Title :
Ensuring quality of service for image transmission: hybrid loss protection
Author :
Grangetto, Marco ; Magli, Enrico ; Olmo, Gabriella
Author_Institution :
Dipt. di Elettronica, Politecnico di Torino, Italy
fDate :
6/1/2004 12:00:00 AM
Abstract :
We present hybrid loss protection as a new channel coding and packetization scheme for image transmission over nonprioritized lossy packet networks. The scheme employs an interleaver-based structure, and attempts to maximize the expected peak signal-to-noise ratio (PSNR) at the receiver given the constraint that the probability of failure, i.e., the probability that the PSNR of the decoded image is below a given threshold, is upper-bounded by a user-defined value. A new code-allocation algorithm is proposed, which employs Gilbert-Elliot modeling of the network statistics. Experimental results are provided in the case of transmission of images encoded by SPIHT and JPEG 2000 over a wireline, as well as a wireless UMTS-based Internet connection.
Keywords :
3G mobile communication; Internet; combined source-channel coding; image coding; packet radio networks; probability; quality of service; visual communication; Gilbert-Elliot modelling; Internet; JPEG 2000; SPIHT; UMTS; code-allocation algorithm; hybrid loss protection; image transmission; joint source-channel coding; lossy packet networks; multiple description coding; packetization scheme; peak signal-to-noise ratio; quality of service; radio receiver; Channel coding; Decoding; Image communication; Internet; PSNR; Probability; Propagation losses; Protection; Quality of service; Statistics; Algorithms; Computer Communication Networks; Image Enhancement; Image Interpretation, Computer-Assisted; Information Storage and Retrieval; Quality Assurance, Health Care; Quality Control; Reproducibility of Results; Sensitivity and Specificity;
Journal_Title :
Image Processing, IEEE Transactions on
DOI :
10.1109/TIP.2004.827233
