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- Soontorn Oraintara, Ying-Jui Chen, Truong Q. Nguyen
- IEEE Trans. Signal Processing
- 2002

In this paper, a concept of integer fast Fourier transform ( IntFFT ) for approximating the discrete Fourier transform is introduced. Unlike the fixed-point fast Fourier transform (FxpFFT ), the newâ€¦ (More)

- Truong T. Nguyen, Soontorn Oraintara
- IEEE Transactions on Signal Processing
- 2008

This paper presents an over-complete multiscale decomposition by combining the Laplacian pyramid and the complex directional filter bank (DFB). The filter bank is constructed in such a way that eachâ€¦ (More)

- Ying-Jui Chen, Soontorn Oraintara, T. D. Tran, Kevin Amaratunga, T Q Nguyen
- IEEE Signal Processing Letters
- 2002

This letter describes an algorithm for systematically finding a multiplierless approximation of transforms by replacing floating-point multipliers with VLSI-friendly binary coefficients of the formâ€¦ (More)

- An P. N. Vo, Soontorn Oraintara
- Sig. Proc.: Image Comm.
- 2010

- Soontorn Oraintara, Trac D. Tran, Peter N. Heller, Truong Q. Nguyen
- IEEE Trans. Signal Processing
- 2001

Paraunitary linear-phase (PULP) -channel uniform filterbanks, which are also known as the generalized lapped orthogonal transforms (GenLOTs), can be designed and implemented using lattice structures.â€¦ (More)

- T. T. Nguyen, Soontorn Oraintara
- IEEE Transactions on Signal Processing
- 2005

This paper presents new developments of directional filterbanks (DFBs). The motivation for the paper is the existence of multiresolution and multidirection orthogonal transform for two-dimensionalâ€¦ (More)

- Ying-Jui Chen, Soontorn Oraintara, Truong Q. Nguyen
- ICIP
- 2000

This paper describes the implementation of integer discrete cosine transform (IntDCT) using the Walsh-Hadamard transform and the lifting scheme. The implementation is in the forms of shifts and adds,â€¦ (More)

- An P. N. Vo, Soontorn Oraintara, Truong T. Nguyen
- 2007 IEEE International Conference on Imageâ€¦
- 2007

This paper discusses how to utilize both magnitude and phase information obtained from the complex directional filter bank (CDFB) for the purpose of texture image retrieval. The relative phase, whichâ€¦ (More)

This paper presents a systematic and computable method for choosing the regularization parameter appearing in Tikhonov-type regularization based on non-quadratic regularizers. First, we extend theâ€¦ (More)

- Soontorn Oraintara, Trac D. Tran, Truong Q. Nguyen
- IEEE Trans. Signal Processing
- 2003

This paper discusses a method of regularity imposition onto biorthogonal linear-phase -band filterbanks using the lattice structure. A lifting structure is proposed for lattice matrixâ€¦ (More)