Surface Interpolation of Non-four-sided and Concave Area by NURBS Boundary Gregory Patches

Abstract

Subdivision methods are widely used for surface interpolation of a non-four-sided area. Using this method, smooth surface shape control of multiple surfaces is difficult. Therefore, we used the trim surface for interpolation of a concave area, hut shape control of the trim surface was also difficult. In this research, the surface interpolation method of non-four-sided (over 4 sided) area uses a single NBG (NURBS Boundary Gregory) patch. Moreover we apply this method for concave areas and study the ability of interpolation. Interpolation of one-sided and two-sided concave shapes is also considered. As a result, one-sided concave area can be interpolated smoothly for complex cases. Two-sided cases need further study.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2000
Accession Number
ADP012050

Entities

People

  • Hiroaki Chiyokura
  • Junji Sone
  • Kouichi Konno

Organizations

  • Toshiba

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Blending
  • Boundaries
  • Construction
  • Continuity
  • Copyrights
  • Demographic Cohorts
  • Equations
  • Interpolation
  • Silhouettes
  • Symmetry
  • Symposia
  • Technical Information Centers
  • Test And Evaluation

Fields of Study

  • Mathematics

Readers

  • Approximation Theory.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering