Fill light lamp automatic control method based on video analysis

Abstract

The invention discloses a fill light lamp automatic control method based on video analysis. The fill light lamp automatic control method based on the video analysis achieves the automatic control over a fill light lamp according to the changing of brightness values in a monitoring area. The fill light lamp automatic control method based on the video analysis achieves the self-adaptive control over the fill light lamp according to the changing of ambient brightness, avoids electric energy waste and light pollution to the environment by the fill light lamp, avoids the phenomena that the definition of monitoring video images declines due to insufficient light and the fill light lamp may flicker, saves equipment investment, shortens mounting construction cycles, and improves the reliability of system working.

Description

[0001] technical field [0002] The invention relates to the technical field of a supplementary light in a video surveillance area, in particular to an automatic control method for a supplementary light based on video analysis. Background technique [0003] With the development of society and economy, the application of video surveillance system is becoming more and more popular in the fields of social security prevention and road traffic management. The video surveillance area provides lighting, and the fill light becomes an important part of the video surveillance system. There are two ways to control the fill light in the video surveillance system. One is the fixed time method, that is, the fill light is turned on or off at the time preset by the system; the other is to use a photosensitive sensor to detect the ambient light and turn it on when the light is insufficient. Fill light, turn off the fill light when the light is sufficient. [0004] The fixed time method can...

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Problems solved by technology

[0004] The fixed time method cannot meet the need for supplementary light in sudden changes in weather conditions, such as the darkness caused by dark clouds before the rainstorm; and due to the alternation of climate, the time of daylight and dark in a place is different every day, and the fixed time method is prone to open If the supplementary light is too late, it will affect the video surveillance system to collect clear images, or if the supplementary light is turned on too early, it will cause unnecessary loss of electric energy and bring environmental light pollution

[0005] The photosensitive sensor method can effectively make up for the deficiency of the fixed time method, but most photosensitive sensors are not installed in the video surveillance area, and cannot accurately reflect the brightness of the monitored area. It causes a huge waste of electric energy and brings additional light pollution to the environment.

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