Multi-Projector Region Alignment Using Color Overlap Markers
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Solution Overview
Problem
Existing projection technologies using single-color markers for adjusting projection regions are inaccurate and time-consuming due to reliance on marker overlap, leading to inefficient projection adjustments.
Innovation Solution
An electronic device and method that uses multiple colored markers to identify and adjust projection regions by projecting test images with different colored markers, allowing for precise alignment and synchronization of multiple projectors through a camera and processor-controlled mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single-color markers are used for projection region adjustment, then the adjustment process is simple, but the accuracy and speed of identifying overlapping regions are low
Solution Approach 1:
The patent applies color changes by using markers of different colors (first color, second color, and third color) to represent different projection regions and their overlaps. The capturing device detects these colored markers to identify overlapping regions between multiple projection devices, significantly improving identification accuracy compared to single-color markers.
2Device complexity
If single-color markers are used for projection region adjustment, then the system is easy to implement, but the adjustment time is prolonged
Solution Approach 1:
By using multiple colors to encode different regions and overlap states, the system can quickly identify overlapping regions without manual adjustment. The capturing device detects colored markers and determines overlaps automatically, reducing adjustment time while maintaining system simplicity.
3Measurement precision
If multiple colors are used to identify overlapping regions, then the accuracy of projection region adjustment is improved, but the device complexity increases
Solution Approach 1:
The patent uses a color-based encoding system where first color markers represent first projection regions, second color markers represent second projection regions, and third color markers represent overlapping regions. This approach improves identification accuracy while keeping the system relatively simple by using color as the differentiating feature rather than complex geometric or positional encoding.
4Productivity
If multiple colors are used to identify overlapping regions, then the speed of projection synchronization is improved, but the device complexity increases
Solution Approach 1:
The color-based marker system enables rapid identification of overlapping regions by the capturing device. Different colors allow for immediate visual and computational differentiation of regions, accelerating the synchronization process between multiple projection devices without requiring complex mechanical or electronic adjustment mechanisms.
Data Source
AI summary
An electronic device and a control method thereof are provided. The control method of an electronic device includes: projecting, by the electronic device, a first test projection image including at least one marker of a first color while an external device projects a second test projection image including at least one marker of a second color that is different from the first color; obtaining a captured image of projection regions on which the first test projection image and the second test projection image are projected while the projection region on which at least one of the first test projection image or the second test projection image is projected is changed; and identifying an overlapping region between the first test projection image and the second test projection image based on at least one of (1) a third marker of a third color or (ii) the marker of the first color and the marker of the second color, in the captured image, the marker of the third color being the marker of the first color and the marker of the second color overlapping each other, and the third color being different from the first color and the second color.