AR Object Anchoring With Spatial Registration Feedback

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Solution Overview

Problem

Challenges exist in maintaining the proper positioning and scaling of virtual objects within augmented reality scenes as the scene changes or the AR device moves, leading to overlap with other virtual or physical objects.

Innovation Solution

An AR device uses sensors to determine the position, orientation, and location of itself and physical objects within the scene, utilizing a center of frame as a reference to adjust the virtual object's position, orientation, and scale to maintain spatial registration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the AR device moves or the augmented reality scene changes, then the field of view shifts, but the virtual object position becomes unstable and may overlap with physical or virtual objects

Engineering Contradiction:

Improvevirtual object positioning stabilityVSAvoidspatial registration accuracy

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system continuously monitors the position and orientation of the AR device using sensors (accelerometers, gyroscopes, magnetometers) and uses this feedback to dynamically adjust the virtual object's position in the rendered scene, maintaining stable spatial registration despite device movement

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent introduces a coordinate transformation system that acts as an intermediary between the physical world coordinates and the virtual rendered scene coordinates, using transformation matrices to map positions accurately while accounting for device orientation and field of view changes

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the AR device moves closer to or farther from virtual objects, then the distance changes, but the virtual object scale does not properly adjust

Engineering Contradiction:

Improvevirtual object scalingVSAvoidspatial proportion accuracy

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The system dynamically changes the scale parameter of virtual objects based on the calculated distance between the AR device and the virtual object's anchor point, using perspective projection mathematics to adjust size while maintaining correct spatial proportions

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If sensors are used to determine position and orientation, then spatial data can be gathered, but the virtual object may still shift relative to physical objects

Engineering Contradiction:

Improveposition detection accuracyVSAvoidvirtual object anchoring stability

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The system performs preliminary calibration by identifying anchor points in the physical environment and pre-calculating transformation matrices that account for the relationship between sensor data and virtual object positions, establishing a stable reference frame before rendering begins

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent creates a universal coordinate transformation system that handles multiple sensor types (accelerometers, gyroscopes, magnetometers) and multiple virtual object types through a unified mathematical framework, ensuring consistent anchoring behavior across different scenarios

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12524974B2Methods and systems for anchoring objects in augmented or virtual reality

Publication Date: 2026.01.13 COMCAST CABLE COMM LLC

AI summary

Methods, systems, and apparatuses are described for stabilizing an object in an augmented reality scene by spatially registering the virtual object to one or more physical objects or virtual objects within the augmented reality scene.