Dynamic Dead Zone Adjustment for Camera Tracking Stability
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Solution Overview
Problem
Conventional automatic tracking apparatuses face issues with losing track of objects due to wide dead zones when objects move quickly, and experience shaking screens when objects move quiveringly, leading to suboptimal tracking performance.
Innovation Solution
An automatic tracking apparatus that includes a unit for detecting object position, a prohibition area setting unit adjusting tracking zones based on object type, orientation, speed, and camera platform positions, and a controller managing pan, tilt, and zoom operations to maintain object tracking within defined areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a wide dead zone is used to prevent shaking screens when objects move quiveringly, then tracking stability is improved, but objects moving at high speed may exit the screen and be lost
Solution Approach 1:
The patent applies dynamics by making the dead zone radius variable rather than fixed. The dead zone radius is dynamically adjusted based on the detected movement speed of the object: when the object moves slowly or quiveringly, a larger dead zone radius is used to prevent shaking screens; when the object moves at high speed, a smaller dead zone radius is used to prevent the object from exiting the screen. This dynamic adjustment resolves the contradiction between tracking stability and object tracking reliability.
2Reliability
If a small dead zone is preset to prevent high-speed object loss, then object tracking reliability is improved, but shaking screens occur when objects move quiveringly
Solution Approach 1:
The patent resolves this contradiction by dynamically adjusting the dead zone radius according to object movement characteristics. When the object moves quiveringly or slowly, the system increases the dead zone radius to prevent shaking screens. When the object moves at high speed, the system decreases the dead zone radius to prevent object loss. This dynamic adaptation allows the system to optimize for either screen stability or object tracking reliability depending on the current movement conditions.
3Device complexity
If the dead zone radius is fixed to simplify control, then device complexity is reduced, but the system cannot adapt to different object movement speeds and types
Solution Approach 1:
The patent applies dynamics to resolve this contradiction by transitioning from a fixed dead zone radius to a variable one. The system automatically adjusts the dead zone radius based on detected object movement speed and type, enabling adaptation to different tracking scenarios without requiring complex manual control. The controller monitors object movement characteristics and dynamically modifies the dead zone parameters, achieving both adaptability and reasonable control complexity.
Solution Approach 2:
The patent employs feedback mechanisms where the controller continuously monitors object position and movement speed detected by the image pickup apparatus. Based on this feedback information, the system automatically adjusts the dead zone radius to match current tracking conditions. This feedback loop enables the system to adapt to different object types and movement speeds while maintaining manageable control complexity through automated adjustment.
Data Source
AI summary
An automatic tracking apparatus includes: an image pickup apparatus having zoom function; camera platform driving the image pickup apparatus in at least one of pan and tilt directions, and automaically tracking an object by operating the image pickup apparatus and camera platform; unit for detecting a position of the object in picked-up image information; prohibition area setting unit for setting tracking prohibition area, according to information on the automatic tracking apparatus that includes information on the object including information on at least one of type, orientation and traveling speed of the object, or information on at least one of pan and tilt positions of the camera platform and zoom position; and controller that does not perform tracking operation in the prohibition area, and performs zooming, panning and tilting to perform the tracking operation when out of the prohibition area.