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Junction-aware shape descriptor for 3D articulated models using local shape-radius variation

Jinlong Feng, Yu-Shen Liu, Lianjie Gong
2015 Signal Processing  
This paper presents a new junction-aware shape descriptor for a 3D articulated model defined by a closed mesh surface.  ...  The core idea is to exploit the local shape-radius variation for encoding junction information on the shape boundary surface, where the shape-radius at each point on the surface is the radius of corresponding  ...  Computing shape-radius variation After approximating the local shape-radius of each vertex on the boundary, the next step is to develop a junction-aware shape descriptor for a 3D articulated model based  ... 
doi:10.1016/j.sigpro.2014.05.025 fatcat:h3gaphhd4nhaffhd7ut7rzt7nm

SEG-MAT: 3D Shape Segmentation Using Medial Axis Transform

Cheng Lin, Lingjie Liu, Changjian Li, Leif Kobbelt, Bin Wang, Shiqing Xin, Wenping Wang
2020 IEEE Transactions on Visualization and Computer Graphics  
Existing methods for 3D shape segmentation suffer from complex geometry processing and heavy computation caused by using low-level features and fragmented segmentation results due to the lack of global  ...  different parts of a 3D shape.  ...  ACKNOWLEDGMENTS We would like to thank the anonymous reviewers for their valuable feedback and Yiling Pan for her help with data processing.  ... 
doi:10.1109/tvcg.2020.3032566 pmid:33079671 fatcat:srdnh652mrgitiyljuz5ks3fju

Matching 2D and 3D articulated shapes using the eccentricity transform

Adrian Ion, Nicole M. Artner, Gabriel Peyré, Walter G. Kropatsch, Laurent D. Cohen
2011 Computer Vision and Image Understanding  
This paper presents a novel method for 2D and 3D shape matching that is insensitive to articulation. It uses the eccentricity transform, which is based on the computation of geodesic distances.  ...  These two histograms make up a highly compact descriptor and the resulting method for shape matching is straightforward.  ...  Depending on the task, the invariance of this signature to local deformations such as articulation is important for the identification of 2D and 3D shapes.  ... 
doi:10.1016/j.cviu.2011.02.006 fatcat:4gw54bq5hvcepducjpmlk4ubya

A comparison of 3D shape retrieval methods based on a large-scale benchmark supporting multimodal queries

Bo Li, Yijuan Lu, Chunyuan Li, Afzal Godil, Tobias Schreck, Masaki Aono, Martin Burtscher, Qiang Chen, Nihad Karim Chowdhury, Bin Fang, Hongbo Fu, Takahiko Furuya (+10 others)
2015 Computer Vision and Image Understanding  
To promote this research area, two Shape Retrieval Contest (SHREC) tracks on large scale comprehensive and sketch-based 3D model retrieval have been organized by us in 2014.  ...  Large-scale 3D shape retrieval has become an important research direction in content-based 3D shape retrieval.  ...  We would also like to thank the following authors for building the 3D benchmarks:  ... 
doi:10.1016/j.cviu.2014.10.006 fatcat:d3feizyi6rg63g5lra7mczvj2a

From 3D Point Clouds to Pose-Normalised Depth Maps

Nick Pears, Tom Heseltine, Marcelo Romero
2009 International Journal of Computer Vision  
For example, in stage (ii), construction of novel invariant features is based on sampling this RBF over a set of concentric spheres to give a spherically-sampled RBF (SSR) shape histogram.  ...  In stage (iii), a second novel descriptor, called an isoradius contour curvature signal, is defined, which allows rotational alignment to be determined using a simple process of 1D correlation.  ...  However, the use of RBFs specifically for 3D facial feature descriptors is currently sparse and the only related RBF-based 3D face feature extraction that we are aware of is that of Hou and Bai (2005)  ... 
doi:10.1007/s11263-009-0297-y fatcat:xsszsd64afdptjrqnuusac4s5q

Computational methods for understanding 3D shapes

M. Attene, S. Biasotti, M. Mortara, G. Patanè, M. Spagnuolo, B. Falcidieno
2006 Computers & graphics  
, or product modeling.  ...  Understanding shapes has been a challenging issue for many years, firstly motivated by computer vision and more recently by many complex applications in diverse fields, such as medical imaging, animation  ...  The authors thank all the members of the Shape Modeling Group of the IMATI-GE/CNR, the co-authors and reviewers of the papers discussed, and the people that, through discussions and suggestions, made it  ... 
doi:10.1016/j.cag.2006.02.007 fatcat:ks6kiuldojetbosfffop3cqcv4

Hand Gesture Recognition Systems: A Survey

Arpita RaySarkar, G. Sanyal, S. Majumder
2013 International Journal of Computer Applications  
Such nonverbal communication are being used not only for the physically challenged people, but also for different applications in diversified areas, such as aviation, surveying, music direction etc.  ...  The major steps associated with the hand gesture recognition system are; data acquisition, gesture modeling, feature extraction and hand gesture recognition.  ...  Coloured markers are also used for tracking the hand and detecting the fingers/ fingertips to model the hand shape [18] . Hand shape can also be represented using 3D modeling.  ... 
doi:10.5120/12435-9123 fatcat:nbt3o5wkjrgzjjdyx24c72wrlu

A Spline-based Volumetric Data Modeling Framework and Its Applications [article]

Bo Li
2013 arXiv   pre-print
These properties make our techniques highly preferable in many physically-based applications including mechanical analysis, shape deformation and editing, virtual surgery training, etc.  ...  In this dissertation, we concentrate on the challenging research issue of developing a spline-based modeling framework, which converts the conventional data (e.g., surface meshes) to tensor-product trivariate  ...  We seek novel modeling techniques based on trivariate tensor-product spline schemes that would allow users to directly construct regular trivariate splines over 3D surface models and preserve all useful  ... 
arXiv:1308.0869v1 fatcat:hiscx3juzzgivfzjdjcahp7une

CARS 2016—Computer Assisted Radiology and Surgery Proceedings of the 30th International Congress and Exhibition Heidelberg, Germany, June 21–25, 2016

2016 International Journal of Computer Assisted Radiology and Surgery  
We would like to thank the Spanish company BQ for the donation of the 3D printing hardware for clinical use.  ...  '', and Amazon Inc., for providing valuable computing resources through an ''AWS in Education Research'' grant.  ...  In this study, we propose an active contour image segmentation method, then we create 3D statistical shape model of Radius and Ulna bones for MRI datasets.  ... 
doi:10.1007/s11548-016-1412-5 pmid:27206418 fatcat:uk5r46n2xvhedkfjzmeiweyneq

A survey on image segmentation using metaheuristic-based deformable models: state of the art and critical analysis

Pablo Mesejo, Óscar Ibáñez, Óscar Cordón, Stefano Cagnoni
2016 Applied Soft Computing  
It aims to serve as a reference work which proposes some guidelines for choosing and designing the most appropriate combination of deformable models and metaheuristics when facing a given segmentation  ...  After recalling the principles underlying deformable models and metaheuristics, we broadly review the different metaheuristic-based approaches to image segmentation based on deformable models, and conclude  ...  In [153] , a parametric 3-D medial-axis representation (3D-MRep) [185, 186] is used as shape model. The parameters defining the 3D-MRep shape are encoded and optimized using CMA-ES.  ... 
doi:10.1016/j.asoc.2016.03.004 fatcat:3mgmo7vuurd4tnijod5a5kwn7m

Surround-view Fisheye Camera Perception for Automated Driving: Overview, Survey and Challenges [article]

Varun Ravi Kumar, Ciaran Eising, Christian Witt, Senthil Yogamani
2022 arXiv   pre-print
Surround-view fisheye cameras are commonly used for near-field sensing in automated driving.  ...  Firstly, we provide a unified and taxonomic treatment of commonly used fisheye camera models. Secondly, we discuss various perception tasks and existing literature.  ...  ACKNOWLEDGMENT The authors would like to thank Balaji Sankar Balachandaran, Jacob Roll and Louis Kerofsky from Qualcomm for providing detailed review comments.  ... 
arXiv:2205.13281v1 fatcat:veh434tmqrbknji3rgn6uicdtu

3D model representation and manipulation based on skeletonization

Liang Shi
a more robust descriptor for model simplification and registration.  ...  By introducing a framework based on Scale-Space-Filtering (SSF), I integrate both the global node significance and the local chain-coded structure for pose-aware model retrieval; then adopt the topological  ...  Vicky Zhao for their suggestions and help to improve the work.  ... 
doi:10.7939/r3n616 fatcat:qtwl5ommy5h73lotgsoixiytue

The 13th International Conference on Advances in Quantitative Laryngology, Voice and Speech Research (June 2–4, 2019, Montreal, Quebec, Canada)

2019 Applied Sciences  
The conference and workshops provide a unique opportunity for partnership and collaboration in the advancement of quantitative methods for the measurement and modelling of voice and speech.  ...  The AQL accomplishes this mandate by facilitating an interprofessional scientific conference and training intended for an international community of otolaryngologists, speech–language pathologists and  ...  for vowel voicing (at least at the speech planning level).  ... 
doi:10.3390/app9132665 fatcat:xg47la5zkngzxaqe4cdeyv63rq

Three-dimensional point-cloud room model in room acoustics simulations

Milos Markovic, So/ren K. Olesen, Dorte Hammersho/i
2013 Journal of the Acoustical Society of America  
These data are used to build a 3D point-cloud model of the room.  ...  As a first assessment, their performances in terms of sound localization accuracy will be compared using a new set of objective criteria descriptors.  ...  Complex pressure fields are computed using a parabolic equation Nested sampling is increasingly being used to calculate the evidence for competing models in Bayesian model comparison problems arising in  ... 
doi:10.1121/1.4806371 fatcat:ln4w6j7cjvchrckf2gzfmeiwoi

Program of the 89th Annual Meeting of the American Association of Physical Anthropologists

2020 American Journal of Physical Anthropology  
We conclude that two of the main factors underlying GC variation in wild hamadryas baboons are age and female reproductive state, highlighting the need to control for such factors when using GCs as a proxy  ...  for environmental challenges.  ...  Foundation (1826656) The developmental basis for variation in the human shoulder Kinetics of stone tool production in novice and expert toolmakers  ... 
doi:10.1002/ajpa.24023 pmid:32058585 fatcat:gulriykcvbgdbikcya2xflv73a
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