Pan Tilt Camera Tracking Speed Control
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Solution Overview
Problem
Existing pan and tilt camera systems struggle to adjust rotation speed effectively to track irregularly moving subjects, leading to shaky images and user fatigue, as they do not consider movements in all directions and lack efficient speed adjustment mechanisms.
Innovation Solution
An imaging control device with a motion vector calculation unit, tracking direction instruction input unit, and drive information generation unit that calculates and adjusts the rotation speed of the pan and tilt mechanism based on specific tracking directions, allowing for precise tracking and reduced user fatigue by generating drive information for the next time step based on previous calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the imaging unit rotates in pan and tilt directions to follow the tracking target's motion, then the tracking target can be followed, but the image becomes shaky and difficult to view
Solution Approach 1:
The patent applies dynamics by making the rotation speed of the imaging unit variable rather than constant. The rotation speed is dynamically adjusted based on the detected motion speed of the tracking target, allowing the system to adapt to different movement scenarios and reduce image shaking while maintaining tracking capability.
Solution Approach 2:
The patent changes the parameter of rotation speed from a fixed value to a variable that depends on the target's motion characteristics. By detecting the motion speed and adjusting the rotation speed accordingly, the system optimizes both tracking performance and image stability.
2Ease of operation
If the rotation speed of the pan and tilt camera is adjusted by operating an arrow key, then the rotation speed can be changed, but it is difficult to track irregularly moving subjects
Solution Approach 1:
The patent implements feedback by detecting the motion speed of the tracking target and using this information to automatically adjust the rotation speed of the imaging unit. This closed-loop control system continuously monitors target movement and adapts the camera's rotation speed to match, enabling effective tracking of irregularly moving subjects without manual intervention.
Solution Approach 2:
The system performs self-service by automatically adjusting its own rotation speed based on detected target motion characteristics. The camera system monitors the target's movement and autonomously modifies its tracking parameters, eliminating the need for manual speed adjustment by the operator.
3Adaptability or versatility
If the subject is tracked in all directions (up, down, left, right) based on motion vector, then complete tracking is achieved, but the image becomes shaky and causes user fatigue
Solution Approach 1:
The patent applies local quality by differentiating the rotation speed adjustment based on the direction of target movement. Instead of uniformly adjusting rotation speed in all directions, the system selectively adjusts speed based on the specific motion components detected, optimizing tracking in directions where it is most needed while minimizing unnecessary rotations that cause image shaking.
4Measurement precision
If a wide angle camera is used to detect motion vector and estimate subject direction, then subject detection is improved, but the rotation speed cannot be effectively adjusted to match subject movement speed
Solution Approach 1:
The patent merges the functions of subject detection and rotation speed control into an integrated system. The motion detection from the wide angle camera is combined with the pan-tilt camera control system, creating a unified tracking mechanism where detection information directly drives rotation speed adjustment, effectively linking measurement precision with speed control.
Data Source
AI summary
An imaging control device according to an aspect of the present invention comprises a motion vector calculation unit that calculates a motion vector of a tracking target on the basis of a moving image obtained by an imaging unit, a tracking direction instruction input unit that receives an input of a tracking direction instruction indicating a specific tracking direction for tracking the tracking target, a tracking direction motion component extraction unit that extracts a motion component in the specific tracking direction from the motion vector of the tracking target on the basis of the tracking direction instruction; and a drive information generation unit that generates drive information of only the specific tracking direction of a pan and tilt mechanism on the basis of the extracted motion component in the specific tracking direction.