Photometric Stereo and Oil Paintings: Techniques and Applications
G. McGunnigle, M. J. Chantler.
Heriot-Watt University, Department of Computing & Electrical Engineering, No. RM/02/1, Edinburgh, Scotland, April,
2001. [BibTeX]
Progressive 3D Reconstruction from Sketch Drawing
Beom-Soo Oh, Chang-Hun Kim.
9th Pacific Conference on Computer Graphics and Applications (PG'01), pp. 108--117, Tokyo, Japan, October 16-18,
2001. [BibTeX]
Real-Time Hatching
Emil Praun, Hugues Hoppe, Matthew Webb, Adam Finkelstein.
SIGGRAPH 2001,
2001. [BibTeX]
Real-Time Stroke Textures
Bert Freudenberg.
Technical Sketch presented at SIGGRAPH 2001,
2001. [BibTeX]
Realism, expressionism, and abstraction: applying art techniques to visualization
Theresa Marie Rhyne, David H. Laidlaw, Victoria Interrante, Christopher G. Healey, D.J. Duke.
Proceedings of the conference on Visualization '01, pp. 523--526,
2001. [BibTeX]
Rendering Effective Route Maps: Improving Usability Through Generalization
Maneesh Agrawala, Chris Stolte.
Siggraph 2001,
2001. [BibTeX]
Rendering with Parallel Stripes
Gershon Elber.
IEEE Computer Graphics and Applications, Vol. 21, No. 3, pp. 44--52, May/June,
2001. [BibTeX]
Shader Lamps: Animating Real Objects With Image-Based Illumination
Ramesh Raskar, Kok-Lim Low, Deepak Bandyopadhyay.
12th Eurographics Workshop on Rendering,
2001. [BibTeX]
Simplicial Families of Drawings
Lucas Kovar, Michael Gleicher.
14th annual ACM symposium on User interface software and technology, pp. 163--172,
2001. [BibTeX]
Simulating Decorative Mosaics
Author(s): Alejo Hausner.
Proceedings: SIGGRAPH '01: Proceedings of the 28th annual conference on Computer graphics and interactive techniques, pp. 573--580, New York, NY, USA, ACM,
2001.
[BibTeX] [DOI] 
Abstract:
This paper presents a method for simulating decorative tile mosaics. Such mosaics are challenging because the square tiles that comprise them must be packed tightly and yet must follow orientations chosen by the artist. Based on an existing image and user-selected edge features, the method can both reproduce the image's colours and emphasize the selected edges by placing tiles that follow the edges. The method uses centroidal voronoi diagrams which normally arrange points in regular hexagonal grids. By measuring distances with an manhattan metric whose main axis is adjusted locally to follow the chosen direction field, the centroidal diagram can be adapted to place tiles in curving square grids instead. Computing the centroidal voronoi diagram is made possible by leveraging the z-buffer algorithm available in many graphics cards.