检索结果-内蒙古大学图书馆

您好，读者！请登录

内蒙古大学图书馆

首页
概况
党建
资源
服务
科研支持
- 论文收录引用证明
- 科技查新
知识产权
档案馆
帮助

咨询与建议

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

您的常用邮箱：*

您的手机号码：*

问题描述：

当前已输入0个字，您还可以输入200个字

全部搜索
期刊论文
图书
学位论文
标准
纸本馆藏
外文资源发现
数据库导航
超星发现

高级检索

时间限定

出版年份：

文献类型

图书期刊文献学位论文多媒体

馆藏选择

电子馆藏纸本馆藏

核心期刊

全部期刊 SCI 收录期刊 SSCI 收录期刊 EI 收录期刊 CSCD 收录期刊 CSSCI 收录期刊

语言

中文英文

文献类型

期刊文献图书学位论文标准纸本馆藏

帮助

文字说明：

T=题名（书名、题名），A=作者（责任者），K=主题词，P=出版物名称，PU=出版社名称，O=机构（作者单位、学位授予单位、专利申请人），L=中图分类号，C=学科分类号，U=全部字段，Y=年（出版发行年、学位年度、标准发布年）

检索规则说明：

AND代表“并且”；OR代表“或者”；NOT代表“不包含”；(注意必须大写,运算符两边需空一格)

检索范例：

范例一：(K=图书馆学 OR K=情报学) AND A=范并思 AND Y=1982-2016
范例二：P=计算机应用与软件 AND (U=C++ OR U=Basic) NOT K=Visual AND Y=2011-2016

分类表

所选分类

>> <<

限定检索结果

文献类型

1,475 篇 会议
111 篇 期刊文献
3 册 图书
2 篇 专利

馆藏范围

1,590 篇 电子文献
1 种 纸本馆藏

日期分布

学科分类号

1,005 篇 工学
- 413 篇 计算机科学与技术...
- 216 篇 软件工程
- 199 篇 电气工程
- 165 篇 机械工程
- 146 篇 生物医学工程（可授...
- 121 篇 信息与通信工程
- 106 篇 仪器科学与技术
- 101 篇 光学工程
- 73 篇 核科学与技术
- 67 篇 控制科学与工程
- 57 篇 生物工程
- 56 篇 测绘科学与技术
- 53 篇 电子科学与技术（可...
- 20 篇 材料科学与工程（可...
- 19 篇 航空宇航科学与技...
- 14 篇 土木工程
- 13 篇 建筑学
- 13 篇 化学工程与技术
534 篇 理学
- 401 篇 物理学
- 118 篇 数学
- 52 篇 生物学
- 34 篇 统计学（可授理学、...
- 28 篇 系统科学
- 21 篇 化学
- 16 篇 地球物理学
349 篇 医学
- 239 篇 临床医学
- 151 篇 特种医学
- 28 篇 基础医学(可授医学...
53 篇 管理学
- 43 篇 管理科学与工程(可...
22 篇 农学
- 19 篇 作物学
6 篇 教育学
4 篇 法学
4 篇 艺术学
3 篇 经济学
1 篇 文学
1 篇 军事学

主题

646 篇 image reconstruc...
86 篇 three-dimensiona...
79 篇 cameras
63 篇 computed tomogra...
57 篇 tomography
56 篇 positron emissio...
54 篇 reconstruction a...
53 篇 magnetic resonan...
53 篇 image processing
53 篇 image resolution
51 篇 compressed sensi...
51 篇 training
50 篇 surface reconstr...
48 篇 image segmentati...
46 篇 image quality
42 篇 image coding
42 篇 shape
40 篇 detectors
40 篇 solid modeling
36 篇 images

机构

8 篇 washington univ ...
8 篇 univ canterbury ...
8 篇 univ british col...
7 篇 department of ra...
6 篇 dartmouth coll t...
6 篇 los alamos natl ...
6 篇 univ canterbury ...
4 篇 centre for space...
4 篇 univ nevada dept...
4 篇 prism computat s...
4 篇 infn sezione di ...
4 篇 pontificia unive...
4 篇 the barcelona in...
4 篇 department of as...
4 篇 simon fraser uni...
4 篇 univ chicago dep...
4 篇 univ n carolina ...
4 篇 faculty of engin...
4 篇 lawrence livermo...
4 篇 mpi informat saa...

作者

14 篇 wang lihong v.
14 篇 anastasio mark a...
9 篇 g.t. gullberg
8 篇 v. panin
8 篇 millane rp
7 篇 m. conti
7 篇 v.y. panin
7 篇 v. y. panin
7 篇 rueckert daniel
6 篇 jitapunkul s.
6 篇 sossi vesna
6 篇 pistorius stephe...
6 篇 s. jitapunkul
6 篇 g.l. zeng
6 篇 v. sossi
5 篇 berti a.
5 篇 barrio j.a.
5 篇 v. patanavijit
5 篇 asano k.
5 篇 huang chao

语言

1,545 篇 英文
36 篇 其他
10 篇 中文

检索条件"任意字段=Conference on Image Reconstruction from Incomplete Data V"

共 1591 条记录，以下是981-990 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

Reconstructing MR images from under- or unevenly-sampled k-space

Reconstructing MR images from under- or unevenly-sampled k-s...

引用

conference on image reconstruction from incomplete data vI

作者： vu, Linda Hajian, Arsen R. Calamai, Paul H. Cenko, Andrew T. Rasheed, Sarbast Kim, Jae K. Piron, Cameron So, Simon S. Meade, Jeff T. Knuth, Kevin H. Univ Waterloo Dept Syst Design Engn 200 Univ Ave W Waterloo ON N2L 3G1 Canada Thunder Bay Reg Res Inst Thunder Bay ON Canada Sentinelle Med Inc Toronto ON Canada SUNY Albany Albany NY 12222 USA

ISBN: (纸本)9780819482969

In MRI, non-rectilinear sampling trajectories are applied in k-space to enable faster imaging. Traditional image reconstruction methods such as a fast Fourier transform (FFT) can not process datasets sampled in non-rectilinear forms (e. g., radial, spiral, random, etc.) and more advanced algorithms are required. The Fourier reduction of optical interferometer data (FROID) algorithm is a novel image reconstruction method(1-3) proven to be successful in reconstructing spectra from sparsely and unevenly sampled astronomical interferometer data. The framework presented allows a priori information, such as the locations of the sampled points, to be incorporated into the reconstruction of images. In this paper, the FROID algorithm has been adapted and implemented to reconstruct magnetic resonance (MR) images from data acquired in k-space where the sampling positions are known. Also, simulated data, including randomly sampled data, are tested and analyzed.

关键词： Random sampling MRI image reconstruction interpolation Fourier transform least squares fit

来源：评论

学校读者我要写书评

暂无评论

Three-dimensional image visualization by maximum a posteriori estimation photon-counting integral imaging

Three-dimensional image visualization by maximum a posterior...

引用

conference on image reconstruction from incomplete data vI

作者： Do, Cuong Manh Univ Connecticut Dept Elect & Comp Engn Storrs CT 06269 USA

ISBN: (纸本)9780819482969

The author presents the maximum a posteriori (MAP) estimation method to estimate irradiance elemental images and reconstruct 3D images using photon-counting integral imaging. Elemental images are captured using the synthetic aperture integral imaging (SAII) technique. Photon-counting elemental images are generated using the Poisson distribution. The method can reconstruct 3D images more accurately than the one using maximum likelihood (MLE) estimation. This may be important in medical imaging as well as other photon-level applications.

关键词： Integral images photon-counting reconstruction maximum likelihood maximum a posteriori

来源：评论

学校读者我要写书评

暂无评论

The AX-PET concept: New developments and tomographic imaging

The AX-PET concept: New developments and tomographic imaging

引用

IEEE Symposium on Nuclear Science (NSS/MIC)

作者： P. Beltrame E. Bolle A. Braem C. Casella E. Chesi N. Clinthorne R. De Leo G. Dissertori L. Djambazov v. Fanti J. E. Gillam M. Heller C. Joram H. Kagan W. Lustermann F. Meddi E. Nappi F. Nessi-Tedaldi J. F. Oliver F. Pauss D. Renker M. Rafecas A. Rudge U. Ruotsalainen T. Schneider D. Schinzel J. Séguinot P. Solevi S. Stapnes U. Tuna P. Weilhammer PH Department CERN Geneva Switzerland University of Oslo Oslo Norway ETH Zurich Zurich Switzerland Ohio State Uinversity Columbus OH USA University of Michigan Ann Arbor MI USA INFN-Sezione di Bari Bari Italy Universitá e Sezione INFN di Cagliari Italy IFIC CSIC Universidad de Valencia Valencia Spain University of Roma La Sapienza Rome Italy Technical University of München Munchen Germany Tampere University of Technology Tampere Finland

The Axial PET (AX-PET) concept proposes a novel detection geometry for PET, based on layers of long scintillating crystals axially aligned with the bore axis. Arrays of wavelength shifting (WLS) strips are placed orthogonally and underneath the crystal layers; both crystals and strips are individually readout by G-APDs. The axial coordinate is obtained from the WLS signals by means of a Center-of-Gravity method combined with a cluster algorithm. This design allows spatial resolution and sensitivity to be decoupled and thus simultaneously optimized. In this work we present the latest results obtained with the 2-module AX-PET scanner prototype, which consists of 6 radial layers of 8 LYSO crystals each (crystal size: 3 × 3 × 100 mm 3 ). The WLS arrays comprise 26 strips (3-mm wide) per layer. The estimated energy resolution from point-like measurements is 11.8% (FWHM at 511 kev). The intrinsic spatial resolution was measured for the two modules in coincidence at two different configurations using point-like sources, showing very little degradation when the modules were placed oblique to each other. The axial spatial resolution was 1.5 mm (FWHM) in all the studied cases. Tomographic data of extended phantoms filled with fluorine-18 have been acquired. Imaging a larger transaxial Field-of-view (when compared to the previous measurement campaign) was possible thanks to implementing secondary motion of one of the modules. We have also developed various reconstruction approaches which take into account the particular nature of AX-PET data, as well as a count rate model which allowed us to develop an acquisition protocol able to compensate for count losses. The reconstructed phantom images confirm the imaging capabilities of AX-PET, and the recent advancements in the DAQ let us expect significant improvements for future campaigns.

关键词： image resolution image reconstruction

来源：评论

学校读者我要写书评

暂无评论

Understanding stochastic biological macromolecular complexes by estimating a mechanical model via statistical mechanics from cryo electron microscopy images

Understanding stochastic biological macromolecular complexes...

引用

conference on image reconstruction from incomplete data vI

作者： Wang, Kang Doerschuk, Peter C. Cornell Univ Ithaca NY 14853 USA

ISBN: (纸本)9780819482969

Cryo electron microscopy imaging experiments can lead to stochastic models for biological macromolecular complexes. However, interpreting the statistical variability is difficult. In some situations, the variability in the original complexes is due to primarily thermal fluctuations which are snap frozen in place by the preparation of the specimen. In this case the images are images of samples of the equilibrium statistical mechanics ensemble of the complex. Based on representing the complex by a lattice spring-mass mechanical model, an estimation problem for determining the masses and spring constants is described and demonstrated on synthetic data.

关键词： equilibrium statistical mechanics 3-D image understanding cryo electron microscopy virus structure

来源：评论

学校读者我要写书评

暂无评论

Scattered image reconstruction of Pulsar B0834+06

Scattered image reconstruction of Pulsar B0834+06

引用

conference on image reconstruction from incomplete data vI

作者： Gao, J. J. Rickett, B. J. Coles, W. A. Univ Calif San Diego Dept Elect & Comp Engn La Jolla CA 92037 USA

ISBN: (纸本)9780819482969

The scattered radio image of a pulsar, as a result of the radio wave passing through the turbulent interstellar plasma, is a valuable probe of the plasma turbulence. However the scattering angles are so small, typically a few milli-arcsec, that the radio image cannot be resolved even with very long baseline interferometry (vLBI). Recently we ([1]) combined the secondary spectrum([2]) technique with vLBI astrometry to resolve the ambiguities in reconstructing the scattered image of pulsar B0834+06 at 327 MHz with an angular resolution 100 times finer than would have been possible with vLBI alone. However this technique can only reconstruct the outer portion of the image and it does not provide an estimate of the axial ratio of the plasma turbulence. Here we present a significant advancement of the technique which allows reconstruction of the central part of the image in two dimensions, providing an estimate of the axial ratio of the anisotropic turbulence. This technique relies on modeling a peculiar feature of the two dimensional Fourier transform of the dynamic spectrum (the secondary spectrum), called a "reverse arclet". For the 327 MHz observations of B0834+06 the secondary spectrum exhibits many identical reverse arclets. They originate from the interference between offset bright points and the core of the brightness distribution. The technique has also been tested using simulated data that confirms the image reconstruction algorithm.

关键词： ISM Turbulence image reconstruction Pulsar B0834+06 vLBI Parabolic arcs

来源：评论

学校读者我要写书评

暂无评论

Weighted least-squares image reconstruction in phase-contrast tomography

Weighted least-squares image reconstruction in phase-contras...

引用

conference on image reconstruction from incomplete data vI

作者： Huang, Pin-Yu Chou, Cheng-Ying Natl Taiwan Univ Dept Bioind Mechatron Engn Taipei 106 Taiwan

ISBN: (纸本)9780819482969

X-ray phase-contrast tomography (PCT) methods seek to quantitatively reconstruct separate images that depict an object's absorption and refractive properties. Most PCT reconstruction algorithms generally operate by explicitly or implicitly performing the decoupling of the projected absorption and phase properties at each tomographic view angle by use of a phase-retrieval formula, followed by the inversion of X-ray transform. Tomographic reconstruction by use of statistical methods can account for the noise model and a priori information, and thereby can produce images with better quality over conventional filtered backprojection algorithms. We proposed a weighted least-squares method that takes into account the second-order statistical properties of the projected phase images and aims to minimize the objective function by employing a conjugate-gradient (CG) method. A computer-simulation study was carried out to investigate and evaluate the developed method.

关键词： X-ray phase-contrast tomography noise texture weighted least-squares conjugate-gradient

来源：评论

学校读者我要写书评

暂无评论

Prototype testing and algorithm development for the Cosmic Ray Inspection and Passive Tomography (CRIPT) project

Prototype testing and algorithm development for the Cosmic R...

引用

IEEE Symposium on Nuclear Science (NSS/MIC)

作者： v. Anghel J. Armitage J. Botte K. Boudjemline J. Bueno D. Bryman E. Charles T. Cousins P.-L. Drouin A. Erlandson G. Gallant C. Jewett G. Jonkmans Z. Liu S. Noel G. Oakham T.J. Stocki M. Thompson D. Waller Atomic Energy of Canada Limited Chalk River Ontario Canada Department of Physics Carleton University Ottawa Ontario Canada Advanced Annlied Physics Solutions Vancouver British Columbia Canada Canada Border Services Agency Ottawa Ontario Canada Intemational Safety Research Ottawa Ontario Canada Defence Research and Development Canada Ottawa Ontario Canada Health Canada Ottawa ONT Canada Health Canada Ottawa Ontario Canada

The Cosmic Ray Inspection and Passive Tomography (CRIPT) collaboration has completed the testing of small muon detector prototypes and has commenced construction of a 12 layer, 4m 2 prototype muon scattering tomography system. Three areas of CRIPT's progress are reported: (1) results from the testing of one of drift chamber muon detector prototypes; (2) algorithms for muon momentum estimation and tomographic image reconstruction; and (3) the status of the large prototype construction. The intrinsic resolution of the 2.4 m long, 1.2 m wide drift chamber muon detector prototype has been measured to be 1.73 mm perpendicular to the anode wire, and 2.9 mm parallel to the anode. A Bayesian estimator algorithm has been developed for muon momentum estimation. from simulations, the momentum resolution is expected to be highly asymmetric, varying from -18% to +92% integrated across the cosmic ray muon spectrum. A novel Point-of-Closest-Approach (PoCA) algorithm has also been developed for tomographic imaging. Multiple possible muon trajectories are assumed for each muon. The expected completion date for the construction is summer 2012, with first tomographic data following soon afterward.

关键词： Containers Size measurement Chemicals Tomography Biology

来源：评论

学校读者我要写书评

暂无评论

Weighted Total variation Constrained reconstruction for Reduction of Metal Artifact in CT

Weighted Total Variation Constrained Reconstruction for Redu...

引用

IEEE Nuclear Science Symposium (NSS)/Medical Imaging conference (MIC)/17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors

作者： Zhang, Yanbo Mou, Xuanqin Yan, Hao Xi An Jiao Tong Univ Inst Image Proc & Pattern Recognit Xian 710049 Shaanxi Peoples R China

ISBN: (纸本)9781424491063

Tv constrained reconstruction could obtain perfect results from incomplete data, and has been applied to reduce metal artifact by assuming that the projection contaminated by metal is missing. In Tv constrained reconstruction, the selection of a proper step parameter for Tv minimization procedure is a key point. However, this parameter is usually selected empirically, and it is a constant for all pixels in the whole image domain, regardless of the difference of missing projection quantity at different pixels. By analyzing the relationship between the missing projections and pixels position, a Weighted Total variation (WTv) constrained reconstruction method is proposed to reduce metal artifact in this paper. For WTv constrained method, the parameters are no longer the same, but vary over image domain as the introduced information miss rate. The simulation results show that the proposed method is more effective than current Tv constraint to reduce metal artifact. Moreover, WTv constrained method is extended to other incomplete projection problems.

关键词： Pixels

来源：评论

学校读者我要写书评

暂无评论

Multiple image reconstruction for high-resolution optical imaging using structured illumination

Multiple image reconstruction for high-resolution optical im...

引用

conference on image reconstruction from incomplete data vI

作者： Usuki, S. Kudo, R. Takahashi, S. Takamasu, K. Shizuoka Univ Div Global Res Leaders 3-5-1 Johoku Hamamatsu Shizuoka 4328561 Japan Univ Tokyo Dept Precis Engn Tokyo 1138656 Japan

ISBN: (纸本)9780819482969

The resolving power in optical imaging is limited not only by optical diffraction but also by the sampling size, which in turn is determined by the optical magnification and pixel size of the imaging devices such as CCD or CMOS. In order to exceed these limits, we propose a method for improving the optical resolving power by using structured illumination shift and multiple image reconstruction. Theoretical and experimental verifications reveal that the use of structured light illumination together with successive approximation (which provides the extrapolation effect) causes the resolving power of the proposed method to exceed the optical diffraction limit. Furthermore, we focused on subpixel sampling using the structured illumination shift method. Subpixel image processing can improve the resolving power without narrowing the visual field of the imaging optics. In addition, the proposed method can provide subpixel resolving power without necessitating the mechanical displacement of the CCD camera. We investigated the relationship between the CCD pixel size and the resolving power provided by the proposed method. We found that the subpixel spatial shift of the structured illumination not only improves the optical resolving power but also enables sub-pixel sampling for optical imaging.

关键词： optical imaging image reconstruction structured illumination super-resolution

来源：评论

学校读者我要写书评

暂无评论

Graphics Processing Unit restoration of non-uniformly warped images using a typical frame as prototype

Graphics Processing Unit restoration of non-uniformly warped...

引用

conference on image reconstruction from incomplete data vI

作者： Tahtali, Murat Lambert, Andrew J. Fraser, Donald Univ New S Wales Australian Def Force Acad Sch Engn & Informat Technol Canberra ACT 2600 Australia

ISBN: (纸本)9780819482969

When imaging through the atmosphere, the resulting image contains not only the desired scene, but also the adverse effects of all the turbulent air mass between the camera and the scene. These effects are viewed as a combination of non-uniform blurring and random shifting of each point in the received short-exposure image. Corrections for both aspects of this combined distortion have been tackled reasonably successfully by previous efforts. We presented in an earlier paper a more robust method of restoring the geometry by redefining the place of the prototype frame and by reducing the adverse effect of averaging in the processing sequence. We present here a variant of this method using a Minimum Sum of Squared Differences (MSSD) cross-correlation registration algorithm implemented on a Graphics Processing Unit (GPU). The raw speed-up achieved using GPU code is in the order of x1000. Two orders of magnitude speed-up on the complete algorithm will allow for better fine tuning of this method and for experimentation with various registration algorithms.

关键词： image registration shiftmaps atmospheric warp image restoration GPU computing CUDA

来源：评论

学校读者我要写书评

暂无评论

没有更多数据了...

全选清除本页清除全部题录导出标记到“检索档案”

共160页 << < 95 96 97 98 99 100 101 102 103 104 > >>

检索报告对象比较合并检索0

隐藏清空

合并搜索

回到顶部

执行限定条件

内容：

评分：

请选择保存的检索档案：

请选择收藏分类：

订阅名称：

通借通还

温馨提示：

图书名称：

借书校区：

取书校区：

手机号码：

邮箱地址：

一卡通帐号：

电话和邮箱必须正确填写，我们会与您联系确认。

联系人：

所在院系：

联系邮箱：

联系电话：

内蒙古自治区呼和浩特市赛罕区大学西街235号邮编: 010021

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：