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

1,464 篇 会议
113 篇 期刊文献
3 册 图书
2 篇 专利

馆藏范围

1,581 篇 电子文献
1 种 纸本馆藏

日期分布

学科分类号

997 篇 工学
- 409 篇 计算机科学与技术...
- 213 篇 软件工程
- 201 篇 电气工程
- 166 篇 机械工程
- 143 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
- 97 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
- 54 篇 电子科学与技术（可...
- 19 篇 材料科学与工程（可...
- 19 篇 航空宇航科学与技...
- 13 篇 土木工程
- 13 篇 化学工程与技术
533 篇 理学
- 401 篇 物理学
- 117 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
- 12 篇 天文学
347 篇 医学
- 240 篇 临床医学
- 150 篇 特种医学
- 26 篇 基础医学(可授医学...
54 篇 管理学
- 44 篇 管理科学与工程(可...
21 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...
80 篇 cameras
63 篇 computed tomogra...
57 篇 tomography
57 篇 positron emissio...
55 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 shape
40 篇 image coding
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 celler a
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 harrop r
5 篇 v. patanavijit

语言

1,542 篇 英文
30 篇 其他
10 篇 中文

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

共 1582 条记录，以下是1471-1480 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：

Use of the Fisher Information Matrix to Optimize the Acquisition Protocol for a D-SPECT System

Use of the Fisher Information Matrix to Optimize the Acquisi...

引用

IEEE Nuclear Science Symposium and Medical Imaging conference

作者： Niccolo Fuin Stefano Pedemonte Simon Arridge Sebastien Ourselin Brian F Hutton Institute of Nuclear Medicine University College London Hospitals London NW1 2BU United Kingdom. S.Pedemonte S.Arridge S.Ourselin are with the Center for Medical Image Computing University College London London NW1 9EE United Kingdom.

ISBN: (纸本)9781467320283

The design of the D-SPECT system is based on compact CZT solid state detectors units that permit movements that would not be achievable with conventional gamma cameras. This new design permits to overcome some inherent SPECT limitations allowing for a region-centric acquisition. By choosing to spend more time directing the detector heads towards a region of interest (ROI), one can allocate more time to collect data from this region at the expense of collecting fewer data from less important regions. However, changing the detector angular movements allowing for a non uniform scanning pattern, the interdependence in the information changes and the D-SPECT system response may be highly shift-variant. In order to be able to compare a set of candidate scanning patterns (for a given activity distribution) a method is needed, that quantifies the information gain. The Fisher Information Matrix (FIM) formalism can be employed to characterise the uncertainty of the reconstruction. Unfortunately, computing, storing and inverting the FIM is not feasible with a 3D imaging system. To tackle this problem we introduce a new approximated expression that relies on a subsampled version of the FIM. This formulation reduces the the computational complexity in inverting the FIM but nevertheless accounts for the global interdependence between the variables. In this paper we adopt this novel algorithm, to investigate the effect of the presence of activity outside the ROI, in determining the optimal D-SPECT acquisition protocol. We perform a set of experiments to determine the optimal scanning pattern for different levels of background. If the activity in the ROI is significantly high with respect to the activity in the background, an acquisition protocol that spends more time acquiring data from the ROI is preferable. Whereas for high levels of activity in the background, an acquisition that scans uniformly the whole field of view may give better results in terms of reconstructed image qua

关键词： reconstruction image Quality Fisher Information D-SPECT Emission Tomography System Design

来源：评论

学校读者我要写书评

暂无评论

Automated detection of mismatch in paired v/Q SPECT scans using voxelwise statistical testing: validation and pilot clinical study

Automated detection of mismatch in paired V/Q SPECT scans us...

引用

IEEE Symposium on Nuclear Science (NSS/MIC)

作者： A. Kalemis D.L. Bailey A. Sardo P. Chicco M.A. Flower R.J. Ott Joint Department of Physics Institute of Cancer Research and Royal Marsden Hospital Sutton Surrey UK Nuclear Medicine Department Royal North Shore Hospital Sydney Australia OIRM S. Anna Hospital Turin Italy Biomedical Engineering Department Royal North Shore Hospital Sydney Australia

v/Q (ventilation/Perfusion) tests are used to diagnose pulmonary emboli predominantly using planar images. This study presents a quantitative, objective statistical analysis of SPECT v/Q scans for the detection of ventilation-perfusion mismatch. The method is based on a voxelwise statistical assessment of the v/Q images differences. A new acquisition protocol (externally triggered gating) is introduced for acquiring multiple frames for the voxelwise variance estimation. The v/Q data sets are then tested by applying a student's t-test in a voxelwise fashion seeking areas of mismatch. The resulting probability image is finally thresholded to display the detected differences. Two different datasets were used: 72 different cases of a computerised model of pulmonary embolism with emboli of varying magnitude and in different segments, plus seven clinical cases with physicians' reports. The method was shown to be robust irrespective of the location of the mismatch for large defects but greater count densities than those used in the simulation studies are needed for the detection of smaller defects. The results from the clinical datasets agree with the clinical reports but in some cases reveal unreported abnormalities.

关键词： Statistical analysis Lungs Protocols Testing Hospitals ventilation image segmentation Australia image reconstruction Probability

来源：评论

学校读者我要写书评

暂无评论

Lens Distortion Self-Calibration Using the Hough Transform

Lens Distortion Self-Calibration Using the Hough Transform

引用

IEEE International conference on Field-Programmable Technology (FPT)

作者： Donald Bailey Yuan Chang Steven Le Moan School of Engineering and Advanced Technology Massey University Palmerston North New Zealand

ISBN: (纸本)9781728102153

The Hough transform is a well known technique for detecting straight lines within images, especially in the presence of noise, or where there is incomplete data (gaps or occlusions). When subjected to lens distortion, straight lines become curved, and indeed this can be used to identify and correct lens distortion. However, curved lines distort and blur the peaks within the Hough transform, making the lines more difficult to detect. However, by analysing the distortion within the Hough transform, it is possible to directly estimate the lens distortion parameters enabling the distortion to be corrected in real time. The proposed technique uses a Terasic DE1-SoC FPGA board (Cyclone v FPGA) to fit a parabola to the distorted peak using Hough's original transform, and from the parabola coefficients directly estimates the lens distortion parameter. This enables the following frame to be corrected in parallel with curve detection.

关键词： Distortion Transforms Lenses Cameras image edge detection Calibration Shape

来源：评论

学校读者我要写书评

暂无评论

Hardware-oriented feature extraction based on compressive sensing 15

Hardware-oriented feature extraction based on compressive se...

引用

Proceedings of the 9th International conference on Distributed Smart Cameras

作者： Marco Trevisi Ricardo Carmona-Galán Ángel Rodríguez-vázquez Instituto de Microelectrónica de Sevilla (IMSE-CNM) Spain

ISBN: (纸本)9781450336819

Feature extraction is used to reduce the amount of resources required to describe a large set of data. A given feature can be represented by a matrix having the same size as the original image but having relevant values only in some specific points. We can consider this sets as being sparse. Under this premise many algorithms have been generated to extract features from compressive samples. None of them though is easily described in hardware. We try to bridge the gap between compressive sensing and hardware design by presenting a sparsifying dictionary that allows compressive sensing reconstruction algorithms to recover features. The idea is to use this work as a starting point to the design of a smart imager capable of compressive feature extraction. To prove this concept we have devised a simulation by using the Harris corner detection and applied a standard reconstruction method, the Nesta algorithm, to retrieve corners instead of a full image.

关键词： compressive feature extraction

来源：评论

学校读者我要写书评

暂无评论

reconstruction of Gated Dynamic Cardiac SPECT data Using Spatiotemporal Basis Functions

Reconstruction of Gated Dynamic Cardiac SPECT Data Using Spa...

引用

IEEE Nuclear Science Symposium and Medical Imaging conference

作者： Uttam Shrestha Fares Alhassen Youngho Seo Elias H. Botvinick Grant T. Gullberg Department of Radiology and Biomedical Imaging University of California San Francisco

ISBN: (纸本)9781467320283

Modeling of data from a dynamic acquisition is complicated by the combination of camera motion, organ motion, and the time-varying nature of the radionuclide distribution being imaged which results in inconsistent projection data sets. Our approach is to estimate the time varying radionuclide distribution directly from projection data. Entire tomographic slices or volumes are represented by a multiresolution spatiotemporal parameterization. The heart is modeled using spatiotemporal model that takes into account changes in the deformation of the heart as well as changes in the intensity of the signal caused by uptake and washout of the radiopharmaceutical from the heart and motion of the camera. We have developed an algorithm to reconstruct the continuous kinetics of the radiopharmaceutical by using spatiotemporal basis functions when the cardiac cycle of the heart is uniformly gated. The temporal basis functions are chosen to reflect the optimal tracer dynamics while the gate basis functions are assumed to be periodic with respect to the beating of the heart. Our preliminary results show that the fast gantry rotation of the SPECT camera can delineate the proper positioning of the myocardium in the reconstructed image while the 'out of phase' slow camera rotation smear out the motion of the heart.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Accurate Event-Driven Motion Compensation Incorporating All Detected Events

Accurate Event-Driven Motion Compensation Incorporating All ...

引用

IEEE Symposium on Nuclear Science (NSS/MIC)

作者： A. Rahmim K. Dinelle J. C. Cheng M. A. Shilov W. P. Segars O. G. Rousset B. M. W. Tsui D. F. Wong v. Sossi Division of Nuclear Medicine Department of Radiology Johns Hopkins University Baltimore MD USA Department of Physics and Astronomy University of British Columbia Vancouver BC Canada Division of Med. Imaging Physics Department of Radiology Johns Hopkins University Baltimore MD USA

This work develops and investigates a formalism for accurate motion-compensated reconstruction, including elaborate consideration of scattered and random coincidences, which at the same time is particularly feasible in the context of high-resolution PET. The method takes into consideration normally-detected projection data which are not detected due to motion. Furthermore, it incorporates information from all detected events, particularly those which, following correction for motion, fall outside the Fov (e.g. axially or through detector gaps), thus satisfying a mathematical requirement, elaborated in the text, that would allow accurate motion averaging of sensitivity factors in image-space (as opposed to projection-space). The proposed method has been extensively validated using phantom experiments as well as realistic simulations of a new mathematical brain phantom developed in this work.

关键词： Motion compensation Event detection Motion detection image reconstruction Positron emission tomography Detectors Scattering Imaging phantoms Spatial resolution Motion estimation

来源：评论

学校读者我要写书评

暂无评论

AGG-Net: Attention Guided Gated-convolutional Network for Depth image Completion

AGG-Net: Attention Guided Gated-convolutional Network for De...

引用

International conference on Computer vision (ICCv)

作者： Dongyue Chen Tingxuan Huang Zhimin Song Shizhuo Deng Tong Jia College of Information Science and Engineering Northeastern University Shenyang China National Frontiers Science Center for Industrial Intelligence and Systems Optimization Northeastern University Shenyang China Foshan Graduate School of Innovation Northeastern University Foshan China

Recently, stereo vision based on lightweight RGBD cameras has been widely used in various fields. However, limited by the imaging principles, the commonly used RGB-D cameras based on TOF, structured light, or binocular vision acquire some invalid data inevitably, such as weak reflection, boundary shadows, and artifacts, which may bring adverse impacts to the follow-up work. In this paper, we propose a new model for depth image completion based on the Attention Guided Gated-convolutional Network (AGG-Net), through which more accurate and reliable depth images can be obtained from the raw depth maps and the corresponding RGB images. Our model employs a UNet-like architecture which consists of two parallel branches of depth and color features. In the encoding stage, an Attention Guided Gated-Convolution (AG-GConv) module is proposed to realize the fusion of depth and color features at different scales, which can effectively reduce the negative impacts of invalid depth data on the reconstruction. In the decoding stage, an Attention Guided Skip Connection (AG-SC) module is presented to avoid introducing too many depth-irrelevant features to the reconstruction. The experimental results demonstrate that our method outperforms the state-of-the-art methods on the popular benchmarks NYU-Depth v2, DIML, and SUN RGB-D. https://***/htx0601/AGG-Net

关键词：

来源：评论

学校读者我要写书评

暂无评论

Reconstructing the Forest of Lineage Trees of Diverse Bacterial Communities Using Bio-inspired image Analysis

Reconstructing the Forest of Lineage Trees of Diverse Bacter...

引用

European Signal Processing conference

作者： Athanasios D. Balomenos Elias S. Manolakos Department of Informatics and Telecommunications National and Kapodistrian University of Athens Ilissia Greece

Cell segmentation and tracking allow us to extract a plethora of cell attributes from bacterial time-lapse cell movies, thus promoting computational modeling and simulation of biological processes down to the single-cell level. However, to analyze successfully complex cell movies, imaging multiple interacting bacterial clones as they grow and merge to generate overcrowded bacterial communities with thousands of cells in the field of view, segmentation results should be near perfect to warrant good tracking results. We introduce here a fully automated closed-loop bio-inspired computational strategy that exploits prior knowledge about the expected structure of a colony's lineage tree to locate and correct segmentation errors in analyzed movie frames. We show that this correction strategy is effective, resulting in improved cell tracking and consequently trustworthy deep colony lineage trees. Our image analysis approach has the unique capability to keep tracking cells even after clonal subpopulations merge in the movie. This enables the reconstruction of the complete Forest of Lineage Trees (FLT) representation of evolving multi-clonal bacterial communities. Moreover, the percentage of valid cell trajectories extracted from the image analysis almost doubles after segmentation correction. This plethora of trustworthy data extracted from a complex cell movie analysis enables single-cell analytics as a tool for addressing compelling questions for human health, such as understanding the role of single-cell stochasticity in antibiotics resistance without losing site of the inter-cellular interactions and microenvironment effects that may shape it.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Cascaded Generative and Discriminative Learning for Microcalcification Detection in Breast Mammograms

Cascaded Generative and Discriminative Learning for Microcal...

引用

IEEE/CvF conference on Computer vision and Pattern Recognition

作者： Fandong Zhang Ling Luo Xinwei Sun Zhen Zhou Xiuli Li Yizhou Yu Yizhou Wang Center for Data Science Peking University Deepwise AI Lab

ISBN: (纸本)9781728132945

Accurate microcalcification (μC) detection is of great importance due to its high proportion in early breast cancers. Most of the previous μC detection methods belong to discriminative models, where classifiers are exploited to distinguish μCsfrom other backgrounds. However, it is still challenging for these methods to tell the μCs from amounts of normal tissues because they are too tiny (at most 14 pixels). Generative methods can precisely model the normal tissues and regard the abnormal ones as outliers, while they fail to further distinguish the μCs from other anomalies, i.e. vessel calcifications. In this paper, we propose a hybrid approach by taking advantages of both generative and discriminative models. Firstly, a generative model named Anomaly Separation Network (ASN) is used to generate candidate μCs. ASN contains two major components. A deep convolutional encoder-decoder network is built to learn the image reconstruction mapping and a t-test loss function is designed to separate the distributions of the reconstruction residuals of μCs from normal tissues. Secondly, a discriminative model is cascaded to tell the μCs from the false positives. Finally, to verify the effectiveness of our method, we conduct experiments on both public and in-house datasets, which demonstrates that our approach outperforms previous state-of-the-art methods.

关键词： Discrimination Learning Microcalcification cascades Breast Cancer Digital Mammography Classifiers outliers Tell Breast

来源：评论

学校读者我要写书评

暂无评论

Quasi Real-Time Summarization for Consumer videos

Quasi Real-Time Summarization for Consumer Videos

引用

IEEE conference on Computer vision and Pattern Recognition

作者： Bin Zhao Eric P. Xing School of Computer Science Carnegie Mellon University

ISBN: (纸本)9781479951192

With the widespread availability of video cameras, we are facing an ever-growing enormous collection of unedited and unstructured video data. Due to lack of an automatic way to generate summaries from this large collection of consumer videos, they can be tedious and time consuming to index or search. In this work, we propose online video high-lighting, a principled way of generating short video summarizing the most important and interesting contents of an unedited and unstructured video, costly both time-wise and financially for manual processing. Specifically, our method learns a dictionary from given video using group sparse coding, and updates atoms in the dictionary on-the-fly. A summary video is then generated by combining segments that cannot be sparsely reconstructed using the learned dictionary. The online fashion of our proposed method enables it to process arbitrarily long videos and start generating summaries before seeing the end of the video. Moreover, the processing time required by our proposed method is close to the original video length, achieving quasi real-time summarization speed. Theoretical analysis, together with experimental results on more than 12 hours of surveillance and YouTube videos are provided, demonstrating the effectiveness of online video highlighting.

关键词： videos Dictionaries image segmentation vectors Encoding image reconstruction Feature extraction

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159页 << < 144 145 146 147 148 149 150 151 152 153 > >>

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：