Projection Control Device Overlapping Range Detection
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Solution Overview
Problem
Existing projection systems with multiple units struggle to accurately detect user operations in overlapping projection ranges, as they do not effectively image and process the operating parts within these overlapping areas.
Innovation Solution
A control device and method that utilize multiple imaging units to image overlapping projection ranges at slightly different timings, generating a joined image to detect user operations with high accuracy, and execute corresponding controls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operating part is displayed in the overlapping part of projection ranges, then user interaction capability is improved, but detection accuracy deteriorates because multiple imaging units capture the same area at different timings making it difficult to determine if an operation occurred
Solution Approach 1:
The system dynamically adjusts the imaging timing of each imaging unit based on the detection results of other units. When one imaging unit detects an operation, it triggers re-imaging by other units at different timings to confirm the operation, transforming a static simultaneous imaging system into a dynamic adaptive imaging system that resolves detection conflicts
Solution Approach 2:
The system implements feedback by using detection results from one imaging unit to control the imaging operation of other units. When an operation is detected in the overlapping area, the system feeds back this information to trigger additional imaging at different timings, creating a closed-loop detection system that improves accuracy while maintaining ease of operation
2Reliability
If multiple imaging units image the overlapping part simultaneously, then detection coverage is improved, but processing complexity increases due to the need to handle and compare multiple images captured at the same time
Solution Approach 1:
Instead of simultaneous imaging, the system uses periodic sequential imaging where each imaging unit captures images at different time intervals. This periodic action maintains comprehensive detection coverage while simplifying processing by eliminating the need to handle multiple simultaneous images, reducing processing complexity while preserving reliability
3Speed
If imaging frequency is increased to capture fast user operations, then detection speed is improved, but energy consumption and processing load increase
Solution Approach 1:
The system performs preliminary imaging at normal frequency to establish a baseline, then only increases imaging frequency when an operation is detected in the overlapping area. This preliminary action approach maintains low energy consumption during normal operation while enabling fast detection when needed, balancing detection speed with energy efficiency
Data Source
AI summary
A projection system includes a set of a first projection apparatus and a first imaging unit and a set of a second projection apparatus and a second imaging unit. A first projection range of the first projection apparatus and a second projection range of the second projection apparatus have an overlapping part. A control device of the projection system determines whether or not an operation for an operating part projected to the overlapping part is performed based on a captured image of the first projection range and a captured image of the second projection range, and executes a predetermined control in a case where it is determined that the operation is performed.