Elevator door opening and closing detection method based on camera images

Abstract

The invention discloses an elevator door opening and closing detection method based on camera images. According to the detection method, an elevator, an acceleration sensor and an image analyzing and processing system are involved, an elevator door is arranged on the elevator and comprises a landing door and a car door, the image analyzing and processing system comprises an image filtering module, an edge detection module, a binarization processing module, a linear detection module, an effective linear extraction module and a logic analyzing and processing module, and a camera is arranged at the top of the elevator and in electrical communication connection with the image analyzing and processing system. Elevator door opening and closing detection is carried out through the boundary information of the elevator door, the detection method has the advantage of being high in calculation speed and can be applied to an embedded platform, and the instantaneity, accuracy and stability of the detection method are fully considered. According to the detection method, the boundary features of original images and the boundary features of binary images are fused, meanwhile, the interference in multiple aspects is eliminated through light ray detection, distance mutation detection, distance filtering and the like, and the robustness of the detection is improved.

Description

technical field [0001] The invention relates to the technical field of intelligent detection, in particular to an elevator door opening and closing detection method based on camera images. Background technique [0002] Elevators are closely related to people's lives, and they mostly exist in shopping malls, office buildings, residential areas and other places. These places have the characteristics of large traffic, so elevators have gradually become places for advertising, and elevator advertising has gradually become a new media. The common elevator advertising methods include: posters, TVs, mirror frames, etc., and the method of projecting advertisements, notices and other information on the elevator door in the elevator car has become a new elevator advertising method, but the projection The opening and closing of the elevator must be controlled in real time to avoid irradiating passengers, so the projection switch needs to be determined according to the switch of the ele...

AI Technical Summary

Problems solved by technology

The available detection methods for the elevator door switch include acceleration sensor, image information, etc. The acceleration sensor judges the elevator door switch according to the acceleration change of the elevator start and stop, but the change of acceleration and the opening and closing of the elevator door are not carried out at the same time, so there is a big gap in this method. Due to the delay problem, the opening and closing of the elevator door cannot be detected quickly and effectively, but the running status of the elevator can be accurately judged; the image method is greatly affected by processor performance and environmental changes, but under certain conditions, it can meet the requirements of real-time detection Require

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