Accession Number : ADA138194

Title :   Grid-Based Line Drawing Quantization.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Thompson, E A

PDF Url : ADA138194

Report Date : Dec 1983

Pagination or Media Count : 93

Abstract : This paper documents a quantitative analysis of the performance of the generalized chain codes when used to quantize waveforms of specific degrees of curvature. The analysis was performed using a software simulation of the chain coding system on periodic circular and sinusoid waves. The performance of the codes was measured in terms of the number of encoded bits per length of the function and the area error per length. The analytic measure of the curvature of the circular and sine wave was developed so that the performance of the codes could be evaluated as a function of the curvature of the waveform being quantized. Comparisons on the circular wave provided a baseline of a constant curvature function. The performance of the coding system was the compared to the results when sine functions of similar curvature were encoded to determine if curvature is a valid predictor of the performance of the chain code system. (Author)

Descriptors :   *COMPUTER GRAPHICS, *IMAGE PROCESSING, PATTERN RECOGNITION, CODING, GRIDS(COORDINATES), LINES(GEOMETRY), QUANTITATIVE ANALYSIS, PERFORMANCE(ENGINEERING), SINE WAVES, CURVATURE, CHAINS, BASE LINES, THESES

Subject Categories : Cybernetics
      Printing and Graphic Arts

Distribution Statement : APPROVED FOR PUBLIC RELEASE