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Exposure control method and device

A technology of exposure control and exposure parameters, which is applied in the parts and electrical components of TVs and color TVs.

Inactive Publication Date: 2016-05-25
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This can result in poor exposure when the photo is taken by the rear camera, reducing the quality of the photo

Method used

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  • Exposure control method and device

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Embodiment

[0057] Firstly, the light intensity values ​​obtained by the ambient light sensor and the color sensor (RGB sensor) are calibrated, so that the light intensity values ​​obtained by the two sensors are close under the uniform light box in the laboratory. The calibration process is usually to multiply the partitions by a predetermined coefficient to reduce the difference between the devices (the ambient light sensor and the color sensor).

[0058] Secondly, after calibration, when the user takes photos with the front camera, read the light intensity value of the ambient light sensor (the first brightness value), and when the user takes photos with the rear camera, read the light of the RGB sensor. Intensity value (the second brightness value). Therefore, when the camera (the user equipment) is exposed, it has an accurate ambient light parameter, and then a good effect can be taken.

[0059] Through the above technical solution, the present invention can perform exposure according to...

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Abstract

The invention discloses an exposure control method and device. The exposure control method comprises the following steps of A, obtaining a brightness value of ambient light of a scene which corresponds to an opened camera of user equipment; B, setting an exposure parameter based on the brightness value; and C, controlling exposure of the user equipment based on the exposure parameter. According to the exposure control method and device, exposure can be carried out based on the brightness of the light of the shot scene, the phenomenon of poor exposure can be avoided, and shooting effect of photos is accordingly improved.

Description

Technical field [0001] The invention belongs to the technical field of exposure control, and in particular relates to an exposure control method and device. Background technique [0002] Traditional user equipment (for example, mobile phones) are generally provided with two cameras, including a front camera and a rear camera. [0003] The front camera and the rear camera are respectively used for shooting photos of different scenes. [0004] In practice, the inventor found that the prior art has at least the following technical problems: [0005] When the front camera or the rear camera takes a photo, the ambient light brightness value sensed by the ambient light sensor is generally used to assist the exposure. The ambient light sensor and the front camera are generally arranged on the same surface of the user equipment. [0006] However, the brightness of the light of the scene corresponding to the front camera is different from the brightness of the light of the scene corresponding ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225H04N5/235
CPCH04N23/57H04N23/71
Inventor 张强
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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