Dual-Camera Presenter Tracking for Low-Latency Accessible Presentations
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Solution Overview
Problem
Existing systems fail to provide real-time, universal, and inclusive tracking of presenters in educational settings, particularly for visually and hearing-impaired individuals, due to limitations in capturing and processing multiple information sources with low latency, requiring complex installations, and being non-portable and non-scalable.
Innovation Solution
A compact module comprising a fixed camera, moving camera, single-board computer, router, and power supply, integrated with artificial intelligence algorithms, enables real-time tracking and transmission of presenter visuals and audio to multiple devices via a local network, allowing scalable and portable access for users with impairments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If existing devices use wide shots to capture the entire blackboard, then the full presentation area is covered, but the image quality is insufficient to see small details and zooming is impossible
Solution Approach 1:
The system divides the capture task into two separate cameras: a fixed camera dedicated to capturing the blackboard with high quality for detail visibility, and a moving camera dedicated to tracking the presenter. This segmentation allows each camera to optimize for its specific function, resolving the contradiction between wide coverage and high image quality.
2Loss of information
If existing devices attempt to capture presenter, blackboard, and presentation simultaneously, then all information is captured, but real-time transmission with low latency is achieved
Solution Approach 1:
The system segments the information capture into separate dedicated streams: the fixed camera captures blackboard content, the moving camera captures the presenter, and the presenter's electronic device captures presentation content. Each stream is processed and transmitted independently, reducing overall system latency while maintaining complete information coverage.
Solution Approach 2:
The system merges multiple independent capture streams (fixed camera, moving camera, presenter's device) into a unified transmission system through the router, allowing simultaneous delivery of all information types with minimized latency by leveraging parallel processing capabilities.
3Reliability
If existing devices are installed by specialized personnel in fixed locations, then stable operation is achieved, but portability and ease of deployment are reduced
Solution Approach 1:
The system uses a router as a universal platform that can be deployed in various locations without requiring specialized installation infrastructure. The router's ability to function as a wireless access point and communication hub in diverse environments provides both portability and reliable operation, eliminating the need for specialized personnel and fixed installations.
4Ease of operation
If existing devices are designed for single-user control, then simple operation is achieved, but inclusivity and accessibility for multiple users with disabilities are reduced
Solution Approach 1:
The system provides universal access to all captured information through the wireless network, allowing multiple users with different disabilities to access the content in ways that suit their needs. Visually impaired users can access audio descriptions and text, while hearing-impaired users can access visual content and captions, all controlled through simple interfaces on their respective devices.
Data Source
AI summary
A system, device, and method to improve visual and/or auditory tracking of a presentation given by a presenter, the system having a first electronic device integrating a first piece of software for obtaining information run in the device; a second electronic device integrating a second piece of software; a microphone for obtaining auditory information of the presentation; a compact module comprising a single-board computer, a router, a power supply, a fixed camera for acquiring information of the presentation shown in a support, and a moving camera for acquiring information of the presenter's position; tracking device for obtaining presenter tracking information based on the information of the position. The second piece of software is adapted for showing the information run in the first electronic device, the auditory information of the presentation, the information shown through the support, and the presenter tracking information.