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Rate My Professor Jim Kajiya

University of Utah

Ratings & reviews

5.04/23/2026

Creates dynamic and engaging lessons.

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About Jim

Jim Kajiya earned his Bachelor of Science and Master of Science degrees in computer science from the University of Utah in 1977, followed by his PhD in 1979. During his time at Utah, he developed the frame buffer concept for storing and displaying single-raster images. His doctoral research applied Lie group representation theory to model the human visual system, explaining monochrome brightness perception and predicting visual illusions. After graduation, Kajiya joined the California Institute of Technology as an assistant professor in the Computer Science Department in 1979, rising to associate professor by 1994. There, he pioneered numerous advancements in computer graphics, including nonlinear anti-aliasing algorithms for raster text display, ray tracing techniques for parametric patches (1982), procedurally defined objects (1983), volume densities (1984), and complex scenes (1986, with Timothy Kay). He introduced anisotropic reflection models (1985) and the groundbreaking rendering equation (1986), unifying rendering algorithms through an integral equation solved via Monte Carlo methods.