Multi-Projector Layout Recognition via Test Image Capture
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Solution Overview
Problem
In multi-projection systems, projectors cannot recognize their relative layout relationships, leading to uncertainty about which portion of the input image each projector is responsible for projecting.
Innovation Solution
A projector is equipped with a communication section to send a test image projection request, an imaging section to capture the test image, and a layout recognition section to determine the relative layout relationship with other projectors, allowing the creation and sharing of layout information to define projection regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple projectors are arranged in a row and/or column for image projection, then the display area and resolution are improved, but the projectors cannot recognize the relative layout relationship between them
Solution Approach 1:
The patent introduces an imaging section (camera) as an intermediary device that captures images of test patterns projected by other projectors. This captured image data serves as a mediator to convey spatial layout information between projectors, enabling the system to determine relative positions without direct communication between projectors.
Solution Approach 2:
The system implements a feedback mechanism where each projector projects a test pattern, other projectors capture these patterns through their imaging sections, and the captured images are used to calculate relative layout relationships. This closed-loop feedback enables automatic layout recognition and adaptation.
2Device complexity
If projectors cannot determine their projection region, then the system complexity is reduced, but the projection accuracy and image alignment deteriorate
Solution Approach 1:
Each projector is equipped with an imaging section that enables it to autonomously capture images of test patterns from other projectors. The layout recognition section then processes this captured data to self-determine the projector's position and projection region, making the system self-configuring without external intervention.
Solution Approach 2:
The system performs preliminary layout recognition by projecting test patterns and capturing images before actual image projection begins. This preliminary action establishes the layout information and projection regions in advance, ensuring accurate image alignment from the start of the actual projection process.
3Measurement precision
If layout recognition is implemented between projectors, then the projection region determination is improved, but the device complexity and communication requirements increase
Solution Approach 1:
The imaging section serves multiple functions: it captures test pattern images for layout recognition, can capture projected images for alignment verification, and potentially serves as a monitoring device. This multi-functionality reduces the need for separate dedicated layout detection devices, thereby limiting the increase in device complexity.
Data Source
AI summary
A projector that projects an image includes a communication section that sends a projection request command that requests another projector connected to the projector to project a test image, an imaging section that captures an image of the test image projected in response to the projection request command by the another projector, and a layout recognition section that recognizes a relative layout relationship between the projector and the another projector based on the image captured by the imaging section.