Method and device for automatic control of local light input amount of intelligent traffic camera

Abstract

The invention relates to an intelligent traffic camera, and discloses a method and a device for automatically controlling local lighting amount of the intelligent traffic camera. The intelligent traffic camera comprises a filter set, wherein the filter set comprises a first filter and a second filter; the first filter is located above the second filter; the transmission rate of the first filter is smaller than the transmission rate of the second filter. The method for automatically controlling the local lighting amount of the intelligent traffic camera comprises the following step of when the lighting intensity of the scene of a current video frame is judged to be lower than a threshold value, moving the filter set, so that the first filter and the second filter respectively cover one part of area of the whole scene, and the first filter covers the area where traffic lights are located. The filter set is controlled to move to the appropriate position according to different scene modes, and when other modes are switched to the low-light scene mode, the lighting amount of the traffic light area is limited, and the aim of avoiding overexposure of red lights is achieved, so that the problem that the red lights are a little yellow is avoided.

Description

technical field [0001] The invention relates to an intelligent traffic camera, in particular to a method and a device for automatically controlling the local light input amount of the intelligent traffic camera. Background technique [0002] With the rapid increase of the number of vehicles in all countries in the world, people pay more and more attention to traffic conditions. Social problems such as traffic congestion, traffic accidents, energy consumption and environmental pollution are getting worse day by day. How to effectively manage traffic has increasingly become the focus of governments and relevant departments around the world. [0003] With the rapid development of video technology and the double increase of computer computing speed, the realization of traffic monitoring system based on computer video detection technology has become possible. In all-weather practical applications of existing intelligent traffic cameras, due to the large variation in light 24 hou...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a method and device for automatic control of the local light input of an intelligent traffic camera. When the ambient brightness changes, the filter group is controlled to move to a suitable position according to different scene modes, which solves the problems in the prior art. The problem of yellowish red light in the captured picture, and the problem of scene overexposure or vehicle overexposure under the condition of forward and reverse light

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