Multi-Projector Alignment Using Distinct Guide Colors and Margins
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Solution Overview
Problem
Existing projection systems that stack images from multiple projectors face challenges in accurately adjusting projection positions due to difficulties in aligning guides projected from different projectors, leading to potential misalignment and increased workload in position adjustments.
Innovation Solution
The system employs a first projector to project a guide at a predetermined margin from the border of the projection region without distortion correction and a second projector to project a distinguishable guide at the edge of the projection region after correction, allowing for easier alignment and reducing the need for repeated adjustments by providing a clear visual reference for alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If guides are projected from multiple projectors for position adjustment, then position adjustment capability is improved, but alignment accuracy deteriorates due to difficulty in distinguishing and aligning the guides
Solution Approach 1:
The patent applies color changes by making the first guide and second guide distinguishable from each other through different visual characteristics. The first guide is projected with a first color while the second guide is projected with a second color different from the first color, enabling users to easily distinguish between guides from different projectors and achieve accurate alignment during stack projection operations.
2Measurement precision
If the first guide is projected at the border of the projection region, then alignment reference is improved, but adjustment flexibility deteriorates due to lack of margin for enlargement
Solution Approach 1:
The patent applies preliminary action by projecting the first guide at a position spaced apart from the border of the projection region by a predetermined margin before the actual alignment process. This advance positioning provides sufficient margin that allows the first guide to be enlarged if needed during adjustment, while still maintaining its function as an accurate alignment reference when properly positioned.
Data Source
AI summary
A projection system performs projection on a projection surface using a plurality of projectors including a first projector and a second projector. The projection system projects, using the first projector, a first guide in a position a predetermined amount of a margin spaced apart from a border of a projection region where an image is projected and projects, using the second projector, a second guide distinguishable from the first guide.