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Reversible data hiding with oriented and minimized distortions using cascading trellis coding

INFORMATION SCIENCES 2015年 317卷 170-180页

作者： Mao, Qian Li, Fan Chang, Chin-Chen Univ Shanghai Sci & Technol Sch Opt Elect & Comp Engn Shanghai 200093 Peoples R China Asia Univ Dept Comp Sci & Informat Engn Taichung 41354 Taiwan Feng Chia Univ Dept Informat Engn & Comp Sci Taichung 40724 Taiwan

Reversible data hiding technique usually generates low-quality images when the relative payload is high. This paper proposes a novel, reversible data hiding scheme that provides improved performances. First, a distortion-oriented, minimized, (DOM) embedding algorithm is proposed. By using a cascading trellis coding algorithm, the overall modifications to the host coefficients are minimal, and some specified host coefficients are kept intact. Following that, the proposed DOM algorithm is used in the discrete wavelet transform (DWT) domain. To increase the payload, both the scaling coefficients and the wavelet coefficients are involved in computation. However, by using the DOM algorithm, the scaling coefficients are kept unchanged. By these approaches, the proposed scheme provides high quality to the stego image and reversibility to the host image without the problems of overflow and underflow. Furthermore, by using a multi-round embedding operation, a high payload is achieved. Experimental results show that the proposed scheme outperforms the state-of-the-art reversible hiding schemes. (C) 2015 Elsevier Inc. All rights reserved.

关键词： Reversible data hiding trellis coding Discrete wavelet transform Oriented distortion

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MULTILEVEL SIGNALS AND trellis coding FOR DATA COMMUNICATION MODEMS

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COMPUTER COMMUNICATIONS 1985年第5期8卷 247-253页

作者： RASHVAND, HF Racal-Milgo Limited Landata House Station RoadHook Hants RG27 9JF UK

The special bandwidth efficiency features of coded single carrier multilevel data communication signals pave the way for implementation of high speed data transmission via public analogue telephone networks. The minimum distance of nonredundant coded signals and the minimum free-distance of redundant coded signals are discussed and their influence on error rates is analysed. Security of data on public networks, where it is subject to noise and interference, is improved by advanced trellis coding. Combining the trellis with multilevel signalling provides high speed data modems with security against nearly all spurious signals, transient noise and circuit impairments. The signal structure and coding algorithm of CCITT's recent recommendations on 9600 bit/s and 14 400 bit/s modems for PSTN and leased lines are also discussed.

关键词： data transmission modems telephone networks trellis coding

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Minimizing Embedding Impact for H.264 Steganography by Progressive trellis coding

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IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY 2021年 16卷 333-345页

作者： Wang, Yu Cao, Yun Zhao, Xianfeng Chinese Acad Sci Inst Informat Engn State Key Lab Informat Secur Beijing 100195 Peoples R China Univ Chinese Acad Sci Sch Cyber Secur Beijing 100195 Peoples R China

This paper proposes a novel coding strategy to achieve distortion minimization for H.264 steganography with quantized discrete cosine transform (QDCT) coefficients. Currently, with the help of syndrome-trellis codes (STCs), state-of-the-art image steganography embeds messages while minimizing a heuristically defined distortion function. However, this concept cannot be directly ported to steganography using compressed video as the cover media. According to the intra prediction principle, an H.264 QDCT coefficient block is predicted and coded based on previously encoded blocks, so even a slight embedding change will set off a chain reaction in the remaining cover blocks. Considering the cover block dependency, we make necessary changes to the standard trellis coding structure so as to be applicable for the joint compression embedding scenario. During the coding/embedding procedure, we maintain multiple contexts corresponding to possible optimal routes, and retrace each route periodically to determine how each cover block should be modified. After each modification, the remaining cover blocks, as well as their embedding costs, are re-evaluated, and each context is updated to reflect the embedding effect. In this way, the global optimality can be approached progressively in a block-by-block manner, so our proposed method is named progressive trellis coding (PTC). Extensive experiments have been conducted, and corresponding results show that the adoption of PTC brings about a significant gain in embedding performance.

关键词： Distortion Encoding Minimization Convolutional codes Standards Art Video coding H 264 steganography embedding impact QDCT coefficient trellis coding

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JOINT SOURCE AND CHANNEL trellis coding OF LINE SPECTRUM PAIR PARAMETERS

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SPEECH COMMUNICATION 1992年第2-3期11卷 149-158页

作者： SECKER, P PERKIS, A NORWEGIAN INST TECHNOL DIV TELECOMMUN N-7034 TRONDHEIM NORWAY

An innovative method of coding Line Spectrum Pair (LSP) parameters for transmission over noisy channels is presented. Typically, low bit-rate speech coders use these parameters to convey perceptually important spectral information. Thus it is necessary that these parameters are not only efficiently quantized but preserved during transmission. The scheme uses a joint source and channel coding technique applied to a concatenated trellis structure. Operating as a source coder, the system encodes below the 1 dB spectral distortion limit. It is shown that by modifying the encoder cost function to include the expected channel distortion, the code exhibits improved robustness to channel errors. This is accomplished with minimal increase in complexity and without increase in bit-rate. It is noted that the scheme performs well over a wide range of channel bit error rates and compares favourably with a standard scalar LSP quantizer tandemed with a channel coder both in terms of bit-rate and channel noise immunity,

关键词： JOINT SOURCE AND CHANNEL coding LINE SPECTRUM PAIR trellis coding SPEECH coding

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IMPROVING THE PERFORMANCE OF DISTRIBUTED TURBO trellis coding SCHEME OVER RELAY CHANNEL

IMPROVING THE PERFORMANCE OF DISTRIBUTED TURBO TRELLIS CODIN...

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22nd IEEE Signal Processing and Communications Applications Conference (SIU)

作者： Yilmaz, Mumtaz Adnan Menderes Univ Elekt & Elekt Muhendisligi Bolumu Aydin Turkey

ISBN: (纸本)9781479948741

In this work, for a turbo trellis coded communication system over relay channel, system performance is tried to be enhanced by employing different mappings at relay and source. Moreover, considering the trellis encoders at the source and relay together, the trellis of relay encoder is designed to minimize the overall system symbol error rate. The performance of the proposed algoritms are figured out via simulations and superior performance is achieved compared with classical channel coded scheme.

关键词： relay channel trellis coding mapping

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NASA Technical Reports Server (Ntrs) 19940009436: trellis coding with Continuous Phase Modulation (Cpm) for Satellite-Based Land-Mobile Communications

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2017年

NASA Technical Reports Server (Ntrs) 19940009436: trellis coding with Continuous Phase Modulation (Cpm) for Satellite-Based Land-Mobile Communications by NASA Technical Reports Server (Ntrs); published by

关键词： (cpm) (ntrs) 19940009436: breadboard models circuits coding communications computerized simulation doppler effect estimating fading frequency shift mobile communication systems nasa technical reports server (ntrs) phase modulation satellite communication signal detection signal transmission statistical analysis symbols trellis coding

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NASA Technical Reports Server (Ntrs) 19920014857: Combined trellis coding and Feedforward Processing for Mss Applications

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2017年

NASA Technical Reports Server (Ntrs) 19920014857: Combined trellis coding and Feedforward Processing for Mss Applications by NASA Technical Reports Server (Ntrs); published by

关键词： (ntrs) 19920014857: applications bit error rate channels (data transmission) coding combined computerized simulation divsalar, d. jedrey, t. lay, n. mathematical models modulation nasa technical reports server (ntrs) performance prediction phase shift keying rafferty, w. signal encoding signal fading simon, m. k. trellis coding

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trellis PREcoding - COMBINED coding, PREcoding AND SHAPING FOR INTERSYMBOL INTERFERENCE CHANNELS

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IEEE TRANSACTIONS ON INFORMATION THEORY 1992年第2期38卷 301-314页

作者： EYUBOGLU, MV FORNEY, GD Motorola Codex Mansfield MA USA

On a linear Gaussian channel with intersymbol interference (ISI), trellis precoding is a method that achieves the equalization performance of Tomlinson-Harashima (TH) precoding, the coding gain of any known lattice-type coset code, and a considerable shaping gain. trellis precoding may be viewed as a generalization of trellis shaping to Gaussian ISI channels;or, alternatively, as a generalization of TH precoding with coded modulation that achieves shaping gain. With trellis precoding channel capacity can be approached essentially as closely on any strictly band-limited, high signal-to-noise ratio Gaussian channel as on the ideal channel, using the same coding techniques. For first- or second-order FIR and IIR channels, it is shown that shaping gains close to 1 dB can be obtained with a two-dimensional 4-state trellis code. trellis precoding is quite practical whenever channel information is available at the transmitter.

关键词： EQUALIZATION PREcoding SHAPING trellis coding

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Adaptive coding rate trellis-coded 8PSK system

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IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES 1997年第7期E80A卷 1190-1195页

作者： Nakajima, S Department of Information and Electronics Engineering Niigata Institute of Technology Kashiwazaki-shi 945-11 Japan

This paper presents an adaptive coding rate trellis coded octal phase-shift keying sq stem with rates of 1/3, 1/2, 2/3, and 5/6, under the restriction of a constant transmission bit rate. where the ratio between the information bits and error-correcting redundant bits varies according to channel conditions. This system has the advantage of using a simple modem configuration. Because it has no need to change modulation type, transmitter/receiver filters, and clock and carrier recovery circuits. and it can use a convenient Read-Only-Memory table encoder. As for code design. the trellis structures and its signal assignments For rates of 1/3, 1/2, and 5/6 ale proposed and investigated. and their BER performances are estimated. As a result, when the system requirement is to keep the bit error rate of 10(-4), this system can operate at the lower Eb/No value of 1.5 dB on the reduction of transmitting information bits.

关键词： adaptive modulation trellis coding PSK error correction

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Space-frequency adaptive trellis-coded wavelet image coding

Space-frequency adaptive trellis-coded wavelet image coding

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4th Conference on Wavelet Applications in Signal and Image Processing

作者： Nuri, V SIMAGES INC MENLO PKCA 94025

ISBN: (纸本)0819422134

In this paper, a high-quality, space-frequency adaptive, trellis coded wavelet image codec is presented. The algorithm seeks jointly optimal space and frequency segmentation of an image. For this, first, wavelet packets are formed to localize the high-energy frequency bands. Then, the wavelet coefficients are further classified to maximize the coding gain. Design target is set to minimize Lagrangian cost functions which are formed with distortion in l² norm being the cost and coding rate as constraint. Resultant mapping is used to quantize the wavelet coefficients with trellis code quantization. This is followed by adaptive arithmetic coding producing the final compressed bitstream. Described approach is tested on several ISO standard images and results are compared to other compression techniques. Representative examples are included.

关键词： wavelets space-frequency analysis image classification trellis coding image compression

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