Error correction codes with even minimum distance for DCT image transmission

Author

Emami, Shahriar ; Miller, Scott L.

Author_Institution

Dept. of Electr. Eng., Florida Univ., Gainesville, FL, USA

Volume

1

fYear

1995

fDate

35009

Firstpage

269

Abstract

Codes with even minimum distance (extended Hamming codes and parity check codes) are utilized for error protection of DCT coded pictures. These codes are decoded in a manner to take advantage of the natural redundancy in a picture. It is shown that these codes can provide error concealment, with lower overhead than what is reported in the past. A method for joint source/channel coding of DCT coded images is also introduced. The SNR graphs and the subjective examination of the images demonstrate the effectiveness of the technique. Improvements of up to 8 dB were observed compared to the uncoded system

Keywords

Hamming codes; channel coding; decoding; discrete cosine transforms; error correction codes; image coding; source coding; transform coding; visual communication; DCT coded images; DCT coded pictures; DCT image transmission; SNR graph; decoding; error concealment; error correction codes; error protection; even minimum distance codes; extended Hamming codes; joint source/channel coding; overhead; parity check codes; redundancy; subjective examination; Discrete cosine transforms; Discrete transforms; Error correction codes; Frequency; Image coding; Image communication; Karhunen-Loeve transforms; Parity check codes; Protection; Transform coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference, 1995. MILCOM '95, Conference Record, IEEE

Conference_Location

San Diego, CA

Print_ISBN

0-7803-2489-7

Type

conf

DOI

10.1109/MILCOM.1995.483311

Filename

483311