January 1972 - Vol. 15 No. 1
Features
Pictorial pattern recognition and the phase problem of x-ray crystallography
The availability of interactive, three-dimensional, computer graphics systems coupled to powerful digital computers encourages the development of algorithms adapted to…
On shrinking binary picture patterns
A parallel processing algorithm for shrinking binary patterns to obtain single isolated elements, one for each pattern, is presented. This procedure may be used for…
Use of the Hough transformation to detect lines and curves in pictures
Hough has proposed an interesting and computationally efficient procedure for detecting lines in pictures. This paper points out that the use of angle-radius rather than…
A text-editing and manipulation program is described. The program operates from low-cost cathode-ray tube entry and display stations with keyboard and 13 function…
Teacher/student authored CAI using the NEWBASIC system
The pedagogical advantages of a general purpose interactive system called NEWBASIC/CATALYST are discussed. NEWBASIC/CATALYST incorporates an advanced implementation of…
MUSE: a model to understand simple English
MUSE is a computer model for natural language processing, based on a semantic memory network like that of Quillian's TLC. MUSE, from a Model to Understand Simple English,…
Quadratic programming for nonlinear regression
A quadratic programming algorithm is described for use with the magnified diagonal method of nonlinear regression with linear constraints. The regression method is…
Algorithm 418: calculation of Fourier integrals [D1]
The most commonly used formula for calculating Fourier integrals is Filon's formula, which is based on the approximation of the function by a quadratic in each double…