000 05270nam a22005535i 4500
001 978-3-031-01819-0
003 DE-He213
005 20240730163434.0
007 cr nn 008mamaa
008 220601s2017 sz | s |||| 0|eng d
020 _a9783031018190
_9978-3-031-01819-0
024 7 _a10.1007/978-3-031-01819-0
_2doi
050 4 _aTA1501-1820
050 4 _aTA1634
072 7 _aUYT
_2bicssc
072 7 _aCOM016000
_2bisacsh
072 7 _aUYT
_2thema
082 0 4 _a006
_223
100 1 _aJermyn, Ian H.
_eauthor.
_4aut
_4http://id.loc.gov/vocabulary/relators/aut
_978529
245 1 0 _aElastic Shape Analysis of Three-Dimensional Objects
_h[electronic resource] /
_cby Ian H. Jermyn, Sebastian Kurtek, Hamid Laga, Anuj Srivastava.
250 _a1st ed. 2017.
264 1 _aCham :
_bSpringer International Publishing :
_bImprint: Springer,
_c2017.
300 _aXV, 169 p.
_bonline resource.
336 _atext
_btxt
_2rdacontent
337 _acomputer
_bc
_2rdamedia
338 _aonline resource
_bcr
_2rdacarrier
347 _atext file
_bPDF
_2rda
490 1 _aSynthesis Lectures on Computer Vision,
_x2153-1064
505 0 _aPreface -- Acknowledgments -- Problem Introduction and Motivation -- Elastic Shape Analysis: Metrics and Representations -- Computing Geometrical Quantities -- Statistical Analysis of Shapes -- Case Studies Using Human Body and Anatomical Shapes -- Landmark-driven Elastic Shape Analysis -- Bibliography -- Authors' Biographies .
520 _aStatistical analysis of shapes of 3D objects is an important problem with a wide range of applications. This analysis is difficult for many reasons, including the fact that objects differ in both geometry and topology. In this manuscript, we narrow the problem by focusing on objects with fixed topology, say objects that are diffeomorphic to unit spheres, and develop tools for analyzing their geometries. The main challenges in this problem are to register points across objects and to perform analysis while being invariant to certain shape-preserving transformations. We develop a comprehensive framework for analyzing shapes of spherical objects, i.e., objects that are embeddings of a unit sphere in #x211D;, including tools for: quantifying shape differences, optimally deforming shapes into each other, summarizing shape samples, extracting principal modes of shape variability, and modeling shape variability associated with populations. An important strength of this frameworkis that it is elastic: it performs alignment, registration, and comparison in a single unified framework, while being invariant to shape-preserving transformations. The approach is essentially Riemannian in the following sense. We specify natural mathematical representations of surfaces of interest, and impose Riemannian metrics that are invariant to the actions of the shape-preserving transformations. In particular, they are invariant to reparameterizations of surfaces. While these metrics are too complicated to allow broad usage in practical applications, we introduce a novel representation, termed square-root normal fields (SRNFs), that transform a particular invariant elastic metric into the standard L² metric. As a result, one can use standard techniques from functional data analysis for registering, comparing, and summarizing shapes. Specifically, this results in: pairwise registration of surfaces; computation of geodesic paths encoding optimal deformations; computation of Karcher means and covariances under the shape metric; tangent Principal Component Analysis (PCA) and extraction of dominant modes of variability; and finally, modeling of shape variability using wrapped normal densities. These ideas are demonstrated using two case studies: the analysis of surfaces denoting human bodies in terms of shape and pose variability; and the clustering and classification of the shapes of subcortical brain structures for use in medical diagnosis. This book develops these ideas without assuming advanced knowledge in differential geometry and statistics. We summarize some basic tools from differential geometry in the appendices, and introduce additional concepts and terminology as needed in the individual chapters.
650 0 _aImage processing
_xDigital techniques.
_94145
650 0 _aComputer vision.
_978530
650 0 _aPattern recognition systems.
_93953
650 1 4 _aComputer Imaging, Vision, Pattern Recognition and Graphics.
_931569
650 2 4 _aComputer Vision.
_978531
650 2 4 _aAutomated Pattern Recognition.
_931568
700 1 _aKurtek, Sebastian.
_eauthor.
_4aut
_4http://id.loc.gov/vocabulary/relators/aut
_978532
700 1 _aLaga, Hamid.
_eauthor.
_4aut
_4http://id.loc.gov/vocabulary/relators/aut
_978533
700 1 _aSrivastava, Anuj.
_eauthor.
_4aut
_4http://id.loc.gov/vocabulary/relators/aut
_978534
710 2 _aSpringerLink (Online service)
_978535
773 0 _tSpringer Nature eBook
776 0 8 _iPrinted edition:
_z9783031006913
776 0 8 _iPrinted edition:
_z9783031029479
830 0 _aSynthesis Lectures on Computer Vision,
_x2153-1064
_978536
856 4 0 _uhttps://doi.org/10.1007/978-3-031-01819-0
912 _aZDB-2-SXSC
942 _cEBK
999 _c84605
_d84605