Multi-Projection Image Correction for Homogeneous Visual Output
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Solution Overview
Problem
Conventional 3D projection systems using a single screen limit audience involvement and create heterogeneity in images due to differences in projection surface properties, leading to reduced 3D effects and discomfort from wearing polarized glasses.
Innovation Solution
An image correction system and method for multi-projection that analyzes and corrects images based on relative differences in properties of multiple projection surfaces, such as chromaticity, brightness, and distance, to produce a unified image across all surfaces, using projection devices, imaging devices, and distance measurement devices managed by an image management unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single projection device is used to project images on multiple projection surfaces, then the device complexity is reduced, but the image homogeneity deteriorates due to different properties of each projection surface
Solution Approach 1:
The patent applies local quality by correcting images individually for each projection surface based on its specific properties. The image correction unit adjusts chromaticity, brightness, and other parameters separately for each surface, ensuring that each projection surface receives customized correction parameters that compensate for its unique characteristics, thereby achieving homogeneous images across all surfaces while using a single projection device.
Solution Approach 2:
The patent employs parameter changes by modifying image parameters (chromaticity, brightness, contrast) dynamically according to the properties of each projection surface. The property analysis unit measures the actual properties of each surface, and the image correction unit adjusts the projection parameters accordingly, transforming the image characteristics to achieve uniform appearance across diverse projection surfaces.
2Ease of operation
If conventional projection systems without correction technologies are used, then the ease of operation is improved, but the image homogeneity deteriorates due to uncorrected differences in projection surface properties
Solution Approach 1:
The system implements self-service by automatically analyzing the properties of each projection surface and generating appropriate correction parameters without requiring manual intervention. The property analysis unit autonomously measures surface characteristics, and the image correction unit automatically adjusts images based on these measurements, maintaining ease of operation while achieving homogeneous images across multiple surfaces.
Solution Approach 2:
The patent applies feedback by using the property analysis unit to continuously monitor and measure the actual properties of projection surfaces, then feeding this information back to the image correction unit. This closed-loop feedback mechanism enables the system to automatically adjust correction parameters based on real surface conditions, ensuring image homogeneity while maintaining operational simplicity.
3Productivity
If images are projected without correction on projection surfaces with different properties, then the productivity is improved by avoiding correction processes, but the image homogeneity deteriorates leading to reduced audience involvement
Solution Approach 1:
The patent applies preliminary action by pre-analyzing the properties of each projection surface before actual image projection and pre-generating correction parameters. This allows the system to quickly switch between different correction profiles during operation, maintaining high productivity while ensuring image homogeneity. The correction parameters are prepared in advance based on surface measurements, enabling rapid deployment without real-time correction delays.
Data Source
AI summary
The present invention provides an image correction system and method for multi-projection, the image correction system including a plurality of projection surfaces which are installed in a single theater and a projection device which projects images on the plurality of projection surfaces, in which the images projected by the projection device on the plurality of projection surfaces are corrected based on relative differences in properties of the plurality of projection surfaces.