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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 ...
Inferring 3D Shapes from 2D Codons
(1985-04-01)
All plane curves can be described at an abstract level by a sequence of five primitive elemental shapes, called "condons", which capture the sequential relations between the singular points of curvature. The condon ...
Boundaries of Visual Motion
(1985-04-01)
A representation of visual motion convenient for recognition shouldsmake prominent the qualitative differences among simple motions. Wesargue that the first stage in such a motion representation is to makesexplicit ...
Recognition and Localization of Overlapping Parts from Sparse Data
(1985-06-01)
This paper discusses how sparse local measurements of positions and surface normals may be used to identify and locate overlapping objects. The objects are modeled as polyhedra (or polygons) having up to six degreed ...
A Regularized Solution to Edge Detection
(1985-04-01)
We consider edge detection as the problem of measuring and localizing changes of light intensity in the image. As discussed by Torre and Poggio (1984), edge detection, when defined in this way, is an ill-posed problem ...
Parsing and Linguistic Explanation
(1985-04-01)
This article summarizes and extends recent results linking deterministic parsing to observed "locality principles" in syntax. It also argues that grammatical theories based on explicit phrase structure rules are unlikely ...
Analog "Neuronal" Networks in Early Vision
(1985-06-01)
Many problems in early vision can be formulated in terms of minimizing an energy or cost function. Examples are shape-from-shading, edge detection, motion analysis, structure from motion and surface interpolation ...
The Variational Approach to Shape from Shading
(1985-03-01)
We develop a systematic approach to the discovery of parallel iterative schemes for solving the shape-from-shading problem on a grid. A standard procedure for finding such schemes is outlines, and subsequently used ...