Multi-Projector System Curved Screen Resolution Compensation
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Solution Overview
Problem
In multi-projection systems using super-wide angle lenses, the peripheral regions of projected images on curved screens often suffer from low resolution due to the inherent characteristics of fish-eye lenses, leading to a reduced overall picture quality.
Innovation Solution
A projector system comprising a curved transmissive screen and multiple projector apparatuses, where the optical axes of light from each projector intersect at a point farther than the central point of the screen, and the input picture is divided into overlapping regions to ensure uniform brightness and resolution across the projected image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a super-wide angle lens (fish-eye lens) is used to capture a wide field of view, then the field of view is increased, but the resolution in the peripheral region is reduced
Solution Approach 1:
The image captured by the super-wide angle lens is divided into multiple regions (central region and peripheral region), and different processing methods are applied to each region. The control unit performs resolution enhancement processing specifically on the peripheral region to compensate for the resolution degradation caused by the lens characteristics.
Solution Approach 2:
The control unit changes the resolution parameter of the peripheral region by performing resolution enhancement processing, thereby compensating for the inherent resolution degradation in the peripheral region caused by the super-wide angle lens.
2Adaptability or versatility
If a fish-eye lens or special lens optimized for curved screen is used, then the picture can be projected onto the curved screen, but the resolution in the peripheral region is reduced
Solution Approach 1:
The control unit divides the image into multiple regions and applies different processing methods to each region. For the peripheral region that contacts the curved screen, resolution enhancement processing is performed to compensate for the resolution degradation caused by the lens-screen optimization.
Solution Approach 2:
The control unit changes the resolution parameter of the peripheral region through resolution enhancement processing, thereby compensating for the resolution degradation that occurs when using lenses optimized for curved screens.
3Ease of operation
If multiple projector apparatuses are arranged at equal intervals, then the projection system is simple to configure, but the quality of the projected picture in the peripheral region is lowered
Solution Approach 1:
The control unit applies asymmetric processing to the images from different projectors. Specifically, different resolution enhancement processing is applied to the peripheral regions of different projectors based on their positions, thereby compensating for the non-uniform resolution degradation caused by equal-interval arrangement.
Solution Approach 2:
The control unit changes the resolution parameter of the peripheral regions of different projectors through resolution enhancement processing, thereby compensating for the picture quality degradation in the peripheral region caused by equal-interval arrangement of projectors.
Data Source
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AI summary
In a projector system (1) including a plurality of projector apparatuses (10) each projecting a picture onto a curved screen (30) of transmissive type having a convex rear side as viewed from a user, a control unit (20) divides an input picture into a plurality of pictures, providing an overlapping region between pictures, and supplies a plurality of divided pictures to the plurality of projector apparatuses (10), respectively. Optical axis of light projected by the plurality of projector apparatuses (10) intersect at a position farther than a central point of the curved screen (30), as viewed from the plurality of projector apparatuses (30) .