Sightline Detection for Accurate User Alerting
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Solution Overview
Problem
Existing alert technologies are limited in their application range and accuracy, often sending false alerts as they measure the distance between the eyes and an object rather than the actual focusing point, which can lead to inappropriate alerts in scenarios like driving or reading.
Innovation Solution
An alert method and apparatus that detects the focusing point position of a user's sightline and alerts based on this position, using techniques such as pupil direction detection, optical axis direction measurement, and image processing to determine the precise focusing point, allowing for more accurate and targeted alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the distance between eyes and an object is measured to send alerts, then the alert function can be implemented in certain application scenarios such as reading and writing, but the application range is limited and false alerts may be sent in specific scenarios
Solution Approach 1:
The patent replaces the mechanical distance measurement system with an optical-based sightline detection system. By using optical axis direction measurement and focusing point detection through image processing, the system achieves more accurate measurement of where the user is actually looking, thereby improving measurement precision while expanding applicability to various scenarios including driving, reading, and writing.
2Reliability
If the distance between eyes and an object is measured, then alerts can be sent for vision protection, but the object measured is not necessarily the position at which the user actually gazes, leading to false alerts
Solution Approach 1:
The patent transitions from one-dimensional distance measurement to two-dimensional focusing point detection by incorporating optical axis direction measurement. This dimensional expansion allows the system to determine not just how far the user is from an object, but precisely where the user is looking, thereby improving alert reliability and preventing false alerts by capturing complete gaze direction information.
Solution Approach 2:
The patent introduces an intermediary detection mechanism (sightline detection system) that bridges the gap between the user's eye position and the actual focusing point. By using optical axis direction as an intermediary parameter, the system can accurately determine where the user is actually looking, even when the user's eyes are not directly facing the object of interest.
Data Source
AI summary
Disclosed are an alert method and apparatus, and the present application relates to the field of intelligent alert technologies. The method comprising: detecting a focusing point position of a sightline of a user; and alerting the user according to the focusing point position and a state of the user. For the method and apparatus in the embodiments of the present application, a focusing point position of a sightline of a user can be detected precisely, and the user can be alerted accurately according to the focusing point position, so that the application range of the method and apparatus is relatively wide. In addition, according to a state of a user, user data, and the like, a monitoring parameter is selected and an alert threshold is set, so that the user can be properly alerted in a more targeted manner.