WorldCat Identities

Hildreth, E. C.

Overview
Works: 5 works in 5 publications in 1 language and 5 library holdings
Roles: Author
Classifications: QP493,
Publication Timeline
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Most widely held works by E. C Hildreth
Recovering three-dimensional structure from motion with surface reconstruction by Massachusetts Institute of Technology( Book )

1 edition published in 1991 in English and held by 1 WorldCat member library worldwide

This paper addresses the computational role that the construction of a complete surface representation may play in the recovery of 3-D structure from motion. We first discuss the need to integrate surface reconstruction with the structure-from-motion process, both on computational and perceptual grounds. We then present a model that combines a feature-based structure-from-motion algorithm with a smooth surface interpolation mechanism. This model allows multiple surfaces to be represented in given viewing direction, incorporates constraints on surface structure from object boundaries, and groups image features on the basis of their 2-D image motion to segregate features onto multiple surfaces. We present the results of computer simulations that relate the behavior of this model to psychophysical observations. In a companion paper, we discuss further perceptual observations regarding the possible role of surface reconstruction in the human recovery of 3-D structure from motion
The Analysis of Visual Motion: From Computational Theory to Neuronal Mechanisms by Ellen Catherine Hildreth( Book )

1 edition published in 1986 in English and held by 1 WorldCat member library worldwide

This paper reviews a number of aspects of visual motion analysis in biological systems, from a computational perspective. We illustrate the kinds of insights that have been gained through computational studies and how those observations can be integrated with experimental studies from psychology and the neurosciences, to understand the particular computations used by biological systems to analyze motion. The particular areas of motion analysis that we discuss include early motion detection and measurement, the optical flow computation, motion correspondence, the detection of motion discontinuities, and the recovery of three-dimensional structure from motion. Keywords: Image analysis, Artificial intelligence
From vision to action: experiments and models of steering control during driving by E. C Hildreth( Book )

1 edition published in 2000 in English and held by 1 WorldCat member library worldwide

The incremental rigidity scheme for recovering structure from motion: position vs. velocity based formulations by Massachusetts Institute of Technology( Book )

1 edition published in 1985 in English and held by 1 WorldCat member library worldwide

Perceptual studies suggest that the visual system uses the rigidity assumption to recover three dimensional structure from motion. Ullman (1984) recently proposed a computational scheme, the incremental rigidity scheme, which uses the rigidity assumption to recover the structure of rigid and nonrigid objects in motion. The scheme assumes the input to be discrete positions of elements in motion, under orthographic projection. We present formulations of Ullman's method that use velocity information and perspective projection in the recovery of structure. Theoretical and computer analyses show that he velocity based formulations provide a rough estimate of structure quickly, but are not robust over an extended time period. The stable long term recovery of structure requires disparate views of moving objects. Our analysis raises interesting questions regarding the recovery of structure from motion in the human visual system. Keywords: Space perception. (AW)
The visual input to steering control by Ellen C Hildreth( Book )

1 edition published in 1996 in English and held by 1 WorldCat member library worldwide

Examines what visual information is used to plan steering maneuvers while driving
 
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Audience level: 0.88 (from 0.81 for The Analys ... to 0.98 for From visio ...)

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