Automatic control method and device of camera head

Abstract

The invention discloses an automatic control method and device of a camera head, is applied to the technical field of image collection, and is used for solving the stable imaging problems of the bayonet system and the like to a characteristic target area in the intelligent traffic field. The method comprises the steps as follows: setting the initial range values of the background brightness, the foreground target brightness and the object brightness according to experience or scene requirements; extracting the foreground target in the region to be detected, and calculating the brightness value of the foreground target; locating the target in the region to be detected by adopting the target location technology, and calculating the brightness value of the target; detecting the target area and panoramic picture according to the brightness value of the foreground target, and calculating the background brightness value; and obtaining a camera head control coefficient according to the foreground target brightness value, the background brightness value and the target brightness value, and selecting a camera control mode and a brightness control mode to control the automatic exposure and gain of the camera head. According to the embodiment of the invention, the target in the region to be determined can be clearly and effectively imaged, and the visual effect of the panorama is simultaneously considered.

Description

technical field [0001] The invention relates to the technical field of image acquisition, in particular to a camera automatic control method and device. Background technique [0002] Camera automatic exposure control mainly refers to the process of optimizing image brightness by controlling exposure based on human subjective vision; automatic gain control is to increase the signal strength by amplifying the signal-to-noise ratio of the scene. In the process of taking pictures, if the exposure is underexposed, the image will be very dark, and if the exposure is overexposed, the image will be too white. [0003] For example, in the field of intelligent transportation, such as figure 1 As shown, due to the underexposure of the pedestrian area and the body area, the face and the license plate are blurred, while the figure 2 As shown in Fig. 1, the overexposure of the body area, which does not properly expose the specific target area, makes the brightness of the target area to...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the embodiment of the present invention is to solve the problem that the traditional camera control method cannot clearly image a specific target, and propose a new camera automatic control method and device to solve the problem of bayonet systems, electronic police systems, and smart cameras in the field of intelligent transportation. Analyze the problem of all-weather stable imaging of characteristic target areas by the analysis system or other related systems, so as to achieve clear and effective imaging of targets in specific areas, and at the same time take into account the visual effect of the panorama

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