Dual-Camera Tracking Control for Delay-Resistant Subject Capture
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Solution Overview
Problem
Existing automatic shooting systems for sports fail to accurately track and capture moving subjects due to delays in subject recognition and communication, leading to the tracking target going out of the camera's view.
Innovation Solution
A tracking image capturing system that includes a bird's-eye view image capturing device and a pan/tilt image capturing device, utilizing object detection models to determine the tracking target and adjust the angle of view in real-time to maintain the target within the camera's field of view, reducing the impact of communication and calculation delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If subject recognition and PTZ camera control are performed through communication, then the system can achieve automatic tracking, but communication delay causes the tracking target to go out of the camera's view
Solution Approach 1:
The system performs preliminary actions by detecting the tracking target in advance from the bird's-eye view image and determining the required angle of view before the actual capture occurs. The control unit proactively adjusts the PTZ camera's angle of view based on the detected target position and predicted movement, rather than reacting after the target has moved out of view. This preliminary determination and adjustment compensates for the communication delay in the feedback loop.
2Speed
If calculation time for subject recognition is reduced, then tracking response speed improves, but recognition accuracy may deteriorate
Solution Approach 1:
The system performs subject detection and angle of view determination in advance from the bird's-eye view image before the PTZ camera captures the image. By pre-determining the tracking target and required camera angle, the system eliminates the need for time-consuming real-time recognition during the actual capture moment, thereby improving response speed without sacrificing accuracy.
Solution Approach 2:
The bird's-eye view image serves as an intermediary that contains advance information about the tracking target's position and movement. Instead of directly processing the PTZ camera image in real-time, the system uses the bird's-eye view image as an intermediate data source to determine tracking parameters, enabling faster response while maintaining recognition accuracy through the comprehensive view provided by the bird's-eye perspective.
Data Source
AI summary
A tracking image capturing system includes a first acquisition unit that acquires a first bird's-eye view image, a second acquisition unit that acquires a second image corresponding to a part of the first image, a first detection unit that detects a tracking target from the first image, a first determination unit that determines an angle of view of the second acquisition unit so that an image includes the tracking target, a second detection unit that detects the tracking target from the second image, a second determination unit that determines an angle of view of the second acquisition unit so that an image includes the tracking target, and a control unit that controls an angle of view of the second acquisition unit based on either the angle of view determined by the first determination unit or by the second determination unit.