Search
Now showing items 421-430 of 625
Energy Functions for Early Vision and Analog Networks
(1987-11-01)
This paper describes attempts to model the modules of early vision in terms of minimizing energy functions, in particular energy functions allowing discontinuities in the solution. It examines the success of using ...
Rigidity and Smoothness of Motion
(1987-11-01)
sMany theories of structure from motion divide the process into twosparts which are solved using different assumptions. Smoothness of thesvelocity field is often assumed to solve the motion correspondencesproblem, and then ...
Lisp: A Language for Stratified Design
(1987-08-01)
We exhibit programs that illustrate the power of Lisp as a language for expressing the design and organization of computational systems. The examples are chosen to highlight the importance of abstraction in program ...
Manipulator Design Vignettes
(1981-10-01)
This memo is about mechanical arms. The literature on robotics seems to be deficient in such discussions, perhaps because not enough sharp theoretical problems have been formulated to attract interest. I"m sure many of ...
Constraints: A Language for Expressing Almost-Hierarchical Descriptions
(1981-08-01)
We present an interactive system organized around networks of constraints rather than the programs which manipulate them. We describe a language of hierarchical constraint networks. We describe one method of deriving ...
A Recursive Lagrangian Formulation of Manipulator Dynamics
(1980-06-01)
An efficient Lagrangian formulation of manipulator dynamics has been developed. The efficiency derives from recurrence relations for the velocities, accelerations, and generalized forces. The number of additions and ...
Negotiation as a Metaphor for Distributed Problem Solving
(1981-05-01)
We describe the concept of distributed problem solving and define it as the cooperative solution of problems by a decentralized and loosely coupled collection of problem solvers. This approach to problem solving offers ...
Color Vision and Image Intensities: When Are Changes Material?
(1981-05-01)
Marr has emphasized the difficulty in understanding a biological system or its components without some idea of its goals. In this paper, a preliminary goal for color vision is proposed and analyzed. That goal is to ...
On the Representation of Angular Velocity and Its Effect on the Efficiency of Manipulator Dynamics Computation
(1981-03-01)
Recently there has been considerable interest in efficient formulations of manipulator dynamics, mostly due to the desirability of real-time control or analysis of physical devices using modest computers. The inefficiency ...
Learning New Principles from Precedents and Exercises: The Details
(1981-11-01)
Much Learning is done by way of studying precedents and exercises. A teacher supplies a story, gives a problem, and expects a student both to solve a problem and to discover a principle. The student must find the ...