AR Registration Using Colored Markers and Segmented Zones
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Solution Overview
Problem
Existing augmented reality systems struggle to accurately provide individual viewers with real-time, dynamic event data visualization at sporting events or other activities, as they often rely on traditional computer vision approaches that are limited by organic shapes, changing lighting conditions, and non-distinctive features, leading to inaccuracies in tracking the viewer's position and orientation.
Innovation Solution
The system employs novel techniques to detect specific features like ridge lines, edges, and corners, using iterative methods to identify their 3D spatial location, combined with GPS, compass, and gravitometer data, to establish a robust correspondence between the viewer's camera image and surveyed features, enabling accurate registration and tracking of augmented reality content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional computer vision approaches are used to track viewer position and orientation, then the system can operate with standard equipment, but the tracking accuracy deteriorates due to organic shapes, changing lighting conditions, and non-distinctive features
Solution Approach 1:
The patent applies color changes by using distinctive colored features (such as colored markers or painted elements) on the venue structure that are easily detectable by camera systems. These colored features provide high contrast and distinctiveness against varying backgrounds, enabling accurate tracking of viewer position and orientation even under changing lighting conditions and with organic venue shapes.
2Manufacturing precision
If multiple registrations are used to improve AR content alignment accuracy, then the alignment precision improves, but the computational complexity and processing time increase
Solution Approach 1:
The patent applies preliminary action by performing multiple registrations in advance and storing the results for later use. The system pre-processes and stores registration data from multiple camera positions and orientations before the actual AR content delivery, allowing the mobile device to quickly retrieve and apply pre-computed alignment information without performing computationally intensive processing in real-time.
Solution Approach 2:
The patent applies segmentation by dividing the venue into multiple registration zones, each with its own pre-computed alignment data. Instead of performing a single comprehensive registration, the system segments the tracking space and creates multiple localized registrations that can be selectively applied based on the viewer's current position, reducing the computational burden on individual devices.
3Adaptability or versatility
If broadcaster-selected graphics are inserted into broadcast images, then the viewing experience is enhanced, but the content may not correspond to individual viewer preferences or different viewpoints at the venue
Solution Approach 1:
The patent applies dynamics by enabling dynamic selection and delivery of AR content based on each viewer's real-time position, orientation, and preferences. The system continuously updates the AR overlay content to match the viewer's current viewpoint and can adapt to different user preferences, transforming the static broadcaster-selected graphics into dynamic, personalized content that responds to individual viewer context.
Data Source
AI summary
Augmented reality systems provide graphics over views from a mobile device for both in-venue and remote viewing of a sporting or other event. A server system can provide a transformation between the coordinate system of a mobile device (smart phone, tablet computer, head mounted display) and a real world coordinate system. Requested graphics for the event are displayed over a view of an event.