Media Playback Eye Detection for Privacy Protection
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Solution Overview
Problem
Existing solutions for protecting user privacy during media playback in public places, such as polarization and face recognition, are either costly, affect the viewing experience, or fail to prevent peeping from directly in front of the screen due to dependency on face detection technology.
Innovation Solution
A method and device that uses a camera to detect the number of human eyes within a shooting range, encrypting the playback image when additional viewers are detected, thereby improving detection precision and preventing information leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If face recognition technology is used to detect unauthorized viewers, then privacy protection is achieved, but the system becomes excessively dependent on face detection technology and has high requirements for shooting range
Solution Approach 1:
The patent extracts the essential detection function from complete face recognition, focusing only on detecting eyes within the shooting range. This allows the system to determine viewer presence without requiring full face detection, thereby reducing dependency on complex face recognition technology while maintaining privacy protection capability.
Solution Approach 2:
The patent applies partial action by detecting only the eyes of potential viewers rather than requiring complete face detection. This partial detection approach is sufficient to identify unauthorized viewers and trigger privacy protection measures, while avoiding the high requirements and complexity of full face recognition systems.
2Reliability
If traditional face detection is used, then unauthorized viewing can be detected, but detection precision is insufficient when the peeper's face does not completely appear within the camera's shooting range
Solution Approach 1:
The patent extracts the eye detection function from complete face detection, enabling the system to identify unauthorized viewers based solely on eye presence within the shooting range. This extraction significantly improves detection precision by not requiring the peeper's entire face to be visible, thus solving the limitation of traditional face detection methods.
3Reliability
If polarization or refraction technology is used to restrict viewing angles, then privacy protection is achieved, but device cost increases and viewing effect is blocked
Solution Approach 1:
The patent replaces optical mechanisms (polarization, refraction) with a computational approach using camera-based eye detection. Instead of physically modifying the screen to restrict viewing angles, the system uses image processing and algorithms to detect unauthorized viewers and control content display, thereby reducing manufacturing complexity and cost while maintaining privacy protection.
Solution Approach 2:
The patent introduces an intermediary system consisting of the camera and processing unit that mediates between the screen content and the viewer. This intermediary detects unauthorized viewing attempts and controls content delivery, replacing the need for direct optical modifications to the screen and reducing overall device complexity and cost.
Data Source
AI summary
A media playback method and device that relate to the field of computer technologies are provided. The method includes turning on a camera to detect the number of human eyes within a shooting range to determine an initial number of viewers when a user performs a media playback activity, detecting, at a set interval, the number of human eyes to determine a current number of viewers, and encrypting a playback image when the current number of viewers is greater than the initial number of viewers. The method is applicable when a user views information, such as a text, a picture, or a video, on a device such as a mobile phone terminal, a pad device, or a computer.