TY - GEN
T1 - Simplified realization of normalized integer WHT for multiplierless integer DCT
AU - Suzuki, Taizo
AU - Ikehara, Masaaki
PY - 2011/4/21
Y1 - 2011/4/21
N2 - Walsh-Hadamard transform (WHT) based multiplierless integer discrete cosine transform (IntDCT) has structural regularity even in short word length lifting coefficients. It, however, cannot apply to image coding without the quantization part because WHT was implemented by only 1 adder operations without the normalization scaling factors. Although we have already presented a normalized integer WHT (IntWHT) as its solution, it also has many adder operations. In this paper, using a two-dimensional (2-D) separable transform of one-dimensional (1-D) normalized WHT is applied to each lifting coefficient, we present a more simplified realization of normalized IntWHT with structural regularity for short word length lifting coefficients. Finally, in lossless-to-lossy image coding, IntDCT based on the proposed IntWHT is validated.
AB - Walsh-Hadamard transform (WHT) based multiplierless integer discrete cosine transform (IntDCT) has structural regularity even in short word length lifting coefficients. It, however, cannot apply to image coding without the quantization part because WHT was implemented by only 1 adder operations without the normalization scaling factors. Although we have already presented a normalized integer WHT (IntWHT) as its solution, it also has many adder operations. In this paper, using a two-dimensional (2-D) separable transform of one-dimensional (1-D) normalized WHT is applied to each lifting coefficient, we present a more simplified realization of normalized IntWHT with structural regularity for short word length lifting coefficients. Finally, in lossless-to-lossy image coding, IntDCT based on the proposed IntWHT is validated.
KW - Integer discrete cosine transform (IntDCT)
KW - integer Walsh-Hadamard transform (IntWHT)
KW - lossless-to-lossy image coding
UR - http://www.scopus.com/inward/record.url?scp=79954477512&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79954477512&partnerID=8YFLogxK
U2 - 10.1109/DSP-SPE.2011.5739260
DO - 10.1109/DSP-SPE.2011.5739260
M3 - Conference contribution
AN - SCOPUS:79954477512
SN - 9781612842271
T3 - 2011 Digital Signal Processing and Signal Processing Education Meeting, DSP/SPE 2011 - Proceedings
SP - 472
EP - 476
BT - 2011 Digital Signal Processing and Signal Processing Education Meeting, DSP/SPE 2011 - Proceedings
T2 - 2011 Digital Signal Processing and Signal Processing Education Meeting, DSP/SPE 2011
Y2 - 4 January 2011 through 7 January 2011
ER -