TY - JOUR
T1 - A Scheme for Spatial Scalability Using Nonscalable Encoders
AU - Dugad, Rakesh
AU - Ahuja, Narendra
N1 - Funding Information:
Manuscript received October 4, 2001; revised October 25, 2002. This work was supported by the Office of Naval Research under Grant N00014-96-1-0502. This paper was recommended by Associate Editor J.-R. Ohm.
PY - 2003/10
Y1 - 2003/10
N2 - We describe a scheme that achieves spatially scalable coding of video by employing nonscalable video encoders (e.g., MPEG-2 main profile), along with a downsampler and an upsampler. The scheme is illustrated for the case of coding video at two resolutions. The enhancement layer is coded in two steps by first exploiting the spatial redundancy and then exploiting the temporal redundancy. Hence, the scheme has a separable implementation. Results are presented for five different sequences, coded for three different combinations of base and enhancement layer bit rates. When MPEG-2 main profile is used for the nonscalable encoders, the results obtained are comparable to the performance of MPEG-2 spatial scalability profile.
AB - We describe a scheme that achieves spatially scalable coding of video by employing nonscalable video encoders (e.g., MPEG-2 main profile), along with a downsampler and an upsampler. The scheme is illustrated for the case of coding video at two resolutions. The enhancement layer is coded in two steps by first exploiting the spatial redundancy and then exploiting the temporal redundancy. Hence, the scheme has a separable implementation. Results are presented for five different sequences, coded for three different combinations of base and enhancement layer bit rates. When MPEG-2 main profile is used for the nonscalable encoders, the results obtained are comparable to the performance of MPEG-2 spatial scalability profile.
KW - Discrete cosine transform (DCT)
KW - HDTV
KW - MPEG-2
KW - Multiresolution coding
KW - Scalable video compression
KW - Spatial scalability
KW - Subband decomposition
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U2 - 10.1109/TCSVT.2003.816519
DO - 10.1109/TCSVT.2003.816519
M3 - Article
AN - SCOPUS:0141987482
SN - 1051-8215
VL - 13
SP - 993
EP - 999
JO - IEEE Transactions on Circuits and Systems for Video Technology
JF - IEEE Transactions on Circuits and Systems for Video Technology
IS - 10
ER -