Results 261 to 270 of about 3,793,481 (295)

Model-based 2D-Shape Recovery

1995
The paper presents a new approach for the reconstruction of polygons using local and global constraints. The MDL-based solution is shown to be useful for analysing range and image data of buildings.
Ansgar Brunn, Uwe Weidner, Wolfgang Förstner   +2 more
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Shape Recovery by Diffusion Generated Motion

Journal of Visual Communication and Image Representation, 2002
Diffusion generated motion has been used to generate a variety of interface motions. In this paper, we present a new shape recovery model with diffusion generated motion. The approach is based on alternately diffusing and sharpening the initial region to move the sharp interface toward the boundaries of the desired objects.
Björn D. Jawerth, Peng Lin
openaire   +2 more sources

A Shape Memory Polymer with Improved Shape Recovery

MRS Proceedings, 2004
ABSTRACTThermally actuated shape memory polymers (SMPs) interest, both academically and industrially, due to their ability to memorize a permanent shape that is set during processing and a temporary shape that is later programmed by manipulation above a critical temperature, either Tg or Tm.
Changdeng Liu, Patrick T. Mather
openaire   +1 more source

Polyhedral shape recovery based on interrefiections

1997
We discuss the uniqueness of 3-D shape recovery of a polyhedron from a single shaded image. First, we analytically show that multiple convex (and concave) shape solutions usually exist for a simple polyhedron if interreflections are not considered.
Jun Yang, Dili Zhang, Noboru Ohnishi, Noboru Sugie   +3 more
openaire   +2 more sources

Shape recovery methods for visual inspection

[1992] Proceedings IEEE Workshop on Applications of Computer Vision, 2003
The advancement of three-dimensional machine vision is closely related to the development of robust and efficient shape recovery methods. The author addresses the recovery problem associated with three different classes of surfaces: (a) specular surfaces; (b) surfaces with varying reflectance; and (c) rough and textured surfaces. Three realtime machine
openaire   +1 more source

Shape recovery of anisotropic metal surfaces

Journal of the Optical Society of America A, 2009
A method to recover the shape of metallic surfaces that have a directional microstructure is demonstrated. A simple model that shows how surface radiance varies with the azimuth of the light source is described and verified on real surfaces. The model predicts that if a light source is revolved around a flat facet then two peaks in radiance will be ...
openaire   +2 more sources

Shape Recovery from Turntable Image Sequence

2007
This paper makes use of both feature points and silhouettes to deliver fast 3D shape recovery from a turntable image sequence. The algorithm exploits object silhouettes in two views to establish a 3D rim curve, which is defined with respect to the two frontier points arising from two views.
Sze, WF, Zhong, H, Lau, WS, Hung, YS
openaire   +2 more sources

A 3D Shape Descriptor for Human Pose Recovery

2008
no ...
Laetitia Gond, Patrick Sayd, Thierry Chateau, Michel Dhome   +3 more
openaire   +3 more sources

Shape Recovery from Polarization: A Review

Proceedings of the 15th International Conference on Digital Image Processing, 2023
Zhiying Tan, Yan Ji, Weifeng Kong, Xu Tao, Wenbo Fan, Jinying Zhao, Xiaobin Xu 0003, Minzhou Luo   +7 more
openaire   +1 more source

ON SHAPE RECOVERY FROM TWO SHADING PATTERNS

International Journal of Pattern Recognition and Artificial Intelligence, 1992
In this paper, we analyze the problem of recovering the shape of a smooth Lambertian surface from two images obtained by consecutive illumination of the surface by distant point light-sources from two different directions. We discuss the issues of existence and uniqueness of solutions to the corresponding system of two first-order non-linear partial ...
openaire   +2 more sources