Generating Semantic Descriptions From Drawings of Scenes With Shadows

Title: en_US Generating Semantic Descriptions From Drawings of Scenes With Shadows
Creator: en_US Waltz, David L.
Date: 2004-10-20T20:06:16Z
Date Available: 2004-10-20T20:06:16Z
Date Issued: en_US 1972-11-01
Identifier: en_US AITR-271
uri: http://hdl.handle.net/1721.1/6911
Abstract: en_US 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 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.
Extent: en_US 351 p.; 15689677 bytes; 12288437 bytes
Format: application/postscript; application/pdf
Language: en_US
Relation: en_US AITR-271