Publications

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Ph.D. Thesis

A. Ortega, "Optimization techniques for adaptive quantization of image and video under delay constraints", Ph.D. Thesis, Dept. of Electrical Engineering, Columbia University, Jun. 1994


Complete set of PhD theses can be found here


Journal Publications

  • K. Ramchandran, A. Ortega, K. M. Uz and M. Vetterli, "Multiresolution Broadcast for Digital HDTV Using Joint Source-Channel Coding", IEEE Journal on Selected Areas in Communications , Vol. 11, No. 1, Jan. 1993.
  • A. Ortega, K. Ramchandran and M. Vetterli, "Optimal Trellis-based Buffered Compression and Fast Approximations", IEEE Transactions on Image Processing, Vol. 3, No. 1, Jan. 1994.
  • K. Ramchandran, A. Ortega and M. Vetterli, "Bit Allocation for Dependent Quantization with Applications to Multiresolution and MPEG Video Coders", IEEE Transactions on Image Processing , Aug. 1994.
  • A. Ortega, M. Garrett and M. Vetterli, "Rate constraints for packet video transmission based on joint source/network criteria". Annales des Telecommunications. Vol. 50, No. 7-8, pp. 603--616, Jul.-Aug. 1995.
  • A. Ortega and M. Vetterli, Adaptive scalar quantization without side information, IEEE Transactions on Image Processing, Vol. 6, No. 5, pp. 665--676, May 1997.
  • C.-Y. Hsu, A. Ortega and A. R. Reibman, "Joint Selection of Source and Channel Rate for VBR Video Transmission under ATM Policing Constraints" IEEE Journal on Sel. Areas in Communications, Special Issue on Real-Time Video Services in Multimedia Networks, Vol. 15, No. 6, pp. 1016-1028, August 1997.
  • Liang-Jin Lin, Antonio Ortega, "Bit-Rate Control Using Piecewise Approximated Rate-Distortion Characteristic", IEEE Transactions on Circuits and Systems for Video Technology , Vol. 8, No. 4, pp. 446-459 , Aug. 1998.
  • T. V. Lakshman, A. Ortega and A. R. Reibman, "VBR video: Trade-offs and potentials ", Proceedings of the IEEE, Vol. 86, No. 5, pp. 952--973, May 1998.
  • A. Ortega and K. Ramchandran, "Rate-Distortion Techniques in Image and Video Compression," IEEE Signal Processing Magazine , pp. 23-50, Vol. 15, No. 6, Nov. 1998.
  • Chi-Yuan Hsu, Antonio Ortega and Masoud Khansari, ``Rate Control for Robust Video Transmission over Burst-Error Wireless Channels , IEEE Journal on Selected Areas in Communications, Special Issue on Multimedia Network Radios, Vol. 17, No. 5, pp. 756-773, May 1999.
  • Y. Yoo, A. Ortega and B. Yu, "Image Subband Coding using Progressive Classification and Adaptive Quantization", IEEE Transactions on Image Processing, Vol. 8, No. 12, pp. 1702-1715, Dec. 1999.
  • W. Woo and A. Ortega, "Optimal Blockwise Dependent Quantization for Stereo Image Coding", IEEE Transactions on Circuits and Systems for Video Technology , (Transactions letter), Sep. 1999.
  • C. Chrysafis and A. Ortega, "Line Based, Reduced Memory, Wavelet Image Compression IEEE Transactions on Image Processing , vol. 9, No. 3, pp. 378--389, March 2000.
  • W. Woo and A. Ortega, "Overlapped Block Disparity Compensation with Adaptive Windows for Stereo Image Coding", IEEE Transactions on Circuits and Systems for Video Technology , (Transactions letter), vol. 10, No. 2, pp. 194-200, March 2000.
  • K. Lengwehasatit and A. Ortega, "Probabilistic Partial Distance Fast Matching for Motion Estimation", IEEE Transactions on Circuits and Systems for Video Technology , Vol. 11, No. 2, pp. 139-152, Feb. 2001.
  • W. Jiang and A. Ortega, "Lifting Factorization Based Discrete Wavelet Transform Architecture Design," IEEE Transactions on Circuits and Systems for Video Technology , Vol. 11, No. 5, pp. 651--657, May 2001.
  • J. Cabrera, A. Ortega and J. I. Ronda, "Stochastic rate-control of video coders for wireless channels", IEEE Transactions on Circuits and Systems for Video Technology, Vol. 12, Num. 6, pp. 496--510, June 2002.
  • Z. Miao and A. Ortega, "Scalable Proxy Caching for Streaming Video Services over QOS and Best-effort networks " IEEE J. on Sel. Areas in Comm., Special issue on Internet Proxy Services, Accepted for publication, Dec. 2001.
  • R. Singh and A. Ortega, "Erasure Recovery in Predictive Coding Environmente using Multiple Description Coding", Journal of VLSI Signal Processing Systems for Signal, Image and Video Technology , Accepted for publication, Dec. 2001, to appear, 2002.
  • B. Beferull-Lozano and A. Ortega, "Efficient Quantization for Overcomplete Expansions in R^N", IEEE Transactions on Information Theory , Vol. 49, No. 1, pp. 129-150, January, 2003.
  • D. Comas, R. Singh, A. Ortega and F. Marques, "Unbalanced Multipled Description Video Coding Based on a Rate-Distortion Optimization", EURASIP Journal on Applied Signal Processing , Accepted for publication, Nov. 2002.
  • K. Demirciler and A. Ortega, "Vector Quantizer Design by Reduced Complexity Deterministic Annealing ", EURASIP ASP, 2005.
  • K. Lengwehasatit and A. Ortega, "Scalable Variable Complexity Approximate Forward DCT", IEEE Transactions on Circuits and Systems for Video Technology, Nov. 2004.
  • J. Cabrera, J.I. Ronda, A. Ortega, and N. Garcia, "Stochastic Rate Control of Interframe Video Coders for Lossy Channels ", IEEE Transactions on Circuits and Systems for Video Technology, In review, 2004.
  • Huisheng Wang, Ngai-Man Cheung and Antonio Ortega, "A Framework for Adaptive Scalable Video Coding Using Wyner-Ziv Techniques," Accepted in EURASIP Journal on Applied Signal Processing , 2005.
  • Ngai-Man Cheung, Caimu Tang, Antonio Ortega and Cauligi S. Raghavendra, "Efficient Wavelet-based Predictive Slepian-Wolf Coding for Hyperspectral Imagery," Submitted to EURASIP Journal on Signal Processing , 2005.


Book Chapters

  • A. Ortega, "Video transmission over ATM networks", in Microsystems Technology for Multimedia Applications, B. Sheu et al. Eds., IEEE Press, May 1995.
  • A. Ortega and M. Khansari, "Video Transmission over Wireless Links: State of the Art and Future Challenges", in Handbook of Communication Technologies: The Next Decade , R. Osso, Ed., CRC Press, 1999.
  • A. Ortega, ""Variable Bit-rate Video Coding ", in Compressed Video over Networks , M.-T. Sun and A.~R. Reibman, Eds, pp. 343-382, Marcel Dekker, New York, NY, 2000.
  • A. Ortega and Y. Liu, "Lossy Compression of Haptic Data", in Touch in Virtual Environments, M. McLaughlin, Ed., IMSC Press, Prentice-Hall, 2001.

Selected Refereed International Conferences

1993-94

1995

1996

1997

1998

1999

2000

2001

  • W. Pan, A. Ortega, I. Hajj-Ahmad and R.Sannino, "Proxy-Based Aopproaches for IDCT Accleration", VCIP 2001, San Jose, CA, Jan 2001.
  • H.Xie and A.Ortega,"Feature representation and Compresion for content based retrieval", VCIP 2001, San Jose, CA, Jan 2001.
  • N.Srinivasmurthy and A.Ortega,"Joint Compression-Classification with Quantizer/Classifier Dimension Mismatch",VCIP 2001, San Jose, CA, Jan 2001.
  • B. Beferull-Lozano and A.Ortega, "Construction of Low Complexity Regular Quantizers for Over-Complete Expansions in R^n ", In Proc. of DDC 2001, Snowbird, UT, Mar. 2001.
  • B. Beferull-Lozano and A.Ortega,"Efficient Quantizers for Over Complete Expansion in Rexp(N), in Proc. of ICASSP 2001, Salt Lake City, UT, May 2001.
  • J.Chou, K. Ramachandran and A. Ortega,"High Capacity Audio Data Hiding for Nosiy Channel", in Proc. of ICASSP 2001, Salt Lake City, UT, May 2001.
  • H. Komi and A. Ortega," Analysis of Cache Efficiency in 2D Wavelet Transform", in Proc. IEEE Intl. Conference on Multimedia and Expo, ICME 2001, Tokoyo, Japan, Aug 2001.
  • P. Sagetong and A. Ortega," Analytical Model-Based Bit Allocation for Wavelet Coding with Application to Multiple Description Coding and Region of Interest Coding ", in Proc. IEEE Intl. Conf. on Multimedia and Expo., ICME 2001, Tokoyo, Japan, Aug. 2001.
  • W. Jiang and A. Ortega,"A novel packet loss recovery technique for multimedia communication ", in Proc. of IEEE Intl. Conf. on Multimedia and Expo., ICME 2001, Tokyo, Japan Aug. 2001.
  • N.Srinivasmurthy, A. Ortega and S. Narayanan," Use of model transformation for distributed speech recognition",ISCA Workshop on Adaptation Methods for Speech Recognition, Sophia Antipolis, France, August 29-30, 2001.
  • N.Srinivasmurthy, A. Ortega and S. Narayanan,"Efficient Scalable Speech Compression for Scalable Speech Recognition ", In Proc. of Eurospeech 2001, Aarborg, Denmark, Sept. 2001.
  • D. Comas, R. Singh and A.Ortega," Rate-Distortion Optimization in a Robust Video Transmission Based on Unbalanced Multiple Description Coding", IEEE Worksop on Multimedia Signal Processing, MMSP01, Cannes, France, Oct. 2001.
  • S. Lee and A. Ortega," A Novel Approach for Image Compression in Digital Cameras with Bayer Color Filter Array", in Proc. of IEEE Intl. Conference on Image Processing,ICIUP '01, Thessaloniki,Greece, Oct. 2001.
  • J. Cabrera, A. Ortega and J.I.Ronda,"Stochastic Rate-Control of Video Coders for Wireless Channels", in Proc. of IEEE Intl. Conference on Image Processing, ICIP' 01, Thessaloniki, Greece, Oct. 2001.
  • P. Thiennviboon, A. Ortega and K. M.Chugg,"Simplified Grid Passing Algorithm with Application to Digital Image Halftoning ", in Proc. of IEEE Intl. Conference on Image Processing, ICIUP'01, Thessaloniki, Greece, Oct. 2001.
  • W. Pan and A. Ortega, "Buffer Control for Variable Complexity Fano Decoders ", Globecom 2001, San Antonio, TX, Nov. 2001.

2002

  • H. Chung, A. Ortega, A. A. Sawchuck, " Low Complexity Motion Estimation for Long Term Memory Motion Compensation", VCIP 2002, San Jose, CA, Jan 2002.
  • Z. Miao and A. Ortega, "Expected Run-Time Distortion Based Scheduling for Delivery of Scalable Media ", Packet Video Workshop 2002, Pittsburgh, PA, Jan. 2002.
  • R. Singh and A. Ortega,"Modeling Temporal Dependence in packet loss using universal modeling concepts", Packet Video Workshop 2002, Pittsburgh, PA.
  • L. Vasudevan and A. Ortega, "Processing-Aware Compression for Sensor Networks," 2nd IEEE Sensor Array and Multichannel Signal Processing Workshop, Aug. 2002.
  • J. Hespanha, A. Ortega and L. Vasudevan, "Towards the Control of Linear Systems with Minimum Bit-Rate ", 15th Intl. Symp. on Mathematical Theory of Networks and Systems, MTNS 2002, Notre Dame, IN, Aug. 2002.
  • P.Sagetong and A. Ortega," Rate Distortion Model and Analytical Bit Allocation for Wavelet based Region of Interest Coding", ICIP 2002, Oct. 2002.
  • H. Chung and A. Ortega," Low Compexity Motion Estimation Algorithm by Multiresolution Search for Long-Term Memory Motion Compensation", Submitted, ICIP 2002, Oct. 2002.
  • S. Y. Lee and A. Ortega," Optimal rate control for video coding based on a hybrid MMAX/MMSE criterion", ubmitted, ICIP 2002, Oct. 2002.
  • Z. Miao and A. Ortega,"Fast Adaptive Media Scheduling Based on Expected Run-Time Distortion", Proc. of Asilomar Conf. on Signals, Systems and Computers, Pacific Grove, CA, Nov. 2002.

2003

2004

  • Alexandre Ciancio and Antonio Ortega,"Distributed Wavelet Compression Algorithm for Wireless Sensor Networks Based on Lifting", International Conference on Acoustics, Speech and Signal Processing (ICASSP'04), Montreal, May 2004.
  • Joaquin Lopez, Jae Hoon Kim, Antonio Ortega, and George Chen, "Block-based Illumination Compensation and Search Techniques for Multiview Video Coding," Picture Coding Symposium, San Francisco, CA, Dec. 2004.
    PDF format
  • Huisheng Wang, Ngai-Man Cheung and Antonio Ortega, "WZS: Wyner-Ziv Scalable Predictive Video Coding", Picture Coding Symposium (PCS) 2004 , Dec. 2004. PDF format
  • Huisheng Wang and Antonio Ortega, "Scalable Predictive Coding by Nested Quantization with Layered Side Information", IEEE International Conference on Image Processing (ICIP) , 2004. PDF format

2005

  • Alexandre Ciancio and Antonio Ortega,"Distributed Wavelet Compression Algorithm for Wireless Multihop Sensor Networks Based on Lifting", International Conference on Acoustics, Speech and Signal Processing (ICASSP'05), Philadelphia, Mar 2005.
  • Jae Hoon Kim, Jonathan Garcia, and Antonio Ortega, "Dependent Bit Allocation in Multiview Video Coding," in Proc. of IEEE International Conference on Image Processing (ICIP), Genoa, Italy, Sep. 2005.
    PDF format
  • Y. H. Kim and A. Ortega, "Quantizer Design for Source localization in Sensor Networks". IEEE International Conference on Acoustic, Speech and Signal Processing (ICASSP), Philadelphia, March 2005. PDF format
  • Y. H. Kim and A. Ortega, "Quantizer Design and Distributed Encoding Algorithm for Source Localization in Sensor Networks". International Conference on Information Processing in Sensor Networks (IPSN), Los Angeles, April 2005.PDF format
  • I. Chong and A. Ortega, "Hardware Testing For Error Tolerant Multimedia Compression based on Linear Transforms". In Proc. of IEEE International Symposium on Defect and Fault Tolerance in VLSI Systems (DFT), Monterey, October 2005.PDF format
  • H. Chung and A. Ortega, "Analysis and testing for error tolerant motion estimation". In Proc. of IEEE International Symposium on Defect and Fault Tolerance in VLSI Systems (DFT), Monterey, October 2005.PDF format
  • Ngai-Man Cheung, Huisheng Wang and Antonio Ortega, "Correlation Estimation for Distributed Source Coding under Information Exchange Constraints," IEEE International Conference on Image Processing (ICIP) , 2005. PDF format
  • Caimu Tang, Ngai-Man Cheung, Antonio Ortega and Cauligi S. Raghavendra, "Efficient Inter-band Prediction and Wavelet Based Compression for Hyperspectral Imagery: A Distributed Source Coding Approach," IEEE Data Compression Conference (DCC) , 2005. PDF format
  • Huisheng Wang and Antonio Ortega, "Rate-Distortion Based Scheduling of Video with Multiple Decoding Paths", Image and Video Communications and Processing 2005 Conf., EI'2005 , Jan. 2005. PDF format


2006

  • I. Chong, H. Cheong, and A. Ortega, "New Quality Metric for Multimedia Compression Using Faulty Hardware". In Proc. of International Workshop on Video Processing and Quality Metrics for Consumer Electronics, Arizona, January 2006.PDF format










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