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47.4: Invited Paper: Wobulation: Doubling the Addressed Resolution of Projection Displays

2005; Wiley; Volume: 36; Issue: 1 Linguagem: Inglês

10.1889/1.2036298

2168-0159

Will Allen, Robert Ulichney,

Advanced Vision and Imaging

In this paper "wobulation" is presented. Wobulation is a cost-effective method of increasing the resolution of digital projection systems without changing the spatial light modulator (SLM). Multiple sub-frames of data are generated from each frame of image data. An optical image shifting mechanism displaces the projected image of each sub-frame by a fraction of a pixel. The sub-frames are projected in rapid succession, thereby appearing as if they were projected simultaneously and superimposed. The resulting image has significantly higher resolution than images produced by unwobulated systems having the same number of SLM pixels.