Omni-directional Camera Surveillance System for Wide-Area Detection
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Solution Overview
Problem
Conventional intelligent video surveillance systems face limitations due to the limited field-of-view of traditional perspective cameras, which increases complexity and cost when multiple cameras are used to achieve wider coverage, and are less effective in cluttered environments like busy ports, where active radar may not be permissible.
Innovation Solution
A video surveillance system utilizing an omni-directional camera with a 360-degree field of view, coupled with secondary PTZ cameras, for seamless coverage, automatic target detection, tracking, and real-time alert generation, which includes software for event detection and classification using advanced video processing algorithms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple traditional perspective cameras are used to achieve wider field of view, then the field of view coverage is improved, but the system complexity and cost increase
Solution Approach 1:
The system segments the surveillance function by using one omni-directional camera for wide-area detection and multiple PTZ cameras for focused tracking of specific targets, dividing the monitoring task across different camera types with specialized roles
Solution Approach 2:
The omni-directional camera serves multiple functions simultaneously: it provides 360-degree coverage, detects events of interest, and guides PTZ cameras, making a single camera system perform what previously required multiple dedicated cameras
2Area of stationary object
If multiple traditional perspective cameras are used to achieve wider field of view, then the field of view coverage is improved, but the video processing complexity increases
Solution Approach 1:
The system introduces an intermediary processing layer where the omni-camera detects events and determines target locations, then communicates this information to PTZ cameras, simplifying the overall processing by dividing tasks rather than having all cameras process all data
Solution Approach 2:
The system extracts and focuses processing resources on events of interest detected by the omni-camera, rather than processing data from all cameras uniformly, by sending location information only for detected events to relevant PTZ cameras
3Difficulty of detecting and measuring
If active radar is used for vessel security in port, then the detection capability is improved, but the system becomes less adaptable to restricted environments
Solution Approach 1:
The system replaces active radar (electromagnetic radiation) with passive optical sensors (cameras) that detect visible light, eliminating the need for active signal transmission and enabling operation in environments where radar is restricted
Solution Approach 2:
The system changes the detection parameter from electromagnetic radiation (radar) to optical radiation (camera imaging), allowing operation in environments where electromagnetic radiation is restricted while maintaining detection capabilities
Data Source
AI summary
A method of operating a video surveillance system is provided. The video surveillance system including at least two sensing units. A first sensing unit having a substantially 360 degree field of view is used to detect an event of interest. Location information regarding a target is sent from the first sensing unit to at least one second sensing unit when an event of interest is detected by the first sensing unit.