Feature Extraction from Object with Free Form Surfaces.

Constrained Object Reconstruction Incorporating Free-form Surfaces

This paper addresses the problem of integrating free-form surfaces in a constrained object reconstruction. The objects of interest here have both simple shaped surfaces (e.g. planes and quadrics) and free-from surfaces. The goal is to ensure a global optimization of the object shape where neighbourhood relationships between free-from surfaces and analytic surfaces are also satissed. The scheme ...

Matching free-form surfaces

In this work, the matching problem between two free-form parametric surfaces, S 0 (u, v) and S 1 (u, v), has been considered in the context of a "rst stage of the metamorphosis process, which is de"ned as gradual and continuous transformation of one key shape into another. A method is presented to approximate the two reparametrization functions, r(u, v) and t(u, v), via a discrete sampled set o...

Machining Free-Form Surfaces

This paper presents an analytical method for planning an efficient tool-path in machining free-form surfaces on 3-axis milling machines. This new approach uses a nonconstant offset of the previous tool-path, which guarantees the cutter moving in an unmachined area of the part surface and without redundant machining. The method comprises three steps: (1) the calculation of the tool-path interval...

Information Extraction from Patients' Free Form Documentation

The paper presents two rule-based information extraction (IE) from two types of patients’ documentation in Polish. For both document types, values of sets of attributes were assigned using specially designed grammars. 1 Method/General Assumptions Various rule-based, statistical, and machine learning methods have been developed for the purpose of information extraction. Unfortunately, they have ...

A Free Form Feature