Projection Apparatus Corner Pointer Correction Guide
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Solution Overview
Problem
Users, especially elderly or children, face difficulties in properly adjusting the orientation of an imaging section to capture images of markers, leading to inaccurate image acquisition in existing detection apparatuses.
Innovation Solution
A display method and apparatus that project a pointer image at the corners of a projection image, allowing users to correct the shape and position of the projection image by moving the pointer image, and display guide images indicating marker positions, facilitating accurate marker placement without requiring fine adjustments of the imaging apparatus orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the imaging section orientation is adjusted manually by the user, then the captured image of markers can be acquired, but elderly or child users find it difficult to properly adjust the direction, leading to improper image acquisition
Solution Approach 1:
The system performs preliminary action by automatically determining the imaging section orientation based on the projection image position and guide image display position, eliminating the need for manual adjustment by users. The control section calculates the required orientation before image capture, ensuring accurate marker detection without requiring user expertise in adjusting the imaging section direction.
2Measurement precision
If the guide image is displayed at a fixed position on the projection surface, then users can locate markers, but the guide image does not adapt to corrected projection image positions and shapes
Solution Approach 1:
The system implements feedback by continuously updating the guide image display position based on the corrected projection image position. The control section calculates the guide image position using the relationship between the projection image corners and the imaging section orientation, ensuring the guide image remains accurately positioned even after projection correction. This closed-loop approach maintains marker placement accuracy throughout the correction process.
Solution Approach 2:
The guide image position is made dynamic rather than fixed. The control section reculates the guide image display position according to the corrected projection image characteristics and imaging section orientation, allowing the system to adapt to different projection surfaces and correction states while maintaining accurate marker guidance.
3Manufacturing precision
If the projection image shape is corrected by moving corner pointers, then the projection fits the display surface, but the guide image position becomes misaligned with the corrected corners
Solution Approach 1:
The system uses feedback to continuously recalculate and update the guide image position based on the corrected projection image corners. After users adjust corner pointers to fit the display surface, the control section computes the new guide image positions using the updated corner coordinates and imaging orientation, ensuring alignment accuracy is maintained throughout the correction process.
Solution Approach 2:
The system performs preliminary calculation of guide image positions based on the corrected projection characteristics before users attempt to place markers. By determining the guide image position in advance based on the corrected corner positions and imaging orientation, the system ensures that the guide image is already aligned correctly when users need to place markers, eliminating misalignment issues.
Data Source
AI summary
A display method including displaying a projection image on a projection surface by controlling a projection apparatus, displaying a pointer image located at a corner of the projection image by controlling the projection apparatus, performing first correction of correcting the shape of the projection image by changing the position of the corner of the projection image based on a user's operation of moving the pointer image, and displaying a guide image indicating the positions where one or more markers are put by the user by controlling the projection apparatus at a predetermined position on the projection surface with respect to the position of the pointer image moved based on the user's operation.