Projector Control Method for Target Image Size Consistency
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Solution Overview
Problem
Existing projector technologies fail to maintain the desired size of a target image when its size is changed within an input image, leading to inconsistent projection sizes and inability to display the image as intended by the user.
Innovation Solution
A control method for projectors that involves receiving the designation of a target image size, calculating the new size of the target image in the projection, and adjusting the enlargement ratio based on a specific ratio to ensure the target image is displayed in the desired size, using either optical adjustments or image processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the projector uses optical enlargement or reduction to keep a dimension on a display surface constant for a display target image, then the display target image can be maintained in actual size, but when the size of the target image included in an input image is changed, the size of the target image cannot be kept constant in the projection image
Solution Approach 1:
The projector calculates the size of the target image in the projection image when the input image size changes, compares it with the desired first size, and adjusts the enlargement ratio accordingly. This feedback mechanism ensures the target image maintains the desired size despite input image size variations.
Solution Approach 2:
The enlargement ratio is dynamically adjusted based on the relationship between the input image size and the projection image size. The system continuously adapts the enlargement ratio to maintain consistent target image size, transforming a static projection system into a dynamic one that responds to size changes.
2Manufacturing precision
If the projector adjusts the enlargement ratio to maintain target image size, then the target image can be displayed in the desired size, but additional calculation and control steps are required
Solution Approach 1:
The projector automatically calculates the required enlargement ratio adjustments without external intervention. The system self-adjusts by computing the ratio between the desired target image size and the actual target image size in the projection, eliminating the need for manual calibration or complex external control mechanisms.
Solution Approach 2:
The system changes the enlargement ratio parameter based on calculated values to maintain target image size consistency. By adjusting this single key parameter, the system achieves precise size control without requiring complex structural modifications or multiple control parameters.
Data Source
AI summary
A control method for a first projector includes receiving designation of a head image of a third user image to be projected in a first size in a projection image in a second user group image, calculating a second size indicating a size of the head image in the projection image when the size of the head image is changed, and adjusting, based on a first ratio, which is a ratio of the second size to the first size, an enlargement ratio of the projection image with respect to the second user group image such that the head image is displayed in the first size in the projection image.