TY - GEN
T1 - Multiple description wavelet image coding for reliable delivery and QoS maintenance
AU - Sriraja, Y.
AU - Krishnamurthy, Sandip
AU - Karp, Tanja
PY - 2005
Y1 - 2005
N2 - We consider the problem of efficient transmission of compressed images over multiple servers for fast and reliable access over the internet and wireless channels. Rather than having identical copies of the data at each server, we present a scheme wherein, each server holds different versions of the compressed images that can either be individually decoded to yield equivalent images, or jointly decoded to obtain a better image quality. We exploit the shift variance of the discrete wavelet transform to generate multiple descriptions of the image, and compress them with a robust image coding algorithm. A given image can be encoded into multiple independent descriptions for storage over multiple servers. The path diversity presented by the networks and the presence of equivalent descriptions on the different servers provide a mechanism for reliable delivery. The approach also ensures a robust delivery of image data in the event of network failures.
AB - We consider the problem of efficient transmission of compressed images over multiple servers for fast and reliable access over the internet and wireless channels. Rather than having identical copies of the data at each server, we present a scheme wherein, each server holds different versions of the compressed images that can either be individually decoded to yield equivalent images, or jointly decoded to obtain a better image quality. We exploit the shift variance of the discrete wavelet transform to generate multiple descriptions of the image, and compress them with a robust image coding algorithm. A given image can be encoded into multiple independent descriptions for storage over multiple servers. The path diversity presented by the networks and the presence of equivalent descriptions on the different servers provide a mechanism for reliable delivery. The approach also ensures a robust delivery of image data in the event of network failures.
UR - http://www.scopus.com/inward/record.url?scp=33745168656&partnerID=8YFLogxK
U2 - 10.1109/MSAN.2005.1489942
DO - 10.1109/MSAN.2005.1489942
M3 - Conference contribution
AN - SCOPUS:33745168656
SN - 0780393198
SN - 9780780393196
T3 - 2005 1st International Conference on Multimedia Services Access Networks, MSAN05
SP - 54
EP - 58
BT - 2005 1st InternationalConference on Multimedia Services Access Networks, MSAN05
Y2 - 13 June 2005 through 15 June 2005
ER -