Augmented Reality Trail Overlay for Navigation in Low Visibility
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Solution Overview
Problem
Current navigation systems, such as GPS devices, struggle to provide accurate and intuitive displays of trail information, especially in challenging terrains and conditions like wooded areas, night, or snow-covered trails, leading to increased risk of getting lost or disoriented.
Innovation Solution
An augmented reality system on personal electronic devices generates a virtual trail overlay aligned with the real-world scene using three-dimensional map data, altitude information, and sensor inputs, allowing users to visualize and follow trails in real-time, even in adverse conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GPS devices are used to determine location and directions, then location information can be obtained anywhere with unobstructed line of sight to satellites, but short distance details of trails are not provided and the device is difficult to interpret requiring precise orientation
Solution Approach 1:
The patent transitions from traditional 2D map displays to 3D augmented reality visualization. The virtual trail overlay is rendered in three-dimensional space, allowing users to see trail elevation changes, terrain features, and directional guidance overlaid on the real-world camera view. This dimensional enhancement provides short-distance trail details and terrain information that flat GPS maps cannot convey, while the AR overlay naturally aligns with the user's perspective eliminating orientation requirements.
Solution Approach 2:
The patent introduces a camera-based augmented reality interface as an intermediary between the GPS navigation system and the user. Instead of directly viewing map data on a screen, users see virtual trail information superimposed on the real-world environment through the camera viewfinder. This intermediary layer translates abstract GPS coordinates and trail data into intuitive visual cues that align with physical terrain features, making trail following straightforward even in challenging conditions.
2Loss of information
If map or satellite image information is displayed, then trail location can be shown, but determination of proper direction orientation is complicated requiring the user to orient the device precisely
Solution Approach 1:
The patent employs 3D augmented reality rendering that overlays virtual trail information directly onto the camera's real-world view. The virtual trail line, elevation markers, and directional indicators are positioned in three-dimensional space corresponding to actual terrain features visible in the camera feed. This spatial alignment eliminates the need for precise device orientation because the AR overlay automatically adapts to the user's viewing angle and device position, continuously updating to maintain accurate trail representation.
3Reliability
If traditional GPS navigation is used in challenging terrains like wooded areas, night, or snow-covered trails, then location can be tracked, but visually identifying the precise location of trail becomes very challenging increasing risk of getting lost
Solution Approach 1:
The patent utilizes color-coded virtual trail overlays and illuminated graphical elements to enhance trail visibility in challenging conditions. The AR interface can display trail lines in high-contrast colors that stand out against various background conditions (snow, foliage, darkness). Elevation markers and directional indicators use distinctive color coding to guide users through difficult terrain, making the trail path clearly visible even when physical terrain features are indistinct or obscured by environmental conditions.
Data Source
AI summary
Systems and methods for providing an augmented reality display of a virtual trail overlay that is aligned with a real world scene on a camera scene display of a mobile device, the mobile device being in networked communication via a network with a server and a trail database, the method comprising: generating three-dimensional map data to be displayed as a virtual trail overlay on a camera display of the mobile device, processing by a visualization application on the mobile device, such that an augmented reality virtual trail overlay is displayed on the camera display of the mobile device. Refreshing the virtual trail whenever the mobile device is moved.