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Towards Pointless Structure from Motion: 3D Reconstruction and Camera Parameters from General 3D Curves

Irina Nurutdinova, Andrew Fitzgibbon
2015 2015 IEEE International Conference on Computer Vision (ICCV)  
Modern structure from motion (SfM) remains dependent on point features to recover camera positions, meaning that reconstruction is severely hampered in low-texture environments, for example scanning a  ...  We show how 3D curves can be used to refine camera position estimation in challenging low-texture scenes.  ...  We also cannot as yet recover motion without some assistance from points, hence our title is "towards" point-less reconstruction.  ... 
doi:10.1109/iccv.2015.272 dblp:conf/iccv/NurutdinovaF15 fatcat:un5qr64h5zcdnnrk2hakp3lru4

Using Hand Motions in Conceptual Shape Design: Theories, Methods and Tools [chapter]

Edit Varga
2008 Product Engineering  
I am grateful to Han Broek, who helped me to feel comfortable at the Section and in the country from the very first days.  ...  Thanks for the presents and for the music. I am thankful to Joris Vergeest for providing me with the motion tracking equipment and for his immediate answers on my questions.  ...  They detect the tip of the user's index finger with the data glove and reconstruct its motion curve from these points.  ... 
doi:10.1007/978-1-4020-8200-9_18 fatcat:otyrcd3qevbyde6bv6iauzkqay

Computational Methods for Single-Particle Cryo-EM [article]

Amit Singer, Fred J. Sigworth
2020 arXiv   pre-print
The high level of noise and the unknown pose parameters are two key elements that make reconstruction a challenging computational problem.  ...  Even more challenging is the inference of structural variability and flexible motions when the individual molecules being imaged are in different conformational states.  ...  From a structural biologist's standpoint, the 3D structure φ is the only parameter of interest; the rotations R1, . . . , Rn are nuisance parameters.  ... 
arXiv:2003.13828v1 fatcat:sa4ifg3vhvhmreh3juxcciylla

Covariance Propagation and Next Best View Planning for 3D Reconstruction [chapter]

Sebastian Haner, Anders Heyden
2012 Lecture Notes in Computer Science  
competing goals of path length and reconstruction accuracy. e same concepts are then applied to the problem of sequential 3D reconstruction from unordered image sequences.  ...  A second topic is refractive structure-and-motion, specifically the problem of absolute pose estimation when the camera and structure are separated by an optically refracting plane.  ...  Reconstruction from Unordered Estimation from Uncertain Geometry e cornerstones of sequential structure-and-motion are triangulation and camera pose estimation.  ... 
doi:10.1007/978-3-642-33709-3_39 fatcat:vdnwuw3e65ds7m7l76oatcycuq

A state of the art of urban reconstruction: street, street network, vegetation, urban feature [article]

Remi Cura, Julien Perret, Nicolas Paparoditis
2018 arXiv   pre-print
The main challenges seems to come from the complex nature of urban environment and from the limitations of the available data.  ...  Although reconstruction strategies vary widely, we can order them by the role the model plays, from data driven approach, to model-based approach, to inverse procedural modelling and model catalogue matching  ...  Using the grammar with the extracted rules and parameters generate a fabricatable 3D model.  ... 
arXiv:1803.04332v1 fatcat:vkvk655qg5chlcceswfo5p3mqa

Vision-based user interfaces: methods and applications

MARCO PORTA
2002 International Journal of Human-Computer Studies  
, face/facial expression recognition, eye tracking and gesture recognition  ...  The focus will mostly be on techniques and prototypes intended for office and home PC-based use, as we are mainly interested in vision technology applied to ordinary computing environments.  ...  These techniques, which do not require 3D reconstructions and are generally simpler and faster, fall into different categories, depending on the basic Figure 13 .  ... 
doi:10.1006/ijhc.2002.1012 fatcat:bfuy7kryznbujia7mdw6ag4cea

Emergence of collective modes and tri-dimensional structures from epithelial confinement

M. Deforet, V. Hakim, H.G. Yevick, G. Duclos, P. Silberzan
2014 Nature Communications  
These results demonstrate that epithelial confinement alone can induce morphogenesis-like processes including spontaneous collective pulsations and transition from 2D to 3D.  ...  However, the basic mechanisms underlying the dynamics of confined cell assemblies remain largely to be deciphered and would greatly benefit from well-controlled in vitro experiments.  ...  We gratefully acknowledge funding from the Association pour la Recherche sur le Cancer, the Ligue Contre le Cancer, the Fondation Pierre-Gilles de Gennes pour la Recherche and the Programme Incitatif et  ... 
doi:10.1038/ncomms4747 pmid:24796352 fatcat:gz3kwkgzjfbhdfslr6s7xg4b24

A statistical inference approach to reconstruct intercellular interactions in cell migration experiments

Elena Agliari, Pablo J. Sáez, Adriano Barra, Matthieu Piel, Pablo Vargas, Michele Castellana
2020 Science Advances  
Migration of cells can be characterized by two prototypical types of motion: individual and collective migration.  ...  This inference method has been first successfully tested on synthetic motional data and then applied to two experiments.  ...  ) ∝ t (Fig. 3D) .  ... 
doi:10.1126/sciadv.aay2103 pmid:32195344 pmcid:PMC7065881 fatcat:ioufezuzqzb73nkk3b5pguvh4a

High throughput automated detection of axial malformations in Medaka embryo

Diane Genest, Elodie Puybareau, Marc Léonard, Jean Cousty, Noémie De Crozé, Hugues Talbot
2019 Computers in Biology and Medicine  
We built and validated our learning model on 1459 images with a 10-fold cross-validation by comparison with the gold standard of 3D observations performed under a microscope by a trained operator.  ...  Fish embryo models are widely used as screening tools to assess the efficacy and/or toxicity of chemicals. This assessment involves the analysis of embryo morphological abnormalities.  ...  Thus, reconstruction tomography could deliver the threedimensional internal structure of the entire medaka embryo organism (3D atlas).  ... 
doi:10.1016/j.compbiomed.2018.12.016 pmid:30654166 fatcat:nen2k7fv7fhbfkfbb52zk7bgca

Introductory Medical Imaging

A. A. Bharath
2008 Synthesis Lectures on Biomedical Engineering  
This is known generically as 3D ultrasound. 3D scanners are not real-time (unless one is imaging to a very shallow depth).  ...  This sort of approach is a very general one, which can be extended to nonplanar (curved) and distributed sources.  ...  The easiest way of handling this problem (and getting the insight we need) is to write a generic set of equations for the forces and motion of the n th mass.  ... 
doi:10.2200/s00165ed1v01y200811bme026 fatcat:2noaxvj5njbjtnxhnsm3tgrwcy

Light propagation in Extreme Conditions - The role of optically clear tissues and scattering layers in optical biomedical imaging [article]

Daniele Ancora
2017 arXiv   pre-print
By making use of appropriate numerical methods, we will prove how it is possible to outperform such hidden reconstruction in a very efficient way, opening the path toward the unexplored field of three-dimensional  ...  In this thesis, we will examine theoretically and experimentally the scattering process from two opposite points of view, focusing also on the continuous stimulus offered by the will to tackle some specific  ...  We also acknowledge support from the Institute of Molecular Biology and Biotechnology of the Foundation for Research and Technology -Hellas for the use of the cell culture facilities.  ... 
arXiv:1706.09409v1 fatcat:qydaizfmhnee5psqqvkmghxe2e

Point-of-Interest Recommendation [chapter]

2017 Encyclopedia of GIS  
The models may range from descriptive, e.g. static estimates of correlations within large databases, to generative, e.g. computing the spread of disease via person-toperson interactions through a large  ...  In general, then, computational epidemiology creates computer models of diffusive processes spreading across interaction networks.  ...  from an initially stringlike 3D structure to their respective native 3D structure.  ... 
doi:10.1007/978-3-319-17885-1_100975 fatcat:myyebmb3hrhgnpqmobyyvm2xum

Motion Adaptation Based on Character Shape

Etienne Lyard, Jose Rolim, Nadia Magnenat Thalmann
2008
I would also like to thank all the MIRALabians for their friendship, discussions and support and especially Marlene Arevalo and Nedjma Cadi for their great models and animations.  ...  Ronan Boulic (EPFL) and Prof. Bertrand Tondu (INSA Toulouse) for giving some of their time to read my dissertation and for their valuable and insightful commentaries regarding my work.  ...  Specially equipped cameras see the markers and reconstruct their location in 3D using simple triangulation principles, and the skeleton motion is then estimated from the markers [ZH03] .  ... 
doi:10.13097/archive-ouverte/unige:725 fatcat:udsdng3nvzegbkd7llguceg7je

Dynamic simulation and optimization of artificial insect-sized flapping wings for a bioinspired kinematics using a two resonant vibration modes combination

D. Faux, O. Thomas, S. Grondel, É. Cattan
2019 Journal of Sound and Vibration  
Our bioinspired kinematics is based on the original concept of using the resonant properties of the wing structure in order to combine the motion of two vibration modes, a flapping and a twisting mode,  ...  One way of achieving this particular combination is to optimize the geometry and elastic characteristics of the flexible structure such that the two modes are successive in the eigenspectrum and close  ...  Acknowledgments This work was supported by ANR-ASTRID CLEAR-Flight (ANR-13-ASTR-0012), RENATECH program, Direction Generale de l'Armement and Haut-de-France Region.  ... 
doi:10.1016/j.jsv.2019.114883 fatcat:opcym7gxzjah5neim53hfe6qaa

Motion compensation and computer guidance for percutenaneous abdominal interventions

Lena Maier-Hein
2009
Many image-guided systems provide an MPR view in addition to a 3D virtual environment generated from the reconstructed 3D imaging data.  ...  It should be pointed out that (apart from several outliers) the automatically generated gating curves were identical to the manually generated ones.  ... 
doi:10.5445/ir/1000011817 fatcat:xbc4ler34bcj3husy242ymzdju
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