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Object Centered Stereo: Displacement Map Estimation Using Texture and Shading

Neil Birkbeck, Dana Cobzas, Martin Jagersand
2006 Third International Symposium on 3D Data Processing, Visualization, and Transmission (3DPVT'06)  
We consider the problem of recovering 3D surface displacements using both shading and multi-view stereo cues.  ...  Although displacement mapping requires a base surface, this base mesh is easily obtained using traditional computer vision techniques (e.g., shape-from-silhouette or structure-from-motion).  ...  For our case, as the cost function is based on shading and uses the surface normals, we chose a continuous representation where the normals are implied by the surface.  ... 
doi:10.1109/3dpvt.2006.102 dblp:conf/3dpvt/BirkbeckCJ06 fatcat:7fufstwjnvfjvlkwcplitarway

Dynamic Catmull-Clark subdivision surfaces

Hong Qin, C. Mandal, B.C. Vemuri
1998 IEEE Transactions on Visualization and Computer Graphics  
Our new dynamic surface model inherits the attractive properties of the Catmull-Clark subdivision scheme, as well as those of the physics-based models.  ...  In this paper, we present a new dynamic surface model based on the Catmull-Clark subdivision scheme, a popular technique for modeling complicated objects of arbitrary genus.  ...  subdivision surface-based modeling schemes.  ... 
doi:10.1109/2945.722296 fatcat:7wa7vhcukzb5xc6oxkl7uh3gd4

A Power-Area Efficient Geometry Engine With Low-Complexity Subdivision Algorithm for 3-D Graphics System

Lan-Da Van, Ten-Yao Sheu
2011 IEEE Transactions on Circuits and Systems Part 1: Regular Papers  
In this paper, a power-area efficient geometry engine (GE) using a low-complexity three-level subdivision algorithm is presented.  ...  The proposed subdivision algorithm and architecture is capable of providing low complexity, high power-area efficiency, scalable and near-Phong shading quality.  ...  Edge Function Recovery Scheme In order to remove the rasterization anomaly, a recovery scheme based on the edge function method [19] is employed, where the edge function method is used in some raster  ... 
doi:10.1109/tcsi.2011.2123430 fatcat:fmjavf3a75cufpy4qtse4ujcgu

Crusta: A new virtual globe for real-time visualization of sub-meter digital topography at planetary scales

Tony Bernardin, Eric Cowgill, Oliver Kreylos, Christopher Bowles, Peter Gold, Bernd Hamann, Louise Kellogg
2011 Computers & Geosciences  
We designed Crusta to be dynamic with the shading of the terrain surface computed on-the-fly when a user manipulates his point-of-view.  ...  This polyhedron defines 30 "base patches," each being a four-sided region that can be subdivided to an arbitrarily fine grid on the surface of the globe to accommodate input data of arbitrary resolution  ...  Keeping with the objective of flexibility and interactive performance of the representation, we chose a simpler approach based on the recursive subdivision of base patches.  ... 
doi:10.1016/j.cageo.2010.02.006 fatcat:iw42hei6kngothb34lcgt4a4ra

Wavelet-based Light Reconstruction from a Single Image

Cameron Upright, Dana Cobzas, Martin Jagersand
2007 Fourth Canadian Conference on Computer and Robot Vision (CRV '07)  
In this paper we propose a wavelet-based light representation. This representation is used for recovering illumination and reflectance of a scene with known geometry from a single calibrated image.  ...  In addition to illumination estimation our algorithm also estimates a Phong surface reflection. Experiments with synthetic and real scenes demonstrate the effectiveness of our method.  ...  We propose a wavelet-based light representation and an image-based illumination recovery algorithm suitable for scenes with complex light and reflectance.  ... 
doi:10.1109/crv.2007.70 dblp:conf/crv/UprightCJ07 fatcat:e7oyahisbbeqfkkjwvnvuvcjde

B-rep SE: Simplicially Enhanced Boundary Representation [article]

M. Freytag, V. Shapiro
2004 Solid Modeling  
Boundary representation (B-rep) is a popular representation scheme for mechanical objects due to its ability to accurately represent piecewise smooth surfaces bounding solids.  ...  However, non-trivial topology and geometry of the surface patches hinder point generation, classification, searching, and other algorithms.  ...  On the right is another flat-shaded mesh of the same geometry adaptively subdivided based on geometric error.  ... 
doi:10.2312/sm.20041386 fatcat:4trkhkqovvcbjkewskmkiciyle

Dynamic modeling of butterfly subdivision surfaces

C. Mandal, H. Qin, B.C. Vemuri
2000 IEEE Transactions on Visualization and Computer Graphics  
generated by the (modified) butterfly scheme using physics-based ªforceº tools.  ...  This procedure-based surface model obtained through butterfly subdivision does not have a closed-form analytic formulation (unlike other well-known spline-based models) and, hence, poses challenging problems  ...  subdivision surface-based modeling schemes.  ... 
doi:10.1109/2945.879787 fatcat:ghggi3anb5gqdjuyddqo4eouv4

Local Spherical Harmonics for Facial Shape and Albedo Estimation

Suwoong Heo, Hyewon Song, Jiwoo Kang, Sanghoon Lee
2020 IEEE Access  
[14] proposed a linear SfS method based on mesh deformation using a surface Laplacian.  ...  In [27] , the linear representation of the 3DMM was transformed into a nonlinear representation using a deep neural network.  ...  Example results for albedo and shading estimation with (K = 100, 200) or without (K = 1) using the local SH lighting method.  ... 
doi:10.1109/access.2020.3026545 fatcat:cudfupva7bcwjawlih2xjf7kau

Page 3976 of Mathematical Reviews Vol. , Issue 91G [page]

1991 Mathematical Reviews  
These transformations are used for defining the solid pavings, which have interesting proper- ties for modeling the subdivisions of three-dimensional Euclidean space.” 91g:68168 68U10 22E99 68T10 92C55  ...  First, the author here treats the problems of shape from motion, which is the problem of detecting the surface and motion parameters of a planar surface from a sequence of its images.  ... 

Piecewise smooth surface reconstruction

Hugues Hoppe, Tony DeRose, Tom Duchamp, Mark Halstead, Hubert Jin, John McDonald, Jean Schweitzer, Werner Stuetzle
1994 Proceedings of the 21st annual conference on Computer graphics and interactive techniques - SIGGRAPH '94  
A key ingredient in the method, and a principal contribution of this paper, is the introduction of a new class of piecewise smooth surface representations based on subdivision.  ...  These surfaces have a number of properties that make them ideal for use in surface reconstruction: they are simple to implement, they can model sharp features concisely, and they can be fit to scattered  ...  Acknowledgments We wish to thank the Ford Motor Co. for providing the cross section data, Technical Arts Co. for the laser range data, Rob Sharein for the swept surface, and Pratt & Whitney for the dense  ... 
doi:10.1145/192161.192233 dblp:conf/siggraph/HoppeDDHJMSS94 fatcat:jgnegbyzx5fohn3nlpy2uu64my

Efficient polygonization of CSG solids using boundary tracking

Chung-Wen Chung, Jung-Hong Chuang, Pei-Huan Chou
1997 Computers & graphics  
The surface*dge intersections and vertex normals are computed directly from the exact boundary surfaces of the CSG solid.  ...  In this paper, we propose a procedure that directly polygonizes the boundary surface of CSG solids.  ...  Such applications often utilize shading hardware commonly found in modern workstations and hence require polygonal representation of the 3-D environment.  ... 
doi:10.1016/s0097-8493(97)00053-8 fatcat:6a2qw7hsobcvblu44357pcze2u

Multiresolution analysis for surfaces of arbitrary topological type

Michael Lounsbery, Tony D. DeRose, Joe Warren
1997 ACM Transactions on Graphics  
In this article, we present a new class of wavelets, based on subdivision surfaces, that radically extends the class of representable functions.  ...  Wavelet representations have been used in a broad range of applications, including image compression, physical simulation, and numerical analysis.  ...  global illumination-all naturally implemented using the same underlying surface wavelet representation.  ... 
doi:10.1145/237748.237750 fatcat:mxlign3or5glhaiqojlpqevjty

Integration of active and passive sensing techniques for representing three-dimensional objects

Y.F. Wang, J.K. Aggarwal
1989 IEEE Transactions on Robotics and Automation  
The reasons for using an intermediate representation based on triangulation is, first, we think a triangular surface approximation presents a good trade-off between high and low level representations and  ...  A hierarchical quadtree representation of the surface patches is used for the surface segments from each view.  ... 
doi:10.1109/70.88061 fatcat:qbpmsucx6rd4fdqwpjhsmjn5ui

Shape Reconstruction from 3D and 2D Data Using PDE-Based Deformable Surfaces [chapter]

Ye Duan, Liu Yang, Hong Qin, Dimitris Samaras
2004 Lecture Notes in Computer Science  
In this paper, we propose a new PDE-based methodology for deformable surfaces that is capable of automatically evolving its shape to capture the geometric boundary of the data and simultaneously discover  ...  Unlike the level-set approach, our model always has an explicit representation of geometry and topology.  ...  Introduction During the past decade, PDE-driven surface evolution has become very popular in the computer vision community for shape recovery and object detection.  ... 
doi:10.1007/978-3-540-24672-5_19 fatcat:ahsqmu7fbjbqhagdwncayr3oti

Shading-based surface editing

Yotam Gingold, Denis Zorin
2008 ACM SIGGRAPH 2008 papers on - SIGGRAPH '08  
We present a system for free-form surface modeling that allows a user to modify a shape by changing its rendered, shaded image using stroke-based drawing tools.  ...  A new shape, whose rendered image closely approximates user input, is computed using an efficient and stable surface optimization procedure.  ...  Most work on shading-based surface recovery operates on height fields; that is, the surface is allowed to move only in the view direction.  ... 
doi:10.1145/1399504.1360694 fatcat:5ubl6ewi3jgc7pb2cgzwsfmwny
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