Tiltable Imaging Display Device for Line of Sight Alignment
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Solution Overview
Problem
In video conference systems, when a camera is oriented upward relative to a user, it can cause a deviation in the line of sight between the user and the displayed image, leading to a sense of incongruity due to the mismatch between the user's line of sight and the displayed participant's line of sight.
Innovation Solution
An imaging display device with a tiltable optical axis in the vertical plane, equipped with a rotary drive unit and a control unit that includes a face detection unit and an angle control unit. The angle control unit calculates the rotation angle based on the vertical dimension of the face image and adjusts the imaging device to align the optical axis, ensuring the face is displayed optimally without excessive deviation in the line of sight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the camera is oriented upward to eliminate excessive region above the user's head, then the display area is optimized, but the line of sight between the user and the displayed image deviates, causing a sense of incongruity
Solution Approach 1:
The camera's inclination angle is made dynamically adjustable rather than fixed. The system automatically changes the camera angle based on detected face position, allowing the display area optimization and line of sight alignment to be simultaneously achieved through real-time adaptation.
Solution Approach 2:
The system changes the physical parameter of camera inclination angle to resolve the contradiction. By adjusting this parameter based on face detection results, the system optimizes both the display area utilization and the line of sight alignment between user and displayed image.
2Ease of operation
If the camera angle is fixed to maintain line of sight alignment, then the viewing comfort is improved, but excessive regions above the head cannot be eliminated from the screen
Solution Approach 1:
Instead of fixing the camera angle, the system makes it dynamically adjustable based on real-time face detection. This allows the system to maintain line of sight alignment while simultaneously eliminating excessive display areas by adapting the angle to the actual face position.
Solution Approach 2:
The system performs self-adjustment of the camera angle based on automatic face detection, eliminating the need for manual configuration. The device serves itself by automatically optimizing both viewing comfort and display area utilization.
3Area of stationary object
If the camera is positioned to capture the entire user body, then the comprehensive view is achieved, but the face image becomes small and line of sight deviation increases
Solution Approach 1:
The system changes the camera inclination angle parameter to optimize the captured region. By adjusting this parameter based on face detection, the system ensures the face occupies an appropriate size in the frame while maintaining accurate line of sight alignment.
Solution Approach 2:
The system prioritizes the quality and size of the face image region over the entire body capture. By focusing on optimizing the face detection and display, the system ensures high-quality face images while capturing sufficient background context.
Data Source
AI summary
An imaging display device includes an imaging device configured to image a region including a face of an observer and a background, the imaging device being provided to have an optical axis tiltable in a vertical plane, a rotary drive unit configured to incline the imaging device by a predetermined angle in the vertical plane, a display device including a display unit configured to display a captured image captured by the imaging device, and a control unit configured to control the rotary drive unit. The control unit includes a face detection unit configured to detect a face image of the observer from the captured image, and an angle control unit configured to calculate, based on a vertical dimension of the face image, a rotation angle of the imaging device, and to transmit a control signal based on the rotation angle to the rotary drive unit.