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Dr. Sorina Dumitrescu

Associate Professor

Department of Electrical & Computer Engineering

Expertise:
Multimedia Computing and Communications; Network aware data compression; Signal quantization; Image coding and transmission
Areas of Specialization:
Research Clusters:
Email:
Office:
ITB-A222
Phone:
+1 905.525.9140 x 26486
Lab:
ITB-A103
Phone:
+1 905.525.9140 x 26112

Overview

My research interests lie in the broad area of multimedia coding and communications. My primary focus is on the analysis and design of constructive approaches for reliable data transmission over modern communications networks. More specific topics of my research are network aware data compression, signal quantization, image coding and transmission, steganalysis. My earlier research interests were in formal languages and automata theory.

Education

B.Sc. (University of Bucharest, Romania) ; Ph.D. (University of Bucharest, Romania)

Biography

Sorina Dumitrescu received the B.Sc. and Ph.D. degrees in mathematics from the University of Bucharest, Romania, in 1990 and 1997, respectively. From 2000 to 2002 she was a Postdoctoral Fellow in the Department of Computer Science at the University of Western Ontario, London, Canada.  Since 2002 she has been with the Department of Electrical and Computer Engineering at McMaster University, Hamilton, Canada, where she held Postdoctoral, Research Associate, and Assistant Professor positions, and where she is currently an Associate Professor. Her current research interests include multimedia coding and communications, network-aware data compression, signal quantization, steganalysis. Her earlier research interests were in formal languages and automata theory. Dr. Dumitrescu was a recipient of the NSERC University Faculty Award during 2007-2012.

Publications

Selected

Dumitrescu, S., Wu, X., and Wang, Z. (2003)

Detection of LSB Steganography via Sample Pair Analysis

IEEE Transactions on Signal Processing, vol. 51, Issue 7, pp. 1995 – 2007

Shao, M., Dumitrescu, S., and Wu, X. (2011)

Layered Multicast with Inter-layer Network Coding for Multimedia Streaming

IEEE Transactions on Multimedia, vol. 13, no. 2, pp. 353 – 365

Dumitrescu, S. and Wu, X. (2009)

On Properties of Locally Optimal Multiple Description Scalar Quantizers with Convex Cells

IEEE Transactions on Information Theory, vol. 55, no. 12, pp. 5591 – 5606

Dumitrescu, S. (2016)

On the Design of Optimal Noisy Channel Scalar Quantizer with Random Index Assignment

IEEE Transactions on Information Theory, vol. 55, no. 12, pp. 5591 – 5606

Recent

1) H. Wu and S. Dumitrescu, „Design of Optimal Entropy-constrained Unrestricted Polar Quantizer for Bivariate Circularly Symmetric Sources”, to appear in IEEE Transactions on Communications, DOI: 10.1109/TCOMM.2017.2789221.

2) Wu, H. , Zheng, T., and Dumitrescu, S., „On the Design of Symmetric Entropy-constrained Multiple Description Scalar Quantizer with Linear Joint Decoders”, IEEE Transactions on Communications, vol. 65, no. 8, pp. 3453—3466, Aug. 2017, DOI: 10.1109/TCOMM.2017.2704585.

3) Lin, K., and Dumitrescu, S., „Cross-layer Resource Allocation for Scalable Video over OFDMA Wireless Networks: Trade-off between Quality Fairness and Efficiency”, IEEE Transactions on Multimedia, vol. 19, no. 7, pp. 1654—1669, July 2017, DOI: 10.1109/TMM.2017.2678198..

 4) Dumitrescu, S.  and Wan, Y., “Bit-error Resilient Index Assignment for Multiple Description Scalar Quantizers”, IEEE Transactions on Information Theory, vol. 61, no. 5, pp. 2748—2763, May 2015.

5) Gao, Z. and Dumitrescu, S., “Flexible Symmetric Multiple Description Lattice Vector Quantizer with L ≥ 3 Descriptions”, IEEE Transactions Communications, vol. 62, no. 12, pp. 4281 – 4292, Dec. 2014.

6) Dumitrescu and T. Zheng, “Asymptotical Analysis of Several Multiple Description Scenarios with L ≥ 3 Descriptions”, IEEE Transactions on Communications, vol. 62, no. 4, pp. 1358 – 1372, Apr. 2014.

 

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Achievements

NSERC University Faculty Award (2007 - 2012)

LL (PEO).

Undergraduate Advisor for the Computer Engineering program (ECE Department, McMaster University)