中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页
机构
成果
学者
登录
注册
登陆
×
验证码:
换一张
忘记密码?
记住我
×
校外用户登录
CAS IR Grid
机构
物理研究所 [2]
软件研究所 [2]
长春光学精密机械与物... [1]
自动化研究所 [1]
采集方式
OAI收割 [6]
内容类型
期刊论文 [4]
会议论文 [2]
发表日期
2010 [2]
2008 [1]
2007 [1]
2006 [2]
学科主题
Computer S... [1]
筛选
浏览/检索结果:
共6条,第1-6条
帮助
条数/页:
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
排序方式:
请选择
题名升序
题名降序
提交时间升序
提交时间降序
作者升序
作者降序
发表日期升序
发表日期降序
Direct methods beyond small-molecule crystallography
期刊论文
OAI收割
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2010, 卷号: 207, 期号: 12, 页码: 2621
Fan, HF
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2013/09/17
RESOLUTION ELECTRON-MICROSCOPY
ANOMALOUS SCATTERING DATA
SINGLE ISOMORPHOUS REPLACEMENT
COMBINING DIRECT-METHODS
INCOMMENSURATE MODULATED STRUCTURES
X-RAY-ANALYSIS
JOINT PROBABILITY-DISTRIBUTION
CRYSTAL-STRUCTURE SOLUTION
PHASE DETERMINATION
STRUCTURE REFINEMENT
efficient monitoring of skyline queries over distributed data streams
期刊论文
OAI收割
KNOWLEDGE AND INFORMATION SYSTEMS, 2010, 卷号: 25, 期号: 3, 页码: 575-606
Sun Shengli
;
Huang Zhenghua
;
Zhong Hao
;
Dai Dongbo
;
Liu Hongbin
;
Li Jinjiu
  |  
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2011/05/23
Distributed data streams
Skyline
Communication-optimal processing
Progressive refinement
一种改进的数据求精证明规则
期刊论文
OAI收割
计算机工程, 2008, 卷号: 34, 期号: 1, 页码: 23-25
张宏
;
贺也平
;
石志国
  |  
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2010/08/23
多级安全系统
数据求精
前向模拟
后向模拟 multilevel secure system
data refinement
forward simulation
backward simulation
Image Annotation Refinement using NSC-Based Word Correlation
会议论文
OAI收割
Beijing, China, July 2-5, 2007
作者:
Jing Liu
;
Mingjing Li
;
Qingshan Liu
;
Hanqing Lu
;
Songde Ma
  |  
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2017/02/20
Internet
Graph Theory
Image Retrieval
Corel Dataset
Nsc-based Word Correlation
Automatic Image Annotation
Candidate Annotations
Image Annotation Refinement
Nearest Spanning Chains
Synonymy Relationship
Untagged Image
Word Co-occurrence Information
Word Correlation Estimation
Word-based Graph
Asia
Automation
Data Mining
Explosions
Information Retrieval
Internet
Organizing
Statistical Distributions
Thesauri
Training Data
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:38/0
  |  
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.
SAD phasing by OASIS-2004: case studies of dual-space fragment extension
期刊论文
OAI收割
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY, 2006, 卷号: 62, 页码: 883
Yao, DQ
;
Huang, S
;
Wang, JW
;
Gu, YX
;
Zheng, CD
;
Fan, HF
;
Watanabe, N
;
Tanaka, I
收藏
  |  
浏览/下载:30/0
  |  
提交时间:2013/09/24
ANOMALOUS SCATTERING DATA
CHROMIUM RADIATION
PROTEIN
REFINEMENT
COMBINATION
RESOLUTION