Block delta modulation for compression of surveillance video signals

Author

Kim, Shih-Chieh ; Fan, Chih-Peng ; Jar-Ferr Yang ; Liu, Bin-Da ; Yang, David W K

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

Volume

40

Issue

3

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

458

Lastpage

465

Abstract

This paper describes a new methodology for coding the surveillance video signals by means of delta modulation and statistical estimations. This codec is simpler than the CCITT MPEG or H.261 Recommendation and is more suitable for the usage in close-circuit TV (CCTV) systems. With the statistical characteristics resulting from the sequence of images in surveillance systems, the proposed compression scheme is based on 8×8 pixel blocks of temporal differences. According to a modal selection of blocks, each block is further coded in different modes: the BDM (block delta modulation), ABDM (adaptive block delta modulation), DCT and ZERO modes. From the simulation results, a compression ratio of 1:47 and a PSNR of 37 dB are obtained when the above hybrid coder is used to encode the lady and walking men sequences

Keywords

closed circuit television; codecs; delta modulation; image coding; image sequences; video equipment; video signals; CCTV; DCT; PSNR; adaptive block delta modulation; block delta modulation; close-circuit TV systems; codec; coding; compression ratio; image sequence; simulation results; statistical characteristics; statistical estimations; surveillance video signals; temporal differences; video signal compression; Codecs; Delta modulation; Discrete cosine transforms; Image coding; PSNR; Pixel; Surveillance; TV; Transform coding; Video compression;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.320828

Filename

320828