Focusing method and apparatus, and shooting device

A focusing method and technology of shooting equipment, applied in installation, television, optics, etc., can solve the problems of slow focusing speed, and achieve the effects of reducing the number of times, recoverability of deformation, and deformation

Active Publication Date: 2016-11-23
BEIJING ZHIGU RUI TUO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that the above-mentioned contrast detection focusing process needs to "miss" the depth of focus multiple times to continuously converge to achieve autofocus, and the focusing speed is relatively slow

Method used

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  • Focusing method and apparatus, and shooting device
  • Focusing method and apparatus, and shooting device
  • Focusing method and apparatus, and shooting device

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Embodiment Construction

[0054] Exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It should be understood, however, that in developing any such practical embodiment, many implementation-specific decisions must be made in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and those Restrictions may vary from implementation to implementation. Moreover, it should also be understood that development work, while potentially complex and time-consuming, would at least be a routine undertaking for those skilled in the art having the benefit of this disclosure.

[0055] Here, it should also be noted that, in order to avoid obscuring the application due to unnecessary details, only the device structure and / or processing steps closely related t...

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Abstract

The application discloses a focusing method and apparatus, and a shooting device. The focusing method comprises the following steps: controlling deformation of an image sensor so that reference points in at least two imaging sub-zones of the deformed image sensor form a first relative position relation of staggered distribution along the depth direction; obtaining contrast data of sampling images of a to-be-shot object in the at least two imaging sub-zones; and determining and/or adjusting the focusing state of the image sensor at least according to the first relative position relation and the contrast data. Through the application, the speed and/or precision of determining and/or adjusting the focusing state of the image sensor can be improved.

Description

technical field [0001] The present application relates to the technical field of terminals, and in particular to a focusing method and device, and a photographing device. Background technique [0002] Contrast detection focusing technology, also known as contrast detection focusing technology, is one of the widely used passive autofocus technologies at present. Its principle is to find the focus corresponding to the maximum contrast data according to the change of the contrast data of the sampled image at different focus depth positions of the shooting device. The depth position is used as the best focus depth position, that is, the in-focus depth position. [0003] Taking the contrast of the sampled image as the contrast data as an example, the focusing process of contrast detection usually includes: moving the focusing lens along the depth direction. When the image is clearest and the contrast is the highest, the imaging surface of the image sensor is already at the depth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232
CPCH04N23/673H04N23/675G02B7/38
Inventor 杜琳
Owner BEIJING ZHIGU RUI TUO TECH
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