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中国科学院大学电子电气与通信工程学院,北京 101408
[ "鄢懿(1990-),女,江西景德镇人,中国科学院大学博士生,主要研究方向为联合信源信道与安全编译码。" ]
[ "凃国防(1954-),男,湖南长沙人,中国科学院大学教授、博士生导师,主要研究方向为联合信源信道编译码、无线通信、图像编码、信息安全和信号处理。" ]
[ "张灿(1954-),女,湖南长沙人,中国科学院大学教授、博士生导师,主要研究方向为移动无线通信、无线网络安全和信号处理。" ]
[ "高绍帅(1976-),男,山东德州人,博士,中国科学院大学教授、博士生导师,主要研究方向为无线通信、视频处理。" ]
[ "陈德元(1968-),男,贵州毕节人,博士,中国科学院大学副教授,主要研究方向为信道编码、联合信源信道编码。" ]
网络出版日期:2018-02,
纸质出版日期:2018-02-25
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鄢懿, 凃国防, 张灿, 等. 基于混沌冗余和阈值控制的联合算术码双向编译码快速算法[J]. 通信学报, 2018,39(2):105-113.
Yi YAN, Guofang TU, Can ZHANG, et al. Fast bidirectionally-decodable arithmetic coding with chaotic redundancy and threshold control[J]. Journal on communications, 2018, 39(2): 105-113.
鄢懿, 凃国防, 张灿, 等. 基于混沌冗余和阈值控制的联合算术码双向编译码快速算法[J]. 通信学报, 2018,39(2):105-113. DOI: 10.11959/j.issn.1000-436x.2018029.
Yi YAN, Guofang TU, Can ZHANG, et al. Fast bidirectionally-decodable arithmetic coding with chaotic redundancy and threshold control[J]. Journal on communications, 2018, 39(2): 105-113. DOI: 10.11959/j.issn.1000-436x.2018029.
JPEG2000 是一种具有高效压缩性能的图像压缩标准,但抗差错能力和安全性不能满足实际应用要求。基于此,提出一种基于混沌冗余和阈值控制的联合算术码双向编译码快速算法,在编码端保留多个冗余符号,用混沌系统控制冗余符号的比例增强算术码编码的安全性;在译码端采用阈值控制和双向译码相结合,实现基于最大后验概率的联合快速译码。仿真结果表明,所提算法相对现有算法改善了重建图像质量,同时降低译码复杂度,具有良好的抗差错性和安全性。
Although the JPEG2000 compression standard has high coding efficiency
its error resistance and security can’t meet the requirements of practical application.Based on this
a fast bidirectionally-decodable arithmetic coding method with chaotic redundancy and threshold control was proposed.At the encoder
the chaotic map controlled the probabilities of multiple redundant symbols to enhance the security of arithmetic coding.At the decoder
threshold control and bidirectional decoding were combined to realize fast decoding based on maximum a posteriori estimation.Simulation results show that the proposed method improves the reconstructed image quality with better error resistance and security.
ISO/IEC 15444-1.Information technology-JPEG2000 image coding system-part 1:core coding system [S ] . 2000 .
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鄢懿 , 张灿 , 郭振永 , 等 . 基于混沌密钥控制的联合信源信道与安全算术码编译码算法 [J ] . 电子与信息学报 , 2016 , 38 ( 10 ): 2553 - 2559 .
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邓晓衡 , 廖春龙 , 朱从旭 , 等 . 像素位置与比特双重置乱的图像混沌加密算法 [J ] . 通信学报 , 2014 , 35 ( 3 ): 216 - 223 .
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