Projection Device Spatial AR Display Multi-User Sharing
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Solution Overview
Problem
Existing projection technologies require multiple devices for each user, making it inconvenient for multiple users to share a display of virtual objects superimposed on real space images.
Innovation Solution
A projection device and display system that includes a camera to capture images of a real space and a projector to project images generated based on the captured images, allowing for the direct display of information about objects in the real space without the need for individual devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple terminal devices or HMDs are used to display virtual objects for multiple users, then each user can view the display, but the device complexity increases and ease of operation decreases
Solution Approach 1:
The patent merges multiple display functions into a single projector system. The projector projects images onto a shared surface in the real space, allowing multiple users to simultaneously view the same augmented reality display without needing individual terminal devices or HMDs. This combining of display outputs resolves the contradiction by reducing device count while maintaining multi-user accessibility.
Solution Approach 2:
The patent transitions from two-dimensional screen displays on individual devices to three-dimensional spatial projection in the real world. By projecting images onto physical surfaces in the shared environment, the system creates a common viewing space that multiple users can access simultaneously, eliminating the need for multiple separate devices.
2Ease of operation
If individual terminal devices are required for each user, then accurate display is achieved, but the ease of operation for sharing decreases
Solution Approach 1:
The patent introduces a shared projection surface as an intermediary between the projector and multiple users. This surface acts as a common medium that receives the projected image and presents it to all users simultaneously, maintaining display accuracy while enabling convenient sharing without requiring each user to operate their own device.
3Adaptability or versatility
If terminal devices are used for AR display, then virtual objects can be superimposed on real space, but multiple users cannot easily share the display
Solution Approach 1:
The patent makes the projector system universal by enabling it to serve multiple users simultaneously through spatial projection. The same projector and projection surface serve as the display medium for all users, eliminating the need for multiple specialized devices while maintaining the augmented reality functionality of superimposing virtual objects on the real space.
Data Source
AI summary
A projection device includes a camera that captures an image of a real space in which an object is disposed and a projector that projects an image indicated by video data generated based on the captured image by the camera onto an image capturing region of the camera in the real space. The video data is, for example, a pointing image such as an arrow or a finger point pointing to an object disposed in the real space. The projection device detects the object by image recognition from the captured image and generates video data for displaying a pointing image pointing to the object at a position superimposed on or adjacent to the object. When the image indicated by the video data generated is projected from the projector, the pointing image is displayed at a position superimposed on or adjacent to the object in the real space.