中国科学院机构知识库网格系统: 检索

A reversible data hiding method based on bitmap prediction for AMBTC compressed hyperspectral images 期刊论文 OAI收割
JOURNAL OF INFORMATION SECURITY AND APPLICATIONS, 2024, 卷号: 81, 页码: 15
作者: Zhang, Xiaoran; Pan, Zhibin; Zhou, Quan; Fan, Guojun; Dong, Jing

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收藏 | 浏览/下载：26/0 | 提交时间：2024/03/27

Absolute moment block truncation coding (AMBTC) Hyperspectral images Reversible data hiding (RDH) Prediction of bitmap Adaptive embedding order Dynamical embedding scheme

A reversible data hiding method based on bitmap prediction for AMBTC compressed hyperspectral images 期刊论文 OAI收割
JOURNAL OF INFORMATION SECURITY AND APPLICATIONS, 2024, 卷号: 81
作者: Zhang, Xiaoran; Pan, Zhibin; Zhou, Quan; Fan, Guojun; Dong, Jing

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收藏 | 浏览/下载：48/0 | 提交时间：2024/03/26

Absolute moment block truncation coding (AMBTC) Hyperspectral images Reversible data hiding (RDH) Prediction of bitmap Adaptive embedding order Dynamical embedding scheme

Reliable Cross-Technology Communication With Physical-Layer Acknowledgement 期刊论文 OAI收割
IEEE TRANSACTIONS ON COMMUNICATIONS, 2020, 卷号: 68, 期号: 8, 页码: 5175-5187
作者: He, Hao; Su, Jian; Chen, Yongrui; Li, Zhijun; Li, Lingang

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收藏 | 浏览/下载：26/0 | 提交时间：2020/09/28

Reliability Wireless fidelity Zigbee Encoding Wireless communication Data communication Throughput Cross-technology communication acknowledgement reliability coding scheme

Uniquely Decodable Codes for Physical-Layer Network Coding in Wireless Cooperative Communications 期刊论文 OAI收割
Ieee Systems Journal, 2019, 卷号: 13, 期号: 4, 页码: 3956-3967
作者: Q.Y.Yu; Y.T.Li; W.X.Meng; W.Xiang

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收藏 | 浏览/下载：16/0 | 提交时间：2020/08/24

Cooperative communications,multiple-access channel,physical-layer,network coding (PNC),uniquely decodable codes (UDCs),multiple-access,ldpc,codebooks,channel,scheme,Computer Science,Engineering,Operations Research & Management Science,Telecommunications

Doppler-robust high-spectrum-efficiency VCM-OFDM scheme for low Earth orbit satellites broadband data transmission 期刊论文 OAI收割
IET COMMUNICATIONS, 2018, 卷号: 12, 期号: 1, 页码: 35-43
作者: Li, Jionghui; Xiong, Weiming; Sun, Geng; Wang, Zhugang; Huang, Yonghui

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收藏 | 浏览/下载：74/0 | 提交时间：2018/03/02

Satellite Ground Stations Satellite Links Radio Receivers Radio Transmitters Ofdm Modulation Modulation Coding Doppler Shift Filtering Theory Doppler-robust High-spectrum-efficiency Vcm-ofdm Scheme Low Earth Orbit Satellites Broadband Data Transmission High-efficiency Satellite-ground Downlink Data Transmission System Limited Spectrum Resource Dynamic Link Conditions Orbital Motion Leo Satellite Variable Coding Modulated Orthogonal Frequency Division Multiplexing Satellite On-board Transmitter Ground Station Receiver Filtered-ofdm Signal Adjustable Codmod Spectral Efficiency Physical Layer Frame Structure Doppler Frequency Shift Compensation Future Gigabit X-band Reliable Satellite-ground Downlink Transmissions

Image compression and encryption scheme using fractal dictionary and Julia set 期刊论文 OAI收割
IET IMAGE PROCESSING, 2015, 卷号: 9, 期号: 3, 页码: 173-183
作者: Sun, Yuanyuan; Xu, Rudan; Chen, Lina; Hu, Xiaopeng

收藏 | 浏览/下载：42/0 | 提交时间：2016/11/11

data compression image coding cryptography fractals image reconstruction image compression image encryption scheme fractal dictionary Julia set data transmission security data storage security multimedia data compression-encryption scheme image reconstruction tiny perturbation stream cipher encryption diffusion process plaintext attack time consumption reduction

Image coding using wavelet-based compressive sampling (EI CONFERENCE) 会议论文 OAI收割
2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012, October 28, 2012 - October 29, 2012, Hangzhou, China
作者: Li J.; Li J.; Li J.

收藏 | 浏览/下载：43/0 | 提交时间：2013/03/25

In this paper we proposed a novel coding scheme is proposed using wavelet-based CS framework for nature image. First two-dimension discrete wavelet transform (DWT) is applied to a nature image for sparse representation. After multi-scale DWT the low-frequency sub-band and high-frequency sub-bands are re-sampled separately. According to the statistical dependences among DWT coefficients we allocate different measurements to low- and high-frequency component. Then the measurements samples can be quantized. The quantize samples are entropy coded and forward correct coding (FEC). Finally the compressed streams are transmitted. At the decoder one can simply reconstruct the image via l1 minimization. Experimental results show that the proposed wavelet-based CS scheme achieves better compression performance against the relevant existing solutions.

Image compression based on contourlet and no lists SPIHT (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
作者: Zhang S.

收藏 | 浏览/下载：45/0 | 提交时间：2013/03/25

The volume of raw image data captured by the high resolution camera is extremely huge. Thus the efficient image compression method should be used to decrease the bit rate. The image compression method based on wavelet is used more widely nowadays. However two dimensional wavelet is only the tensor product of the one dimensional wavelet whose support region of basis function is extended from interval to square. Contourlet is an image multiscale geometric analysis tool which could represent image sparsely and has strong capability of nonlinear approximation. The basis function of contourlet is multidirectional and anisotropic. Nevertheless contourlet is redundant. So the non-redundant Wavelet Based Contourlet Transform (WBCT) is used in this paper. The SPIHT algorithm is very efficient way to coding the significant coefficients. And the improved no lists SPIHT is more easy to implemented by hardware. Image compression method based on the combination of both wavelet based contourlet transform and no lists SPIHT coding is proposed in the paper. Experiment shows that compared to wavelet based scheme the contourlet scheme can reserve the texture of the image. For barbara test image when coding at low bit rate the PSNR can improve about 0.2dB. 2010 IEEE.

a scalable encryption scheme for ccsds image data compression standard 会议论文 OAI收割
2010 IEEE International Conference on Information Theory and Information Security, ICITIS 2010, Beijing, 40878
Mingyu Li; Xiaowei Yi; Hengtai Ma

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收藏 | 浏览/下载：24/0 | 提交时间：2011/03/31

CCSDS image data compression standard ciphertext bitstream end-to-end security low-complexity transparent transcoding near rate-distortion packet header scalable encryption scheme truncation points cryptography data compression image coding transcoding

Study of unequal error protection method based on JPEG2000 for surveyingmapping image (EI CONFERENCE) 会议论文 OAI收割
International Conference on Computer Science and Software Engineering, CSSE 2008, December 12, 2008 - December 14, 2008, Wuhan, Hubei, China
Yao Q.; Cao M.

收藏 | 浏览/下载：159/0 | 提交时间：2013/03/25

On aviation mapping compression image maybe not decode because of wireless transmission interference. UEP(Unequal Error Protection) scheme is put forward about layer and block structure of JPEG2000 image compression method flexibly enhances local reconfigurable image's quality which is in favor of identifier in the region of interest. 2008 IEEE. and realizes three degrees UEP of data block data header image data via various degrees correction-coding under the condition of obstruct naked and shade. BCH RS and Hamming coding are simulated and image decoding success rate and image's quality are analyzed according to different coding and ROI (Region of Interest) in the Gaussian white noise model and rayleigh fading model. Results shows that the method we putted forward roughly improves decoding success rate at the same time almost not increasing bandwidth