Title :
Transmission of wavelet transform coded TV images on a noisy channel
Author :
Argenti, Fabrizio ; Benelli, Giuliano ; Kutufà, Claudio
Author_Institution :
Dipartimento di Ingegneria Elettronica, Firenze Univ., Italy
Abstract :
A compression algorithm for the bit rate reduction of 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 recover the synchronization losses is presented. The effects of different channel coding techniques on the reconstructed image quality are also investigated. Computer simulations have been used to characterize the performance of the proposed technique
Keywords :
channel coding; data compression; digital communication; digital simulation; digital television; image reconstruction; losses; synchronisation; television; variable length codes; video coding; wavelet transforms; bit rate reduction; channel coding techniques; compressed TV images; digital TV images; distortion; noisy channel; performance; reconstructed image quality; simulations; subbands; synchronization loss; wavelet transform; Bit rate; Channel coding; Compression algorithms; Computer simulation; Digital TV; Image analysis; Image coding; Image quality; Image reconstruction; Wavelet transforms;
Conference_Titel :
Communications, 1993. ICC '93 Geneva. Technical Program, Conference Record, IEEE International Conference on
Conference_Location :
Geneva
Print_ISBN :
0-7803-0950-2
DOI :
10.1109/ICC.1993.397292
