An earlier version is available. C. Robertson, R. B. Fisher, N. Werghi, and A. Ashbrook. C. Robertson, R. B. Fisher, D. Corne, N. Werghi, and A. P. Ashbrook. C. Robertson, R. B. Fisher, N. Werghi, and A. P. Ashbrook. Goteborg, Sweden, pp 1-16, Springer LNCS 1596, May 1999, available here.
Nearby part features cause inter-reflections and occlusions.
Thus, finding manufactured features is much more difficult than the usual surface finding since the data is extremely noisy or sometimes missing altogether. First we extract out the supporting surface for the artifact and disregard the other surfaces comprising the model. Then we look for discontinuities in that surface that, together with the original surface curvature, give us hints as to what artifacts might be present. These models might be used to visualise the object on a computer display or used in a simulation for science or engineering purposes. Fusing multiple views generally assumes that the part does not change its shape between views, so that feature registration is simplified, and the assumption of rigid geometry provides a common reference frame into which all features can be placed.