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Focusing method and mobile terminal

A focusing method and mobile terminal technology, applied in the field of communication, can solve problems such as power consumption and time consumption, and achieve the effect of improving focusing speed and user experience.

Active Publication Date: 2016-08-03
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a focusing method and a mobile terminal to solve the problems of time-consuming and power consumption caused by moving the position of the motor multiple times in the focusing method of the prior art

Method used

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  • Focusing method and mobile terminal

Examples

Experimental program
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Effect test

no. 1 example

[0028] Such as figure 1 As shown, the first embodiment of the present invention provides a focusing method, which is applied to a mobile terminal. The mobile terminal includes a camera module, and the camera module includes a motor for focusing. The focusing method includes:

[0029] Step 101, acquire and save the target pixel size and motor position each time the focus is completed.

[0030] In this step, when the focus is completed, that is, when the photo is taken successfully, after the camera module is turned on, the camera of the camera module will start. A focus area is determined, and a focus target is determined from the focus area; the focus target may be any object in the focus area, such as a human face, a car, etc., which is not specifically limited herein. After the focus target is determined, the focus is achieved through automatic center area focus or manual touch focus. After the focus is completed and the photo is successfully taken, the target pixel size of...

no. 2 example

[0061] Such as figure 2 As shown, the second embodiment of the present invention provides a focusing method, which is applied to a mobile terminal. The mobile terminal includes a camera module, and the camera module includes a motor for focusing. The second embodiment is applied to The number of data pairs of the saved target pixel size and motor position is less than the number N of unknowns of the function to be fitted, or the second embodiment is applied to the case where the fitting function is not needed only based on the saved target pixel size and motor position. Get the situation of the calculated position of the first motor.

[0062] Specifically, the focusing method described in the second embodiment of the present invention includes:

[0063] Step 201, acquire and save the target pixel size and motor position each time the focus is completed.

[0064] In this step, when the focus is completed, that is, when the photo is taken successfully, after the camera module...

no. 3 example

[0110] Such as image 3 As shown, the third embodiment of the present invention provides a mobile terminal 300, including a camera module, the camera module includes a motor for focusing, and the mobile terminal 300 includes:

[0111] The processing module 301 is configured to obtain and save the target pixel size and motor position each time the focus is completed.

[0112] The fitting module 302 is used to perform a fitting operation using a preset algorithm according to the target pixel size and the motor position at each focus saved by the processing module 301 to generate a matching relationship function between the motor position and the target pixel size.

[0113] An acquisition module 303, configured to acquire the first target pixel size of the next focus.

[0114] The calculation module 304 is configured to calculate, according to the matching relation function generated by the fitting module 302 , a calculated position of the first motor that matches the obtained f...

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Abstract

The present invention provides a focusing method. The focusing method comprises the steps of obtaining the size of a target pixel and the position of a motor after the completion of each focusing process, storing the obtained information, generating a matching relation function between the position of the motor and the size of the target pixel according to the size of the target pixel and the position of the motor, obtaining the size of a first target pixel during the next focusing process, calculating to obtain a calculated position of a first motor matched with the size of the first target pixel according to the matching relation function, adjusting the position of the motor according to the calculated position of the first motor, and completing the current focusing process. The present invention also provides a corresponding mobile terminal. According to the focusing method, the matching relation function between the position of the motor and the size of the target pixel is simulated and generated based on the size of the target pixel and the position of the motor. Therefore, the calculated position of the first motor can be directly obtained during the next focusing process based on the matching relation function. Meanwhile, the focusing speed for photographing the same target object or the same object is improved. Moreover, the user experience is improved.

Description

technical field [0001] The present invention relates to the technical field of communication, and more specifically, to a focusing method and a mobile terminal. Background technique [0002] At present, mobile cameras are more and more pursuing the ultimate user experience in taking photos, and fast snapping and moving object shooting are extremely common scenes. [0003] After the current mobile terminal camera is turned on, as the shooting scene changes, the focusing process is very frequent and the focusing speed is low. The existing technology generally adopts a contrast-based focusing method, which needs to search for the best focusing time in the entire motor travel space. The position of the motor needs to be repeatedly tried to move the motor position and calculate the contrast of the image sampling point, which consumes a lot of time and power; another widely used phase-based focusing method (PhaseDetectionAutoFocus, PDAF) has If the image quality is damaged and ca...

Claims

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Application Information

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IPC IPC(8): H04N5/232
Inventor 张新远
Owner VIVO MOBILE COMM CO LTD
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