有哪些信誉好的足球投注网站- 1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
- 2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击 这里二次下载。
- 3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
- 4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
- 5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
- 6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
- 7、VIP文档为合作方或网友上传，每下载1次， 网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档
查看更多
Limited-view Neutron CT Reconstruction with Sample Boundary.pdf
Available online at
ScienceDirect
Physics Procedia 69 (2015) 252 – 257
10 World Conference on Neutron Radiography 5-10 October 2014
Limited-view Neutron CT Reconstruction with Sample Boundary
Hu Wang, Yubin Zou*, Yuanrong Lu, Zhiyu Guo
State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
Abstract Reconstruction of limited-view CT is an ill-posed inversion problem. In order to suppress the artefacts and improve the image quality, it has been proved to be a good method to incorporate some a priori information of the sample (refers to as constraint in this paper) to the iterative process. In this paper, sample boundary is considered as a constraint and SART algorithm is chosen to test the performance of the constraint. Reconstructions from different number of projections of the famous Shepp-Logan head phantom with different levels of noise were simulated; projection data of a spark plug was acquired on the cold neutron CT platform of China Advanced Research Reactor (CARR) and the spark plug was reconstructed as well. Both the simulation and experimental results show that SART algorithm with sample boundary constraint leads to remarkable improvement of image quality and convergence speed for limited-view CT reconstruction when the noise level of projection data is less than 5%. ??ThheeAAuuthtohrosr.sP.uPbulibshliesdhebdy bEylsEevliseervBie.Vr .BT.hVis. is an open access article under the CC BY-NC-ND license SS(heetllteepcc:/tt/iicoornenaaatninvddepcpeoeemre-mrre-orvenievsw.ioerwugn/lduiecnrednreesrespsr/eobsnyps-ionbncil-sinitbydi/o4lif.t0yP/)ao.ufl PSacuhelrSrecrhIenrsrteitruItnstitut. Keywords: Neutron CT; Limited-view; SART; Sample boundary constraint
1. Introduction With sufficient projection views, the attenuation coefficient matrix of the sample can be reconstructed with the
filtered back-projection (FBP) algorithm fast and precisely; however, in many practical situations, such as industrial non-destructive te
您可能关注的文档
- How to measure the real contact area A simple marker and relocation foot-printing approach.pdf
- HR职场兵法大全-hrhc.com.cn.cn.ge100.com.doc
- Human field of regard, field of view, and attention bias.pdf
- Human gait recognition based on deterministic learning through multiple views fusion.pdf
- Human movement analysis around a view circle using time-order similarity distributions.pdf
- Human Tear Fluid Reduces Culturability of Contact Lens-Associated Pseudomonas aeruginosa Biofilms but Induces Expression of the Virulence-Associated Type III Secretion System.pdf
- Human–computer interaction viewed as pseudo-communication.pdf
- Hypothesis-testing combined with image analysis to quantify evolution of bubble swarms in a direct-contact boiling heat transfer process.pdf
- Hysteretic behavior of contact force response in triboelectric nanogenerator.pdf
- I bet they aren’t that perfect in reality Appearance ideals viewed from the perspective of adolescents with a positive body image.pdf
- Linux硬盘克隆备份详细图解.doc
- Local debates about ‘landscape’ as viewed by German regional planners Results of a representative survey in a discourse-analytical framework.pdf
- Local linear neighbor reconstruction for multi-view data.pdf
- Local voting based multi-view embedding.pdf
- Locality-constrained linear coding based bi-layer model for multi-view facial expression recognition.pdf
- Long wavelength infrared radiation thermometry for non-contact temperature measurements in gas turbines.pdf
- Love me, love me not A nuanced view on collaboration in sustainable supply chains.pdf
- Love's rectangular contact problem revisited A complete solution.pdf
- Low Cost Semi Automated Assembly Unit for Small Size Back Contact Modules and Low Cost Interconnection Approach.pdf
- Low vision rehabilitation services in Michigan viewed against the national backdrop.pdf
文档评论（0）