Geodesic
A Sketch Interpreter System with Shading and Cross Section Lines
Journal for geometry and graphics, Tome 9 (2005) no. 2, pp. 177-189.

Voir la notice de l'article provenant de la source Heldermann Verlag

We present a sketch interpreter system with shading and cross section lines for 3D freeform design. The input strokes are classified into three types: outlines (contour lines), shading lines and cross section lines. The outline is used to generate the basic rounded shape. The shading lines and cross section lines are used as control lines that are drawn inside the contour to modify the 3D shape. In order to effectively extract 3D information from the shading and cross section lines, we analyze different representations and deformations of the shading and cross section lines and classify them into three cases: convex, concave and 'upheaving'. Each deformation is drawn by hand and transferred to a 3D shape according to the rules proposed in this paper. We evaluate our sketch interpreter system for various objects from concept sketches and present our results.
Classification : 68U05
Mots-clés : Sketch, freehand drawing, shading, cross section lines 
@article{JGG_2005_9_2_JGG_2005_9_2_a5,
     author = {K. Kondo and H. Shizuka and W. Liu and K. Matsuda },
     title = {A {Sketch} {Interpreter} {System} with {Shading} and {Cross} {Section} {Lines}},
     journal = {Journal for geometry and graphics},
     pages = {177--189},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {2005},
     url = {http://geodesic.mathdoc.fr/item/JGG_2005_9_2_JGG_2005_9_2_a5/}
}
TY  - JOUR
AU  - K. Kondo
AU  - H. Shizuka
AU  - W. Liu
AU  - K. Matsuda 
TI  - A Sketch Interpreter System with Shading and Cross Section Lines
JO  - Journal for geometry and graphics
PY  - 2005
SP  - 177
EP  - 189
VL  - 9
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JGG_2005_9_2_JGG_2005_9_2_a5/
ID  - JGG_2005_9_2_JGG_2005_9_2_a5
ER  - 
%0 Journal Article
%A K. Kondo
%A H. Shizuka
%A W. Liu
%A K. Matsuda 
%T A Sketch Interpreter System with Shading and Cross Section Lines
%J Journal for geometry and graphics
%D 2005
%P 177-189
%V 9
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JGG_2005_9_2_JGG_2005_9_2_a5/
%F JGG_2005_9_2_JGG_2005_9_2_a5
K. Kondo; H. Shizuka; W. Liu; K. Matsuda . A Sketch Interpreter System with Shading and Cross Section Lines. Journal for geometry and graphics, Tome 9 (2005) no. 2, pp. 177-189. http://geodesic.mathdoc.fr/item/JGG_2005_9_2_JGG_2005_9_2_a5/