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Abstract

Light elds and Lumigraphs have recently received a lot of attention in the computer graphics community, since they allow to render scenes from a database of images very e ciently. While warping based approaches are still too slow to achieve truly interactive frame rates, Lumigraph rendering can easily achieve tens of frames per second in full screen on a contemporary graphics workstation. On the down side, high resolution Lumigraphs require large amounts of storage and are expensive to acquire, while low resolutions yield low quality images with lots of blurring. In this paper, we propose to re ne an initial sparse Lumigraph through the use of a specialized warping algorithm. This algorithm increases the resolution of the Lumigraph by inserting new views, which can then be used to generate higher quality images through normal quadri-linear interpolation. This way, storage requirements and acquisition costs remain low, but image quality is increased drastically.