Display Orientation Control via Face Detection Feedback
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Solution Overview
Problem
Conventional display devices suffer from reduced visual quality and limited angular field of view due to deviations in viewing direction, necessitating a method to improve visibility and control without relying on remote controls.
Innovation Solution
A system utilizing a digital camera and image processor to detect faces and calculate deviations, controlling motors to adjust the display's orientation, employing feedback loops for continuous correction and optimizing the viewing angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display is fixed in position, then the device complexity is reduced, but the angular field of view and visual quality deteriorate when viewing direction deviates
Solution Approach 1:
The display is transformed from a fixed static structure to a dynamic adjustable structure that can rotate horizontally and incline vertically. Motors are integrated into the display base and backrest to enable automatic position adjustment based on detected viewer location, thereby expanding the angular field of view while maintaining reasonable device complexity through automated control.
Solution Approach 2:
A feedback control system is implemented using cameras to detect viewer position and facial orientation. The detected position information is fed back to the control system, which automatically adjusts the display angle and orientation to optimize viewing quality, resolving the contradiction between adaptability and device complexity.
2Ease of operation
If remote control is used, then the ease of operation is improved, but the device complexity increases due to additional control components
Solution Approach 1:
The display system performs self-adjustment by automatically detecting viewer position through integrated cameras and autonomously adjusting its orientation and angle. This eliminates the need for remote controls or manual operation, improving ease of operation while reducing device complexity by removing separate control components.
Solution Approach 2:
The mechanical remote control system is replaced with an automated optical detection and motor control system. Cameras detect viewer position and the control system automatically actuates motors to adjust display orientation, substituting manual mechanical control with automated sensor-based control.
3Illumination intensity
If the display orientation is adjusted to follow viewer position, then the visual quality is improved, but the ease of operation deteriorates due to automatic control mechanisms
Solution Approach 1:
The display system automatically adjusts its own orientation and angle based on detected viewer position without requiring user intervention. This self-service approach maintains optimal visual quality while simplifying operation, as the system handles adjustment autonomously based on camera detection of viewer location and facial orientation.
Data Source
AI summary
System and method for control using face detection or hand gesture detection algorithms in a captured image. Based on the existence of a detected human face or a hand gesture in an image captured by a digital camera (still or video), a control signal is generated and provided to a device. The control may provide power or disconnect power supply to the device (or part of the device circuits). Further, the location of the detected face in the image may be used to rotate a display screen horizontally, vertically or both, to achieve a better line of sight with a viewing person. If two or more faces are detected, the average location is calculated and used for line of sight correction. A linear feedback control loop is implemented wherein detected face deviation from the optimum is the error to be corrected by rotating the display to the required angular position. A hand gesture detection can be used as a replacement to a remote control wherein the various hand gestures control the various function of the controlled unit, such as a television set.