Multi-Projector Image Alignment via Captured Orientation Feedback
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Solution Overview
Problem
Existing image projection systems with multiple devices face challenges in aligning images projected in different orientations, leading to poor workability and visibility when creating a unified image.
Innovation Solution
An image adjustment system that includes multiple image projection devices, an imaging device, and a controller that calculates and adjusts the orientation of each image based on first rotation information to align it with a reference orientation, using mapping and conversion information to ensure proper alignment and smooth display across projection ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple image projection devices are used to project images in different orientations, then the coverage area and display flexibility are improved, but the alignment accuracy and workability of image adjustment deteriorate
Solution Approach 1:
The patent introduces a controller as an intermediary device that receives captured images from the imaging device, calculates rotation information, and transmits adjusted image signals to the image projection devices. This mediator coordinates the orientation of multiple projection devices, enabling accurate alignment across different projection angles and surfaces while maintaining large coverage area.
2Device complexity
If manual image orientation adjustment is performed for each projection device, then device complexity is reduced, but the time required for adjustment and operational efficiency worsen
Solution Approach 1:
The system employs a feedback mechanism where the imaging device captures the actual projection output, the controller analyzes the captured image to determine orientation, and automatically adjusts the image signal sent back to the projection device. This closed-loop feedback eliminates manual adjustment time while keeping individual device complexity low.
Solution Approach 2:
Each image projection device automatically adjusts its own image orientation based on rotation information calculated by the controller. The devices perform self-service orientation correction without requiring complex external adjustment mechanisms, reducing both device complexity and adjustment time.
3Manufacturing precision
If automatic orientation calculation and adjustment is implemented, then image alignment precision and workability are improved, but device complexity and control system requirements worsen
Solution Approach 1:
The patent merges the control functions of multiple image projection devices into a single centralized controller. This consolidation achieves high alignment precision through coordinated control while avoiding the complexity of distributing sophisticated control systems to each individual device. The controller integrates image capture data, calculates rotation information, and manages all projection devices uniformly.
Data Source
AI summary
An image adjustment system includes: a plurality of image projection devices that respectively project a plurality of images in a plurality of projection ranges; an imaging device that captures a region containing the plurality of projection ranges to obtain a captured image; and a controller that controls the plurality of image projection devices and the imaging device. The controller calculates first rotation information representing an orientation of each of the plurality of images with respect to a first reference orientation of the captured image and adjusts display of each of the plurality of images based on the first rotation information to cause the orientation and the first reference orientation to be in a predetermined relation with each other.