TY - GEN
T1 - Random access region of interest in backward coding of wavelet trees
AU - Corona, Enrique
AU - Guo, Jiangling
AU - Mitra, Sunanda
AU - Nutter, Brian
AU - Karp, Tanja
PY - 2007
Y1 - 2007
N2 - Random access to high quality regions of interest (ROI) from compressed bit streams of large images is becoming a necessary feature in many applications, particularly in viewing important areas within larger images. We have developed a completely new multi-rate image subband coding scheme using backward coding of wavelet trees (BCWT), which is fast, memory-efficient and resolution-scalable, while offering much less complexity than many other codecs, including block-based ones, e.g. JPEG2000. Although the focus of this paper is the inclusion of random access ROI decoding capabilities in BCWT, the method can also be modified in order to accommodate conventional ROI schemes in which the selected region is decoded with higher fidelity than the rest of the image. Experimental results compare the original BCWT bitstream size against that of the resulting ROI.
AB - Random access to high quality regions of interest (ROI) from compressed bit streams of large images is becoming a necessary feature in many applications, particularly in viewing important areas within larger images. We have developed a completely new multi-rate image subband coding scheme using backward coding of wavelet trees (BCWT), which is fast, memory-efficient and resolution-scalable, while offering much less complexity than many other codecs, including block-based ones, e.g. JPEG2000. Although the focus of this paper is the inclusion of random access ROI decoding capabilities in BCWT, the method can also be modified in order to accommodate conventional ROI schemes in which the selected region is decoded with higher fidelity than the rest of the image. Experimental results compare the original BCWT bitstream size against that of the resulting ROI.
UR - http://www.scopus.com/inward/record.url?scp=43449124017&partnerID=8YFLogxK
U2 - 10.1109/ITW.2007.4313152
DO - 10.1109/ITW.2007.4313152
M3 - Conference contribution
AN - SCOPUS:43449124017
SN - 1424415640
SN - 9781424415649
T3 - 2007 IEEE Information Theory Workshop, ITW 2007, Proceedings
SP - 656
EP - 661
BT - 2007 IEEE Information Theory Workshop, ITW 2007, Proceedings
T2 - 2007 IEEE Information Theory Workshop, ITW 2007
Y2 - 2 September 2007 through 6 September 2007
ER -