Interactive Stereo Display 3D Coordinate Calculation
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Solution Overview
Problem
Current 3D interactive technologies are limited by large equipment volume, viewing angle constraints, and the need for additional devices, making them unsuitable for multi-touch functions and prone to inconvenience and theft, especially in public settings.
Innovation Solution
An interactive stereo display system that calculates 3D coordinates using a method involving multiple light sources, a color filter, and an optical sensor array, allowing for multi-touch functionality without increasing the display panel's volume or requiring additional devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If video cameras are used to capture 3D spatial position, then image quality and multi-touch function are achieved, but equipment volume increases
Solution Approach 1:
The patent extracts the light source function from separate interactive devices and integrates it directly into the display panel structure. The display panel emits light patterns that can be detected by sensors in the panel itself, eliminating the need for external video cameras and additional interactive devices, thus reducing overall equipment volume while maintaining 3D spatial detection capability
Solution Approach 2:
The display panel is designed to perform multiple functions: it serves as both the visual display and the active sensing interface. By integrating light emission and detection capabilities into the panel itself, the system achieves 3D interaction without requiring separate dedicated sensing equipment, making the display panel a universal interactive device
2Measurement precision
If video cameras are used for 3D interaction, then space data can be obtained, but viewing angle limitation prevents detection of images close to the display
Solution Approach 1:
Instead of using external cameras to capture images from a fixed viewpoint, the patent inverts the approach by having the display panel itself emit light patterns and detect reflections from objects at various positions. This allows the system to capture spatial information from multiple angles simultaneously, overcoming the viewing angle limitation of traditional camera-based systems
3Ease of operation
If additional devices like gloves with gyro meters are used, then 3D interaction can be achieved, but user convenience deteriorates and devices are prone to theft
Solution Approach 1:
The display panel performs self-service by emitting light patterns and detecting reflections automatically without requiring users to wear additional devices. The system autonomously captures 3D spatial information through the light patterns reflected from objects or hands, eliminating the need for specialized interactive gloves or headsets that users must wear and carry
4Volume of stationary object
If optics sensors are integrated into displays during manufacturing, then equipment volume is reduced and 2D/3D touch actions become smooth, but multi-touch function cannot be achieved
Solution Approach 1:
The patent introduces dynamic light pattern emission capability to the display panel, allowing it to actively project structured light patterns rather than passively displaying static images. This dynamic light emission enables the panel to interact with objects in 3D space and distinguish between multiple touch points, achieving multi-touch functionality while maintaining compact integration
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate measurement of distances and precise interaction with the display panel, supporting multi-touch functions without altering the panel's structure or increasing its size, while allowing continuous interaction and identifying circle objects corresponding to each light source.
Implementation Method 1
A first image is obtained by capturing the first light filtered by the color filter, and a second image is obtained by capturing the second light filtered by the color filter
Implementation Method 2
an optical sensor array... capturing the first light filtered by the color filter to obtain a first image and capturing the second light filtered by the color filter to obtain a second image
Data Source
AI summary
An interactive stereo display system and a method for calculating a three-dimensional (3D) coordinate are provided. The interactive stereo display system includes a plurality of interactive devices, a stereo display panel, and a processing unit. When the stereo display panel is irradiated by a light radiated from a light source of each interactive device, an image of each light filtered by a color filter is captured by an in-cell type optical sensor array. After receiving the images, the processing unit determines overlapping circle objects in each image and identifies the circle object formed by each light source according to a light intensity value at the center of each circle objects. Accordingly, the 3D coordinate of each interactive device relative to the stereo display panel can be calculated according to the center and a radius of each circle object corresponding to each light source.