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Focusing compensation method and device, electronic equipment and storage medium

A focus compensation and post-compensation technology, used in TV, electrical components, color TV, etc., can solve the problem of inaccurate focus compensation and achieve the best clarity

Active Publication Date: 2020-04-28
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a focus compensation method, device, electronic equipment, and storage medium to solve the problem of inaccurate focus compensation in the prior art

Method used

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  • Focusing compensation method and device, electronic equipment and storage medium
  • Focusing compensation method and device, electronic equipment and storage medium
  • Focusing compensation method and device, electronic equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] figure 1 A schematic diagram of the focus compensation process provided by the embodiment of the present invention, the process includes the following steps:

[0054] S101: Acquire a first sharpness value of a first image captured by the image acquisition device when the image acquisition device is focused.

[0055] The focus compensation method provided by the embodiment of the present invention is applied to an electronic device, and the electronic device may be a PC, a personal computer, etc., or an image acquisition device.

[0056] In the embodiment of the present invention, before performing focus compensation, first wait for the image acquisition device to focus. The image acquisition device has focused. It refers to the general focus function integrated by the image acquisition device according to the requirements, such as the focus triggered by zooming and rotating the pan / tilt. . Moreover, the focus compensation method provided by the embodiment of the prese...

Embodiment 2

[0065] In order to make the determined second adjustment direction more accurate, on the basis of the above embodiments, in the embodiment of the present invention, the determining the second adjustment direction according to the first sharpness value and the second sharpness value includes:

[0066] controlling the motor of the image acquisition device to adjust from the second position to the first position, and obtaining a fourth definition value of a fourth image collected by the image acquisition device;

[0067] If the second sharpness value is greater than the first sharpness value and the fourth sharpness value, determine that the second adjustment direction is the same as the first adjustment direction;

[0068] If the second sharpness value is smaller than the first sharpness value and the fourth sharpness value, it is determined that the second adjustment direction is opposite to the first adjustment direction.

[0069] In order to avoid the problem of inaccurate de...

Embodiment 3

[0074] On the basis of the above-mentioned embodiments, in the embodiment of the present invention, in the second adjustment direction, each third position of the motor is sequentially determined, and each third position is acquired The third sharpness value of the third image, and the third position corresponding to the largest third sharpness value as the compensated motor position includes:

[0075] A. In the second adjustment direction, according to the preset adjustment step and the second position, determine the third position of the motor, and obtain the third definition of the third image collected at the third position value;

[0076] B. Determine whether the third sharpness value is greater than the second sharpness value, if so, use the third sharpness value to update the second sharpness value, and use the third position to update the second sharpness value update the second position, and return to step A, if not, use the third position as the motor position after...

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PUM

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Abstract

The invention discloses a focusing compensation method and device, electronic equipment and a storage medium. According to the embedment of the invention, the method comprises the steps: obtaining a first definition value of a first image collected by image collection equipment when the focusing of the image collection equipment is completed; controlling the position of a motor, and then acquiringa second definition value of a second image acquired by image acquisition equipment; determining a motor position adjustment direction according to the first definition value and the second definition value; sequentially determining third definition values of third images acquired at each third position of the motor in the motor position adjustment direction, and taking the third position corresponding to the maximum third definition value as a compensated motor position. Therefore, when the image acquisition equipment is used for a long time to cause hardware aging or slow deformation possibly occurs in the use process due to the quality problem of hardware, the motor of the image acquisition equipment can be ensured to be adjusted to the compensated motor position to enable the definition of the acquired image to be optimal.

Description

technical field [0001] The invention relates to the technical field of video monitoring, in particular to a focus compensation method, device, electronic equipment and storage medium. Background technique [0002] The hardware of the image acquisition device is aging due to long-term use, or the slow deformation may occur during use due to the quality of the hardware itself, which will cause the image acquisition device to focus inaccurately, that is to say, after the image acquisition device is focused, the captured image Still vague. Moreover, within a few minutes after the normal focusing of some image acquisition devices is completed, the collected images appear blurred. [0003] In the prior art, when compensating the focus position, the focus position of the stepper motor is generally counted according to the change of the ambient temperature, and the corresponding relationship between the temperature and the focus position is established to realize the compensation f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232
CPCH04N23/67
Inventor 虞卫勇
Owner ZHEJIANG DAHUA TECH CO LTD