International Conference on Acoustics, Speech, and Signal Processing, 2000
In this paper, we propose a known-host-state methodology for designing,image,watermarks,that are ... more In this paper, we propose a known-host-state methodology for designing,image,watermarks,that are particularly robust,to,compression.,The,proposed,approach outperforms,traditional spread spectrum,watermarking across all JPEG quality factors. The fundamental,approach is based on using 2D chirps as spreading functions, followed by chirp transform to recover the watermark. The reason for enhanced,performance is the ability to spectrally shape,the chirp to match,image,content,and,JPEG quantization. The energy localization of chirp
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings., 2003
Page 1. TIME-FREQUENCY ANALYSIS FOR MANEUVERING TARGET DETECTION IN OVER-THE-HORIZON RADARS Yamin... more Page 1. TIME-FREQUENCY ANALYSIS FOR MANEUVERING TARGET DETECTION IN OVER-THE-HORIZON RADARS Yamin Zhangt, Moeness G. Amint, BehzadMohammadi Dogahet, and Gordon J. Frazed + Center for Advanced ...
MILCOM 2007 - IEEE Military Communications Conference, 2007
Abstract Allocating limited resources such as bandwidth and power in a multi-hop wireless networ... more Abstract Allocating limited resources such as bandwidth and power in a multi-hop wireless network can be formulated as a Network Utility Maximization (NUM) problem. In this approach, both source transmitting and link relaying nodes ex-change information ...
2011 Digital Signal Processing and Signal Processing Education Meeting (DSP/SPE), 2011
Quantization of signals is required for many transmission, storage and compression applications. ... more Quantization of signals is required for many transmission, storage and compression applications. The original signal is quantized at the encoder side. At the decoder side, a replica of the original signal that should resemble the original signal in some sense is recovered. Present quantizers make an effort to reduce the distortion of the signal in the sense of reproduction fidelity.
Advanced Signal Processing Algorithms, Architectures, and Implementations XIV, 2004
Digital watermarking using two-dimensional FM waveforms. [Proceedings of SPIE 5559, 277 (2004)]. ... more Digital watermarking using two-dimensional FM waveforms. [Proceedings of SPIE 5559, 277 (2004)]. Yimin Zhang, Behzad Mohammadi Dogahe, Bijan Mobasseri, Moeness G. Amin. Abstract. In this paper, we propose two-dimensional ...
International Conference on Acoustics, Speech, and Signal Processing, 2000
In this paper, we propose a known-host-state methodology for designing,image,watermarks,that are ... more In this paper, we propose a known-host-state methodology for designing,image,watermarks,that are particularly robust,to,compression.,The,proposed,approach outperforms,traditional spread spectrum,watermarking across all JPEG quality factors. The fundamental,approach is based on using 2D chirps as spreading functions, followed by chirp transform to recover the watermark. The reason for enhanced,performance is the ability to spectrally shape,the chirp to match,image,content,and,JPEG quantization. The energy localization of chirp
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings., 2003
Page 1. TIME-FREQUENCY ANALYSIS FOR MANEUVERING TARGET DETECTION IN OVER-THE-HORIZON RADARS Yamin... more Page 1. TIME-FREQUENCY ANALYSIS FOR MANEUVERING TARGET DETECTION IN OVER-THE-HORIZON RADARS Yamin Zhangt, Moeness G. Amint, BehzadMohammadi Dogahet, and Gordon J. Frazed + Center for Advanced ...
MILCOM 2007 - IEEE Military Communications Conference, 2007
Abstract Allocating limited resources such as bandwidth and power in a multi-hop wireless networ... more Abstract Allocating limited resources such as bandwidth and power in a multi-hop wireless network can be formulated as a Network Utility Maximization (NUM) problem. In this approach, both source transmitting and link relaying nodes ex-change information ...
2011 Digital Signal Processing and Signal Processing Education Meeting (DSP/SPE), 2011
Quantization of signals is required for many transmission, storage and compression applications. ... more Quantization of signals is required for many transmission, storage and compression applications. The original signal is quantized at the encoder side. At the decoder side, a replica of the original signal that should resemble the original signal in some sense is recovered. Present quantizers make an effort to reduce the distortion of the signal in the sense of reproduction fidelity.
Advanced Signal Processing Algorithms, Architectures, and Implementations XIV, 2004
Digital watermarking using two-dimensional FM waveforms. [Proceedings of SPIE 5559, 277 (2004)]. ... more Digital watermarking using two-dimensional FM waveforms. [Proceedings of SPIE 5559, 277 (2004)]. Yimin Zhang, Behzad Mohammadi Dogahe, Bijan Mobasseri, Moeness G. Amin. Abstract. In this paper, we propose two-dimensional ...
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