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Shape Matching by Segmentation Averaging [chapter]

Hongzhi Wang, John Oliensis
2008 Lecture Notes in Computer Science  
We use segmentations to match images by shape. To address the unreliability of segmentations, we give a closed form approximation to an average over all segmentations.  ...  For segmentation, instead of a maximum a posteriori approach, we compute the "central" segmentation minimizing the average distance to all segmentations of an image.  ...  Conclusion We use image segmentations for shape matching.  ... 
doi:10.1007/978-3-540-88682-2_43 fatcat:buip627emrbcpicbblrnhbg52m

Robust Initialization of Active Shape Models for Lung Segmentation in CT Scans: A Feature-Based Atlas Approach

Gurman Gill, Matthew Toews, Reinhard R. Beichel
2014 International Journal of Biomedical Imaging  
The ASM pose parameters are found by transforming the average lung shape based on an affine transform computed from matching features between the new image and representative lung features.  ...  Our method constructs an atlas consisting of a set of representative lung features and an average lung shape.  ...  This work was supported in part by NIH Grants R01HL111453, P41EB015902, and P41EB015898.  ... 
doi:10.1155/2014/479154 pmid:25400660 pmcid:PMC4221988 fatcat:bwmgfzc4kvdrjg4yro5xqifa3q

Fast Retrieval of Isolated Visual Shapes

Boaz J. Super
2002 Computer Vision and Image Understanding  
Average retrieval times ranged from 0.7 ms on a 131-shape database to 7 ms on a 1310-shape database.  ...  The method is thus suitable for fast, approximate shape retrieval in comparison with more accurate but more costly structural matching. c 2002 Elsevier Science (USA)  ...  The author was supported in part by NIH Grant 1-RO1 EY11747 during the period of this project.  ... 
doi:10.1006/cviu.2002.0959 fatcat:vdrno4tjrzbwbbcqzd4x6jkzlm

Enforcing local context into shape statistics

Byung-Woo Hong, Stefano Soatto, Luminita A. Vese
2008 Advances in Computational Mathematics  
Such a descriptor allows retaining geometric features such as high-curvature structures in the average shape, unlike conventional methods where the average shape is usually smoothed out by generic regularization  ...  The obtained shape statistics are integrated into segmentation as a prior knowledge. The effectiveness of the method is demonstrated through experimental results with synthetic and real images.  ...  The average shape is then defined by the function φ.  ... 
doi:10.1007/s10444-008-9104-5 fatcat:usvch4ax3ffy7fdlhabeukdzam

Category-Specific Object Recognition and Segmentation Using a Skeletal Shape Model

Nhon H. Trinh, Benjamin B. Kimia
2009 Procedings of the British Machine Vision Conference 2009  
coverage Ferrari TR08 − average precision Our method − average coverage Our method − average precision Figure 3: (a) Segmentation examples of the ETHZ dataset.  ...  to multiple contour points or by not matching the best edges to the contour points, Figure 2a .  ...  − average coverage Ferrari TR08 − average precision Our method − average coverage Our method − average precision Figure 3: (a) Segmentation examples of the ETHZ dataset.  ... 
doi:10.5244/c.23.6 dblp:conf/bmvc/TrinhK09 fatcat:4arj5xlxr5fwlppvbttlicba7u

Automated 3-D Segmentation of Lungs With Lung Cancer in CT Data Using a Novel Robust Active Shape Model Approach

Shanhui Sun, C. Bauer, R. Beichel
2012 IEEE Transactions on Medical Imaging  
First, a novel robust active shape model (RASM) matching method is utilized to roughly segment the outline of the lungs.  ...  The initial position of the RASM is found by means of a rib cage detection method.  ...  This work was supported in part by the Biological Sciences Funding Program of The University of Iowa.  ... 
doi:10.1109/tmi.2011.2171357 pmid:21997248 pmcid:PMC3657761 fatcat:7dpngpfpojc3den43oer7qokgm

Active Graph Matching for Automatic Joint Segmentation and Annotation of C. elegans [chapter]

Dagmar Kainmueller, Florian Jug, Carsten Rother, Gene Myers
2014 Lecture Notes in Computer Science  
In this work we present a novel technique we term active graph matching, which integrates the popular active shape model into a sparse graph matching problem.  ...  Furthermore with the help of the generalized Hough transform, we are able to jointly segment and annotate a large set of nuclei in a fully automatic fashion for the first time. 1 We work exclusively with  ...  We inpaint the missing nuclei shapes by assigning the shape of the closest not-annotated nucleus in the respective manual segmentation.  ... 
doi:10.1007/978-3-319-10404-1_11 fatcat:7vih7ufkf5bcznnhuuro34pg5a

Ventricle Registration for Inter-subject White Matter Lesion Analysis [chapter]

Cynthia Jongen, Jeroen van der Grond, Josien P. W. Pluim
2004 Lecture Notes in Computer Science  
To prevent false deformations of the lesions we non-rigidly register CSF segmentations to the average lateral ventricle image.  ...  A binary average image of the lateral ventricle system is used as a reference image for registration.  ...  All white matter lesion segmentations were transformed to the reference average ventricle shape by applying the transformations found for the CSF segmentation registration.  ... 
doi:10.1007/978-3-540-30135-6_87 fatcat:sf2vgbroevbn7ey2ylsbp2xsvy

Retrieving Matching CAD Models by Using Partial 3D Point Clouds

Cheuk Yiu Ip, Satyandra K. Gupta
2007 Computer-Aided Design and Applications  
Our approach involves segmenting the point cloud and CAD mesh models into surface patches.  ...  The next step is to identify corresponding surface patches in point clouds and CAD models that could potentially match.  ...  This research has been supported in part by NSF grant DMI0093142. Opinions expressed in this paper are those of authors and do not necessarily reflect opinion of the sponsors.  ... 
doi:10.1080/16864360.2007.10738497 fatcat:lgrgqr5dj5cphgvx6zgnknteza

Robust Structure-Based Shape Correspondence

Yanir Kleiman, Maks Ovsjanikov
2018 Computer graphics forum (Print)  
We generate simplified shape graphs by jointly decomposing the shapes, and devise an adapted graph-matching technique, from which we infer correspondences between shape regions.  ...  We demonstrate that the region-wise matching that we obtain can be used to find correspondences between feature points, reveal the intrinsic self-similarities of each shape, and even construct point-to-point  ...  Parts of this work were supported by the Chateaubriand Fellowship, Marie-Curie CIG-334283, a CNRS chaire d'excellence, chaire Jean Marjoulet from Ecole Polytechnique, FUI project TANDEM 2, a Google Focused  ... 
doi:10.1111/cgf.13389 fatcat:j52orbnwxrfhjn4ggwu2zw4tsm

Robust Structure-based Shape Correspondence [article]

Yanir Kleiman, Maks Ovsjanikov
2018 arXiv   pre-print
We generate simplified shape graphs by jointly decomposing the shapes, and devise an adapted graph-matching technique, from which we infer correspondences between shape regions.  ...  We demonstrate that the region-wise matching that we obtain can be used to find correspondences between feature points, reveal the intrinsic self-similarities of each shape, and even construct point-to-point  ...  Parts of this work were supported by the Chateaubriand Fellowship, Marie-Curie CIG-334283, a CNRS chaire d'excellence, chaire Jean Marjoulet from Ecole Polytechnique, FUI project TANDEM 2, a Google Focused  ... 
arXiv:1710.05592v2 fatcat:lywqcbydvrfbfdazufji3tulsi

Automatic Registration Method for Optical Remote Sensing Images with Large Background Variations Using Line Segments

Xiaolong Shi, Jie Jiang
2016 Remote Sensing  
As a result of the invariance of the main shape contours, correct line segment matches will have similar descriptors and can be obtained by cross-matching among the descriptors.  ...  Boundary curves were segmented from images, and equidistant key points could be obtained by sampling the curves.  ...  As the main shape contours are relatively stable, correct line matches could be obtained by cross-matching among their descriptors.  ... 
doi:10.3390/rs8050426 fatcat:v37vwbfzt5bvto3d5avs5q3fxm

A Novel Liver Perfusion Analysis Based on Active Contours and Chamfer Matching [chapter]

Gang Chen, Lixu Gu
2006 Lecture Notes in Computer Science  
single shape prior.  ...  matching algorithm, and finally a refined intensity curve without respiration affection can be achieved.  ...  From left to right are: hit edge pixels; complete liver shape by connecting hit edge pixels; segmented liver by our method using level set method to smooth; segmented liver by FMM+Levle Set Method. segmentation  ... 
doi:10.1007/11812715_14 fatcat:uheoaurivnh4very2mgb2spbmy

Segmenting Articulated Structures by Hierarchical Statistical Modeling of Shape, Appearance, and Topology [chapter]

Rok Bernard, Boštjan Likar, Franjo Pernu
2001 Lecture Notes in Computer Science  
Acknowledgements This work was supported by the Ministry of Science and Technology of the Republic of Slovenia under grant J2-0659-1538 and by the IST-1999-12338 project, funded by the European Commission  ...  The resulting RMS errors were on the average 2.2 pixels, while the initial RMS error ranged on the average from 5.5-7.5 pixels.  ...  When segmenting a given image, the anatomically plausible configuration of the models is searched for in coarse and fine matching steps.  ... 
doi:10.1007/3-540-45468-3_60 fatcat:4z7sdhvq3ja33pledehfg2irhu

Face Analysis Using Curve Edge Maps [chapter]

Francis Deboeverie, Peter Veelaert, Wilfried Philips
2011 Lecture Notes in Computer Science  
When applied to different face databases and video sequences, the average face recognition rate is 95.51%, the average facial feature detection rate is 91.92% and the accuracy in location of the facial  ...  In this approach, faces are represented with Curve Edge Maps, which are collections of polynomial segments with a convex region.  ...  The task of facial analysis has generally been addressed by algorithms that use shape and texture modelling. The Active Shape Model (ASM), proposed by Cootes et. al.  ... 
doi:10.1007/978-3-642-24088-1_12 fatcat:bkznahgbe5fjnjhlgcbgpehnem
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