Publications

I am working on image reconstruction algorithms for general Fourier imaging, especially applicable to computerized tomography and synthetic aperture radar. Recently, I started looking into wavelet theory and its application in signal processing.

Journal Articles

H. Choi and D. C. Munson, Jr., Analysis and design of minimax-optimal interpolators, IEEE Transactions on Signal Processing, vol. 46, no. 6, pp. 1571-1579, June 1998.
H. Choi and D. C. Munson, Jr., Direct-Fourier reconstruction in tomography and synthetic aperture radar, International Journal of Imaging Systems and Technology, vol. 9, pp. 1-13, January 1998.

Journal Articles under Review

H. Choi, J. A. Lee and D. C. Munson, Jr., On the wavenumber model in synthetic aperture radar, submitted to the IEEE Transactions on Image Processing.
H. Choi, A. W. Krone and D. C. Munson, Jr., ISAR imaging of approaching targets, submitted to the IEEE Transactions on Image Processing.
H. Choi and D. C. Munson, Jr., SVD-based regularization for minimax interpolation of bandlimited signals, submitted to the IEEE Signal Processing Letters.

Journal Articles in Preparation

H. Choi, A. Sayeed, and R. G. Baraniuk, Wavelet domain Wiener filtering, in preparation.
H. Choi and R. G. Baraniuk, Multiscale texture segmentation using wavelet-dom ain hidden Markov models, in preparation.

Coference Presentations

H. Choi and R. G. Baraniuk, Multiple wavelet-domain image denoising by Besov projections, submitted to ICIP'99, Oct. 1999.
H. Choi and R. G. Baraniuk, Wavelet-domain statistical models and Besov spaces, submitted to SPIE Int. Soc. Opt. Eng, July 1999.
J. Romberg, H. Choi and R. G. Baraniuk, Bayesian tree-structured image modeling, submitted to SPIE Int. Soc. Opt. Eng, July 1999.
H. Choi and R. G. Baraniuk, Image segmentation using wavelet-domain classification, submitted to SPIE Int. Soc. Opt. Eng, July 1999.
R. Neelamani, H. Choi, and R. G. Baraniuk, Deconvolution of ill-posed systems using wavelet-domain processing, to appear in Proceedings SPIE Int. Soc. Opt. Eng, July 1999 (invited talk).
M. S. Crouse, H. Choi, and R. G. Baraniuk, Multiscale statistical image processing using tree-structured probability models, to appear in Proceedings of IEEE Info. Theory Workshop on Dec., Est., Class., and Imaging (DECI), (Santa Fe, NM), Feb. 1999 (invited talk).
H. Choi and R. G. Baraniuk, Interpolation and denoising of nonuniformly sampled data using wavelet-domain processing, to appear in Proceedings of IEEE international conference on Acoustics, Speech and Signal Processing, Phoenix, AZ, March 1999.
R. Neelamani, H. Choi, and R. G. Baraniuk, Wavelet-based deconvolution for ill-conditioned systems, to appear in Proceedings of IEEE international conference on Acoustics, Speech and Signal Processing, Phoenix, AZ, March 1999.
H. Choi and R. G. Baraniuk, Analysis for wavelet domain Wiener filters, in Proceedings of the IEEE-SP International Symposium on Time-frequency and Time-scale Analysis, Oct. 6-9, 1998 in Pittsburgh.
H. Choi and R. G. Baraniuk, Multiscale texture segmentation using wavelet-domain hidden Markov models, presented at Thirty Second Annual Asilomar Conference on Signals, Systems, and Computers, November 1-4, 1998 in Pacific Grove, California.
H. Choi and D. C. Munson, Jr., Design and analysis of minimax optimal interpolators, in Proceedings of the 1995 IEEE International Conference on Acoustics, Speech and Signal Processing, Detroit, MI, May 1995.
H. Choi and D. C. Munson, Jr., On the optimality and exactness of wavenumber-domain SAR data processing, in Proceedings of the 1994 IEEE International Conference on Image Processing, Austin, TX, Nov. 1994.
H. Choi and D. C. Munson, Jr., Target shifts due to modeling assumptions in inverse synthetic aperture radar, in Proceedingss of the 1994 International Conference on Acoustics, Speech and Signal Processing, Australia, April 1994.
H. Choi and D. C. Munson, Jr., SAR imaging of approaching targets using a displaced-phase-center arraay, in Proceedings of the Eighth Workshop on Multidimensional Signal Processing, 1993, France.

Others

H. Choi, Signal processing issues in synthetic aperture radar and computer tomography,, Ph.D Thesis, University of Illinois at Urbana-Champaign, Jan. 1998.