Accession Number : ADA299868

Title :   Stochastic Determination of Optimal Wavelet Compression Strategies.

Descriptive Note : Professional paper,

Corporate Author : NAVAL COMMAND CONTROL AND OCEAN SURVEILLANCE CENTER RDT AND E DIV SAN DIEGO CA

Personal Author(s) : Waagen, D. E. ; Argast, J. D. ; McDonnell, J. R.

PDF Url : ADA299868

Report Date : AUG 1995

Pagination or Media Count : 13

Abstract : Wavelet theory provides an attractive approach to signal and image compression. This work investigates a new approach for wavelet transform coefficient selection for efficient image compression. For a desired image compression ratio (50:1), wavelet scale thresholds are derived via a multiagent stochastic optimization process. Previous work has demonstrated an interscale relationship between the stochastically optimized wavelet coefficient thresholds. Based on the experimental results, a deterministic wavelet coefficient selection criterion is hypothesized and the constants of the equation statistically derived. Experimental results of the stochastic optimization and deterministic approaches are compared and contrasted with results from previously published wavelet coefficient threshold strategies.

Descriptors :   *RADAR IMAGES, *FOURIER ANALYSIS, OPTIMIZATION, STOCHASTIC PROCESSES, EFFICIENCY, CONSTANTS, DATA COMPRESSION, RADAR SIGNALS, EQUATIONS, DETERMINANTS(MATHEMATICS), COMPRESSION RATIO.

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE