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Automatic focusing method and apparatus, storage medium and electronic device

An automatic focus and focus position technology, applied in the imaging field, can solve the problem of inaccurate judgment of the changing trend of image clarity, and achieve the effect of improving the accuracy of focusing

Inactive Publication Date: 2017-09-22
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides an automatic focusing method, device, storage medium and electronic equipment, which can improve the defect of inaccurate judgment of the image definition change trend in the traditional automatic focusing method

Method used

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  • Automatic focusing method and apparatus, storage medium and electronic device
  • Automatic focusing method and apparatus, storage medium and electronic device
  • Automatic focusing method and apparatus, storage medium and electronic device

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Embodiment Construction

[0036] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the invention is for the purpose of describing specific embodiments only, and is not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the ...

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Abstract

The invention relates to an automatic focusing method and apparatus, a storage medium and an electronic device. The automatic focusing method comprises the following steps: controlling a motor to scan a focusing position at a first step length to find a first interval where the focusing position is located; controlling the motor to scan the focusing position at a second step length within the first interval, wherein the second step length is smaller than the first step length; when it is judged that the definition of an image is in an ascending trend before a lens arrives at a first position and is in a descending trend on at least two continuous positions after the lens arrives at the first position, calculating the focusing position according to positions in a second interval, wherein the second interval comprises the first position; and controlling the motor to drive the lens to move to the focusing position. By adoption of the automatic focusing method and apparatus, the storage medium and the electronic device, the influence of inaccurate definition of the image corresponding to a certain position (for example, descending at improper times) caused by extreme environments can be avoided, and thus the focusing accuracy is improved.

Description

technical field [0001] The invention relates to the field of imaging technology, in particular to an automatic focusing method, device, storage medium and electronic equipment. Background technique [0002] Autofocus technology has been more and more widely used. This technology uses the principle of object light reflection to change the position of the lens by adjusting the motor, so that the clarity of the image can be maximized, even if the lens reaches the focus position. However, in some extreme scenes, such as low-light scenes, the traditional autofocus method is often not particularly accurate in judging the trend of image clarity changes, resulting in inaccurate focusing. Contents of the invention [0003] The invention provides an automatic focusing method, device, storage medium and electronic equipment, which can improve the defect of inaccurate judgment of the image definition change trend in the traditional automatic focusing method. [0004] An autofocus met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232
CPCH04N23/67
Inventor 李小朋
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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