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Steven A. Shafer
Researcher at Carnegie Mellon University
Publications - 67
Citations - 3493
Steven A. Shafer is an academic researcher from Carnegie Mellon University. The author has contributed to research in topics: Color normalization & Color image. The author has an hindex of 28, co-authored 67 publications receiving 3431 citations. Previous affiliations of Steven A. Shafer include Sandia National Laboratories & Microsoft.
Papers
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Book ChapterDOI
Error modeling in stereo navigation
Larry Matthies,Steven A. Shafer +1 more
TL;DR: In this article, a 3D Gaussian distribution is used to model triangulation error in stereo vision for a mobile robot that estimates its position by tracking landmarks with on-board cameras.
Book
Error modeling in stereo navigation
Larry Matthies,Steven A. Shafer +1 more
TL;DR: Simulations show that, compared to scalar error models, the 3D Gaussian reduces the variance in robot position estimates and better distinguishes rotational from translational motion.
Proceedings ArticleDOI
Depth from focusing and defocusing
Yalin Xiong,Steven A. Shafer +1 more
TL;DR: A model of the blurring effect that takes geometric blurring as well as imaging blurring into consideration in the calibration of the Blurring model is proposed, and a maximal resemblance estimation method is proposed to decrease or eliminate the window effect.
Proceedings ArticleDOI
An architecture for sensor fusion in a mobile robot
TL;DR: This paper describes sensor fusion in the context of an autonomous mobile robot, and describes the software architecture of the NAVLAB, consisting of a "whiteboard" system called CODGER that is similar to a blackboard but supports parallelism in the knowledge source modules, and an organized collection of perceptual and navigational modules tied together by the COD GER system.