Reconstruction with blobby shapes

Wen Eng Ong, Rick Beatson, Christopher John Price


We investigates fitting a surface to an object using blobby models as a coarse level approximation. The aim is to achieve a given quality of approximation with relatively few parameters. This process involves an optimisation procedure where a number of blobs (ellipses or ellipsoids) are separately fitted to a cloud of points. Then the optimised blobs are combined to yield an implicit surface approximating the cloud of points. The results for our test cases in two and three dimensions are very encouraging. For many applications, the coarse level blobby model itself will be sufficient. For example, adding texture on top of the blobby surface can give a surprisingly realistic image.

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