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Modifying image signals and optically modifying projected image dependent on orientation of screen
Modifying image signals and optically modifying projected image dependent on orientation of screen
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机译:根据屏幕方向修改图像信号并光学修改投影图像
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摘要
A projection system suitable for use in an underground station includes a projection lens system arranged to offset the projected image to reduce keystoning effects and an arrangement for modifying the electrical image signals applied to each light modulating element to further reduce keystoning effects and to take account of the curvature and orientation of the projection screen.
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