PTZ Camera Auto-Adjustment via 3D Head Tracking
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Solution Overview
Problem
Pan-tilt-zoom (PTZ) cameras in security systems require complex and slow manual adjustments using computer keyboards, making them inconvenient for precise control.
Innovation Solution
A camera adjusting system that includes a time-of-flight (TOF) camera capturing 3D images of a subject, which are then used to model and compare with reference models, allowing for automatic adjustment of the PTZ camera's angles and focus via a control apparatus, utilizing modules for detecting, modeling, calculating, and controlling camera parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual control using computer keyboard is used, then the camera can be controlled, but the operation becomes complex and slow
Solution Approach 1:
The system enables the camera to adjust itself automatically by detecting subject movements and autonomously calculating the required pan-tilt-zoom parameters, eliminating the need for manual keyboard operation and significantly reducing adjustment time
Solution Approach 2:
The patent replaces the mechanical keyboard input system with an automated vision-based control system that uses image processing and algorithms to directly control camera movements, making the operation both simpler and faster
2Ease of operation
If automated control based on 3D imaging is implemented, then operation convenience is improved, but device complexity increases
Solution Approach 1:
The control apparatus integrates multiple functions including 3D image acquisition, subject detection, movement analysis, and camera control within a single unified system, allowing one device to perform what would otherwise require multiple separate systems
Solution Approach 2:
The patent introduces a control apparatus as an intermediary between the imaging system and the PTZ camera, which processes 3D image data and translates it into camera control commands, managing the system complexity through modular architecture
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy and precise control of PTZ cameras by automatically adjusting capturing angles, positions, and zoom scales based on subject movements, improving the convenience and efficiency of camera operation.
Implementation Method 1
a time-of-flight (TOF) camera for capturing a three dimensional (3D) image of a head of a subject
Data Source
AI summary
A camera adjusting system includes a first camera, a second camera, and a control apparatus. The first camera is movably arranged on a sliding rail to monitor a locale. The second camera captures a three dimensional (3D) image of a head of a subject. The control apparatus receives the captured 3D image of the head of the subject and simulates a corresponding 3D model according to the captured 3D image, and compares the actual 3D model with a reference 3D model, to compute a compared result, and outputs a control signal to the first camera to adjust parameters of the first camera according to the compared result.