Surveillance Camera Visual Field Control for Handover Tracking
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Solution Overview
Problem
Conventional wide-area surveillance systems face challenges in maintaining tracking of a suspicious individual during handover between surveillance camera terminals, as the imaging visual fields of both terminals may not align in time, leading to potential loss of sight of the object person.
Innovation Solution
A surveillance camera terminal with imaging visual field control means that adjusts its field based on the object's position and predicts its movement using a displacement vector, storing pre-defined visual fields for handover areas and detecting the object's proximity to initiate timely adjustments, ensuring continuous tracking without losing sight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the surveillance camera terminal changes its imaging visual field to center the object person in the frame, then the object person is tracked accurately, but the terminal may lose sight of the object during handover to another terminal
Solution Approach 1:
The handover surveillance camera terminal performs preliminary actions by changing its imaging visual field to a predetermined handover visual field before the object person actually enters the handover area. This advance preparation ensures that when handover occurs, both terminals are already positioned to capture the object, preventing loss of sight during the transition.
Solution Approach 2:
The system dynamically adjusts the imaging visual field based on the object person's position and movement. The terminal switches between normal tracking mode (centering the object) and handover mode (using predetermined visual fields), making the system adaptable to different operational phases to maintain continuous tracking reliability.
2Ease of operation
If both surveillance camera terminals adjust their imaging visual fields to handover visual fields after the object enters the handover area, then handover coordination is achieved, but the object may have already moved out of the handover area
Solution Approach 1:
The system detects when the object person approaches the handover area and triggers preliminary visual field adjustments before the object actually enters the handover zone. This timing advancement ensures that both terminals have their imaging visual fields ready in advance, eliminating delays and preventing the object from moving out before handover completion.
Data Source
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AI summary
A surveillance camera terminal (1) is provided which is capable of lowering the possibility of losing sight of an object being tracked at the time of handover of the object to another surveillance camera terminal (1). The surveillance camera terminal (1) changes the imaging visual field of the imaging section (12) by using an object person as a reference when the object person is not positioned near a handover area between the surveillance camera terminal (1) and another surveillance camera terminal (1) located adjacent thereto. When the object person is positioned near the handover area between the surveillance camera terminal (1) and the adjacent surveillance camera terminal (1), the surveillance camera terminal (1) changes the imaging visual field of the imaging section (12) by using an imaging visual field for use in handover as a reference. Therefore, the imaging visual field of the imaging section (12) has already been adjusted to the imaging visual field for use in handover at the time when the object person enters the handover area.