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Ruth Rosenholtz

Principal Research Scientist


Ruth Rosenholtz
Dept. of Brain and Cognitive Sciences
Massachusetts Institute of Technology
43 Vassar St., Building 46-4115
Cambridge, MA 02139

Phone: (617) 324-0269
email: r r u t h @ m i t . e d u
Web: http://web.mit.edu/rruth/www

My lab studies human vision, including visual search, peripheral vision, perceptual organization, and the impact of visual clutter on task performance. We take a three-pronged approach: 1) Computational modeling (computer vision-based, ideal observers, Monte Carlo simulations, and neurobiologically-inspired); 2) Behavioral experiments; and 3) Applying our models and understanding of human vision to applications such as image compression, design of user interfaces, and design of information visualizations.

Research Interests
Publications
Curriculum Vitae


Past and Present Research Focus

    • Does the visual system collect summary statistics in early vision?
    • A model of peripheral vision
    • Predicting recognition in the periphery
    • Predicting visual search performance
    • Predicting perception of visual illusions
    • Shape-from-texture
    • Models for texture segmentation.
    • Segmenting images into textured and non-textured regions.
    • Visual search in cluttered environments – what is clutter?
    • Models for visual search and “popout.”
    • “Asymmetries” in visual search
    • Effects of background color on color search
  • Perceptually-based image compression and image quality
    • Reducing blocking effects in block transform coded images.
    • Perceptually based coding of still images.

Biographical Information

  • B.S. in Engineering, Swarthmore College, 1988. Senior design project: “Computer recognition of facial features.” Advisor: Stephen Platt.
  • M.S. in Electrical Engineering, University of California, Berkeley, 1991. Thesis: “Iterative procedures for reduction of blocking effects in transform image coding.” Advisor: Avideh Zakhor.
  • Ph.D. in Electrical Engineering, University of California, Berkeley, 1994. Thesis: “Local shape from texture.” Advisor: Jitendra Malik.
  • Eliahu Jury Award for excellence in control, systems, and signal processing research, University of California, Berkeley, 1995.
  • Post-doc, Helmholtz Institute, Utrecht University, the Netherlands, 1995. Work on recovery of structure and reflectance from image sequences of moving objects. Mentor: Jan J. Koenderink.
  • NRC Associate, NASA Ames, 1996. Work on perceptually-based coding of images. Mentor: Andrew B. Watson.
  • Member of research staff, Xerox PARC, 1997 to 2001.
  • Area manager, Image Components & Services, Palo Alto Research Center, 2001-2003.
  • Principal Research Scientist, Department of Brain and Cognitive Science at MIT, August 2003 to present.

My students and collaborators

 
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