Object Recognition in Range Images Using CAD Databases

Abstract

An aspect graph plays an important role in three dimensional object recognition. Its represents the three-dimensional shape of an object by its two dimensional qualitative views as seen from various viewpoints. To create the aspect graph of an object, the viewpoint space is partitioned into regions, each of which corresponds to qualitatively similar projections of the object. Algorithms for creating aspect graphs of polyhedral objects have been developed. We developed an algorithm to compute the aspect graph of a curved object. Our approach partitions the viewpoint space by computing boundary viewpoints from the shape descriptions of the object given in a computer aided design database. These computations are formulated from the understanding of visual events and the locations of corresponding viewpoints. We also studied new visual events for piecewise smooth objects.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 10, 1991
Accession Number
ADA239326

Entities

People

  • Ramesh Jain

Organizations

  • University of Michigan

Tags

Communities of Interest

  • Air Platforms
  • Autonomy

DTIC Thesaurus Topics

  • Algorithms
  • Artificial Intelligence
  • Computations
  • Computer Graphics
  • Computer Science
  • Computer Vision
  • Computer-Aided Design
  • Computers
  • Control Systems
  • Databases
  • Differential Geometry
  • Geometry
  • Image Processing
  • Object Recognition
  • Pattern Recognition
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Computer science

Readers

  • Computational Fluid Dynamics (CFD)
  • Database Systems and Applications
  • Theoretical Analysis.

Technology Areas

  • Space
  • Space - Space Objects