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Showing results for quadric
Your search for quadrica retrieved no results
3D point cloud lossy compression using quadric surfaces.
Imdad U, Tahir Ahmed M, Asif M, Aljuaid H. Imdad U, et al. PeerJ Comput Sci. 2021 Oct 6;7:e675. doi: 10.7717/peerj-cs.675. eCollection 2021. PeerJ Comput Sci. 2021. PMID: 34712788 Free PMC article.
The idea presented in this research exploits geometric information of the scene by using quadric surface representation of the point cloud. A region of a point cloud can be represented by the coefficients of quadric surface when the boundary conditions are known. Th …
The idea presented in this research exploits geometric information of the scene by using quadric surface representation of the point …
Supporting quadric method for designing refractive optical elements generating prescribed irradiance distributions and wavefronts.
Bykov DA, Doskolovich LL, Byzov EV, Bezus EA, Kazanskiy NL. Bykov DA, et al. Opt Express. 2021 Aug 16;29(17):26304-26318. doi: 10.1364/OE.432770. Opt Express. 2021. PMID: 34615068 Free article.
We propose a method for designing a refractive optical element with two working surfaces transforming an incident beam with a plane wavefront into an output beam with prescribed irradiance distribution and a non-planar wavefront. The presented method generalizes the supporting …
We propose a method for designing a refractive optical element with two working surfaces transforming an incident beam with a plane wavefron …
A generalized anisotropic quadric yield criterion and its application to bone tissue at multiple length scales.
Schwiedrzik JJ, Wolfram U, Zysset PK. Schwiedrzik JJ, et al. Biomech Model Mechanobiol. 2013 Nov;12(6):1155-68. doi: 10.1007/s10237-013-0472-5. Epub 2013 Feb 15. Biomech Model Mechanobiol. 2013. PMID: 23412886
Nonlinear computational analysis of materials showing elasto-plasticity or damage relies on knowledge of their yield behavior and strengths under complex stress states. In this work, a generalized anisotropic quadric yield criterion is proposed that is homogeneous of degre …
Nonlinear computational analysis of materials showing elasto-plasticity or damage relies on knowledge of their yield behavior and strengths …
Generic Primitive Detection in Point Clouds Using Novel Minimal Quadric Fits.
Birdal T, Busam B, Navab N, Ilic S, Sturm P. Birdal T, et al. IEEE Trans Pattern Anal Mach Intell. 2020 Jun;42(6):1333-1347. doi: 10.1109/TPAMI.2019.2900309. Epub 2019 Feb 19. IEEE Trans Pattern Anal Mach Intell. 2020. PMID: 30794508
Moreover, quadrics allow us to model higher degree of freedom shapes, such as hyperboloids or paraboloids that could be used in non-rigid settings. We begin by contributing two novel quadric fits targeting 3D point sets that are endowed with tangent space informatio …
Moreover, quadrics allow us to model higher degree of freedom shapes, such as hyperboloids or paraboloids that could be used in non-r …
Femoral curvature variability in modern humans using three-dimensional quadric surface fitting.
Chapman T, Sholukha V, Semal P, Louryan S, Rooze M, Van Sint Jan S. Chapman T, et al. Surg Radiol Anat. 2015 Dec;37(10):1169-77. doi: 10.1007/s00276-015-1495-7. Epub 2015 Jun 4. Surg Radiol Anat. 2015. PMID: 26040401
INTRODUCTION: This study analysed femoral curvature in a population from Belgium in conjunction with other morphological characteristics by the use of three-dimensional (3D) quadric surfaces (QS) modelled from the bone surface. METHODS: 3D models were created from computed …
INTRODUCTION: This study analysed femoral curvature in a population from Belgium in conjunction with other morphological characteristics by …
On the use of the supporting quadric method in the problem of designing double freeform surfaces for collimated beam shaping.
Mingazov AA, Bykov DA, Bezus EA, Doskolovich LL. Mingazov AA, et al. Opt Express. 2020 Jul 20;28(15):22642-22657. doi: 10.1364/OE.398990. Opt Express. 2020. PMID: 32752521 Free article.
We propose a version of the supporting quadric method for calculating a refractive optical element with two working surfaces for collimated beam shaping. ...
We propose a version of the supporting quadric method for calculating a refractive optical element with two working surfaces for coll …
[Recurrent quadric paralysis in an 11-year-old girl with spinal tuberculosis].
Mpemba Loufoua-Lemay AB, Ndamba Bandzouzi B, Makosso E, Etokabeka-Nkanta FW, Nzingoula S. Mpemba Loufoua-Lemay AB, et al. Arch Pediatr. 2007 Mar;14(3):266-9. doi: 10.1016/j.arcped.2006.12.012. Epub 2007 Jan 26. Arch Pediatr. 2007. PMID: 17258438 French.
The authors report a recurring quadric paralysis in a 11-year-old girl with cervical, pulmonary and mediastinal tuberculosis. ...The spontaneous motility was observed at 37 days of treatment. However, at the 8th months of this treatment, quadric paralysis happened a …
The authors report a recurring quadric paralysis in a 11-year-old girl with cervical, pulmonary and mediastinal tuberculosis. ...The …
The Study Variety of Conformal Kinematics.
Kalkan B, Li Z, Schröcker HP, Siegele J. Kalkan B, et al. Adv Appl Clifford Algebr. 2022;32(4):44. doi: 10.1007/s00006-022-01227-x. Epub 2022 Jul 18. Adv Appl Clifford Algebr. 2022. PMID: 35873187 Free PMC article.
The Study variety is a projective variety of dimension ten and degree twelve in real projective space of dimension 15, and it generalizes the well-known Study quadric model of rigid body kinematics. Despite its high dimension, co-dimension, and degree it is amenable to con …
The Study variety is a projective variety of dimension ten and degree twelve in real projective space of dimension 15, and it generalizes th …
198 results