中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Breaking the hardness assumption and IND-CPA security of HQC submitted to NIST PQC project 期刊论文  OAI收割
IET INFORMATION SECURITY, 2020, 卷号: 14, 期号: 3, 页码: 313-320
作者:  
Liu, Zhen;  Pan, Yanbin;  Xie, Tianyuan
  |  收藏  |  浏览/下载:46/0  |  提交时间:2020/10/12
A Decoding Scheme for Incomplete Motor Imagery EEG With Deep Belief Network 期刊论文  OAI收割
FRONTIERS IN NEUROSCIENCE, 2018, 卷号: 12, 页码: 17
作者:  
Chu, Yaqi;  Zhao, Xingang;  Zou, Yijun;  Xu, Weiliang;  Han, Jianda
  |  收藏  |  浏览/下载:28/0  |  提交时间:2021/02/02
A Decoding Scheme for Incomplete Motor Imagery EEG With Deep Belief Network 期刊论文  OAI收割
FRONTIERS IN NEUROSCIENCE, 2018, 卷号: 12, 页码: 17
作者:  
Chu, Yaqi;  Zhao, Xingang;  Zou, Yijun;  Xu, Weiliang;  Han, Jianda
  |  收藏  |  浏览/下载:35/0  |  提交时间:2021/02/02
A Decoding Scheme for Incomplete Motor Imagery EEG With Deep Belief Network 期刊论文  OAI收割
FRONTIERS IN NEUROSCIENCE, 2018, 卷号: 12, 页码: 1-17
作者:  
Zou YJ(邹宜君);  Zhao XG(赵新刚);  Zhao YW(赵忆文);  Xu WL(徐卫良);  Han JD(韩建达)
  |  收藏  |  浏览/下载:39/0  |  提交时间:2018/10/22
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:165/0  |  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  
Lossless wavelet compression on medical image (EI CONFERENCE) 会议论文  OAI收割
4th International Conference on Photonics and Imaging in Biology and Medicine, September 3, 2005 - September 6, 2005, Tianjin, China
作者:  
Liu H.;  Liu H.;  Liu H.
收藏  |  浏览/下载:42/0  |  提交时间:2013/03/25
An increasing number of medical imagery is created directly in digital form. Such as Clinical image Archiving and Communication Systems (PACS). as well as telemedicine networks require the storage and transmission of this huge amount of medical image data. Efficient compression of these data is crucial. Several lossless and lossy techniques for the compression of the data have been proposed. Lossless techniques allow exact reconstruction of the original imagery while lossy techniques aim to achieve high compression ratios by allowing some acceptable degradation in the image. Lossless compression does not degrade the image  thus facilitating accurate diagnosis  of course at the expense of higher bit rates  i.e. lower compression ratios. Various methods both for lossy (irreversible) and lossless (reversible) image compression are proposed in the literature. The recent advances in the lossy compression techniques include different methods such as vector quantization  wavelet coding  neural networks  and fractal coding. Although these methods can achieve high compression ratios (of the order 50:1  or even more)  they do not allow reconstructing exactly the original version of the input data. Lossless compression techniques permit the perfect reconstruction of the original image  but the achievable compression ratios are only of the order 2:1  up to 4:1. In our paper  we use a kind of lifting scheme to generate truly loss-less non-linear integer-to-integer wavelet transforms. At the same time  we exploit the coding algorithm producing an embedded code has the property that the bits in the bit stream are generated in order of importance  so that all the low rate codes are included at the beginning of the bit stream. Typically  the encoding process stops when the target bit rate is met. Similarly  the decoder can interrupt the decoding process at any point in the bil stream  and still reconstruct the image. Therefore  a compression scheme generating an embedded code can start sending over the network the coarser version of the image first  and continues with the progressive transmission of the refinement details. Experimental results show that our method can get a perfect performance in compression ratio and reconstructive image.