Projector Installation Overlap Detection Using Guide Patterns
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Solution Overview
Problem
In multi-projector systems, determining an adequate overlapping area for seamless image projection is challenging, often leading to inefficient installation processes and unintended corrections due to insufficient overlap detection.
Innovation Solution
Projectors are equipped with a pattern image projection system that includes a first pattern at the image end and a second pattern, differing in color, positioned a specific distance away, allowing users to visually determine the necessary overlap during installation, thereby facilitating correct alignment and reducing installation effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an overlapping area is provided between images from multiple projectors, then seamless image display is achieved, but it becomes difficult for users to determine the appropriate overlap size during installation
Solution Approach 1:
The patent applies preliminary action by projecting guide patterns (first pattern at the end of the image and second pattern at a predetermined distance from the end) before the actual image projection. These patterns enable users to correctly determine the overlapping area size during installation, preventing improper setup and ensuring seamless display is achieved on the first attempt.
Solution Approach 2:
The patent uses color changes by displaying the first pattern and second pattern in different colors or with different luminance levels. This visual differentiation helps users easily identify the patterns and measure the required overlap distance, making the installation process more intuitive and accurate.
2Ease of manufacture
If the overlapping area is insufficient, then installation is simpler, but correction cannot be performed appropriately leading to unintended results
Solution Approach 1:
The patent performs preliminary action by projecting guide patterns that clearly indicate the required overlapping area size before correction is attempted. This prevents users from setting up projectors with insufficient overlap, ensuring that correction can be performed accurately when needed.
Solution Approach 2:
The patent implements feedback by allowing users to visually verify the overlapping area size through the projected guide patterns. Users can see whether the overlap is sufficient before proceeding with correction, enabling them to adjust projector positions to achieve the correct overlap for proper correction.
3Productivity
If users install projectors without clear guidance on overlap, then installation process is faster, but correction may be discontinued or produce unintended results
Solution Approach 1:
The patent applies preliminary action by providing clear visual guidance through guide patterns during the installation phase. This enables users to quickly and correctly determine the overlapping area size on the first attempt, preventing the need for reinstallation or correction failures, thus maintaining both speed and reliability.
Solution Approach 2:
The patent implements self-service by enabling users to independently and accurately determine the required overlap distance using the projected guide patterns. Users can perform the alignment task themselves without requiring technical expertise or external assistance, ensuring both quick installation and reliable correction setup.
Data Source
AI summary
A projector includes a projection section that projects a first image on a projection surface, a control section that causes the projection section to project a pattern image for installation including a first pattern that is located at an end of the first image, which overlaps with a second image, and a second pattern that is so disposed that a first straight line section is located in a position separate from the end by a distance, and a correction section that corrects the first image based on a captured image containing an image of a first area of the second image, and the first area is an area that overlaps with an area having a width corresponding to the distance measured from the end of the first image in a state in which the first image and the second image overlap with each other.