TY - JOUR
T1 - JPEG2000 ROI Coding With Fine-Grain Accuracy Through Rate-Distortion Optimization Techniques
AU - Bartrina-Rapesta, Joan
AU - Serra-Sagristà, Joan
AU - Aulí-Llinàs, Francesc
PY - 2009/1/1
Y1 - 2009/1/1
N2 - Region of interest (ROI) coding is a feature of prominent image coding systems that enables the specification of different coding priorities to certain regions of the image. JPEG2000 provides ROI coding through two mechanisms: either modifying wavelet coefficients or using rate-distortion optimization techniques. Although ROI coding methods based on the modification of wavelet coefficients provide an excellent accuracy to delimit the ROI area (referred to as fine-grain accuracy), they significantly penalize the coding efficiency. On the other hand, methods based on rate-distortion optimization improve the coding efficiency but, so far, have not been able to achieve the intended fine-grain accuracy. This letter introduces two ROI coding methods that, using rate-distortion optimization techniques, achieve a fine-grain accuracy, comparable to the one obtained when wavelet coefficients are modified, and are competitive in terms of coding efficiency. © 2009, IEEE. All rights reserved.
AB - Region of interest (ROI) coding is a feature of prominent image coding systems that enables the specification of different coding priorities to certain regions of the image. JPEG2000 provides ROI coding through two mechanisms: either modifying wavelet coefficients or using rate-distortion optimization techniques. Although ROI coding methods based on the modification of wavelet coefficients provide an excellent accuracy to delimit the ROI area (referred to as fine-grain accuracy), they significantly penalize the coding efficiency. On the other hand, methods based on rate-distortion optimization improve the coding efficiency but, so far, have not been able to achieve the intended fine-grain accuracy. This letter introduces two ROI coding methods that, using rate-distortion optimization techniques, achieve a fine-grain accuracy, comparable to the one obtained when wavelet coefficients are modified, and are competitive in terms of coding efficiency. © 2009, IEEE. All rights reserved.
KW - JPEG2000
KW - rate-distortion optimization
KW - region of interest coding
U2 - https://doi.org/10.1109/LSP.2008.2008570
DO - https://doi.org/10.1109/LSP.2008.2008570
M3 - Article
VL - 16
SP - 45
EP - 48
JO - IEEE Signal Processing Letters
JF - IEEE Signal Processing Letters
SN - 1070-9908
ER -