A day and night mode switching control method and device applied to a fog-penetrating camera

A mode switching and camera technology, applied in the field of image processing, can solve problems such as differences in optical design

Active Publication Date: 2021-08-27
ZHEJIANG DAHUA TECH CO LTD
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Problems solved by technology

[0003] There is a big difference in optical design between conventional cameras and fog-penetrating cameras

Method used

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  • A day and night mode switching control method and device applied to a fog-penetrating camera
  • A day and night mode switching control method and device applied to a fog-penetrating camera
  • A day and night mode switching control method and device applied to a fog-penetrating camera

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Embodiment Construction

[0053] In order to make the purpose, technical solutions and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the application, not all of them. . Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0054] In extreme weather with low visibility (such as rainy days, heavy fog, and haze), due to the production principle of the fog-penetrating camera, the fog-penetrating camera filters out most of the invalid visible light bands, and retains the infrared light bands with relatively strong fog-penetrating ability. If the day and night mode switching control method of conventional cameras is adopted, transparent and clear images cannot be obtained.

[0055] The embo...

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Abstract

The present application provides a day and night mode switching control method and device applied to a fog penetration camera. The method includes: obtaining the current automatic exposure AE information and the RGB statistical data of each image block in the image captured by the fog penetration camera; determining the current ambient brightness according to the AE information, and determining the current RGB data according to the RGB statistical data of the image block Discrete degree of distribution: According to the comparison result between the current ambient brightness and the ambient brightness threshold, and the comparison result between the current RGB data distribution discrete degree and the RGB data distribution discrete degree threshold, switch the day and night modes of the fog-penetrating camera . This method can improve the stability of the day-night mode switching of the fog-penetrating camera or reduce the occurrence of false cuts.

Description

technical field [0001] The present application relates to the technical field of image processing, and in particular to a day-night mode switching control method and device applied to a fog-penetrating camera. Background technique [0002] With the continuous development of video surveillance technology, the requirements for the performance of video surveillance and the complexity of application scenarios are getting higher and higher, and cameras with fog penetration functions have emerged as the times require and are more and more widely used. Common fog penetration cameras are black and white fog penetration cameras, but with the development of multi-spectral fusion product technology, there are also color fog penetration cameras. Fog-penetrating cameras are mainly used in extreme weather with low visibility (such as rainy days, heavy fog, and smog) to improve the quality of monitoring images and make the images transparent and clear. [0003] There is a big difference i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232H04N5/235
CPCH04N23/64H04N23/667H04N23/71H04N23/73
Inventor 单海婧李俊英况璐
Owner ZHEJIANG DAHUA TECH CO LTD
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