Jeffrey A. Bloom, a researcher in digital watermarking at the Sarnoff Corporation, began working in the field in 1998 at Signafy, Inc. and later at NEC Research Institute. He holds B.S. and M.S. degrees in electrical engineering from Worcester Polytechnic Institute and a Ph.D. from the University of California, Davis. Dr. Bloom has expertise in the areas of signal and image processing, image and video compression, and human visual models.