Multi-Projector Image Adjustment via Grouped Timing
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Solution Overview
Problem
In projection systems using multiple projectors, accurate measurement of projector characteristics is hindered when measurement patterns overlap, preventing correct adjustment of color and position shifts between adjacent projectors.
Innovation Solution
Classifying projectors into groups and having them project adjusting images at different timings and non-adjacent positions on the projection surface, allowing for correct measurement and reducing the time required for image adjustment by projecting adjusting images for each group separately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If measurement patterns are projected together with adjacent projectors, then the measurement process can be performed simultaneously for all projectors, but the measurement patterns overlap each other making it unachievable to measure correct characteristics
Solution Approach 1:
The patent divides the measurement process into separate segments by grouping projectors and assigning different projection timings to each group. This segmentation prevents pattern overlap while maintaining efficient simultaneous measurement within each group, resolving the contradiction between measurement efficiency and accuracy.
Solution Approach 2:
The patent implements periodic action by projecting adjusting images from different projector groups at different timings in a cyclic manner. This periodic projection schedule ensures that patterns from different groups do not overlap on the projection surface, enabling accurate characteristic measurement while maintaining overall measurement efficiency through the structured timing sequence.
2Loss of time
If all projectors project adjusting images simultaneously, then the adjustment process is faster, but overlapping patterns make correct measurement impossible
Solution Approach 1:
The patent segments the projector population into multiple groups that project adjusting images at different timings. This segmentation reduces the total adjustment time compared to sequential projection of all projectors, while ensuring measurement correctness by preventing pattern overlap through temporal separation of different groups.
Solution Approach 2:
The patent uses periodic action by organizing projectors into groups that project in a time-separated sequence. This periodic projection pattern minimizes the total adjustment time while guaranteeing reliable measurements by ensuring that patterns from different projector groups do not overlap on the projection surface during their respective projection periods.
Data Source
AI summary
A projection system includes a plurality of projectors adapted to project respective images arranged on a projection surface, a control device, and an imaging section, the plurality of projectors is classified into N (N is no smaller than 2) projector groups, the control device makes the projector groups project adjusting images on the projection surface at respective timings different from each other, and then makes the imaging section sequentially image the projection surface on which the adjusting images are projected, at least one of the N projector groups includes two or more projectors, and the two or more projectors project the adjusting images at respective positions not adjacent to each other in the projection surface.