• 3182 Citations
  • 26 h-Index
1900 …2021
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Research Output 1900 2019

2003
1 Citation (Scopus)

An efficient long-term memory motion compensated prediction scheme and application to error-resilient video transmission

Lam, T. T., Karam, L., Tyldesley, K. & Abousleman, G. P., 2003, Proceedings - 7th International Symposium on Signal Processing and Its Applications, ISSPA 2003. IEEE Computer Society, Vol. 1. p. 101-104 4 p. 1224650

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Data storage equipment
1 Citation (Scopus)

Error-Resilient Multiple Description Video Coding for Wireless Transmission over Multiple Iridium Channels

Tyldesley, K., Abousleman, G. P. & Karam, L., 2003, Proceedings of SPIE - The International Society for Optical Engineering. Rahman, Z., Schowengerdt, R. A. & Reichenbach, S. E. (eds.). Vol. 5108. p. 110-122 13 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Iridium
iridium
Image coding
coding
Multiplexing
10 Citations (Scopus)

JPEG2000 encoding with perceptual distortion control

Liu, Z., Karam, L. & Watson, A. B., 2003, IEEE International Conference on Image Processing. Vol. 1. p. 637-640 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image quality

Mutual information analysis of JPEG2000 contexts

Liu, Z. & Karam, L., 2003, Proceedings of SPIE - The International Society for Optical Engineering. Vasudev, B., Hsing, T. R., Tescher, A. G. & Ebrahimi, T. (eds.). Vol. 5022 I. p. 573-582 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

information analysis
Information analysis
Image compression
Dynamic programming
Probability distributions
18 Citations (Scopus)

On-line laboratories for image and two-dimensional signal processing

Yasin, M., Karam, L. & Spanias, A., 2003, Proceedings - Frontiers in Education Conference, FIE. Institute of Electrical and Electronics Engineers Inc., Vol. 1. p. T3E19-T3E22 1263347

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Signal processing
Image processing
Image enhancement
FIR filters
Digital signal processing
11 Citations (Scopus)

On-line laboratories for image and two-dimensional signal processing

Yasin, M., Karam, L. & Spanias, A., 2003, Proceedings - Frontiers in Education Conference. Vol. 1.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Signal processing
Image processing
Image enhancement
FIR filters
Digital signal processing
2 Citations (Scopus)

On-line laboratories for image and two-dimensional signal processing using 2D J-DSP

Yasin, M., Karam, L. & Spanias, A., 2003, ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol. 3. p. 785-788 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Digital signal processing
signal processing
Signal processing
Image processing
Students
19 Citations (Scopus)

Wavelet-based adaptive image denoising with edge preservation

Zhan, C. Q. & Karam, L., 2003, IEEE International Conference on Image Processing. Vol. 1. p. 97-100 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Correlation theory
Image denoising
Discrete wavelet transforms
Decomposition
Statistical Models
2002
132 Citations (Scopus)

Adaptive image coding with perceptual distortion control

Höntsch, I. & Karam, L., Mar 2002, In : IEEE Transactions on Image Processing. 11, 3, p. 213-222 10 p.

Research output: Contribution to journalArticle

Image Coding
Image coding
Coding
Masking
Discrete cosine transforms

An end to end, real time, CDPD wireless video coding and transmission system

Liu, Z. & Karam, L., 2002, Conference Record of the Asilomar Conference on Signals, Systems and Computers. Matthews, M. B. (ed.). Vol. 2. p. 1875-1879 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image coding
Bandwidth
Wireless networks
Servers
Feedback
1 Citation (Scopus)

Context formation by mutual information maximization

Liu, Z. & Karam, L., 2002, IEEE International Conference on Image Processing. Vol. 3.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image compression
Entropy
4 Citations (Scopus)

Error-resilient image coding and transmission over wireless channels

Gao, L., Karam, L., Reisslein, M. & Abousleman, G. P., 2002, Proceedings - IEEE International Symposium on Circuits and Systems. Vol. 5.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image communication systems
Packet loss
Image coding
Uridine Diphosphate
Frequency bands
31 Citations (Scopus)

On-line laboratories for speech and image processing and for communication systems using J-DSP

Spanias, A., Atti, V., Ko, Y., Thrasyvoulou, T., Yasin, M., Zaman, M., Duman, T., Karam, L., Papandreou-Suppappola, A. & Tsakalis, K., 2002, Proceedings of 2002 IEEE 10th Digital Signal Processing Workshop, DSP 2002 and 2nd Signal Processing Education Workshop, SPE 2002. Institute of Electrical and Electronics Engineers Inc., p. 174-179 6 p. 1231098

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Speech processing
Communication systems
Image processing
Speech coding
Pulse code modulation
5 Citations (Scopus)

Quantifying the intra and inter subband correlations in the zero-tree-based wavelet image coders

Liu, Z. & Karam, L., 2002, Conference Record of the Asilomar Conference on Signals, Systems and Computers. Matthews, M. B. (ed.). Vol. 2. p. 1730-1734 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Discrete wavelet transforms
Redundancy
Image compression
Data structures
Pixels
17 Citations (Scopus)

Robust hyperspectral image coding with channel-optimized trellis-coded quantization

Abousleman, G. P., Lam, T. T. & Karam, L., Apr 2002, In : IEEE Transactions on Geoscience and Remote Sensing. 40, 4, p. 820-830 11 p.

Research output: Contribution to journalArticle

coders
Image coding
coding
Channel coding
Image quality
2001
15 Citations (Scopus)

Canonic signed digit Chebyshev FIR filter design

Hasan, Y. M., Karam, L., Falkinburg, M., Helwig, A. & Ronning, M., Jun 2001, In : IEEE Signal Processing Letters. 8, 6, p. 167-169 3 p.

Research output: Contribution to journalArticle

Chebyshev filters
Filter Design
FIR filters
Impulse Response
Signed
2 Citations (Scopus)

Coding of digital imagery for transmission over multiple noisy channels

Channappayya, S. S., Abousleman, G. P. & Karam, L., 2001, ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol. 3. p. 1729-1732 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image coding
Multiplexing
imagery
Interpolation
coding

Image coding for transmission over multiple noisy channels using punctured convolutional codes and trellis-coded quantization

Channappayya, S. S., Abousleman, G. P. & Karam, L., 2001, IEEE International Conference on Image Processing. Vol. 1. p. 106-109 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Convolutional codes
Channel coding
Image coding
Multiplexing
Interpolation

Image coding over noisy channels with memory

Giguet, D., Abousleman, G. P. & Karam, L., 2001, Proceedings of SPIE - The International Society for Optical Engineering. Szu, H. H., Donoho, D. L., Lohmann, A. W., Campbell, W. J. & Bussy, J. R. (eds.). Vol. 4391. p. 181-190 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image coding
coding
counters
Data storage equipment
coders

Image coding with channel-optimized trellis-coded quantization for channels with memory

Giguet, D., Karam, L. & Abousleman, G. P., 2001, Conference Record of the Asilomar Conference on Signals, Systems and Computers. Matthews, M. B. (ed.). Vol. 1. p. 788-791 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image coding
Data storage equipment
Statistics
3 Citations (Scopus)

Joint source-channel coding of images using punctured convolutional codes and trellis-coded quantization

Channappayya, S. S., Abousleman, G. P. & Karam, L., 2001, Proceedings - IEEE International Symposium on Circuits and Systems. Vol. 5. p. 133-136 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Convolutional codes
Channel coding
5 Citations (Scopus)

Very low bit-rate target-based image coding

Giguet, D., Karam, L. & Abousleman, G. P., 2001, Conference Record of the Asilomar Conference on Signals, Systems and Computers. Matthews, M. B. (ed.). Vol. 1. p. 778-782 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image coding
Image communication systems
2000
43 Citations (Scopus)

An efficient embedded zerotree wavelet image codec based on intraband partitioning

Liu, Z. & Karam, L., 2000, IEEE International Conference on Image Processing. Vol. 3.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image coding
Wavelet transforms
7 Citations (Scopus)

Canonic signed digit FIR filter design

Hasan, Y. M., Karam, L., Falkinburg, M., Helwig, A. & Ronning, M., 2000, Conference Record of the Asilomar Conference on Signals, Systems and Computers. Vol. 2. p. 1653-1656 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

FIR filters
Adders
Digital filters
Software packages
Hardware

Channel-optimized trellis-coded quantization for channels with memory

Giguet, D., Abousleman, G. P. & Karam, L., 2000, Conference Record of the Asilomar Conference on Signals, Systems and Computers. Vol. 2. p. 1087-1091 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Data storage equipment
Error probability

Error-resilient video coding and application to telemedicine

Liu, Z., Karam, L., Abousleman, G. P., Key, T. & Razzouk, B., 2000, Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems. Vol. 1. p. 533-536 4 p. 911595

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Telemedicine
Image coding
Channel coding
Communication
Developing countries

Error-resilient video coding with channel-optimized trellis-coded quantization

Liu, Z., Abousleman, G. P. & Karam, L., 2000, 2000 IEEE Wireless Communications and Networking Conference. p. 202-206 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image coding
Motion compensation
Channel coding
Entropy

Error-robust video coding with channel-optimized trellis-coded quantization

Liu, Z., Abousleman, G. P. & Karam, L., 2000, Conference Record of the Asilomar Conference on Signals, Systems and Computers. Vol. 2. p. 1389-1393 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image coding
Bit error rate
Motion compensation
Channel coding
Entropy
27 Citations (Scopus)

Image coding with robust channel-optimized trellis-coded quantization

Lam, T. T., Abousleman, G. P. & Karam, L., Jun 2000, In : IEEE Journal on Selected Areas in Communications. 18, 6, p. 940-951 12 p.

Research output: Contribution to journalArticle

Image coding
Channel coding
Bit error rate
104 Citations (Scopus)

Locally adaptive perceptual image coding

Höntsch, I. & Karam, L., Sep 2000, In : IEEE Transactions on Image Processing. 9, 9, p. 1472-1483 12 p.

Research output: Contribution to journalArticle

Image Coding
Masking
Image compression
Image coding
Quantization
88 Citations (Scopus)

Morphological text extraction from images

Hasan, Y. M. Y. & Karam, L., Nov 2000, In : IEEE Transactions on Image Processing. 9, 11, p. 1978-1983 6 p.

Research output: Contribution to journalArticle

Thresholding
Skew
Text
2 Citations (Scopus)

Multiple description channel-optimized trellis-coded quantization

Lam, T. T., Abousleman, G. P. & Karam, L., 2000, ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. IEEE, Vol. 5. p. 2645-2648 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Bit error rate
Packet loss
Tensors
Communication systems
counters
2 Citations (Scopus)

Prediction of the quality of JPEG-compressed color images based on the SCIELAB metric

Fahmy, G. F. & Karam, L., 2000, Conference Record of the Asilomar Conference on Signals, Systems and Computers. Vol. 2. p. 1054-1057 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Color
Image compression
Image quality
5 Citations (Scopus)

Wavelet-based perceptually lossless coding of R-G-B images

Marino, F., Acharya, T. & Karam, L., 2000, In : Integrated Computer-Aided Engineering. 7, 2, p. 117-134 18 p.

Research output: Contribution to journalArticle

Wavelets
Compression
Coding
Digital cameras
Application specific integrated circuits
1999

Channel-optimized hyperspectral image coding

Abousleman, G. P., Lam, T. T. & Karam, L., 1999, Proceedings of SPIE - The International Society for Optical Engineering. Society of Photo-Optical Instrumentation Engineers, Vol. 3717. p. 92-103 12 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

coders
Image coding
coding
Channel coding
Degradation

Channel-optimized transform coding of imagery

Abousleman, G. P., Lam, T. T. & Karam, L., 1999, Proceedings of SPIE - The International Society for Optical Engineering. Society of Photo-Optical Instrumentation Engineers, Vol. 3716. p. 80-90 11 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

imagery
coders
coding
Channel coding
Image coding
32 Citations (Scopus)

Chebyshev digital FIR filter design

Karam, L. & McClellan, J. H., Jul 1999, In : Signal Processing. 76, 1, p. 17-36 20 p.

Research output: Contribution to journalArticle

FIR filters
Digital filters
MATLAB
Signal processing
Specifications

Perceptually-tuned image coder with channel-optimized trellis-coded quantization

Lam, T. T., Abousleman, G. P. & Karam, L., 1999, IEEE International Conference on Image Processing. Los Alamitos, CA, United States: IEEE, Vol. 1. p. 421-425 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wavelet decomposition
Channel coding
Image coding
Entropy
5 Citations (Scopus)

Robust image coding using perceptually-tuned channel-optimized trellis-coded quantization

Lam, T. T., Karam, L. & Abousleman, G. P., 1999, Midwest Symposium on Circuits and Systems. Piscataway, NJ, United States: IEEE, Vol. 2. p. 1131-1134 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Channel coding
Image coding
Tuning

Scalable, subband-based video coding with a locally-adaptive perceptual distortion measure

Hontsch, I. S. & Karam, L., 1999, Conference Record of the Asilomar Conference on Signals, Systems and Computers. IEEE, Vol. 2. p. 1453-1457 5 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

Image coding
10 Citations (Scopus)

Two-dimensional FIR filter design by transformation

Karam, L., 1999, In : IEEE Transactions on Signal Processing. 47, 5, p. 1474-1478 5 p.

Research output: Contribution to journalArticle

FIR filters
1 Citation (Scopus)

Wavelet-based image coder with channel-optimized trellis-coded quantization

Lam, T. T., Abousleman, G. P. & Karam, L., 1999, ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. IEEE, Vol. 6. p. 3201-3204 4 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

coders
Channel coding
Image coding
coding
optimization
1998
1 Citation (Scopus)

Automatic detection and extraction of perceptually significant visual features

Black, J. & Karam, L., 1998, Conference Record of the Asilomar Conference on Signals, Systems and Computers. Farques, M. P. & Hippenstiel, R. D. (eds.). IEEE Comp Soc, Vol. 1. p. 315-319 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Masks
4 Citations (Scopus)

DWT-based perceptually lossless color image compression architecture

Marino, F., Acharya, T. & Karam, L., 1998, Conference Record of the Asilomar Conference on Signals, Systems and Computers. Matthews, M. B. (ed.). IEEE Comp Soc, Vol. 1. p. 149-153 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image compression
Color
Throughput
4 Citations (Scopus)

Locally-adaptive image coding based on a perceptual target distortion

Hontsch, I. & Karam, L., 1998, ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. IEEE, Vol. 5. p. 2569-2572 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image coding
coding
masking
coders
thresholds
2 Citations (Scopus)

Locally-adaptive perceptual quantization without side information for DCT coefficients

Hontsch, I. S. & Karam, L., 1998, Conference Record of the Asilomar Conference on Signals, Systems and Computers. Farques, M. P. & Hippenstiel, R. D. (eds.). IEEE Comp Soc, Vol. 2. p. 995-999 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Entropy
1997
22 Citations (Scopus)

APIC: Adaptive perceptual image coding based on subband decomposition with locally adaptive perceptual weighting

Hontsch, I. & Karam, L., 1997, IEEE International Conference on Image Processing. Los Alamitos, CA, United States: IEEE Comp Soc, Vol. 1. p. 37-40 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image coding
Pixels
Decomposition
Image compression
25 Citations (Scopus)

Efficient design of digital filters for 2-d and 3-d depth migration

Karam, L., 1997, In : IEEE Transactions on Signal Processing. 45, 4, p. 1036-1044 9 p.

Research output: Contribution to journalArticle

Digital filters
Extrapolation
1 Citation (Scopus)

Locally adaptive perceptual quantization without side information for compression of visual data

Hontsch, I. & Karam, L., 1997, Conference Record / IEEE Global Telecommunications Conference. Anon (ed.). Piscataway, NJ, United States: IEEE, Vol. 2. p. 1042-1046 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Quantization (signal)
Data compression
Image compression
Adaptive algorithms
Entropy

Multidimensional FIR filter design by transformation

Karam, L., 1997, In : IEEE Transactions on Signal Processing. 45, 9, p. 2405 1 p.

Research output: Contribution to journalArticle

FIR filters
Polynomials
Frequency response