Accession Number : AD0774082

Title :   3-TO-1 Data Compression Via Walsh Transform.

Descriptive Note : Research and development rept. FY 73 and FY 74,

Corporate Author : NAVAL ELECTRONICS LAB CENTER SAN DIEGO CALIF

Personal Author(s) : McCall,D. C.

Report Date : 10 DEC 1973

Pagination or Media Count : 35

Abstract : Naval Electronics Laboratory Center (NELC) has emulated a Walsh transform source encoder. This data compression technique has given three-to-one compression while maintaining good image fidelity. A digital frame capture unit (DFCU) is used to digitize images into a format suitable for processing on a digital computer. The encoder is emulated with a digital computer program that processes the digitized images. These processed images can then be displayed on the TV monitor of the DFCU for evaluation. Greater compression is feasible. (Author)

Descriptors :   *Data compression, *Walsh functions, *Coding, Data processing, Images, Pattern recognition, Computer programs, Digital systems

Subject Categories : Computer Programming and Software
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE