Projector Group Brightness and Color Correction Method
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Solution Overview
Problem
Existing methods for adjusting the brightness and color of multiple projectors used in combination often result in a decrease in the overall brightness of the projected image, as they lower the brightness of all projectors based on the lowest brightness projector.
Innovation Solution
An information processing method that determines the brightness of a first projector group based on the brightness of their projected images and a second projector group, and adjusts the color correction values for each projector group based on the colors of their respective images, thereby maintaining the overall image brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the brightness of all projectors is adjusted based on the lowest brightness projector, then the color uniformity is improved, but the overall image brightness is reduced
Solution Approach 1:
The patent divides the projectors into multiple groups (first projector group and second projector group) with different brightness levels. Each group is adjusted independently based on its own characteristics rather than forcing all projectors to match the lowest brightness level. This segmentation allows high-brightness projectors to maintain their brightness while low-brightness projectors are adjusted, resolving the contradiction between color uniformity and overall brightness.
Solution Approach 2:
The patent applies different adjustment strategies to different projector groups based on their local characteristics. The first projector group (with higher brightness) and second projector group (with lower brightness) receive tailored correction values for color and brightness. This local quality approach ensures that each group maintains its optimal brightness while achieving color uniformity across the display surface.
2Manufacturing precision
If the brightness of projectors is adjusted to match the lowest brightness projector, then the color balance is improved, but the productivity of the projection system is reduced
Solution Approach 1:
By segmenting projectors into brightness-based groups and applying independent adjustment strategies to each group, the system avoids the productivity loss associated with reducing all projectors to the lowest brightness level. High-brightness projectors continue to operate at optimal brightness, maintaining system productivity while achieving color balance through group-specific corrections.
3Area of stationary object
If multiple projectors are used in combination, then the coverage area is increased, but the brightness uniformity across the display surface deteriorates
Solution Approach 1:
The patent segments projectors into groups based on their brightness characteristics and adjusts each group independently. This allows the system to maintain large coverage area through multiple projectors while achieving brightness uniformity across the display surface by compensating for individual projector variations through group-specific correction values.
Solution Approach 2:
The system determines correction values for color and brightness based on actual measurements of images projected by different projector groups. This feedback mechanism allows the system to identify brightness variations across the display surface and apply appropriate corrections to achieve uniformity while maintaining large coverage area.
Data Source
AI summary
An information processing method includes: determining a brightness of a first projector included in a first projector group, based on a first brightness of a first image group projected in a first area on a projection surface by the first projector group and a second brightness of a second image group projected in a second area on the projection surface by a second projector group; and determining at least one of a correction value of a color used by the first projector and a correction value of a color used by a second projector included in the second projector group, based on a color of a first image projected in the first area by the first projector and a color of a second image projected in the second area by the second projector.