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Exposure ratio automatic adjustment method and device

An automatic adjustment and exposure ratio technology, applied in the field of image processing, can solve the problems of not being able to adapt to the scene, not being able to automatically adjust the wide dynamic mode, not being able to adapt to the dynamic range of long corridors, etc.

Active Publication Date: 2021-06-22
ZHEJIANG UNIVIEW TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to different scenes, the dynamic range varies greatly. If the wide dynamic mode of the camera cannot be automatically adjusted, it cannot adapt to all scenes.
For example, wide dynamic mode can solve the dynamic range of the hall, but it can't adapt to the dynamic range of long corridors well; and vice versa

Method used

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  • Exposure ratio automatic adjustment method and device
  • Exposure ratio automatic adjustment method and device
  • Exposure ratio automatic adjustment method and device

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0029] It should be noted that like numerals and let...

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Abstract

The invention provides an exposure ratio automatic adjustment method and device. The method includes: acquiring multiple frames of images, and selecting a first image and a second image from the multiple frames of images, wherein the exposure time length of the first image is longer than the exposure time length of the second image; obtaining the second image of the first image a brightness and a third brightness of the second image; judging whether to adjust the actual exposure ratio according to the first brightness and the third brightness, and if so, adjusting the actual exposure ratio according to a preset adjustment value. In this way, the actual exposure ratio can be automatically adjusted according to the dynamic range and lighting conditions of the actual scene, and the adjustment can be made according to the preset adjustment value to ensure that the picture will not change abruptly.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an exposure ratio automatic adjustment method and device. Background technique [0002] In the application of surveillance cameras, the surveillance scenes vary greatly. Many scenes have a large dynamic range, and wide dynamic range needs to be enabled. However, due to the difference in the scene, the dynamic range varies greatly. If the wide dynamic mode of the camera cannot be automatically adjusted, it cannot adapt to all the scenes. For example, the wide dynamic mode can solve the dynamic range of the hall, but can not adapt to the dynamic range of the long corridor; and vice versa. Contents of the invention [0003] In order to overcome the above-mentioned deficiencies in the prior art, the purpose of the embodiments of the present invention is to provide a method and device for automatically adjusting the exposure ratio, which can automatically adjust th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/235
CPCH04N23/71H04N23/73
Inventor 张文萍徐琼
Owner ZHEJIANG UNIVIEW TECH CO LTD
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