XR Relocalization Using Sensor-Guided Feature Subsets
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Extended reality systems face computational challenges in accurately relocalizing user devices due to the complexity of comparing captured images with large data sets, which can be mitigated by using data from multiple sensors to reduce the scope of comparison.
Innovation Solution
Utilizing sensors such as security cameras, motion detectors, and infrared sensors to refine and verify the approximate location of a mobile device, thereby generating a smaller subset of data for comparison to determine its position and orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the entire known environment data set is compared with the captured image to determine device location, then localization accuracy is improved, but computational complexity increases
Solution Approach 1:
The patent divides the large known environment data set into multiple smaller subsets based on spatial regions or semantic categories. Instead of comparing the captured image with the entire data set, the system segments the comparison task into multiple smaller operations, each handling a specific subset. This reduces the computational complexity of each individual comparison while maintaining overall localization accuracy through coordinated results from multiple subsets.
Solution Approach 2:
The patent performs preliminary actions by pre-processing the known environment data set into organized subsets before the actual localization task. Data structures are pre-computed, indexed, and arranged in advance so that during runtime, the system can quickly select and compare only relevant subsets rather than processing the entire data set. This preliminary organization significantly reduces real-time computational complexity.
2Productivity
If data from multiple sensors is used to refine approximate location, then relocalization efficiency is improved, but device complexity increases
Solution Approach 1:
The patent merges data from multiple sensors (cameras, LIDAR, inertial sensors, etc.) into a unified localization framework. Instead of treating each sensor independently, the system combines their outputs to generate a refined approximate location. This merging approach improves relocalization efficiency by leveraging complementary information from different sensors while managing complexity through integrated processing.
Solution Approach 2:
The patent implements a multi-functional sensor fusion system where the same processing framework handles data from various sensor types. The system is designed to be universal, accommodating different sensor inputs through a common interface and processing pipeline. This multi-functionality improves efficiency by reusing the same computational infrastructure across multiple sensor modalities rather than creating separate processing chains.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces computational complexity and enhances the accuracy and efficiency of relocalization processes in extended reality environments.
Implementation Method 1
An infrared sensor may detect heat generated by the mobile device to further refine the approximate location
Data Source
AI summary
Systems, apparatuses, and methods are described for relocalizing a mobile device within an extended reality environment. A subset of a data set, such as a feature pointcloud may be generated based on determining an approximate location of a mobile device. The approximate location may be determined based on data received from one or more sensors in the extended reality environment. Features associated with the approximate location may be included in the subset while other features may be removed. Features extracted from an image taken by the mobile device may be compared with the subset of the data set to relocalize the mobile device.