Glasses-free absolute motion detection via anatomical reference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing user-interface devices, such as those used in augmented and virtual reality environments, often require direct contact and struggle to accurately quantify absolute motion, limiting intuitive interaction and being tiresome for complex tasks, especially when relative motion is captured instead of absolute motion.
Innovation Solution
An electronic device with multiple image sensors capturing images from different fields of view determines absolute motion by analyzing anatomical features, estimating distance, and computing motion in a plane, allowing interaction without the need for glasses or gloves, and generating stereoscopic images based on this motion for intuitive interaction with 3D content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If user-interface devices capture relative motion instead of absolute motion, then device complexity is reduced, but measurement precision of user motion deteriorates
Solution Approach 1:
The patent introduces an intermediary reference object with known dimensions into the measurement system. This reference object serves as a mediator between the image sensors and the user's anatomical features, enabling the system to calculate absolute motion and distance without requiring complex direct measurement infrastructure. The reference object acts as a calibration standard that transforms relative image measurements into absolute real-world measurements.
Solution Approach 2:
The patent replaces complex mechanical motion tracking systems with an optical-based image analysis system. Instead of using mechanical encoders, gyroscopes, or other complex sensing mechanisms, the system uses standard image sensors to capture visual information and computationally derives absolute motion through geometric relationships and perspective analysis, thereby reducing device complexity while maintaining measurement precision.
2Measurement precision
If glasses or gloves are required for motion tracking, then measurement precision improves, but ease of operation deteriorates
Solution Approach 1:
The system performs self-calibration by automatically detecting and analyzing the user's anatomical features (such as hand size, finger length, or body proportions) from captured images. Instead of requiring the user to manually input biometric data or wear calibrated equipment, the system extracts measurement reference information directly from the user's own body, enabling glasses-free, glove-free operation while maintaining precision.
Solution Approach 2:
The patent changes the measurement parameters from requiring external wearable devices to using intrinsic anatomical parameters of the user's body. By utilizing naturally occurring anatomical dimensions (such as interpupillary distance, hand span, or finger length) as measurement references, the system eliminates the need for additional wearable equipment while preserving measurement accuracy through proper geometric calibration.
3Ease of operation
If direct contact user-interface devices are used, then ease of operation improves, but adaptability to immersive environments deteriorates
Solution Approach 1:
The patent creates a universal user interface system that can operate across multiple interaction modes and environments. The image-based motion tracking system serves multiple functions: it works for both contactless and contact-based interactions, supports various immersive environments (VR, AR, MR), and accommodates different types of users without requiring specialized equipment. This multi-functional approach enables the system to adapt to diverse应用场景 while maintaining ease of operation.
Data Source
AI summary
During operation, an electronic device may capture images using multiple image sensors having different fields of view and positions. Then, the electronic device may determine, based at least in part on an apparent size of an anatomical feature in the images (such as an interpupillary distance) and a predefined or predetermined size of the anatomical feature, absolute motion of at least a portion of the individual along a direction between at least the portion of the individual and the electronic device. Moreover, the electronic device may compute based at least in part on an estimated distance along the direction corresponding to the apparent size and the predefined or predetermined size and angular information associated with one or more objects in the images relative to the positions, absolute motion of at least the portion of the individual in a plane that is perpendicular to the direction.