3D Eye Tracking via Multi-Point Spatial Mapping
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Solution Overview
Problem
Conventional eye tracking technologies are limited to tracking users' gaze in two-dimensional spaces, hindering the provision of various services in three-dimensional environments.
Innovation Solution
A system that includes data collection and eye tracking units to acquire face and location information from multiple points in a three-dimensional space, estimating the area gazed at by users and mapping spatial coordinates to a three-dimensional map, allowing for accurate eye tracking and analysis of user behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional eye tracking technology is used, then eye tracking on two-dimensional screens is achieved, but tracking capability in three-dimensional space is limited
Solution Approach 1:
The patent transitions from two-dimensional eye tracking to three-dimensional eye tracking by introducing depth information through multiple photographing devices positioned at different locations. The system captures images from multiple angles and uses triangulation to calculate the three-dimensional coordinates of the pupil, enabling accurate gaze tracking in 3D space rather than limited to 2D screens.
2Measurement precision
If multiple photographing devices are deployed in three-dimensional space, then tracking precision is improved, but device complexity increases
Solution Approach 1:
The system divides the three-dimensional space into multiple monitoring zones by strategically positioning photographing devices at different locations. Each device is responsible for capturing images from its specific viewpoint, and the data from multiple devices is integrated to achieve comprehensive and precise three-dimensional eye tracking coverage.
Solution Approach 2:
The patent introduces a server as an intermediary that receives images from multiple photographing devices, performs image processing and pupil location calculation, and generates three-dimensional eye gaze information. This centralized processing approach simplifies the overall system architecture by separating data collection from data processing.
3Adaptability or versatility
If three-dimensional eye tracking is implemented, then service variety in 3D space is enabled, but data processing complexity increases
Solution Approach 1:
The three-dimensional eye tracking system is designed with universal applicability across multiple service scenarios including marketing research, educational content analysis, and safety monitoring. The core technology of calculating three-dimensional gaze coordinates serves as a foundation that can be adapted to various applications, making the system versatile rather than application-specific.
Data Source
AI summary
A system for eye-tracking according to an embodiment of the present invention includes a data collection unit that acquires face information of a user and location information of the user from an image captured by a photographing device installed at each of one or more points set within a three-dimensional space and an eye tracking unit that estimates a location of an area gazed at by the user in the three-dimensional space from the face information and the location information, and maps spatial coordinates corresponding to the location of the area to a three-dimensional map corresponding to the three-dimensional space.