Title :
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
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;
Conference_Titel :
Military Communications Conference, 1995. MILCOM '95, Conference Record, IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-2489-7
DOI :
10.1109/MILCOM.1995.483311
