The proposal of the technique of error visualization for a learner´s pencil drawing

Author

Kajimoto, Nobuyuki ; Matsuda, Noriyuki ; Taki, Hirokazu ; Soga, Masato ; Takagi, Saeko ; Yoshimoto, Fujiichi ; Shima, Takashi

Author_Institution

Fac. of Syst. Eng., Wakayama Univ., Japan

fYear

2002

fDate

3-6 Dec. 2002

Firstpage

153

Abstract

In a pencil drawing class, a teacher explains often the differences between a drawing and a motif by many ways; even so, it is difficult for most learners to understand the existence of errors in his/her drawing. When a learner watches the 3D model of his/her drawing from appropriate viewpoints, he/she is immediately aware of the errors. This paper describes the technique of error visualization from a learner´s erroneous drawing. We developed a drawing advice system that consists of a 3D model converter from a 2D image and an evaluation function to estimate the effect of the 3D model. We designed a geometrical formula that expresses the relation between the geometrical feature and the error expression in the teacher´s advice.

Keywords

computer aided instruction; data visualisation; error analysis; geometry; solid modelling; 2D image; 3D model; 3D model converter; drawing advice system; error expression; error visualization; geometrical feature; geometrical formula; learner´s erroneous drawing; learner´s pencil drawing; motif; pencil drawing class; teacher; Cities and towns; Computer errors; Engineering drawings; Image analysis; Image recognition; Image texture analysis; Proposals; Prototypes; Visualization; Watches;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Education, 2002. Proceedings. International Conference on

Print_ISBN

0-7695-1509-6

Type

conf

DOI

10.1109/CIE.2002.1185889

Filename

1185889