Adaptive Display Image Sizing Based on User Sightline Distance
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Solution Overview
Problem
Existing display technologies fail to maintain image visibility when a user changes their direction or position relative to the display surface, leading to reduced visibility and readability, especially when viewing from an oblique angle.
Innovation Solution
An information processing device that calculates the sightline distance between the user and the display surface based on the user's sightline direction and adjusts the size of the displayed image accordingly to ensure optimal visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the image size is fixed on the display surface, then the display device structure is simple, but the image visibility deteriorates when the user changes viewing direction or position
Solution Approach 1:
The patent applies dynamics by making the image size adjustable based on user viewing conditions. The display control unit dynamically changes the image size according to the calculated sightline distance, transforming a static display system into an adaptive one that responds to user position and orientation changes, thereby maintaining visibility without requiring multiple fixed display configurations
Solution Approach 2:
The patent changes the display parameter (image size) based on the sightline distance calculated from user position and sightline direction. By adjusting this critical parameter dynamically, the system maintains optimal visibility across different viewing conditions without changing the physical display device structure, resolving the contradiction between simplicity and adaptability
2Reliability
If the image size is increased to maintain visibility from oblique directions, then the visibility is improved, but the image size becomes excessively large when viewed from the front
Solution Approach 1:
The patent implements feedback by continuously monitoring the user's sightline direction and position, calculating the sightline distance, and using this information to adjust the image size accordingly. This closed-loop control ensures the image size is optimized for the current viewing condition - larger for oblique views and smaller for front views - preventing the extremes that would occur with fixed size adjustments
Solution Approach 2:
The system dynamically adjusts image size based on real-time sightline distance calculations, allowing the display to adapt smoothly between front and oblique viewing conditions. This dynamic adjustment prevents the image from being excessively large or small, maintaining viewing comfort across different positions
Data Source
AI summary
An information processing device of the present invention includes a sightline distance calculating unit (106) configured to calculate a sightline distance between a position of a user and a position of a point specified on an image display surface based on a sightline direction of the user, a character size calculating unit (108) configured to determine a character size in accordance with the sightline distance calculated by the sightline distance calculating unit (106), and a display control unit (110) configured to determine a size of a display image in accordance with the character size calculated by the character size calculating unit (108).