Digital TV images are generally compressed to reduce transmission bandwidth requirements. In this paper a compression algorithm for the bit rate reduction if digital TV images, using the wavelet transform, is described. The TV images are decomposed by the wavelet transform into a lower resolution signal and high-frequency subbands. Some issues related to the transmission of the compressed TV images on a noisy channel are also analyzed. Channel noise can determine synchronization loss if variable length codes are employed and, hence, a distortion in the reconstructed images. A technique to recovery the synchronization losses is presented. The effects of different channel coding techniques on the reconstructed image quality is also investigated. Computer simulations have been used to characterize the performance of the proposed technique.

Transmission of wavelet transform coded TV image on a noisy channel / F. Argenti;G. Benelli;C. Kutufa. - STAMPA. - (1993), pp. 386-390. (Intervento presentato al convegno Proceedings of the IEEE International Conference on Communications '93 tenutosi a Geneva, CH nel 23-26 May 1993) [10.1109/ICC.1993.397292].

Transmission of wavelet transform coded TV image on a noisy channel

ARGENTI, FABRIZIO;BENELLI, GIULIANO;
1993

Abstract

Digital TV images are generally compressed to reduce transmission bandwidth requirements. In this paper a compression algorithm for the bit rate reduction if digital TV images, using the wavelet transform, is described. The TV images are decomposed by the wavelet transform into a lower resolution signal and high-frequency subbands. Some issues related to the transmission of the compressed TV images on a noisy channel are also analyzed. Channel noise can determine synchronization loss if variable length codes are employed and, hence, a distortion in the reconstructed images. A technique to recovery the synchronization losses is presented. The effects of different channel coding techniques on the reconstructed image quality is also investigated. Computer simulations have been used to characterize the performance of the proposed technique.
1993
Proceedings of the IEEE International Conference on Communications '93
Proceedings of the IEEE International Conference on Communications '93
Geneva, CH
23-26 May 1993
F. Argenti;G. Benelli;C. Kutufa
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/521903
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