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Automatic focusing method and system of mobile terminal

A mobile terminal and auto-focus technology, which is applied to TV system components, TVs, instruments, etc., can solve problems such as easy focus on the background, small focus objects, and instant loss of feeling, so as to improve the composition experience and playability , Accurate focus, and improve user experience

Active Publication Date: 2014-12-24
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The focus methods of mobile phone photography mainly include auto focus and manual focus; there is also a recently popular scheme of first taking pictures and then focusing. There are two ways to achieve first taking pictures and then focusing. The first is to implement directly on the hardware, which has some limitations in terms of cost and implementation.
Although the focusing speed is getting faster and faster now, there are still some problems in actual shooting. For example, when shooting a moving object, if you want to put the moving object in a specific position when composing the picture, you need to manually focus first, and then take a photo. A simple action such as manual focus loses a moment of feeling; the focus object is relatively small, and it is easier to focus on the background through manual focus; some scenes such as paying more attention to a certain detail of the object may require several manual focus to achieve ideal effect

Method used

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  • Automatic focusing method and system of mobile terminal

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Method flow chart of the present invention is as figure 1 As shown, a mobile terminal autofocus method includes the following steps:

[0054] Step 1 of the present invention is: setting a floating focus window, the shape, size and position of the floating focus window are adjusted by recognizing the adjustment command input by the user, and floating on the camera preview interface.

[0055]In the present invention, the shape of the floating focus window can be set in various shapes, such as circle, ellipse, square, rectangle, irregular figure, etc., which can be set according to the needs of the user. The user selects the shape of the floating focus window through the menu bar, Of course, the method for changing the shape of the floating focus window in the present invention is not limited thereto. For example, the shape of the window can also be changed by touching the window boundary, dragging a point on the boundary, or dragging a straight line on the boundary, such ...

Embodiment 2

[0099] Different from Embodiment 1, Embodiment 2 discloses a method for realizing user input adjustment instructions by moving a human face (which can be realized by an infrared sensor or face recognition). details as follows:

[0100] The adjustment instruction input by the user described in step 1 is obtained by capturing the user's facial movement, specifically:

[0101] S3 captures the motion track direction of the user's face, and moves the position of the floating focus window according to the up, down, left, and right motion track directions of the corresponding user's face;

[0102] S4 captures the movement track direction of the user's face, and adjusts the size of the floating focus window according to the approaching or moving away of the corresponding user's face; if the floating focus window is close, the floating focus window will be reduced, and if it is far away from the floating focus window, the floating focus window will be enlarged.

[0103] The acquisitio...

Embodiment 3

[0113] Different from Embodiments 1 and 2, Embodiment 2 discloses a method for implementing user input adjustment instructions by moving the user's gesture (which can be realized through an infrared sensor or a camera). details as follows:

[0114] The adjustment instruction input by the user described in step 1 is obtained by capturing user gestures, specifically:

[0115] S5 captures the motion track direction of the user's gesture action, and moves the position of the floating focus window according to the up, down, left, and right motion track directions of the corresponding user's gesture action;

[0116] S6 captures the direction of the trajectory of the user's gestures, and adjusts the size of the floating focus window according to the approaching or moving away of the corresponding user's gestures; when approaching the floating focus window, the floating focus window is reduced, and when moving away from the floating focus window, the floating focus window is enlarged....

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PUM

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Abstract

The invention relates to an automatic focusing method and system of a mobile terminal. The automatic focusing method includes the steps of (1) arranging a floating focusing window, wherein the shape, the size and the position of the floating focusing window are adjusted by identifying an adjustment command input by a user, and the floating focusing window floats on a camera preview interface; (2) detecting whether the camera preview interface of the mobile terminal is opened or not in real time, calling the floating focusing window to be displayed on the camera preview interface when it is detected that the camera preview interface is opened; (3) obtaining the adjustment command input by the user, adjusting the floating focusing window according to the adjustment command input by the user, and conducting real-time focusing while the floating focusing window is adjusted; (4) taking pictures after focusing is finished. The shape, the size and the position of the floating focusing window are dynamically adjusted, real-time focusing is carried out on pictures in the floating focusing window at the same time, manual focusing during picture composition is avoided, focusing and picture taking for small objects are rapidly and accurately finished, focusing for certain details of objects is accurately achieved particularly, and user experiences are improved.

Description

technical field [0001] The present invention relates to autofocus technology, in particular to an autofocus method and system for a mobile terminal. Background technique [0002] With the improvement of the camera capability of smartphones, mobile terminal products, such as mobile phone cameras, are becoming more and more important. The focus methods of mobile phone photography mainly include auto focus and manual focus; there is also a recently popular scheme of first taking pictures and then focusing. There are two ways to achieve first taking pictures and then focusing. The first is to implement directly on the hardware, which has some limitations in terms of cost and implementation. Although the focusing speed is getting faster and faster now, there are still some problems in actual shooting. For example, when shooting a moving object, if you want to put the moving object in a specific position when composing the picture, you need to manually focus first, and then take ...

Claims

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Application Information

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IPC IPC(8): H04N5/232G06F3/0481G06F3/0485
Inventor 任永忠
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD