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Motion Field and Optical Flow: Qualitative Properties
(1986-12-01)
In this paper we show that the optical flow, a 2D field that can be associated with the variation of the image brightness pattern, and the 2D motion field, the projection on the image plane of the 3D velocity field of ...
The Analysis of Visual Motion: From Computational Theory to Neuronal Mechanisms
(1986-12-01)
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 ...
Computations in the Vertebrate Retina: Gain Enhancement, Differentiation and Motion Discrimination
(1986-09-01)
The vertebrate retina, which provides the visual input to the brain and its main interface with the outside world, is a very attractive model system for approaching the question of the information processing role of ...
Regularization Theory and Shape Constraints
(1986-09-01)
Many problems of early vision are ill-posed; to recover unique stable solutions regularization techniques can be used. These techniques lead to meaningful results, provided that solutions belong to suitable compact ...
Boolean Classes
(1986-09-01)
Object-oriented programming languages all involve the notions of class and object. We extend the notion of class so that any Boolean combination of classes is also a class. Boolean classes allow greater precision and ...
Stereo and Eye Movement
(1988-01-01)
We describe a method to solve the stereo correspondence using controlled eye (or camera) movements. These eye movements essentially supply additional image frames which can be used to constrain the stereo matching. ...
Visual Attention in Brains and Computers
(1986-09-01)
Existing computer programs designed to perform visual recognition of objects suffer from a basic weakness: the inability to spotlight regions in the image that potentially correspond to objects of interest. The brain's ...
CREF: An Editing Facility for Managing Structured Text
(1985-02-01)
This paper reports work in progress on an experimental text editor called CREF, the Cross Referenced Editing Facility. CREF deals with chunks of text, called segments, which may have associated features such as keywords ...
Optimal Bayesian Estimators for Image Segmentation and Surface Reconstruction
(1985-04-01)
sA very fruitful approach to the solution of image segmentation andssurface reconstruction tasks is their formulation as estimationsproblems via the use of Markov random field models and Bayes theory.sHowever, the ...
GPSG-Recognition is NP-Hard
(1985-03-01)
Proponents of generalized phrase structure grammar (GPSG) cite its weak context-free generative power as proof of the computational tractability of GPSG-Recognition. Since context-free languages (CFLs) can be parsed ...