Accession Number : ADD018039

Title :   System and Method for Data Compression

Descriptive Note : Patent Application, Filed 15 Apr 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Impagliazzo, John M ; Greene, Walter E ; Huynh, Quyen Q

PDF Url : ADD018039

Report Date : 15 Apr 1996

Pagination or Media Count : 27

Abstract : A data compression system includes an image preprocessor for 1 generating a digitized, formatted set of pixels which is passed to an image transformer. The image transformer generates a set of wavelet coefficients from the formatted set of pixels via a series of one-dimensional wavelet transforms. A compression processor selects a subset of the wavelet coefficients for retention based on areas of interest in the original image and the position of coefficients within the set of coefficients. The compression processor then builds a compressed image file using a coefficient location identifier to reduce the size of the addresses that indicate the position of the selected coefficients within the set.

Descriptors :   *IMAGE PROCESSING, *PATENT APPLICATIONS, *DATA COMPRESSION, *PIXELS, COMPRESSION, POSITION(LOCATION), INFORMATION SYSTEMS, ONE DIMENSIONAL, PROCESSING EQUIPMENT, IDENTIFICATION, COEFFICIENTS, RETENTION(GENERAL), IMAGES, PREPROCESSING, TRANSFORMERS

Subject Categories : Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE