cor · ri · gen · dum n., pl.-da.
1. An error to be corrected, esp. a printer's error. 2. corrigenda. A list of errors in a book along with their corrections. [Lat., neut. gerundive of corrigere, to correct. See "correct."] (The American Heritage College Dictionary, Third Edition.)

This page contains a collection of updates and corrections (errata) to print and digital publications produced by ACM SIGGRAPH. We regret any inconvenience caused by these inaccuracies, and strive to make corrections available as best we can. If you know of inaccuracies in an article you helped to author, published by ACM SIGGRAPH, and wish to have corrections made public in this forum, please contact Stephen Spencer, ACM SIGGRAPH Director for Publications at spencer@siggraph.org.

ACM SIGGRAPH 2006 Conference Proceedings (ACM TOG 25(3))

1. Several figures in "Efficient Simulation of Large Bodies of Water by Coupling Two and Three Dimensional Techniques" by Irving, Guendelman, Losasso and Fedkiw (pp. 805-811) are incomplete in the print version. The version in the ACM Digital Library is correct, as is the version on the ACM SIGGRAPH 2006 Full Conference DVD-ROM publication.

ACM SIGGRAPH 2005 Conference Proceedings (ACM TOG 24(3))

1. Figures 4, 5 and 12 of "Lightcuts: A Scalable Approach to Illumination" by Walter, Fernandez, Arbree,Bala, Donikian and Greenberg (pp. 1098-1107) are incomplete in the print version. The version in the ACM Digital Library is correct, as is the version on the ACM SIGGRAPH 2005 Full Conference DVD-ROM publication.
   

ACM SIGGRAPH 2004 Conference Proceedings (ACM TOG 23(3))

1. Figure 8 on the back cover is not reproduced in its entirety. It can be seen, in full, as Figure 17 on page 914.
2. The final page number on the spine of the book is incorrect. The correct final page number is 928.

ACM SIGGRAPH 2003 Conference Proceedings (ACM TOG 22(3))

Several names were inadvertantly omitted from the author index. A corrected version (48KB PDF) is available.

ACM SIGGRAPH 2003 Electronic Art & Animation Catalog

Computer Animation Festival, p. 216-217: under Research and Development, Colette Mullenhoff's name should have been listed. ESC regrets the error in omission.

2003 ACM Symposium on Computer Animation

"Blowing in the Wind," (Wei, Zhao, Fan, Li, Yoakum-Slover, Kaufman), pp. 75-85 and 366.

Unembedded typefaces in the color plate page result in hard-to-read captions.

Color Plate 3's caption should read:

Streamlines originating from a vertical plane cuts through the most active flow area. Red (green) lines indicate flow toward (away from) the viewer, and blue lines indicate the flow in the plane.

Color Plate 4's caption should read:

Streamlines originating from a plane cutting through the most active flow area. Pink (light green) lines indicate upward (downward) flow. Gray lines indicate horizontal flow.

A corrected version (6.5MB PDF) of the color plate page is available to download.

ACM SIGGRAPH 2002 Conference Proceedings (ACM TOG 21(3))

A number of papers in this proceedings contain typographical errors. Unembedded typefaces in authors' final papers resulted in errors in printing. Wherever possible, a corrected version of the paper is available to download here or from the ACM Digital Library.

1. "Creating Models of Truss Structures with Optimization," (Smith, Hodgins, Oppenheim, Witkin), pp. 295-301.
   A corrected version of the paper (8.5MB PDF) is available.
2. "Dual Contouring of Hermite Data," (Ju, Losasso, Schaefer, Warren), pp. 339-346.
   A corrected version of the paper (5.3MB PDF) is available.
3. "Least Squares Conformal Maps for Automatic Texture Atlas Generation," (Lévy, Petitjean, Ray, Maillot), pp. 362-371. The authors have provided erratum and discussion on this paper.
4. "Turning to the Masters: Motion Capturing Cartoons," (Bregler, Loeb, Chuang, Deshpande) pp. 399-407.
   No corrected version has been made available to us.
5. "Synthesis of Complex Dynamic Character Motion from Simple Animations," (Liu, Popović) pp. 408-416.
   A corrected version of the paper (5.8MB PDF) is available.
6. "Interactive Motion Generation from Examples," (Arikan, Forsyth) pp. 483-490.
   The table of contents contains an incorrect title for this paper.
7. "Precomputed Radiance Transfer for Real-Time Rendering in Dynamic, Low-Frequency Lighting Environments," (Sloan, Kautz, Snyder) pp. 527-534.
   No corrected version has been made available to us.
8. "Interactive Global Illumination in Dynamic Scenes," (Tole, Pellacini, Walter, Greenberg) pp. 537-546.
   The "Acknowledgements" section should read as follows:

   Thanks to Philip Dutré, Steve Westin, Randy Fernando and the anonymous reviewers for their comments, and to Jeremy Selan and Reynald Dumont for helping with the models. Modeling was performed with 3dsMax™. Some models provided by 3DCAFE.COM, some textures provided by Paul Bourke and Eleganza.com. This work was supported by the NSF Science and Technology Center for Computer Graphics and Scientific Visualization (ASC-8920219) and MRA parallel global illumination project (ASC-9523483), and performed using equipment generously donated by the Intel Corporation and NVIDIA Corporation.

9. "Robust Treatment of Collisions, Contact and Friction for Cloth Animation," (Bridson, Fedkiw, Anderson) pp. 594-603.
   A corrected version of the paper (3.1MB PDF) is available.
10. "Eyes Alive," (Lee, Badler, Badler) pp. 637-644.
    Equations 4, 5, and 6 as printed in the paper suffer from roundoff errors. The equations, as originally printed and corrected, appear below.

    Equation 4 (original)
    Y = 0.13X⁶ - 3.16X⁵+31.5X⁴-155.87X³+394X²-465.95X+200.36

    Equation 4 (corrected)
    Y = 0.1251X⁶-3.1619X⁵+31.5032X⁴-155.8713X³+394.0271X²-465.9513X+200.3621

    Equation 5 (original)
    Y = 0.0003X²-0.18X+32

    Equation 5 (corrected)
    Y = c1*X² + c2*X + c3, where c1 = 2.5524e-4, c2 = -0.1763, and c3 = 32.2815

    Equation 6 (original)
    Y=-0.0034X³+0.23X²-6.7X+79

    Equation 6 (corrected)
    Y = d1*X⁴ + d2*X³ + d3*X² + d4*X + d5, where d1 = 1.8798e-5, d2 = -0.0034, d3 = 0.2262, d4 = -6.7021, and d5 = 78.831.

11. "Physically Based Modeling and Animation of Fire," (Nguyen, Fedkiw, Jensen) pp. 721-728.
    A corrected version of the paper (2.5MB PDF) is available.
12. "Structural Modeling of Flames for a Production Environment," (Lamorlette, Foster) pp. 729-735.
    No corrected version has been made available to us.
13. "Animation and Rendering of Complex Water Scenes," (Enright, Marschner, Fedkiw) pp. 736-744.
    A corrected version of the paper (8.4MB PDF) is available.
14. "Stylization and Abstraction of Photographs," (DeCarlo, Santella) pp. 769-776.
    A corrected version of the paper (15.3MB PDF) is available.

ACM SIGGRAPH 2000 Conference Proceedings

1. "Conservative Visibility Preprocessing using Extended Projections," (Durand, Drettakis, Thollot, Puech)pp. 239-248.
   After this paper was accepted for SIGGRAPH 2000, earlier work done by H. L. Lim was brought to the authors' attention. In order that the previous work be properly credited, the authors modified their paper to reflect this previous work. Their extended paper is available (1.2MB PDF) as well as their original paper (1.0MB PDF) as it was accepted and printed in the ACM SIGGRAPH 2000 Conference Proceedings publications.
2. "Example-Based Hinting of TrueType Fonts," (Zongker, Wade, Salesin) pp. 411-416.
   The ACM copyright notice on page 411 obscures the paper's first footnote, reproduced here in its entirety.

   Hinters express font sizes in "pixels per em," or "ppem." This measure counts the number of device pixels in the em of the font. In traditional typography, the em of a font was the height of the metal block of type. With digital typography, there is no actual metal block to measure, but the digital outlines are still expressed in coordinates relative to this hypothetical size. The point size of text refers to the size of its em expressed in points (a point is 1/72 of an inch). Thus, 12-point text corresponds to 12 ppem on a 72 dpi screen, or 100 ppem on a 600 dpi printer.

3. "Escherization," (Kaplan, Salesin) pp. 499-510.
   The caption for Figure 15(b) on page 509 is incorrect. It should read:

   A Plague of Frogs (IH6)

ACM SIGGRAPH 2000 Conference Abstracts and Applications

"LaserWho," (Donath) p. 86.
The URLs listed at the conclusion of the description of the "LaserWho" project were printed in error. They should not be considered part of the project's description. The correct project URL is http://smg.media.mit.edu/projects/LaserWho/.

ACM SIGGRAPH 93 Conference Proceedings

"Galerkin Radiosity: A Higher Order Solution for Global Illumination," (Zatz) pp. 213-220.
The form factor function F_i-j(s,t,u,v) in Equation 3 on page 214 is incorrect as stated:

The correct form factor function is as follows:

The research and results stated in the paper were reached using the correct function. This correction is available to download (17KB PDF).