Projection Image Setting Assistance Using Camera Feedback
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Solution Overview
Problem
Existing methods for projecting images onto three-dimensional surfaces, such as in projection mapping, face accuracy issues when the image size is small, leading to inaccurate geometric correction, particularly for inexperienced users who struggle to set the position and size of the projection image.
Innovation Solution
A setting assistance method and apparatus that captures an image of the projection using a camera, generates a captured image, and prompts the user to adjust the position and size of the projection image through a guide image displayed on a touch panel, allowing for accurate measurement and setting even for inexperienced users by ensuring the target is large enough in the image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the camera is positioned farther from the target to capture a wider area, then the coverage area increases, but the projection image size in the captured image decreases leading to lower measurement precision
Solution Approach 1:
The system captures an initial image, calculates the projection image size relative to the captured area, and provides feedback to the user about whether the size is sufficient. Based on this feedback, the user adjusts the camera position or zoom, captures another image, and the system recalculates. This iterative feedback loop continues until the projection image size meets the required threshold, thereby resolving the contradiction between coverage area and measurement precision.
Solution Approach 2:
The system performs preliminary calculation of the projection image size based on the captured image before final measurement. By anticipating the measurement precision issue and checking the projection image size in advance, the system allows users to adjust settings before committing to the final measurement, preventing accuracy problems from arising in the first place.
2Device complexity
If the projection image size in the captured image is small, then the device complexity is reduced, but the measurement precision of the projection image position decreases
Solution Approach 1:
The system replaces complex mechanical adjustment mechanisms with computational analysis. Instead of requiring precise mechanical positioning of the camera or projector, the system uses image processing to calculate the projection image size and position from the captured image, then provides guidance for adjustment. This substitution of computational methods for mechanical precision maintains measurement accuracy while simplifying the overall system.
3Ease of operation
If the user manually adjusts the camera position and projection image size without guidance, then the ease of operation is reduced, but the measurement precision can be improved with proper positioning
Solution Approach 1:
The system automatically calculates whether the projection image size in the captured image is sufficient and provides clear feedback to the user. This feedback mechanism guides inexperienced users on how to position the camera and adjust the projection image size, making the operation easier while ensuring measurement precision requirements are met.
Solution Approach 2:
The system performs self-analysis of the captured image to determine if the projection image size is adequate. By automatically evaluating the image quality and providing guidance, the system serves itself in identifying measurement quality issues, reducing the burden on users while maintaining high measurement precision standards.
Data Source
AI summary
There is provided a setting assistance apparatus including a touch panel, which includes a display apparatus, a camera, and a processor. The processor programmed to cause the camera to capture an image of a projection image projected by a projector on a target to generate a captured image, cause the display apparatus to display the captures image, superimposes a guide image that prompts execution of the operation of setting at least one of the position or size of the projection image on the captured image, and cause the display apparatus to display the superimposed image.