TY - JOUR
T1 - JPEG2000 low complexity allocation method of quality layers
AU - Aulí-Llinàs, Francesc
AU - Serra-Sagristà, Joan
AU - Rúbies-Feijoo, Carles
AU - Donoso-Bach, Lluís
PY - 2007
Y1 - 2007
N2 - An important issue of JPEG2000 implementations is the allocation of quality layers, since it determines the optimality of the code-stream in terms of rate-distortion. Common strategies of quality layers allocation use both rate-distortion optimization and rate allocation methods, requiring the user to specify the number of quality layers and a distribution function for their rate allocation. This paper presents a new allocation method of quality layers that, neither needing rate-distortion optimization nor requiring user specifications, constructs a near-optimal code-stream in terms of rate-distortion. Besides, the computational cost of the proposed method is in practice negligible, and its application helps to reduce the computational load of the JPEG2000 encoder.
AB - An important issue of JPEG2000 implementations is the allocation of quality layers, since it determines the optimality of the code-stream in terms of rate-distortion. Common strategies of quality layers allocation use both rate-distortion optimization and rate allocation methods, requiring the user to specify the number of quality layers and a distribution function for their rate allocation. This paper presents a new allocation method of quality layers that, neither needing rate-distortion optimization nor requiring user specifications, constructs a near-optimal code-stream in terms of rate-distortion. Besides, the computational cost of the proposed method is in practice negligible, and its application helps to reduce the computational load of the JPEG2000 encoder.
KW - JPEG2000 standard
KW - Rate allocation
KW - Rate-distortion optimization
UR - http://www.scopus.com/inward/record.url?scp=38049127163&partnerID=8YFLogxK
U2 - 10.1007/978-3-540-74819-9_59
DO - 10.1007/978-3-540-74819-9_59
M3 - Article
AN - SCOPUS:38049127163
SN - 0302-9743
SP - 478
EP - 484
JO - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
JF - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
IS - PART 1
ER -