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Exposure method and mobile terminal

A mobile terminal and exposure method technology, applied in the communication field, can solve the problems of uneven exposure, inability to obtain the best exposure value, and slow exposure speed, etc.

Active Publication Date: 2016-11-30
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention proposes an exposure method and a mobile terminal to solve the problem that the target camera cannot obtain the optimal exposure value in real time according to the change of the ambient brightness, and needs to gradually increase or decrease from the current exposure value to reach the optimal exposure value, reducing the Solved the problem of exposure speed and uneven exposure

Method used

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Experimental program
Comparison scheme
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Embodiment 1

[0037] figure 1 It is a flowchart of an exposure method in Embodiment 1 of the present invention.

[0038] refer to figure 1 As shown, an exposure method of the present invention is applied to a mobile terminal, the mobile terminal includes a main camera and at least two auxiliary cameras, and the method includes:

[0039] Step 101, acquiring the exposure value of each camera in the main camera and at least two auxiliary cameras.

[0040] In the embodiment of the present invention, the mobile terminal is provided with a main camera and at least two auxiliary cameras, and the configurations of the main camera and the at least two auxiliary cameras may be the same, that is, the main camera and the at least two auxiliary cameras may have the same aperture and focal length , maximum exposure value, minimum exposure value, etc., the main camera can be a camera that outputs a preview image or finally outputs a captured image when the mobile terminal is shooting, and the auxiliary ...

Embodiment 2

[0051] figure 2 It is a flowchart of an exposure method in Embodiment 2 of the present invention.

[0052] refer to figure 2 As shown, an exposure method of the present invention is applied to a mobile terminal. The mobile terminal includes a main camera and at least two auxiliary cameras. The method includes:

[0053] Step 201, initialize the exposure value of each camera in the main camera and at least two auxiliary cameras.

[0054] In the embodiment of the present invention, the mobile terminal may include a main camera and at least two auxiliary cameras. In order to obtain images with different brightness values, the main camera and the at least two auxiliary cameras may be set to have different exposure values, as a method of the present invention. Preferred embodiment, according to the formula Initialize the exposure value of each camera in the main camera and at least two auxiliary cameras in turn; where, exp min is the minimum exposure value of the camera, exp ...

Embodiment 3

[0082] image 3 It is a flow chart of an exposure method in Embodiment 3 of the present invention.

[0083] refer to image 3 As shown, an exposure method according to an embodiment of the present invention is applied to a mobile terminal. The mobile terminal includes a main camera and at least two auxiliary cameras. The method includes:

[0084] Step 301, initializing the exposure value of each camera in the main camera and at least two auxiliary cameras.

[0085] In the embodiment of the present invention, the main camera and at least two auxiliary cameras can be set to have different exposure values. As a preferred embodiment of the present invention, the exposure value of each camera in the main camera and at least two auxiliary cameras can be initialized by This is achieved in the following ways:

[0086] First, the at least two auxiliary cameras are divided into a first group of cameras and a second group of cameras.

[0087]In the embodiment of the present invention...

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Abstract

The invention discloses an exposure method and a mobile terminal. The mobile terminal comprises a main camera and at least two auxiliary cameras. The exposure method comprises steps that an exposure value of each of the main camera and the two auxiliary cameras and an image brightness value of an image acquire by each of the main camera and the two auxiliary cameras are acquired, and therefore N image brightness values are acquired; based on the N image brightness values and a preset target brightness value, a target camera is determined, and a target exposure value is calculated according to the image brightness value and the exposure value of the target camera and the preset target brightness value; the exposure value of the next frame image of the main camera is set to be a target exposure value. By adopting the embodiment of the invention, the main camera is capable of quickly acquiring the target exposure value in a real-time way according to environment changes, and therefore an optimal exposure strategy of reaching the target exposure value is found accurately and quickly according to the target exposure value, the faster and smoother exposure is realized, and shooting experience of users is improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an exposure method and a mobile terminal. Background technique [0002] With the development of electronic technology, a mobile terminal with a camera can be used to take photos anytime and anywhere, and the photos taken can be shared in real time through the mobile network. [0003] During the shooting process of the camera of the mobile terminal, the camera adjusts the exposure value of the camera in real time according to the current shooting environment, so that the captured image reaches a suitable brightness, so that the image can achieve the best shooting effect. At present, the image sensor of the camera is to capture images under the current exposure value, use the brightness of the current image to judge whether the current exposure value is appropriate, and then set the exposure value of the next frame according to the current image brightness and exposure value...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225H04N5/235
CPCH04N23/57H04N23/741
Inventor 杨庆
Owner VIVO MOBILE COMM CO LTD
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