Title :
Source coding and transmission of HDTV images compressed with the wavelet transform
Author :
Argenti, Fabrizio ; Benelli, Giuliano ; Mecocci, Alessandro
Author_Institution :
Dept. of Electron. Eng., Firenze Univ., Italy
fDate :
1/1/1993 12:00:00 AM
Abstract :
Digital high-definition TV (HDTV) signals are generally compressed to reduce transmission bandwidth requirements. A compression algorithm for the bit rate reduction of an HDTV image using the wavelet transform is presented. The major problems related to the transmission of a compressed HDTV signal are analyzed. Transmission is examined both on a noisy channel and an asynchronous transfer mode (ATM) network. The effects of channel noise on the reconstructed image are determined, and a solution to mitigate the degradation of the image quality is presented. A model for the output bit rate of the HDTV coder is derived and used to simulate the transmission of an ATM multiplexer so that the network´s main performance parameters can be determined
Keywords :
B-ISDN; asynchronous transfer mode; data compression; high definition television; image coding; television broadcasting; video signals; ATM network; B-ISDN; HDTV coder; HDTV images; asynchronous transfer mode; channel noise; compressed HDTV signal; noisy channel; output bit rate; source coding; transmission; wavelet transform; Asynchronous transfer mode; Bandwidth; Bit rate; Compression algorithms; HDTV; Image coding; Image reconstruction; Signal analysis; Source coding; Wavelet transforms;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
