Results 21 to 30 of about 5,022,266 (266)
International Journal of Advanced Robotic Systems, 2018 Two linear calibration methods based on space-line projection properties for a paracatadioptric camera are presented. Considering the central catadioptric system, a straight line is projected into a circle on the viewing spherical surface for the first ...
Yuanzhen Li, Yue Zhao
doaj +1 more source
A weighted local‐spherical grid based lightweight descriptor for 3D point cloud registration
The Journal of Engineering, 2023 Establishing effective feature descriptors is a crucial step in 3D point cloud registration task. Existing manual‐based methods are noise‐susceptible and time‐consuming when running on low‐cost edge computing devices.
Shou‐Quan Che +2 more
doaj +1 more source
On normals and projection operators for surfaces defined by point sets
, 2022 S.150-155Levin's MLS projection operator allows defining a surface from a set of points and represents a versatile procedure to generate points on this surface.
Adamson, A., Alexa, M.
core +1 more source
Orthogonal distance fitting of precision free form surfaces based on l1 norm [PDF]
, 2008 Precision free-form surfaces are widely used in advanced optical and mechanical devices. In order to evaluate the form quality of a free-form surface, it is required to fit the measurement data with the design template and compare the relative deviation ...
Zhang, Xiangchao +2 more
core +5 more sources
The Influence of Temperature on Anisotropic Wettability Revealed by Friction Force Measurement
Biomimetics, 2023 Anisotropic surfaces with special wettability under various temperatures are of both fundamental interest and practical importance in many fields. However, little attention has been paid to the surfaces at temperatures between room temperature and the ...
Zhen Lin +6 more
doaj +1 more source
Mathematics, 2018 Orthogonal projection a point onto a parametric curve, three classic first order algorithms have been presented by Hartmann (1999), Hoschek, et al. (1993) and Hu, et al. (2000) (hereafter, H-H-H method). In this research, we give a proof of the approach&#
Juan Liang +5 more
doaj +1 more source
Leidenfrost boiling of water droplet
EPJ Web of Conferences, 2017 The investigations concerned a large water droplet at the heating surface temperature above the Leidenfrost point. The heating cylinder was the main component of experimental stand on which investigations were performed. The measurement system was placed
Orzechowski Tadeusz
doaj +1 more source
Proceedings of the 11th Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, 2016 Representing the shape of finite point sets in 2D by simple polygons becomes a challenge if the resulting outline needs to be non-convex and straight with only few, distinct edges and angles. Such outlines are usually sought in order to border point sets that originate from man-made objects, e.g., for the purpose of building reconstruction ...
Melanie Pohl, Dirk Feldmann
openaire +1 more source
Leidenfrost evaporation of water droplet
MATEC Web of Conferences, 2018 The present paper examines the behaviour of a single large droplet levitating over a hot surface, unsteady mass of the droplet, and heat transfer. It was assumed that the evaporation from the upper surface of the droplet is negligibly small compared with
Orzechowski Tadeusz
doaj +1 more source
Geometric approaches to establish the fundamentals of Lorentz spaces $\mathbb{R}_2^3$ and $\mathbb{R}_1^2$ [PDF]
Mathematica BohemicaThe aim of this paper is to investigate the orthogonality of vectors to each other and the Gram-Schmidt method in the Minkowski space $\mathbb{R}_2^3$.
Sevilay Çoruh Şenocak, Salim Yüce
doaj +1 more source