TY - GEN
T1 - Denoising performance of modified dual tree complex wavelet transform
AU - Serbes, Gorkem
AU - Aydin, Nizamettin
PY - 2010
Y1 - 2010
N2 - Dual-tree complex wavelet transform (DTCWT) is a shift invariant transform with limited redundancy. Complex quadrature signals are dual channel signals obtained from the systems employing quadrature demodulation. An example of such signals is quadrature Doppler signal obtained from blood flow analysis systems. Prior to processing Doppler signals using the DTCWT, directional flow signals must be obtained and then two separate DTCWT applied, increasing the computational complexity. In order to decrease computational complexity, a modified DTCWT (MDTCWT) algorithm can be used (1). In this study denoising performance of MDTCWT is compared with DTCWT and conventional Discrete wavelet transform (DWT) by using simulation signals. Results demonstrate that the MDTCWT based denoising outperforms conventional discrete wavelet based denoising.
AB - Dual-tree complex wavelet transform (DTCWT) is a shift invariant transform with limited redundancy. Complex quadrature signals are dual channel signals obtained from the systems employing quadrature demodulation. An example of such signals is quadrature Doppler signal obtained from blood flow analysis systems. Prior to processing Doppler signals using the DTCWT, directional flow signals must be obtained and then two separate DTCWT applied, increasing the computational complexity. In order to decrease computational complexity, a modified DTCWT (MDTCWT) algorithm can be used (1). In this study denoising performance of MDTCWT is compared with DTCWT and conventional Discrete wavelet transform (DWT) by using simulation signals. Results demonstrate that the MDTCWT based denoising outperforms conventional discrete wavelet based denoising.
UR - http://www.scopus.com/inward/record.url?scp=79951596280&partnerID=8YFLogxK
U2 - 10.1109/ITAB.2010.5687652
DO - 10.1109/ITAB.2010.5687652
M3 - Conference contribution
AN - SCOPUS:79951596280
SN - 9781424465606
T3 - Proceedings of the IEEE/EMBS Region 8 International Conference on Information Technology Applications in Biomedicine, ITAB
BT - ITAB 2010 - 10th International Conference on Information Technology and Applications in Biomedicine
T2 - 10th International Conference on Information Technology and Applications in Biomedicine: Emerging Technologies for Patient Specific Healthcare, ITAB 2010
Y2 - 2 November 2010 through 5 November 2010
ER -