TY - GEN
T1 - Two dimensional non-separable adaptive directional lifting structure of discrete wavelet transform
AU - Yoshida, Taichi
AU - Suzuki, Taizo
AU - Kyochi, Seisuke
AU - Ikehara, Masaaki
PY - 2011/8/18
Y1 - 2011/8/18
N2 - In this paper, we propose a two dimensional (2D) non-separable adaptive directional lifting (ADL) structure of discrete wavelet transform (DWT) and its image coding application. Conventionally, we have proposed a polyphase representation of a 2D non-separable lifting structure of DWT. We generalize the polyphase representation in this paper and one structure of the class has been proven to reduce errors due to the rounding operations and improve a compatibility of the irreversible 9/7 DWT, compared with a 2D separable lifting structure of DWT. Adding the adaptive directional transforming property to the generalized structure, our proposed method improves the lossy image coding performance with maintaining the compatibility.
AB - In this paper, we propose a two dimensional (2D) non-separable adaptive directional lifting (ADL) structure of discrete wavelet transform (DWT) and its image coding application. Conventionally, we have proposed a polyphase representation of a 2D non-separable lifting structure of DWT. We generalize the polyphase representation in this paper and one structure of the class has been proven to reduce errors due to the rounding operations and improve a compatibility of the irreversible 9/7 DWT, compared with a 2D separable lifting structure of DWT. Adding the adaptive directional transforming property to the generalized structure, our proposed method improves the lossy image coding performance with maintaining the compatibility.
KW - adaptive directional transform
KW - discrete wavelet transform
KW - lossy to lossless image coding
KW - two dimensional non-separable lifting structure
UR - http://www.scopus.com/inward/record.url?scp=80051643664&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80051643664&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2011.5946785
DO - 10.1109/ICASSP.2011.5946785
M3 - Conference contribution
AN - SCOPUS:80051643664
SN - 9781457705397
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 1529
EP - 1532
BT - 2011 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011 - Proceedings
T2 - 36th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2011
Y2 - 22 May 2011 through 27 May 2011
ER -