Method, device and mobile device for rapidly focusing

A fast, focusing value technology, applied in the field of mobile communication, can solve the problem of low efficiency of focusing algorithm, and achieve the effect of reducing the number of image frames, improving focusing efficiency and improving efficiency

Active Publication Date: 2014-10-15
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 the existing focusing algorithm, the focusing system will re-run this process every time it focuses. It usually takes a few frames or a distance of more than a dozen frames to find the focus. That is, the efficiency of the existing focusing algorithm is low.

Method used

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  • Method, device and mobile device for rapidly focusing
  • Method, device and mobile device for rapidly focusing
  • Method, device and mobile device for rapidly focusing

Examples

Experimental program
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no. 1 example

[0026] figure 2 It is an implementation flowchart of the fast focusing method provided in the first embodiment of the present invention. The method can be executed by a fast focusing device, which can be implemented by software and / or hardware, and can be built in as a part of the mobile device Inside the mobile device. Such as figure 2 As shown, the implementation process includes:

[0027] Step 11. Determine the target focus area in the current picture captured by the camera according to the user's operation.

[0028] When the user takes pictures with the camera in the mobile device, the display screen of the mobile device displays the current picture captured by the camera. The quick focus device determines the target focus area in the current picture acquired by the camera according to the user's operation on the current picture. The user can select the target focus area by clicking on the area in the current picture.

[0029] Step 12. If the target focus area exist...

no. 2 example

[0045] image 3 It is an implementation flowchart of the fast focusing method provided in the second embodiment of the present invention. The method can be executed by a fast focusing device, which can be implemented by software and / or hardware, and can be built in as a part of the mobile device Inside the mobile device. This embodiment is applicable to the situation that the current picture is the same picture as one of any focused pictures. Such as image 3 As shown, the implementation process includes:

[0046] Step 21. When focusing on any focused frame, the focused frame is divided into multiple areas in advance, and when focusing on one of the areas in the focused frame, the processor counts each area in the focused frame The focus value in .

[0047] For example, in the second embodiment of the present invention, the currently focused picture and the focused picture are both Figure 4 the screen shown. when facing as Figure 4 When the A area in the focused pictu...

no. 3 example

[0056] Figure 5 It is an implementation flow chart of the fast focusing method provided in the third embodiment of the present invention. The method can be executed by a fast focusing device. The device can be implemented by software and / or hardware, and can be built in as a part of the mobile device Inside the mobile device. This embodiment is applicable to the situation that the current frame and any focused frame are not the same frame. Such as Figure 5 As shown, the implementation process includes:

[0057] Step 31. When focusing on any focused frame, the focused frame is divided into multiple areas in advance, and when focusing on one of the areas in the focused frame, the processor counts each area in the focused frame The focus value in .

[0058] For example, when focusing on any area in the focused frame, the processor will not only count the focus value in this area, but also count the focus values ​​in other areas in the focused frame.

[0059] Step 32: Deter...

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Abstract

The invention relates to the technical field of mobile communication, in particular to a method, a device and a mobile device for rapidly focusing. The method for rapidly focusing includes: confirming a target focusing area in a current frame obtained by a camera according to operation of a user; if the target focusing area exists in at least one focused frame, performing focusing for the target focusing area according to focusing value of the at least one focused frame obtained in advance. The focusing value of each area in the at least one focused frame is obtained in advance. The method for rapidly focusing greatly decreases the frame number of images required for running during the focusing process, and thereby improves focusing efficiency.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of mobile communications, and in particular, to a method, device and mobile device for fast focusing. Background technique [0002] With the rapid development of various electronic devices such as smart mobile devices (for example, smart phones), electronic devices have been widely used in various fields of life and work, and camera functions have also become common functions of electronic devices. [0003] At present, most of the focusing methods of cameras in mobile devices use contrast focusing, that is, to judge whether the image is clear by counting the image contrast value in the focusing area. Among them, the clearer the image, the more excessive the edge of the object and the background signal. Faster, the greater the contrast. [0004] The focusing process in the existing focusing method is to continuously count the focus value of each frame in the focus area during the proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232
CPCH04M2250/52H04M1/724H04N23/67
Inventor 唐城
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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