Projector Automatic Alignment via Removable Object Detection
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Solution Overview
Problem
Users of existing projectors need to spend time and effort to manually adjust the projection area and position when setting up a projector, especially when the positional relationship between the projector and the projection surface changes.
Innovation Solution
A projector equipped with a projection unit, image pickup unit, detection unit, and adjustment unit that automatically adjusts the projection position based on the position of a removable object on the projection surface, allowing for automatic alignment and adjustment of the projection area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual remote controller operation is used to set projection area, then projection position can be adjusted, but user time and effort increases
Solution Approach 1:
The projector automatically detects the projection surface and adjusts projection parameters without user intervention. The image pickup unit captures the projection surface, the detection unit identifies its position and orientation, and the adjustment unit automatically configures projection settings, enabling the system to serve itself rather than requiring manual remote controller operation
Solution Approach 2:
The manual mechanical operation of remote controller buttons is replaced by an automated optical-detection system. The image pickup unit (camera) detects the projection surface, and through image processing, the system automatically determines projection parameters, substituting the mechanical remote control interface with an automated vision-based system
2Adaptability or versatility
If remote controller operation is required when positional relationship changes, then projection position can be re-adjusted, but user effort and time increase
Solution Approach 1:
The system continuously monitors the projection surface position through the image pickup unit and automatically adjusts projection parameters in response to detected changes. This closed-loop feedback mechanism allows the projector to adapt to positional relationship changes without requiring user intervention, maintaining adaptability while eliminating re-adjustment time
Solution Approach 2:
The projection system transitions from a static configuration requiring manual re-adjustment to a dynamic system that automatically adapts to changing conditions. The real-time detection and adjustment capabilities enable the projector to respond dynamically to positional changes, maintaining optimal projection without user effort
Data Source
AI summary
A technique can reduce the time and effort of a user to project a projection image in a projection area on a projection surface. A projector includes: a projection unit projecting a projection image onto a projection surface; an image pickup unit picking up an image of the projection surface and generating a picked-up image; a detection unit detecting a position of a removable object arranged at the projection surface, based on the picked-up image; and an adjustment unit adjusting a projection position of the projection image on the projection surface, based on the position of the object.