H. J. Trussell is a professor and director of graduate programs in the Electrical and Computer Engineering Department at North Carolina State University. Having been awarded his PhD from the University of New Mexico, in 1976, he has many years' experience in academia and industry in the field, including Los Alamos National Laboratory, Heriot-Watt University in Edinburgh, Eastman Kodak Company in Rochester New York, and Color Savvy Systems in Ohio. His areas of specific research in image and signal processing include estimation theory, color image capture and reproduction, and image restoration. A Fellow of the IEEE, he is the recipient of two Best Paper awards with his students for papers published in the IEEE Transactions.

M.J.Vrhel is a founder of Pagemark Technology Inc. in Redmond Washington, where he is currently the Imaging Scientist. He was awarded his PhD from North Carolina State University in 1993; during his PhD, he was an Eastman Kodak Fellow. He has many years' experience working in digital imaging, including biomedical imaging and signal processing at NIH; color instrument and color software design at Color Savvy Systems Ltd, and positions at ViewAhead Technology, Conexant Systems and TAK Imaging. A senior member of the IEEE, he has a number of current and pending patents and is the author of numerous papers in the areas of image and signal processing. At the time of publication, he serves on the Board of Directors of the InterSociety Color Council.