Video monitoring system with single window and double channels

Abstract

The invention relates to a video monitoring system with a single window and double channels. The video monitoring system with the single window and the double channels is used for monitoring the temperature field distribution of a target in real time and accurately positioning an alarm point. The video monitoring system with the single window and the double channels mainly comprises a bi-color light splitting piece, an infrared imaging channel, a visible light imaging channel, an image registration and fusion module and an image display and early warning module, wherein the bi-color light splitting piece divides a light source form the target into a visible channel and a long-wave infrared channel, image acquisition devices of the two channels are used for acquiring images, an image processing module is used for processing and registration of images of the two channels, and the image display and early warning module displays the images of the two channels and the ratification effect and carries out early warning according to a preset mode. According to the video monitoring system with the single window and the double channels, due to the fact that a visible light image acquisition module is arranged on a multi-dimension adjusting mechanism, the optical axis of an imaging system can be adjusted accurately to enable the optical axes of two sets of imaging optical paths to be identical, and the process of image registration and fusion is simplified.

Description

technical field [0001] The invention relates to a single-window dual-channel video surveillance system. Background technique [0002] Thermal imaging monitoring is an emerging monitoring technology, which not only obtains the two-dimensional temperature field distribution of the target in real time, but also has functions such as target identification and temperature warning. However, due to the low definition and resolution of infrared images, it is not conducive to target recognition, positioning, tracking and discrimination of human eyes. Visible light images can provide high-definition and high-resolution target images, which have incomparable advantages over infrared images. Combining infrared thermal imaging and visible light imaging, both the temperature field distribution of the target and the high-resolution target background image can be obtained. The traditional visible / infrared dual-channel imaging is placed side by side. The optical axes of the two channels ha...

AI Technical Summary

Problems solved by technology

The traditional visible / infrared dual-channel imaging is placed side by side. The optical axes of the two channels have a certain distance, and the collected images are quite different. The image registration and fusion process cannot obtain ideal results, and there is a mismatch. The problem

[0003] There are also coaxial visible / infrared dual-channel imaging solutions in the prior art. For example, Chinese patent application No. 201110234968.7 discloses a dual-channel imaging infrared thermal imager, but does not adjust the optical axis. High requirements, it is difficult to ensure high-precision coincidence of optical axes during the assembly process of the system, which will have an adverse effect on image registration, requiring complex image processing processes such as image correction and feature extraction

At the same time, it adopts coating technology to split light to obtain coaxial visible / infrared dual-channel imaging images. The color separation filter uses germanium as a commonly used coating substrate, YbF3 as a low refractive index film material, and ZnS as a high refractive index film. Material; due to the defects of the coating material itself, the spectroscopic technology realized by the coating cannot be used outdoors with complex environmental conditions, and due to the limitation of the coating process, it is difficult to achieve a large viewing angle

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