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Automatic exposure method and device

A technology of automatic exposure and area, which can be used in color TV parts, TV system parts, TVs, etc., and can solve problems such as overexposure

Active Publication Date: 2016-01-06
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method and device for automatic exposure to solve the technical problem of overexposure in existing smart terminals

Method used

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  • Automatic exposure method and device

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Experimental program
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Embodiment 1

[0060] This embodiment will be described from the perspective of a terminal, and the automatic exposure method of the present invention can be implemented by a device with a shooting function such as a terminal.

[0061] see figure 1 , figure 1 It is a schematic flowchart of an automatic exposure method provided by Embodiment 1 of the present invention. The automatic exposure method includes the steps of:

[0062] Step S100, triggering the terminal to form a preview image of the object to be photographed in the image preview area.

[0063] In this embodiment, the image preview area is an area for displaying a preview image. For example, after the user turns on the shooting function of the terminal, the area where the preview image is displayed on the shooting interface is the image preview area.

[0064] In this embodiment, the preview image is the image of the object to be photographed displayed in the image preview area of ​​the terminal before exposure. The image of the...

Embodiment 2

[0095] According to the method described in Embodiment 1, an example will be given below for further description.

[0096] In this embodiment, the application of the method in Embodiment 1 to a smart terminal is taken as an example for further description.

[0097] see figure 2 ,, figure 2 It is a schematic flowchart of an automatic exposure method provided in Embodiment 2 of the present invention. The automatic exposure method includes the following steps:

[0098] In step S201, the smart terminal triggers the formation of a preview image of an object to be photographed in an image preview area.

[0099] For example, when the user turns on the camera function of the smart terminal to take pictures of the scenery, first the smart terminal runs the camera application, calls the camera of the smart terminal to take pictures of the scenery, and displays a preview image of the scenery in the image preview area on the screen.

[0100] Of course, the step of triggering the pre...

Embodiment 3

[0130] see image 3 , image 3 It is a schematic structural diagram of an automatic exposure device provided in Embodiment 3 of the present invention. The automatic exposure device includes:

[0131] A trigger module 301, configured to trigger the terminal to form a preview image of the object to be photographed in the image preview area;

[0132] A key photometric area generation module 302, configured to form a key photometric area containing only the main object in the image preview area after determining the main object of the preview image;

[0133] A light metering module 303, configured to measure light on the key light metering area to obtain brightness information of the light metering area;

[0134]The exposure module 304 is configured to perform exposure according to the brightness information.

[0135] Preferably, refer to Figure 4 In this embodiment, the key photometry area generation module 302 specifically includes:

[0136] A key photometric area adjustm...

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Abstract

The invention provides an automatic exposure method and device. The automatic exposure method comprises the following steps: firstly, determining a main body object in a preview image; and then, forming a key photometry area only including the main body object in a preview image area. Through adoption of the automatic exposure method and device, an accuracy of brightness measurement in the key photometry area is increased during photometry in the key photometry area, so that brightness convergence in a converging process becomes more accurate; overexposure of an intelligent terminal is avoided; and better shooting experience is brought to a user.

Description

technical field [0001] The present invention relates to the technical field of terminals, in particular to an automatic exposure method and device. Background technique [0002] With the popularity of smart terminals, more and more users use smart terminals for learning, entertainment, etc., which not only enriches users' lives, but also brings convenience to users. [0003] Now with the continuous development of smart terminals, more and more camera functions can completely replace SLR and other professional cameras to some extent. More and more people like to use smart terminals to take pictures or video. However, at present, the scene will be over-exposed during the shooting process of the smart terminal, and the over-exposure will greatly affect the photographing effect. At present, the main reason for the overexposure of the scene is: because the AE (Automatic Exposure, automatic exposure) frame is too large, it will also frame the objects around the subject object, re...

Claims

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Application Information

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IPC IPC(8): H04N5/235
Inventor 李小朋
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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