Motorized Projector Camera Pair for Spatial Augmented Reality
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Solution Overview
Problem
In spatial augmented reality, small projectors limit the projection area, making it difficult to transfer a large quantity of information while maintaining portability.
Innovation Solution
A device with a projector-camera pair mounted on a motor, allowing the projection and photographing spaces to overlap, enabling the extension of the projection area and simultaneous control of the projector and camera directions to project information and interfaces directly onto objects and their surroundings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a small projector is used, then portability is improved, but projection area is reduced
Solution Approach 1:
The patent applies dimensionality change by mounting the projector on a motorized platform that can move in three-dimensional space. Instead of increasing the physical projection area of the projector itself, the system extends the effective projection area by changing the position and orientation of the projector in 3D space, allowing the projection surface to be virtually extended across a larger volume.
Solution Approach 2:
The patent introduces dynamic movement through a motorized positioning system that can adjust the projector's location and orientation in real-time. This dynamic capability allows the system to adapt the projection area to various surfaces and environments, effectively increasing the usable projection area while maintaining a compact, portable projector unit.
2Device complexity
If a small projector is used, then device complexity is reduced, but information transfer capacity is limited
Solution Approach 1:
The system compensates for the limited information capacity of a small projector by utilizing three-dimensional spatial positioning. The motorized platform can orient the projector to project information onto various surfaces at different angles and distances, effectively increasing the information transfer capacity by utilizing spatial dimensions rather than increasing projector size.
Solution Approach 2:
The motorized positioning system provides multi-functionality by enabling the small projector to serve multiple purposes: projecting onto different surfaces, adjusting projection angles, and adapting to various environmental conditions. This universality allows a compact projector to achieve the information transfer capacity of larger, fixed systems.
3Area of stationary object
If projector-camera pair is mounted on motor, then projection area is extended, but device complexity is increased
Solution Approach 1:
The patent resolves the complexity issue by utilizing 3D spatial positioning through motorized movement. Instead of physically expanding the projection area through a larger projector, the system achieves area extension by moving the projector-camera pair through three-dimensional space, projecting onto various surfaces at different positions and orientations.
Solution Approach 2:
The patent combines the projector and camera into an integrated pair mounted on the motorized platform. This merging of functions (projection and capture) within a single mobile unit allows the system to extend projection area through positioning rather than size, while the integrated design helps manage overall system complexity.
Data Source
AI summary
Disclosed are a device for user interaction with a combined projector and camera and a method and a device for user interaction for recognizing an actual object to augment relevant information on a surface or a periphery of the actual object. The device for user interaction, includes: at least one projector-camera pair in which a projector and a camera are paired; a motor mounted in the projector-camera pair and configured to control a location and a direction of the projector-camera pair; and a body including a computer capable of including a wireless network and configured to provide connection with an external device, and a projection space and a photographing space of the projector-camera pair overlap each other.