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Camera focusing method, camera focusing device and terminal

A focusing method and camera technology, applied in the field of imaging, can solve problems such as wrong selection of focusing objects, low focusing efficiency, and frame size limitations

Active Publication Date: 2015-02-18
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiments of the present invention provide a camera focusing method, device and terminal to solve the problem that in the prior art, when manually selecting the focus object, due to the limitation of the size of the camera screen, it is easy to wrongly select the focus object, which makes the focus efficiency relatively low. low problem

Method used

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  • Camera focusing method, camera focusing device and terminal
  • Camera focusing method, camera focusing device and terminal
  • Camera focusing method, camera focusing device and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] figure 1 The implementation flow of the camera focusing method provided by the first embodiment of the present invention is shown, and the details are as follows:

[0062] In step S101, the focus area selected on the camera image is acquired.

[0063] Specifically, the camera includes but is not limited to a mobile phone camera, a notebook camera or a special camera or video camera, and the way the camera acquires images includes but is not limited to a CCD (Charge-coupled Device in English, and a Charge-coupled Device in Chinese). ) photosensitive original for photosensitive acquisition or CMOS (English full name is Complementary Metal-Oxide Semiconductor, Chinese full name) photosensitive original photosensitive acquisition.

[0064] The camera image refers to an image acquired by the camera when taking photos or videos.

[0065] The focus area selected on the camera image may be a focus area determined by receiving a touch instruction input by a user, or may be a f...

Embodiment 2

[0079] figure 2 The implementation flow of the camera focusing method provided by the second embodiment of the present invention is shown, and the details are as follows:

[0080] In step S201, the focus area selected on the camera image is acquired.

[0081] In step S202, the depth information of each pixel in the camera image is obtained.

[0082] Specifically, the depth information of the camera image, that is, the distance of each pixel point of the object in the scene relative to the imaging terminal, the object can be a person, tree, car, house, etc. can be imaged in the shooting camera through light reflection, and can be observed object. The depth information of the image can be obtained through various current methods for calculating the depth information of the image, for example, the depth information of each point in the object can be obtained through laser radar ranging, or through zoom ranging, or multi-baseline stereoscopic imaging way to obtain the depth in...

Embodiment 3

[0103]On the basis of Example 2, image 3 It shows the implementation process of searching for pixels whose depth information satisfies the threshold range in the image according to the preset threshold range when the focus area is the focus area automatically searched by the camera according to the third embodiment of the present invention, The details are as follows:

[0104] In step S301, average depth information in the camera images is calculated.

[0105] Specifically, the average depth information of the camera image may be calculated by averaging the depth information of each pixel in the camera image.

[0106] In step S302, the threshold range is set as a range smaller than the average depth information, and pixels smaller than the average depth information are searched for.

[0107] According to the average depth information calculated in step S301, it is compared with each pixel in the camera image, and the image can be divided into two parts, one part is an area ...

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Abstract

The invention provides a camera focusing method, a camera focusing device and a terminal. The camera focusing method comprises the steps of acquiring a focusing area selected on a camera image; confirming the area which corresponds to the focusing area and is provided with a main object according to the depth information of the camera image; focusing according to the area at which the main object is arranged. The camera focusing method provided by the invention can be used for solving the problem that inaccurate focusing occurs easily as the size and the shape of a focusing area are fixed and are inconsistent to the area at which the main object is arranged when the focusing area is selected in the prior art, so that the focusing effect can be improved.

Description

technical field [0001] The invention belongs to the field of imaging, and in particular relates to a camera focusing method, device and terminal. Background technique [0002] When the camera is taking pictures, in order to obtain a clear image, the camera needs to be focused, for example, by changing the focal length of the lens, or changing the distance between the optical center of the lens and the film plane, so that the camera can focus on the picture object that the user wants to shoot. [0003] The currently commonly used focusing method is: by manually selecting a focus area, the camera measures the distance of the selected focus object, and automatically focuses according to the distance measured. [0004] During the process of implementing the present invention, the inventors found at least the following problems in the prior art: when manually selecting the focus object, due to the limitation of the camera image or the size of the object, it is easy to select the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232
Inventor 孙剑波蓝和张弓张学勇韦怡
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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