3D Display Interocular Distance Measurement and Correction
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Solution Overview
Problem
Existing three-dimensional display devices face challenges in accurately measuring and correcting for interocular distance, leading to suboptimal 3D image viewing experiences due to crosstalk and inefficient image alignment for users with varying interocular distances.
Innovation Solution
A method and system utilizing a three-dimensional display device with a display, barrier, detector, and controller to measure and correct interocular distance by displaying parallax images and detecting user eye positions, allowing for precise adjustment of image viewing sections to minimize crosstalk and optimize 3D image alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed reference value of interocular distance is used for display correction, then the device structure remains simple, but measurement precision and viewing quality deteriorate for users with varying interocular distances
Solution Approach 1:
The patent transitions from a static fixed reference value approach to a dynamic user-specific measurement approach. The system dynamically determines viewable sections and displays images based on each user's actual interocular distance measured during use, rather than relying on a predetermined fixed value. This dynamic adaptation resolves the contradiction by allowing the system to maintain simplicity in structure while achieving precision through real-time user-specific calibration.
Solution Approach 2:
The system performs self-calibration by automatically measuring each user's interocular distance and using that measurement to correct the display parameters. The display device serves itself by incorporating the measurement and correction functions within the same system, eliminating the need for external calibration equipment or complex manual adjustment mechanisms, thus maintaining structural simplicity while achieving measurement precision.
2Measurement precision
If interocular distance measurement and correction functions are added to improve viewing quality, then measurement precision and image alignment improve, but device complexity increases
Solution Approach 1:
The patent merges the interocular distance measurement function, viewable section determination function, and image display function into a single integrated system. The controller combines these functions to create a unified correction mechanism that determines viewable sections based on measured interocular distance and automatically adjusts image display accordingly. This merging approach improves measurement precision and viewing quality while minimizing the increase in device complexity by consolidating functions rather than adding separate independent systems.
Solution Approach 2:
The display device incorporates multi-functionality by using the same hardware components for multiple purposes: the display serves both as the image output device and as part of the measurement system, the controller performs both image processing and measurement calculation, and the integrated system provides both standard display functions and interocular distance correction functions. This universality allows the system to achieve improved measurement precision without proportionally increasing device complexity.
3Ease of operation
If viewable sections are determined based on a reference interocular distance value, then the display process remains simple, but image alignment and crosstalk reduction deteriorate for users with different interocular distances
Solution Approach 1:
The system dynamically determines viewable sections based on each user's actually measured interocular distance rather than using a static reference value. The controller calculates and adjusts the viewable sections in real-time according to the user's specific anatomical characteristics, maintaining operational simplicity through automated calculation while significantly improving image alignment accuracy and reducing crosstalk for users with varying interocular distances.
4Device complexity
If no interocular distance correction is applied, then the device structure remains simple, but viewing quality and crosstalk reduction worsen
Solution Approach 1:
The display device performs self-correction by automatically measuring each user's interocular distance and using that measurement to adjust display parameters for optimal viewing quality. The system serves itself by incorporating the correction functionality within the existing device structure, minimizing additional hardware while significantly improving viewing quality and crosstalk reduction through intelligent software-based adaptation.
Data Source
AI summary
An interocular distance measurement method is implementable by a three-dimensional display device including a display, a barrier, a detector, and a controller. The display displays a parallax image. The barrier provides parallax between eyes of a user. The detector detects a position of a face of the user. The method includes displaying an image, detecting a first position, detecting a second position, and calculating an interocular distance. The displaying an image includes displaying an image for interocular distance measurement. The detecting a first position includes detecting a first position of the face of the user in response to an instruction from the user. The detecting a second position includes detecting a second position of the face of the user in response to an instruction from the user. The calculating an interocular distance includes calculating an interocular distance of the user based on the first and the second positions.