Multi-camera automatic calibration method and system, monitoring method and system

Abstract

The present application belongs to the technical field of video surveillance, and in particular relates to a multi-camera automatic calibration method and system, and a multi-camera collaborative monitoring method and system. The multi-camera automatic calibration method includes the following steps: obtaining first image information of a designated area; constructing a visual map of the designated area according to the first image information; obtaining a plurality of second image information captured by a plurality of cameras to be calibrated, and combining multiple The second image information is matched with the feature points of the visual map one by one; according to the matching results, the pose information and predetermined parameter information of each camera to be calibrated are obtained one by one, and then each camera to be calibrated is calibrated one by one according to the pose information and predetermined parameter information . The multi-camera automatic calibration method and system, monitoring method and system of the present application can solve the shortcomings of existing camera calibration methods such as high complexity and low universality, and realize a method that can be completed only by operating a single camera. Semi-automatic multi-camera self-calibration method.

Description

technical field [0001] The present application belongs to the technical field of video surveillance, and in particular relates to a multi-camera automatic calibration method and system, and a multi-camera collaborative monitoring method and system. Background technique [0002] As the economic environment, political environment, and social environment change and become increasingly complex, the demand for security in various industries continues to increase, and at the same time, higher requirements are put forward for the applicability, flexibility, and humanization of security technology. As the most direct and effective system integration solution, video surveillance system has also become the hottest research direction in scientific research and industrial fields in recent years. In recent years, security solutions that use cameras as input have quickly occupied a favorable position in the market due to their excellent features such as high performance, high convenience,...

AI Technical Summary

Problems solved by technology

[0005] The traditional calibration method is to use the known scene structure information for calibration, which usually involves a complicated calibration process and high-precision known calibration information, requiring complex operations by professionals

Moreover, every time the position of the camera group is changed, a recalibration operation is required

[0006] The method of active vision camera calibration is to know the motion information of some cameras, and obtain the calibration result by solving the motion equation. This method cannot be applied to occasions where the camera motion is unknown and uncontrollable

[0007] The camera self-calibration algorithm relies on the correspondence between multiple images for calibration. This method only needs to establish the relationship between the images to complete the camera calibration; however, this method belongs to nonlinear calibration and is not robust.

Images