens is one of the essential components of the imaging equipment. The focal length of the lens in the imaging system can be divided into fixed and non-fixed, and the present invention is mainly based on a lens with a variable focal length. As the focal length of the lens changes, the field of view of the image will also change, the longer the focal length. The smaller the field of view, the larger the target subject in the picture. [0003] The structure of the zoom lens is relatively complicated, and can be divided into two parts according to the function: the afocal zoom system (afocalzoom system) and the focusing lens (focusing lens). Such as figure 1 As shown, the afocal zoom system inc...

Claims

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Application Information

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IPC IPC(8): H04N5/232
CPCH04N23/67
Inventor 陈瑶傅君王佛荣章勇
Owner SUZHOU KEDA TECH
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