Dynamic Zoom Factor Adjustment for Fixed Display Viewing Distance
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Solution Overview
Problem
In situations where the distance between a viewer and a display device, such as a television, cannot be easily adjusted, viewers face challenges in seeing content with sufficient detail due to fixed seating arrangements and heavy or hardwired devices.
Innovation Solution
A system and method that uses a camera to obtain an image of the viewer, normalizes it based on camera specifications, analyzes the image to determine the distance between the viewer and the display device, and calculates a zoom factor to adjust the content display accordingly, allowing for dynamic adjustment of content size on the display device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the distance between the viewer and the display device is increased to provide a comfortable viewing position, then the viewer can see the content with sufficient detail, but the viewer cannot see the content with sufficient detail when the distance is fixed
Solution Approach 1:
The system changes the display parameter (zoom factor) based on the detected viewer distance. When the viewer is far from the display device, the system increases the zoom factor to enlarge the content, making it visible with sufficient detail without requiring the viewer to move closer. This resolves the contradiction by adjusting the content size parameter rather than the viewing distance.
2Measurement precision
If the display device is moved closer to the viewer to improve visibility, then the viewer can see the content with sufficient detail, but the display device cannot be easily moved due to weight or hardwired connections
Solution Approach 1:
The system replaces the mechanical solution of moving the display device with a digital/software solution (zoom factor adjustment). Instead of physically relocating the heavy or hardwired display device, the system uses image processing and scaling algorithms to enlarge the content digitally, achieving the same visibility improvement without mechanical movement.
3Measurement precision
If the viewer moves closer to the display device to see content with sufficient detail, then the viewer can see the content clearly, but the viewer has to stand or sit on the floor
Solution Approach 1:
The system adjusts the content size parameter (zoom factor) based on the detected viewer distance. When the viewer is at a fixed comfortable position, the system calculates the appropriate zoom factor to ensure content visibility without requiring the viewer to change their physical position. This maintains both viewing comfort and detail visibility simultaneously.
Data Source
AI summary
A system, computer-readable storage medium storing at least one program, and a computer-implemented method for determining a zoom factor of content displayed on a display device is presented. An image is obtained from a camera oriented toward a viewing position of the display device, where the image includes a viewer of the display device. The image is normalized based on specification of the camera to produce a normalized image. The normalized image is analyzed to determine a distance between the display device and the viewer of the display device. A zoom factor for content is determined based on the distance between the display device and the viewer of the display device. Content is displayed on the display device using the zoom factor.