Division of Informatics
Forrest Hill & 80 South Bridge

Research Paper #867
Title:	Simultaneous Registration of Multiple Range Views for Use in Reverse Engineering of Cad Models
Authors:	Eggert,D; Fitzgibbon,AW; Fisher,RB
Date:	Sep 1997
Presented:	To appear in Computer Vision, Image Understanding
Keywords:
Abstract:	When reverse engineering a CAD model,it is necessary to integrate information from several views of an object into a common reference frame. Given a rough initial alignment of local 3-D shape data in several images, further refinement is achieved using an improved version of the recently popular Iterative Closet Point algorithm. Improved data correspondence is determined by considering the merging data sets as a whole. A potentially incorrect distance thrshold for removing outlier correspondences is not needed as in previous efforts. Incremental pose adjustments are computed simultaneously for all data sets, resulting in a more gloally optimal set of transformations. Individual motion updates are computed using forece-based optimization, by considering the data sets show that convergence is possible even for very rough initial positionings, and that the final registration accurac typically approaches less than one quarter of the interpoint sampling resolution of the images.
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Division of InformaticsForrest Hill & 80 South Bridge