Camera Control Using Radar Reference Points
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Solution Overview
Problem
Existing camera systems interacting with two-dimensional radar devices face difficulties in obtaining precise inclination and position information, making it challenging to track targets effectively, especially since two-dimensional radar devices cannot provide altitude information.
Innovation Solution
A method of controlling a camera that involves obtaining position information about reference points, calculating panning and tilting angles based on these points and target position information from the radar device, allowing the camera to track targets without needing inclination and position information about itself, using a host device or control unit to perform these calculations and control camera movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a camera is installed to interact with a two-dimensional radar device, then the camera can track targets using radar information, but the system cannot obtain altitude information about the camera making precise positioning difficult
Solution Approach 1:
The patent introduces reference points as intermediary elements between the two-dimensional radar and the camera. These reference points serve as mediators that bridge the information gap caused by the lack of altitude data from the 2D radar, enabling the calculation of camera positioning and orientation without direct altitude measurement
Solution Approach 2:
The patent replaces the need for direct mechanical measurement of camera altitude and orientation with a computational approach. By using coordinate transformations and mathematical calculations based on reference point positions, the system substitutes physical sensing requirements with information processing
2Measurement precision
If inclination information and position information about the camera are obtained precisely, then the camera can track targets accurately, but the system complexity increases due to additional sensing requirements
Solution Approach 1:
The patent extracts the essential positioning information needed for camera control from the complex set of available data. By selectively using only reference point positions and performing specific coordinate transformations, the system obtains necessary camera orientation data without requiring comprehensive sensing of all possible parameters
Solution Approach 2:
The system uses the camera's own control data (panning and tilting angles) in combination with reference point information to self-determine its positioning and orientation. This self-service approach eliminates the need for separate, complex external measurement systems
3Ease of operation
If reference points are used to calculate camera angles, then the camera can be controlled without altitude information, but additional position information about reference points must be obtained and stored
Solution Approach 1:
The patent performs preliminary action by pre-obtaining and storing the position information of reference points before actual target tracking begins. This preparation phase allows the system to have all necessary spatial data ready, enabling rapid and simple camera control during operation without real-time complex calculations
Data Source
AI summary
A method of controlling a camera to photograph a target, the method including: obtaining position information about a plurality of reference points which are positioned around the target; obtaining panning angles and tilting angles of the camera for the reference points; obtaining position information about the target from information about the target which is received from a radar device; obtaining a panning angle and tilting angle of the camera for the target, based on the position information about the reference points, the panning angles and tilting angles of the camera for the reference points, and the position information about the target; and controlling panning and tilting of the camera based on the panning angle and tilting angle of the camera for the target.