In 1990, he joined the faculty at Yale. Kriegman's current research focuses on vision-based mobile robot navigation and object recognition. One answer is to provide a more intelligent human-computer interface, and toward this end, Kriegman is studying how to recognize people from facial images. He has been particularly interested in issues surrounding the variation in images due to differences in lighting, e.g., sunlight at different times of day or diffuse indoor lighting. Another practical use of this technology would be for a system of ATM machines, which are located both indoors and outdoors.
Conventional techniques rely on constant lighting.
He and his wife, Teresa Gallagher, U of I professor in community health, have a 3-year old son, Bryce. Lui Sha came to the department this fall after ten years at CMU's Software Engineering Institute. Sha's area of expertise and research is in real-time systems. He is recognized the world over for two very important contributions to this field. He created the theoretical foundation that solved the Mars Pathfinder reset problem while the spacecraft was on Mars, and he developed the protocol that underlies almost all real-time operating systems in existence today.