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

559 篇 会议
2 篇 期刊文献

馆藏范围

561 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

521 篇 工学
- 483 篇 仪器科学与技术
- 71 篇 生物医学工程（可授...
- 18 篇 计算机科学与技术...
- 16 篇 软件工程
- 12 篇 光学工程
- 5 篇 电气工程
- 5 篇 生物工程
- 4 篇 材料科学与工程（可...
- 3 篇 信息与通信工程
- 2 篇 机械工程
- 2 篇 电子科学与技术（可...
- 1 篇 测绘科学与技术
451 篇 理学
- 446 篇 物理学
- 23 篇 化学
- 19 篇 生物学
- 5 篇 数学
- 1 篇 统计学（可授理学、...
219 篇 医学
- 181 篇 临床医学
- 39 篇 特种医学
- 2 篇 医学技术（可授医学...
- 1 篇 基础医学(可授医学...
- 1 篇 药学(可授医学、理...
1 篇 农学
- 1 篇 作物学
1 篇 管理学
- 1 篇 图书情报与档案管...

主题

111 篇 microscopy
67 篇 confocal microsc...
45 篇 fluorescence mic...
37 篇 image processing
28 篇 three-dimensiona...
26 篇 optical coherenc...
21 篇 3d image process...
20 篇 quantitative pha...
18 篇 confocal
17 篇 deconvolution
17 篇 microscopes
17 篇 adaptive optics
16 篇 super-resolution
16 篇 3d microscopy
16 篇 fluorescence
16 篇 interference mic...
15 篇 digital holograp...
14 篇 digital holograp...
14 篇 optical microsco...
13 篇 phase imaging

机构

20 篇 univ memphis dep...
11 篇 northeastern uni...
8 篇 univ valencia de...
8 篇 univ rochester i...
7 篇 texas a&m univ d...
6 篇 univ s alabama p...
6 篇 northeastern uni...
6 篇 johns hopkins un...
6 篇 univ oxford dept...
6 篇 univ s alabama c...
5 篇 univ texas dalla...
5 篇 univ dublin trin...
5 篇 univ s florida d...
5 篇 univ colorado de...
5 篇 univ s alabama c...
4 篇 univ georgia col...
4 篇 washington univ.
4 篇 univ oxford dept...
4 篇 4d technol corp ...
4 篇 univ colorado de...

作者

21 篇 dimarzio charles...
20 篇 preza chrysanthe
10 篇 ward e. sally
10 篇 ober raimund j.
9 篇 rajadhyaksha mil...
9 篇 king sharon v.
8 篇 cogswell carol j...
8 篇 conchello ja
7 篇 mccabe em
7 篇 wilson t
7 篇 chao jerry
7 篇 ram sripad
7 篇 shaked natan t.
6 篇 kang jin u.
6 篇 brown thomas g.
6 篇 rich thomas c.
6 篇 doblas ana
6 篇 kemper bjoern
6 篇 warger william c...
6 篇 depeursinge chri...

语言

561 篇 英文

检索条件"任意字段=Conference on 3-Dimensional and Multidimensional Microscopy - Image Acquisition and Processing XII"

共 561 条记录，以下是181-190 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：

Comparison of computational methods developed to address depth-variant imaging in fluorescence microscopy

Comparison of computational methods developed to address dep...

引用

conference on Three-dimensional and multidimensional microscopy - image acquisition and processing XX

作者： Rahman, Muhammad Mizanur Schaefer, Lutz H. Schuster, Dietwald Preza, Chrysanthe Univ Memphis Dept Elect & Comp Engn Memphis TN 38152 USA Adv Imaging Mathodol Consultat Ontario ON Canada Univ Appl Sci Dept Math Regensburg Germany

ISBN: (纸本)9780819493583

In three-dimensional microscopy, the image formation process is inherently depth variant (DV) due to the refractive index mismatch between the imaging layers. In this study, we present a quantitative comparison among different image restoration techniques developed based on a depth-variant (DV) imaging model for fluorescence microscopy. The imaging models employed by these methods approximate DV imaging by either stratifying the object space (analogous to the discrete Fourier transform (DFT) "overlap-add" method) or image space (analogous to the DFT "overlap-save" method). We compare DV implementations based on maximum likelihood (ML) estimation and a previously developed expectation maximization algorithm to a ML conjugate gradient algorithm, using both these stratification approaches in order to assess their impact on the restoration methods. Simulations show that better restoration results are achieved with iterative methods implemented using the overlap-add method than with their implementation using the overlap-save method. However, the overlap-save method makes it possible to implement a non-iterative DV inverse filter that can trade off accuracy of the achieved result for computational speed. Results from a non-iterative regularized inverse filtering approach are also presented.

关键词： Depth-variant imaging 3D fluorescence microscopy spherical aberration image de-blurring

来源：评论

学校读者我要写书评

暂无评论

Development of micro-optical projection tomography for 3D analysis of single cells

Development of micro-optical projection tomography for 3D an...

引用

conference on 3-dimensional and multidimensional microscopy - image acquisition and processing XI

作者： Fauver, M Seibel, EJ Rahn, JR Patten, FW Nelson, AC Univ Washington Coll Engn Human Interface Technol Lab Seattle WA 98195 USA

ISBN: (纸本)0819452327

The Micro-Optical Projection Tomographic Microscope (muOPTM) is an instrument that is being developed for three-dimensional (3D) imaging of cells and subcellular components. The target application for the muOPTM is the early detection of lung cancer by revealing the complex 3D information about chromatin redistribution in the nucleus. The muOPTM employs a scanning objective lens (100x, N.A.=1.25) to create an extended depth-of-field image, similar to a shadowgram or projection, that we call a pseudo-projection. A large number of pseudoprojections (90+) are acquired, from which a tomographically reconstructed 3D image is computed using a filtered backprojection algorithm. The prototype muOPTM uses a single objective lens, so the object (cell) must be rotated for each new pseudo-projection. A custom microtube stage minimizes the lateral and axial motion of the sample tube during scanning and rotation so that registration between successive pseudo-projections is maintained. image processing methods are used to correct any remaining registration errors. The media inside and outside the tube are refractive index-matched to each other and to the tube (Deltan(avg) < 0.02). The index-matched materials are pressed between two flat parallel windows, providing a nearly distortion-free image. Custom phantoms using microspheres have been constructed and images of these 3D test targets acquired. The minimum resolvable feature size is better than 3 microns. The first 3D image of a cell using muOPTM is also shown.

关键词： optical tomography optical projection tomography three-dimensional imaging computed tomography microscopy depth of field cancer screening

来源：评论

学校读者我要写书评

暂无评论

Effects of a pupil filter on stimulated emission depletion microscopy

Effects of a pupil filter on stimulated emission depletion m...

引用

conference on Three-dimensional and multidimensional microscopy - image acquisition and processing xiiI

作者： Yoo, Hongki Song, Incheon Kim, Taehoon Gweon, Daegab Korea Adv Inst Sci & Technol Dept Mech Engn Lab Nano Optomechatron Taejon 305701 South Korea Hanyang Univ Dept Biomed Engn Hanyang Peoples R China

ISBN: (纸本)0819461326

Recently, stimulated emission depletion microscopy has achieved high resolution in fluorescent imaging. In this paper, we present effects of a pupil filter on the performances of stimulated emission depletion microscopy. In stimulated emission depletion microscopy, a saturated zero-centered spot is usually used to achieve a high lateral resolution. Using a half-coated phase plate, a zero-centered spot was made with a narrow and steep gap at the center. Numerical and experimental results show that by simply inserting a central obstacle as a pupil filter, it is possible to reduce the central gap of the zero-centered spot. However in order to compensate inevitable loss of light, which is blocked by the obstacle, increased laser power is required.

关键词： STED microscopy confocal microscopy high resolution pupil filter phase plate annular aperture

来源：评论

学校读者我要写书评

暂无评论

Photobleaching Property of Confocal Laser Scanning microscopy with Masked Illumination

Photobleaching Property of Confocal Laser Scanning Microscop...

引用

conference on Three-dimensional and multidimensional microscopy - image acquisition and processing XVII

作者： Kim, DongUk Moon, Sucbei Song, Hoseong Yang, Wenzhong Kim, Dug Y. Gwangju Inst Sci & Technol Dept Informat & Commun Kwangju 500712 South Korea

ISBN: (纸本)9780819479662

Confocal laser scanning microscopy (CLSM) has become the tool of choice for high-contrast fluorescence imaging in the study of the three-dimensional and dynamic properties of biological system. However, the high cost and complexity of commercial CLSMs urges many researchers to individually develop low cost and flexible confocal microscopy systems. The high speed scanner is an influential factor in terms of cost and system complexity. Resonant galvo scanners at several kHz have been commonly used in custom-built CLSMs. However, during the repeated illumination for live cell imaging or 3D image formation, photobleaching and image distortion occurred at the edges of the scan field may be more serious than the center due to an inherent property (e. g. sinusoidal angular velocity) of the scan mirror. Usually, no data is acquired at the edges due to large image distortion but the excitation beam is still illuminated. Here, we present the photobleaching property of CLSM with masked illumination, a simple and low cost method, to exclude the unintended excitation illumination at the edges. The mask with a square hole in its center is disposed at the image plane between the scan lens and the tube lens in order to decrease photobleaching and image distortion at the edges. The excluded illumination section is used as the black level of the detected signals for a signal quantizing step. Finally, we demonstrated the reduced photobleaching at the edges on a single layer of fluorescent beads and real-time image acquisition without a standard composite video signal by using a frame grabber.

关键词： Photobleaching confocal laser scanning microscopy video-rate 3D image masked illumination

来源：评论

学校读者我要写书评

暂无评论

Super-resolution optical microscopy by using dielectric microwires 13

Super-resolution optical microscopy by using dielectric micr...

引用

conference on Three-dimensional and multidimensional microscopy - image acquisition and processing XxiiI

作者： Darafsheh, Arash Wu, Gaoxiang Yang, Shu Finlay, Jarod C. Univ Penn Dept Radiat Oncol Philadelphia PA 19104 USA Univ Penn Dept Mat Sci & Engn 3231 Walnut St Philadelphia PA 19104 USA

ISBN: (纸本)9781628419474

We demonstrate that super-resolution imaging of specimens containing sub-diffraction-limited features is feasible by using dielectric microwires fabricated through capillary force lithography followed by photopatterning. As supplementary micron scale cylindrical lenses, we fabricated uniform-sized microwires with and 5 and 10 mu m diameters and refractive index similar to 1.3-1.6. The microwires are placed in contact with the specimen to collect the information of the sub-wavelength features of the specimen and transmit them to the far-field with magnification enabling imaging with two-fold resolution improvement. Potential applications of our imaging technique include biological imaging, microfluidics, and nanophotonics applications.

关键词： Super-resolution microscopy nanoscopy microwire

来源：评论

学校读者我要写书评

暂无评论

Three-dimensional quantitative phase imaging: Current and future perspectives

Three-dimensional quantitative phase imaging: Current and fu...

引用

conference on Three-dimensional and multidimensional microscopy - image acquisition and processing XV

作者： Dragomir, Nicoleta M. Goh, Xiao Ming Roberts, Ann Univ Melbourne Sch Phys Melbourne Vic Australia

ISBN: (纸本)9780819470362

Great effort has been made in the recent past to develop new non-destructive imaging modalities for both two and three dimensional objects, based on the phase properties of a specimen. Quantitative phase tomography (QPT) is a hybrid technique that has been proposed to provide three-dimensional (3D) refractive index (RI) profiling of irregular phase objects by combining transverse phase measurements with traditional tomographic reconstruction techniques. This profiling is accomplished through measurements of sets of projections which are ultimately related to the RI values of the object's transverse cross-section. This is particularly useful for 3D refractive index determination of specimens where staining is not appropriate or for materials that cannot be stained and is essential to many applications in photonics and biotechnology. This article reviews recent developments in quantitative phase tomography as they are presently available and suggests future applications based on current research on the 3D RI. The enabling elements for 3D QPT in the context of four key areas are discussed: the effect of the refractive index of the surrounding matching fluid, spatial resolution, phase accuracy and optimal defocus. Recent progress and future perspectives related to each of these areas is presented with regard to various test objects of known optical properties.

关键词： phase imaging refractive index tomography three-dimensional microscopy

来源：评论

学校读者我要写书评

暂无评论

Data correction methods for 3D light microscopy

引用

conference on 3-dimensional and multidimensional microscopy - image acquisition and processing V

作者： Wang, CL O'Connor, NJ Wang, M Turner, JN Holmes, TJ AutoQuant Imaging Inc Watervliet NY 12189 USA

ISBN: (纸本)0819427004

A cooled or video-rate CCD camera is often used to collect optical slices from many modalities of microscopy including widefield-fluorescence (WF) and transmitted-light brightfield (TLB). Raw optical slices collected from both of these types of cameras are contaminated by imperfect performance of the CCD camera. Optical slice image data must be corrected for the bias level and nonuniformity in the photometric response of CCD elements (flatfield). Fluctuation of the exposure time in a cooled CCD camera needs to be calibrated as well. Bad pixels due to the severely low sensitivity of some of the CCD elements often occur and otherwise impair the conventional schemes of correction and calibration. An adaptive median filter has been introduced by us previously to treat these bad pixels. In this study a Wiener-type regularization scheme is proposed as robust, fast, and practical alternative treatment of these bad pixels. One advantage of using this scheme is that doing so provides a nicely modularized design of the computer algorithm. As such, the correction scheme is software readily integrated as a software component in a three-dimensional (3D) microscopy system and may operate independently without affecting the design of other software components in the system.

关键词： data correction 3D light microscopy adaptive median filter Wiener-type regularization

来源：评论

学校读者我要写书评

暂无评论

Simulating structured-illumination microscopy in the presence of spherical aberrations

Simulating structured-illumination microscopy in the presenc...

引用

conference on Three-dimensional and multidimensional microscopy - image acquisition and processing XVIII

作者： Preza, Chrysanthe Univ Memphis Computat Imaging Res Lab Dept Elect & Comp Engn Memphis TN 38152 USA

ISBN: (纸本)9780819484413

The effect of depth-induced spherical aberrations (SA) on structured illumination microscopy (SIM)(1) is investigated. SIM is a technique used in three-dimensional (3D) fluorescence microscopy to improve resolution in optical sections acquired from 3D specimens. A 3D depth-variant imaging model was developed to predict the intermediate SIM or grid images that are used by the SIM approach to compute improved optical sections. The model incorporates SA due to imaging depth within a sample when there is a refractive index (RI) mismatch between the average RI of the specimen and the RI of the immersion medium of the lens. The model was implemented using a stratum-based model approximation and multiple depth-variant point-spread functions (PSFs)(2). SIM optical sections were computed using the subtraction algorithm(1, 3) and simulated grid images that include SA predicted by our model. Simulations were performed for different imaging conditions by varying the grid frequency, the amount of SA and the level of noise added to the grid images. Simulated results demonstrate that SIM images are less accurate in the presence of SA, and confirm that the SIM approach is very sensitive to system noise resulting in a reduced SNR in the optically sectioned images.

关键词： Structured illumination microscopy optical sectioning microscopy 3D fluorescence microscopy spherical aberrations depth-variant imaging depth-variant point spread functions

来源：评论

学校读者我要写书评

暂无评论

Improved image-forming optics for transmission optical projection tomography

Improved image-forming optics for transmission optical proje...

引用

conference on Three-dimensional and multidimensional microscopy - image acquisition and processing XIV

作者： Wang, Yi Wang, Ruikang Oregon Hlth & Sci Univ Dept Biomed Engn Beaverton OR 97006 USA Foshan Univ Dept Photoelect & Phys Foshan 528000 Peoples R China

ISBN: (纸本)9780819465566

We demonstrate an improved image-forming optics for transmission optical projection tomography (TOPT), with which the parallel integral throughout an object can be obtained. This is performed by introducing a shutter with an appropriate diameter at the back focus of the objective lens. We evaluate and compare the performances of the improved and the conventional TOPT systems with different parameters to obtain the optimal configuration. The optimal reconstruction is achieved by the improved configuration with alpha = 0.8 degrees similar to 1.6 degrees, and the spatial resolution reaches 25 mu n. The optimal configuration is validated by TOPT of a phantom sample and a five days chick embryo.

关键词： optical projection tomography point spread function parallel integral

来源：评论

学校读者我要写书评

暂无评论

Detecting jaundice by using digital image processing

Detecting jaundice by using digital image processing

引用

conference on Three-dimensional and multidimensional microscopy - image acquisition and processing XXI

作者： Castro-Ramos, J. Toxqui-Quitl, C. Villa Manriquez, F. Orozco-Guillen, E. Padilla-Vivanco, A. Sanchez-Escobar, J. J. Inst Nacl Astrofis Opt & Electr Puebla Mexico Univ Politecn Tulancingo Tulancingo Mexico Univ Politecn Sinaloa Mazatlan Mexico Ctr Ensenanza Tecn Ind Guadalajara Jalisco Mexico

ISBN: (纸本)9780819498625

When strong Jaundice is presented, babies or adults should be subject to clinical exam like "serum bilirubin" which can cause traumas in patients. Often jaundice is presented in liver disease such as hepatitis or liver cancer. In order to avoid additional traumas we propose to detect jaundice (icterus) in newborns or adults by using a not pain method. By acquiring digital images in color, in palm, soles and forehead, we analyze RGB attributes and diffuse reflectance spectra as the parameter to characterize patients with either jaundice or not, and we correlate that parameters with the level of bilirubin. By applying support vector machine we distinguish between healthy and sick patients.

关键词： Digital image processing Diffuse Reflectance Bilirubin Support Vector Machine

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57页 << < 15 16 17 18 19 20 21 22 23 24 > >>

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：