On the silhouette cartoon animation

Author

Kunii, Tosiyasu L. ; Maeda, Takao

Author_Institution

Dept. of Comput. Software, Univ. of Aizu, Wakamatsu City, Japan

fYear

1996

fDate

3-4 Jun 1996

Firstpage

110

Lastpage

117

Abstract

This research addresses the issue of human visual cognitive capability to identify an object irrespective of object orientation throughout the course of object movement in computer animation. The identification is by cognizing the shape characteristics that are independent of the object orientation as invariants. Taking a simple case of a silhouette cartoon animation and having a dolphin as a popular example of an object that changes the orientation while swimming and also jumping up into the air, we show that the orientation independent invariants are the critical points, namely the peaks of the convex portion of the object and the pits of concave portions, and that they are derived from a graph of the curvature change along the boundary of the object

Keywords

computational geometry; computer animation; entertainment; human factors; user interfaces; visual perception; computational geometry; computer animation; concave portions; convex portion; dolphin; graph; human visual cognition; jumping; object identification; object movement; orientation independent invariants; research; shape characteristics; silhouette cartoon animation; swimming; Animation; Cities and towns; Computer science; Dolphins; Geometry; Humans; Organisms; Shape; Software; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Animation '96. Proceedings

Conference_Location

Geneva

ISSN

1087-4844

Print_ISBN

0-8186-7588-8

Type

conf

DOI

10.1109/CA.1996.540493

Filename

540493