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Automatic exposure control method and device

A technology of automatic exposure and control method, which is applied in the field of image processing and can solve the problems of dark ground targets, insufficient exposure of ground targets, and inability to see clearly.

Pending Publication Date: 2022-03-04
BRIGATES MICROELECTRONICS KUNSHAN
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the brightness of the sky is much higher than the brightness of the ground, the ground target will be underexposed, making the ground target too dark to see clearly

Method used

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  • Automatic exposure control method and device
  • Automatic exposure control method and device
  • Automatic exposure control method and device

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Embodiment Construction

[0042] As mentioned in the background art, it is necessary to provide a solution to enable the camera to automatically distinguish between the sky and the ground, and then use automatic exposure control to help see the ground target clearly.

[0043] Specifically, the existing automatic exposure control (Automatic Exposure Control, referred to as AEC) technology divides the screen into multiple areas, and sets different weights for each area according to the scene. Situations, such as paragliding, flying wings and other extreme sports often occur in the air.

[0044] The technical solution of the present invention provides an automatic exposure control method and device, by dividing the initial image to obtain several sub-regions, and assigning a first weight to each sub-region according to the positional relationship between each sub-region and the boundary line. When weight distribution is performed on each sub-area, the first weight associated with the positional relationsh...

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Abstract

The invention discloses an automatic exposure control method and device, and the method comprises the steps: obtaining an initial image which comprises a first region, a second region and a boundary between the first region and the second region; dividing the initial image into a plurality of sub-regions; according to the position relationship between each sub-region and the boundary, distributing a first weight to each sub-region; obtaining an automatic exposure statistical value according to the pixel value of each sub-region and the first weight allocated to each sub-region; and adjusting exposure according to the difference between the automatic exposure statistical value and a preset value. According to the method, dark ground area targets can be seen clearly.

Description

technical field [0001] The invention relates to the field of image processing, in particular to an automatic exposure control method and device. Background technique [0002] For cameras used in extreme sports in the air, such as those used in paragliding, flying wings and other projects, it is often encountered that the scene contains the sky, the ground and the horizon at the same time. For safety reasons, the camera needs to see the targets on the ground clearly so as to assist the athletes to adjust their direction. However, when the brightness of the sky is much higher than that of the ground, the ground target will be underexposed, making the ground target too dark to be seen clearly. [0003] Therefore, it is necessary to provide a solution to enable the camera to automatically distinguish between the sky and the ground, and then use automatic exposure control to help see the ground target clearly. Contents of the invention [0004] The technical problem to be sol...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T5/00
CPCG06T7/0002G06T2207/10004G06T5/90
Inventor 池国泉陈炜
Owner BRIGATES MICROELECTRONICS KUNSHAN
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