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Silicon Graphics, the Silicon Graphics logo, OpenGL, and IRIS are registered trademarks and IRIX, Indigo² IMPACT, Indigo² Video, Indycam, Graphics Library, and Video Library are trademarks of Silicon Graphics, Inc. MII is a trademark of Panasonic, Inc. Betacam and Sony are registered trademarks and Hi-8mm and U-Matic are trademarks of Sony Corporation. S-VHS is a trademark of JVC, Inc. UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company, Ltd. X Window System is a trademark of Massachusetts Institute of Technology.

Figure 5-6, in Chapter 5, is derived from Thomas Porter and Tom Duff, “Compositing Digital Images,” published by the Association for Computing Machinery, 1984.