Accession Number:

AD0754080

Title:

Generating Semantic Descriptions from Drawings of Scenes with Shadows

Descriptive Note:

Doctoral thesis

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE ARTIFICIAL INTELLIGENCE LAB

Personal Author(s):

Report Date:

1972-11-01

Pagination or Media Count:

352.0

Abstract:

The research reported here concerns the principles used to automatically generate three-dimensional representations from line drawings of scenes. The computer programs involved look at scenes which consist of polyhedra and which may contain shadows and various kinds of coincidentally aligned scene features. Each generated description includes information about edge shape convex, concave, occluding, shadow, etc., about the decomposition of the scene into bodies, about the type of illumination for each region illuminated, projected shadow, or oriented away from the light source, and about the spacial orientation of regions. The methods used are based on the labeling schemes of Huffman and Clowes this research provides a considerable extension to their work and also gives theoretical explanations to the heuristic scene analysis work of Guzman, Winston, and others.

Subject Categories:

  • Computer Programming and Software
  • Bionics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE