Eye Protection Display System Using Face and Eye Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional pupil tracking systems face errors due to ambient light interference, and there is a growing need for eye protection in prolonged screen usage scenarios, as users often operate devices at varying distances and in different lighting conditions.
Innovation Solution
An image system with an image sensor, display controller, and display screen that automatically adjusts brightness and switches off the screen based on user proximity and ambient light strength, using face and eye detection to ensure eye protection by reducing screen brightness or turning it off when the user is too close or in low light conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pupil tracking is performed using ambient light, then the system can operate without additional light sources, but measurement precision deteriorates due to ambient light interference
Solution Approach 1:
The patent applies preliminary action by pre-illuminating the eye with a controlled light source before capturing the eye image. This ensures that the light image is formed in the eye prior to any ambient light interference during image capture, thereby improving measurement precision while maintaining system feasibility
Solution Approach 2:
The patent introduces an intermediary light source that acts as a mediator between the ambient light and the eye. This controlled light source creates a known light image in the eye that can be distinguished from ambient light, resolving the precision issue while keeping the system relatively simple
2Ease of operation
If the display screen remains on during prolonged usage, then user convenience is maintained, but harmful factors increase due to eye strain from continuous exposure
Solution Approach 1:
The patent implements feedback by continuously monitoring eye position and distance through image capture, then automatically adjusting display screen brightness or turning it off based on the detected eye state. This closed-loop control protects eyes from strain while maintaining user convenience through automatic adaptation
Solution Approach 2:
The system applies self-service by automatically detecting when the user is in proximity and autonomously adjusting or turning off the display screen without requiring manual user intervention. This protects the user's eyes while maintaining convenience through automated eye-protection functionality
3Object-affected harmful factors
If the display screen is turned off automatically to protect eyes, then eye protection is improved, but loss of information occurs when the user needs to reference displayed content
Solution Approach 1:
The patent applies dynamics by making the display screen brightness and state dynamically adjustable based on real-time eye detection results. The screen automatically adjusts brightness or turns off only when eyes are detected in harmful positions, and can be restored when eyes are in safe positions, thereby protecting eyes while preserving information accessibility when needed
Data Source
AI summary
An electronic system including an image sensor, a face detection engine, an eye detection engine and an eye protection engine is provided. The image sensor captures an image. The face detection engine recognizes a user face in the image. The eye detection engine recognizes user eyes in the image. The eye protection engine turns off a display device when the user eyes are recognized in the image but the user face is not recognized in the image.