AR Display Alignment Using Light Patterns From Electronic Screens
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Solution Overview
Problem
Augmented reality devices struggle to accurately determine the position and tilt of electronic devices within their field of view, leading to improper display of virtual objects.
Innovation Solution
The augmented reality device utilizes a camera to acquire a light pattern emitted by an electronic device, processes this information to identify the tilt or position of the device's display area, and adjusts the virtual object's display accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the augmented reality device uses a camera to detect electronic devices in the field of view, then it can identify multiple devices, but it becomes difficult to accurately determine the position and tilt of each device
Solution Approach 1:
The patent introduces a light pattern as an intermediary element between the electronic device and the augmented reality device. The light pattern, emitted by the electronic device, serves as a mediator that carries positional and orientational information. The AR device detects this light pattern to accurately determine the position and tilt of the electronic device, resolving the measurement precision issue while maintaining the ability to detect multiple devices.
Solution Approach 2:
The patent utilizes variations in the light pattern (referred to as 'color changes' in the broader sense of optical property changes) to encode information about the electronic device's position and orientation. By analyzing the characteristics of the emitted light pattern, the AR device can precisely identify device parameters even when multiple devices are present in the field of view.
2Ease of operation
If the augmented reality device displays virtual objects based on estimated device position, then it can provide virtual content, but the virtual objects are not accurately positioned or oriented relative to the electronic device
Solution Approach 1:
The patent implements a feedback mechanism where the electronic device emits a light pattern that provides real-time information about its position and orientation to the augmented reality device. The AR device uses this feedback to accurately calculate and adjust the position and tilt of virtual objects, ensuring they are correctly aligned with the physical electronic device. This resolves the placement accuracy issue while maintaining ease of operation.
3Device complexity
If the augmented reality device relies solely on camera imaging to determine device orientation, then the system remains simple, but it cannot accurately identify the tilt of the display area
Solution Approach 1:
The light pattern serves as an intermediary that carries precise orientational information from the electronic device to the augmented reality device. This intermediary approach allows the system to maintain relative simplicity while achieving accurate tilt identification, as the light pattern inherently encodes the display area orientation without requiring complex sensor systems in the AR device.
Data Source
AI summary
According to various embodiments, an augmented reality device may comprise: at least one camera, a communication circuit, a display, and at least one processor, wherein the at least one processor is configured to: acquire, through the at least one camera, a first image including a pattern of light emitted from an electronic device; receive information on the pattern from the electronic device through the communication circuit; identify at least one of the tilt and position of a display area of the electronic device based on the first image and information on the pattern; and display a virtual object on the display based on at least one of the tilt and position of the display area of the electronic device.