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Now showing items 31-40 of 62
Region-Based Feature Interpretation for Recognizing 3D Models in 2D Images
(1991-06-01)
In model-based vision, there are a huge number of possible ways to match model features to image features. In addition to model shape constraints, there are important match-independent constraints that can efficiently ...
Why are There so Few Female Computer Scientists?
(1991-08-01)
This report examines why women pursue careers in computer science and related fields far less frequently than men do. In 1990, only 13% of PhDs in computer science went to women, and only 7.8% of computer science ...
Concurrent Smalltalk on the Message-Driven Processor
(1991-09-01)
Concurrent Smalltalk is the primary language used for programming the J- Machine, a MIMD message-passing computer containing thousands of 36-bit processors connected by a very low latency network. This thesis describes ...
Curved Inertia Frames: Visual Attention and Perceptual Organization Using Convexity and Symmetry
(1991-10-01)
In this paper we present an approach to perceptual organization and attention based on Curved Inertia Frames (C.I.F.), a novel definition of "curved axis of inertia'' tolerant to noisy and spurious data. The definition ...
Perceptual Organization, Figure-Ground, Attention and Saliency
(1991-08-01)
Notions of figure-ground, inside-outside are difficult to define in a computational sense, yet seem intuitively meaningful. We propose that "figure" is an attention-directed region of visual information processing, and ...
Affine Matching with Bounded Sensor Error: A Study of Geometric Hashing and Alignment
(1991-08-01)
Affine transformations are often used in recognition systems, to approximate the effects of perspective projection. The underlying mathematics is for exact feature data, with no positional uncertainty. In practice, ...
Models of Noise and Robust Estimates
(1991-11-01)
Given n noisy observations g; of the same quantity f, it is common use to give an estimate of f by minimizing the function Eni=1(gi-f)2. From a statistical point of view this corresponds to computing the Maximum likelihood ...
Green Theorems and Qualitative Properties of the Optical Flow
(1991-04-01)
How can one compute qualitative properties of the optical flow, such as expansion or rotation, in a way which is robust and invariant to the position of the focus of expansion or the center of rotation? We suggest a ...
Line Kinematics for Whole-Arm Manipulation
(1991-01-01)
A Whole-Arm Manipulator uses every surface to both sense and interact with the environment. To facilitate the analysis and control of a Whole-Arm Manipulator, line geometry is used to describe the location and trajectory ...
Principles, Opportunism and Seeing in Design: A Computational Approach
(1991-06-01)
This thesis introduces elements of a theory of design activity and a computational framework for developing design systems. The theory stresses the opportunistic nature of designing and the complementary roles of focus ...