Multi-Projector Overlap Alignment Using Complementary Grid Colors
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Solution Overview
Problem
In projection display technology, aligning and blending multiple projectors onto a non-planar surface is challenging due to the need for manual adjustment and potential errors caused by low brightness and identical grid colors, leading to increased time and effort.
Innovation Solution
A projection system and method where multiple projectors simultaneously project grid pictures with complementary colors in overlap regions, allowing users to visually identify accurate blending by recognizing the recognition color, facilitating quick and effective alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple projectors project grid pictures with identical colors onto a projection surface, then the projection pictures can be projected, but the user cannot easily identify overlap regions and alignment accuracy deteriorates
Solution Approach 1:
The patent applies local quality by assigning different colors to grid lines in different regions of the projection picture. Specifically, grid lines in overlap regions are displayed in a first color (e.g., red) while grid lines in non-overlap regions are displayed in a second color (e.g., green). This local differentiation enables users to easily identify overlap regions and achieve accurate alignment without confusion from identical colors throughout the entire picture.
2Ease of operation
If manual adjustment is used to align projectors on a non-planar surface, then the projectors can be adjusted, but the adjustment time increases significantly
Solution Approach 1:
The patent implements feedback by providing real-time visual information through color-coded grid lines that immediately indicate whether regions are in overlap or non-overlap states. Users can see the current alignment status at a glance and make rapid adjustments based on this visual feedback, dramatically reducing the time required to achieve proper alignment compared to traditional manual adjustment methods that lack such immediate feedback.
3Reliability
If grid lines in overlap regions are displayed in the same color as non-overlap regions, then the projection pictures can be formed, but the user cannot distinguish overlap regions leading to adjustment errors
Solution Approach 1:
The patent directly applies color changes by displaying grid lines in overlap regions in a first color (e.g., red) and grid lines in non-overlap regions in a second color (e.g., green). This color differentiation makes overlap regions immediately visible and easy to detect, eliminating adjustment errors caused by inability to distinguish these regions and significantly improving alignment reliability.
Data Source
AI summary
A projection system and a projection method are provided. The projection system includes a first projector and a second projector. The first projector is configured to project a first grid picture onto a projection surface. The second projector is configured to project a second grid picture onto the projection surface. The second grid picture and the first grid picture are blended into a blended projection picture. The first grid picture includes a first overlap region. Grid lines of the first overlap region are displayed in a first color. The second grid picture includes a second overlap region. Grid lines of the second overlap region are displayed in a second color. The first color and the second color are complementary colors. When the blended projection picture is formed, grid lines of an overlap region of the first grid picture and the second grid picture are displayed in a recognition color.