Title
Structure grid for directional stippling
Abstract
This paper presents a novel method to convert a photograph into a stipple illustration. Our method addresses directional stippling, where the collective flows of dots are directed parallel and/or orthogonal to the local feature orientations. To facilitate regular and directional spacing of dots, we introduce the notion of a structure grid, which is extracted from the smoothed feature orientation field. We represent a structure grid as a 2D texture and develop an efficient construction algorithm that outperforms conventional Lloyd’s method in terms of the rigor of dot alignment. Moreover, the criss-crossing nature of a structure grid allows for the inclusion of line primitives, providing effective description of dark tone. Given a structure grid, we determine the appropriate positions and attributes of primitives in the final illustration via rapid pixel-based primitive rendering. Experimental results show that our directional stippling method nicely reproduces features and tones of various input images.
Year
DOI
Venue
2011
10.1016/j.gmod.2010.12.001
Graphical Models
Keywords
Field
DocType
Stippling,Hatching,Hedcut illustration,Texture synthesis
Computer vision,Feature orientation,Computer graphics (images),Computer science,Stippling,Pixel,Artificial intelligence,Rendering (computer graphics),Texture synthesis,Grid
Journal
Volume
Issue
ISSN
73
3
1524-0703
Citations 
PageRank 
References 
12
0.53
24
Authors
4
Name
Order
Citations
PageRank
Minjung Son1463.30
Yunjin Lee239921.22
Henry Kang345417.87
Seungyong Lee42130157.29