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Urban scene understanding from aerial and ground LIDAR data

Eunyoung Kim, Gérard Medioni
2010 Machine Vision and Applications  
The inferred large structures are then used as geometric context to segment linear structures, such as power lines, and structures attached to walls and roofs from remaining unclassified 3D points in the  ...  We then group adjacent planar surfaces with consistent pose to find surface segments and classify them as either the terrain or roofs of buildings.  ...  Using the results of object segmentation, we intend to extend our work to 3D object classification to recognize urban infrastructure in the environment.  ... 
doi:10.1007/s00138-010-0279-7 fatcat:z3pqrotcwrgsdoqpzmd6bfupam

Deciphering Tumour Tissue Organization by 3D Electron Microscopy and machine learning [article]

Baudouin Denis de Senneville, Fatma Zohra Khoubai, Marc Bevilacqua, Alexandre Labedade, Kathleen Flosseau, Christophe Chardot, Sophie Branchereau, Jean Ripoche, Stefano Cairo, Etienne Gontier, Christophe Grosset
2021 bioRxiv   pre-print
Finally, a set of tumour cells polarized in the direction of a hot spot corresponding to a bile canaliculus-like structure.  ...  We also discovered that the blood capillary controls the planar alignment and size of tumour cells in their 3D milieu.  ...  We also discovered that the blood capillary controls the planar alignment and size of tumour cells in their 3D milieu.  ... 
doi:10.1101/2021.06.15.446847 fatcat:vje5hrnwbnfprp5yvuoifqpxlu

Extraction, matching, and pose recovery based on dominant rectangular structures

Jana Košecká, Wei Zhang
2005 Computer Vision and Image Understanding  
In this paper we present an approach for automatic extraction of dominant rectangular structures from a single view and show how they facilitate the recovery of camera pose, planar structure and matching  ...  can be de- tected and matched despite the presence of multiple repetitive structures often encountered in a variety of buildings.  ...  to the actual planar structures in the world.  ... 
doi:10.1016/j.cviu.2005.04.005 fatcat:d35of5e6lzchhmwwu4jgxagki4

Fast Fully Automatic Segmentation of the Human Placenta from Motion Corrupted MRI [chapter]

Amir Alansary, Konstantinos Kamnitsas, Alice Davidson, Rostislav Khlebnikov, Martin Rajchl, Christina Malamateniou, Mary Rutherford, Joseph V. Hajnal, Ben Glocker, Daniel Rueckert, Bernhard Kainz
2016 Lecture Notes in Computer Science  
In this paper we propose a fully automatic segmentation framework of the placenta from structural T2-weighted scans of the whole uterus, as well as an extension in order to provide an intuitive pre-natal  ...  We adopt a 3D multi-scale convolutional neural network to automatically identify placental candidate pixels.  ...  Medical Interaction Toolkit (http://mitk.org/) was used for some of the figures.  ... 
doi:10.1007/978-3-319-46723-8_68 fatcat:jjolbmavvvd4pjqfjzonax7lwe

Extraction, matching and pose recovery based on dominant rectangular structures

Wei Zhang, J. Kosecka
2003 First IEEE International Workshop on Higher-Level Knowledge in 3D Modeling and Motion Analysis, 2003. HLK 2003.  
In this paper we present an approach for automatic extraction of dominant rectangular structures from a single view and show how they facilitate the recovery of camera pose, planar structure and matching  ...  be detected and matched despite the presence of multiple repetitive structures often encountered in a variety of buildings.  ...  to the actual planar structures in the world.  ... 
doi:10.1109/hlk.2003.1240862 dblp:conf/hlk/ZhangK03 fatcat:wagr4q7fj5e7jncpve4cyqylhm

Three-dimensional point cloud plane segmentation in both structured and unstructured environments

Junhao Xiao, Jianhua Zhang, Benjamin Adler, Houxiang Zhang, Jianwei Zhang
2013 Robotics and Autonomous Systems  
This paper focuses on three-dimensional (3D) point cloud plane segmentation.  ...  Afterwards, only planar subwindows are employed in the former algorithm, whereas both kinds of subwindows are used in the latter.  ...  We would also like to thank Prof. Kaustubh Pathak from the Jacobs Robotics group at Jacobs University Bremen for providing us an access to their code (PBRG).  ... 
doi:10.1016/j.robot.2013.07.001 fatcat:cqkstoyum5abhjzioafnd2i4yu

Planar Patch based 3D Environment Modeling with Stereo Camera

Eunyoung Kim, Gerard Medioni, Sukhan Lee
2007 RO-MAN 2007 - The 16th IEEE International Symposium on Robot and Human Interactive Communication  
To overcome this limitation" we detect planar patches in the environment by region segmentation in 2D and plane extraction in 3D.  ...  The extracted planar patches are used not only to represent the workspace, but also to fill holes in range data.  ...  Lakaemper [6] also introduced a method for segmenting planar structures using extended EM.  ... 
doi:10.1109/roman.2007.4415141 dblp:conf/ro-man/KimML07 fatcat:4yvhizkz2zbxzdjee7z64cza7a

Automatic whole cell organelle segmentation in volumetric electron microscopy [article]

Larissa Heinrich, Davis Bennett, David Ackerman, Woohyun Park, John Bogovic, Nils Eckstein, Alyson Petruncio, Jody Clements, C. Shan Xu, Jan Funke, Wyatt Korff, Harald Hess (+4 others)
2020 bioRxiv   pre-print
Automatic reconstructions were used to directly quantify various previously inaccessible metrics about these structures, including their spatial interactions.  ...  Even then, the immense size of datasets and large number of structures to be characterized requires generalizable, automatic methods.  ...  We thank Song Pang and Gleb Shtengel for their work collecting and organizing the FIB-SEM data to seed OpenOrganelle.  ... 
doi:10.1101/2020.11.14.382143 fatcat:pbc5rwsa6bbblmolz4h2mw3shq

Cryo-EM structure of amyloid fibrils formed by the entire low complexity domain of TDP-43 [article]

Qiuye Li, W. Michael Babinchak, Witold K Surewicz
2020 bioRxiv   pre-print
Cryo-EM structure of amyloid formed from the entire TDP-43 low complexity domain reveals single protofilament fibrils containing a large (138-residue), tightly packed core with structural features that  ...  The atomic model provides insight into potential structural perturbations caused by phosphorylation and disease-related mutations.  ...  Two rounds of 3D classification were performed using K=3 and T=4, resulting in 11,026 segments that contributed to a high-resolution reconstruction.  ... 
doi:10.1101/2020.12.14.422689 fatcat:4y3cikktrva4dnoihywbextdbq

Cryo-EM structure of amyloid fibrils formed by the entire low complexity domain of TDP-43

Qiuye Li, W. Michael Babinchak, Witold K. Surewicz
2021 Nature Communications  
Here, we report the cryo-EM structure of amyloid formed from the entire TDP-43 low complexity domain in vitro at pH 4.  ...  a non-planar backbone conformation, resulting in rugged surfaces of fibril ends.  ...  We thank Kunpeng Li for help with cryo-EM acquisition of cryo-EM data, Gunnar F. Schröder and Xinghong Dai for discussions regarding data processing and model building, respectively, and  ... 
doi:10.1038/s41467-021-21912-y pmid:33712624 pmcid:PMC7955110 fatcat:2ie7zhs2hrd3hexvkrkwoxd4la

Viewpoint invariant features from single images using 3D geometry

Yanpeng Cao, John McDonald
2009 2009 Workshop on Applications of Computer Vision (WACV)  
We present an effective scheme to recover 3D planar surfaces using the extracted line segments and their associated vanishing points.  ...  Experiments are carried out to demonstrate the proposed scheme ability to effectively handle very difficult wide baseline matching tasks in the presence of repetitive building structures and significant  ...  Acknowledge Research presented in this paper was funded by a Strategic Research Cluster grant (07/SRC/I1168) by Science Foundation Ireland under the National Development Plan.  ... 
doi:10.1109/wacv.2009.5403061 dblp:conf/wacv/CaoM09 fatcat:ih4u474sbjcnrcmuxaalm23jom

Secretin PulD: Association with pilot PulS, structure, and ion-conducting channel formation

N. Nouwen, N. Ranson, H. Saibil, B. Wolpensinger, A. Engel, A. Ghazi, A. P. Pugsley
1999 Proceedings of the National Academy of Sciences of the United States of America  
Fusion of proteoliposomes containing the purified complex with a planar lipid bilayer resulted in the appearance of small, voltage-activated, ion-conducting channels.  ...  displacements of domains in the purified complex rather than to a complete opening of the secretin channel.  ...  We are grateful to Shirley Müller for her expert help with the STEM mass analysis, Ben de Kruijff for advice regarding the stoichiometry measurements, Odile Possot and Manon Gérard for antibodies against  ... 
doi:10.1073/pnas.96.14.8173 pmid:10393967 pmcid:PMC22207 fatcat:sa2pw6blirgwjgk2dkg4smdyn4

Joint Color-Spatial-Directional Clustering and Region Merging (JCSD-RM) for Unsupervised RGB-D Image Segmentation

Md. Abul Hasnat, Olivier Alata, Alain Tremeau
2016 IEEE Transactions on Pattern Analysis and Machine Intelligence  
Moreover, it opens interesting perspectives to fuse color and geometry in an unsupervised manner.  ...  Recent advances in depth imaging sensors provide easy access to the synchronized depth with color, called RGB-D image.  ...  [44] extended it by incorporating surface normals to segment colored 3D laser point clouds.  ... 
doi:10.1109/tpami.2015.2513407 pmid:26731640 fatcat:ffjddcxpvvgplc3dqgo6ltrtgi

Robust estimation of planar surfaces using spatio-temporal RANSAC for applications in autonomous vehicle navigation

Faisal Mufti, Robert Mahony, Jochen Heinzmann
2012 Robotics and Autonomous Systems  
Classical 3D spatial RANSAC is extended to 4D spatio-temporal RANSAC by developing spatio-temporal models of planar surfaces that incorporate a linear motion model as well as linear environment features  ...  These surfaces' estimates are then used to provide statistical tests to identify obstacles and dangers in the environment.  ...  The EM approach has been further explored by Triebel et al. [43] using Hierarchical EM and by Lakaemper and Latecki in [44] using extended EM.  ... 
doi:10.1016/j.robot.2011.08.009 fatcat:xa3i6d4cu5b4dktd5jgxbjys5i

A Feature-based Approach for Dense Segmentation and Estimation of Large Disparity Motion

Josh Wills, Sameer Agarwal, Serge Belongie
2006 International Journal of Computer Vision  
In addition, we present applications of our method to automatic object removal and to structure from motion.  ...  We also present an extension that accounts for the case of non-planar motion, in which we use our planar motion segmentation results as an initialization for a regularized Thin Plate Spline fit.  ...  Acknowledgements Our approach for motion segmentation has appeared in [37] , the extension to non-planar motion has appeared in [38] , and the approach for structure from periodic motion has appeared  ... 
doi:10.1007/s11263-006-6660-3 fatcat:lrf2kfm7ojg7xf7thfl6ium4r4
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