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In-Situ 3D Indoor Modeler with a Camera and Self-contained Sensors [chapter]

Tomoya Ishikawa, Kalaivani Thangamani, Masakatsu Kourogi, Andrew P. Gee, Walterio Mayol-Cuevas, Keechul Jung, Takeshi Kurata
2009 Lecture Notes in Computer Science  
The modeler allows a user easily to create models from a single photo by interaction techniques taking advantage of features in indoor space and visualization techniques.  ...  positions to take a photo for the regions.  ...  Freeform tool: creates a 3D freeform plane by giving a set of 3D points laying on the contour through repeated mouse clicks. This tool is used for more complex objects.  ... 
doi:10.1007/978-3-642-02771-0_51 fatcat:d5ykmvyuvbbkhlxvleqc5zusem

Evolving Amorphous Robots

Jonathan D. Hiller, Hod Lipson
2010 Workshop on the Synthesis and Simulation of Living Systems  
The challenges of representing evolvable multi-material freeform shapes and evaluation (simulation) of the resulting soft bodies are discussed.  ...  Actuation is accomplished by periodic volumetric expansion and contraction of one or more of these materials.  ...  Acknowledgements This work was supported in part by a National Science Foundation Graduate Research Fellowship and NSF Creative-IT grant 0757478.  ... 
dblp:conf/alife/HillerL10 fatcat:6fzdwczir5d35ldiky2k2d4lme

Freeform manufacturing of a microoptical lens array on a steep curved substrate by use of a voice coil fast tool servo

Sebastian Scheiding, Allen Y. Yi, Andreas Gebhardt, Lei Li, Stefan Risse, Ramona Eberhardt, Andreas Tünnermann
2011 Optics Express  
These 3D structures show no rotational symmetry, but rather high frequency asymmetric features thus can be treated as freeform geometries.  ...  points.  ...  ) and the Ohio State University by the Fraunhofer program Prof X 2 .  ... 
doi:10.1364/oe.19.023938 pmid:22109418 fatcat:nlv3boxaxzc4ha5tfywp2l2nha

3D level-set topology optimization: a machining feature-based approach

Jikai Liu, Y. -S. Ma
2015 Structural And Multidisciplinary Optimization  
inserted, the feature-based shape optimization algorithm is implemented to determine the optimum part shape and topology.  ...  Therefore, feature-based design can be realized without special requirement of initial input or any post-processing.  ...  Fig. 13 Optimization processes of different schemes 3D level-set topology optimization: a machining feature-based approach analysis on the shape parameters or control points can be calculated by applying  ... 
doi:10.1007/s00158-015-1263-7 fatcat:buvhc4aasjbuhhaoq77qdw5ppu

From computer-aided to intelligent machining: Recent advances in computer numerical control machining research

Yingguang Li, Chen-Han Lee, James Gao
2015 Proceedings of the Institution of mechanical engineers. Part B, journal of engineering manufacture  
From the regular shaped feature to freeform surface feature, the feature technology has been used in manufacturing of complex parts, such as aircraft structural parts.  ...  As the information and knowledge carrier, feature is the efficacious way to achieve intelligent manufacturing.  ...  Meanwhile, limited by the orthographic views, the features constructed by freeform surfaces were hard to extract.  ... 
doi:10.1177/0954405414560622 fatcat:cn44it362bc5rn47esilgt5rvi

Review of state-of-the-art artificial compound eye imaging systems

Yang Cheng, Jie Cao, Yangkun Zhang, Qun Hao
2019 Bioinspiration & Biomimetics  
Next, we present the applications of the artificial compound eye imaging system including imaging with a large FOV, imaging with high resolution, object distance detection, medical imaging, egomotion estimation  ...  The natural compound eye has received much attention in recent years due to its remarkable properties, such as its large field of view (FOV), compact structure, and high sensitivity to moving objects.  ...  Acknowledgments This work is supported by the National Key Foundation for Exploring Scientific Instrument (2014YQ350461), the National Natural Science Foundation of China (No. 61605008), and the Beijing  ... 
doi:10.1088/1748-3190/aaffb5 pmid:30654337 fatcat:n5uq6pntcvgj3oe23qz7b57hhq

Remixing Functionally Graded Structures: Data-Driven Topology Optimization with Multiclass Shape Blending [article]

Yu-Chin Chan, Daicong Da, Liwei Wang, Wei Chen
2021 arXiv   pre-print
Compliance and shape matching examples using common truss geometries and diversity-based freeform topologies demonstrate the versatility of our framework, while studies on the effect of the number and  ...  Moreover, it transforms the microscale problem into an efficient, low-dimensional one without confining the design to predefined shapes.  ...  The shape and property diverse freeform basis classes shown in Fig. 3d and e .  ... 
arXiv:2112.00648v1 fatcat:f6ygbataknfwjaxplqrgzumlwq

Model globally, match locally: Efficient and robust 3D object recognition

Bertram Drost, Markus Ulrich, Nassir Navab, Slobodan Ilic
2010 2010 IEEE Computer Society Conference on Computer Vision and Pattern Recognition  
This paper addresses the problem of recognizing freeform 3D objects in point clouds.  ...  pair features and matches that model locally using a fast voting scheme.  ...  By contrast, our approach works with general 3D point clouds and is equally efficient without parallelization.  ... 
doi:10.1109/cvpr.2010.5540108 dblp:conf/cvpr/DrostUNI10 fatcat:vpfgp6sr65eknc34rghqzdxvr4

Accuracy Evaluation of Dense Matching Techniques for Casting Part Dimensional Verification

Gorka Kortaberria, Unai Mutilba, Eneko Gomez-Acedo, Alberto Tellaeche, Rikardo Minguez
2018 Sensors  
New measurement methods, such as dense matching techniques, rely on surface texture of casting parts to enable the 3D dense reconstruction of surface points without the need of an active light source as  ...  It compares the accuracy obtained by dense matching technique with already certified and validated optical measuring methods.  ...  Acknowledgments: This research was supported by the Basque business development agency and is the output of ESTRATEUS project (Reference IE14-396) where novel manufacturing and measuring methods were studied  ... 
doi:10.3390/s18093074 pmid:30217026 pmcid:PMC6164126 fatcat:2irw4d4gwzhvtmyysluys55g5m

New developments in coordinate measuring machines for manufacturing industries

S. Hammad Mian, A. Al-Ahmari
2014 International Journal of Metrology and Quality Engineering  
The technology of micro/nanoscale 3D measurement is still a bottleneck for industries.  ...  In this paper, comprehensive review concerning CMMs with capabilities to measure micro/nano features has been presented.  ...  Inaccurate surface matching method results in misalignment of coordinate systems of two matching objects which cause serious measurement error. Therefore, investigation has been carried by Ren et al.  ... 
doi:10.1051/ijmqe/2014001 fatcat:atboziabtzdular4eyq35uhvpq

Three-dimensional shape searching: state-of-the-art review and future trends

Natraj Iyer, Subramaniam Jayanti, Kuiyang Lou, Yagnanarayanan Kalyanaraman, Karthik Ramani
2005 Computer-Aided Design  
We classify and compare various 3D shape searching techniques based on their shape representations.  ...  The paper concludes by identifying gaps in current shape search techniques and identifies directions for future research. q  ...  Geometric hashing In this technique, originated by Lamdam and Wolfson [85] , a 3D object is parsed into basic geometric features such as surface points.  ... 
doi:10.1016/j.cad.2004.07.002 fatcat:2q5ltmci6ngufgpt76bcldrobq

COSMOS-A representation scheme for 3D free-form objects

C. Dorai, A.K. Jain
1997 IEEE Transactions on Pattern Analysis and Machine Intelligence  
We assume that a range image of a scene is available, containing a view of a rigid 3D object without occlusion.  ...  A novel concept, the shape spectrum of an object is also introduced within the framework of COSMOS for object view grouping and matching.  ...  It is a shape-based description of objects suitable for representing free-form surfaces without requiring complex 3D analytical modeling of objects.  ... 
doi:10.1109/34.625113 fatcat:gbuzcsdes5d23fb2aiou4dfb6i

A systematic review of digital removable partial dentures. Part II: CAD/CAM framework, artificial teeth, and denture base

Atsushi Takaichi, Kenji Fueki, Natsuko Murakami, Takeshi Ueno, Yuka Inamochi, Junichiro Wada, Yuki Arai, Noriyuki Wakabayashi
2021 Journal of Prosthodontic Research  
In this paper, the computer-aided design/computer-aided manufacturing (CAD/CAM) framework, artificial teeth, and denture base materials are reported.  ...  comprehensively reviewed the current status of the digital workflow of removable partial dentures (RPDs) and summarized information about the fabrication methods and material properties of the dental framework, artificial  ...  of those without these features [82] .  ... 
doi:10.2186/jpr.jpr_d_20_00117 pmid:33504722 fatcat:btgjg5toynbe5eoybixjgckrny

A Review of Point Cloud Registration Algorithms for Mobile Robotics

François Pomerleau, Francis Colas, Roland Siegwart
2015 Foundations and Trends in Robotics  
Multi-feature matching algorithm for freeform 3D surface registration. In Pattern Recognition, 1998. Proceedings of the 14th International Conference on, pages 982-984 vol.2, 1998.  ...  At a given iteration, a set of matches M i is computed from the given relative position of the points.  ... 
doi:10.1561/2300000035 fatcat:2vmcadvfdnf6dhmu5gjrlpn6dq

Review on Panoramic Imaging and Its Applications in Scene Understanding [article]

Shaohua Gao, Kailun Yang, Hao Shi, Kaiwei Wang, Jian Bai
2022 arXiv   pre-print
In this review, we begin with introducing the basic principles of panoramic imaging systems, and then describe the architectures, features, and functions of various panoramic imaging systems.  ...  Afterwards, we discuss in detail the broad application prospects and great design potential of freeform surfaces, thin-plate optics, and metasurfaces in panoramic imaging.  ...  Without changes to the network architecture, their extended model can be used on either rectilinear or equirectangular content by recovering 3D position using image transformation matrix and spherical  ... 
arXiv:2205.05570v1 fatcat:p77fuqtz2re7zna7kapypcwv5i
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