Abstract:
We present Sweepers, a new class of space deformations suitable for interactive virtual sculpture. The artist describes a basic deformation as a path through which a tool...Show MoreMetadata
Abstract:
We present Sweepers, a new class of space deformations suitable for interactive virtual sculpture. The artist describes a basic deformation as a path through which a tool is moved. Our tools are simply shapes, subsets of 3D space. So we can use shapes already created as customized tools to make more complex shapes or to simplify the modeling process. When a tool is moved it causes a deformation of the working shape along the path of the tool. This is in accordance with a clay modeling metaphor and easy to understand and predict. More complicated deformations are achieved by using several tools simultaneously in the same region. It is desirable that deformations for modeling are 'foldover-free' that is part of deformed space cannot overlap so that the deformations are reversible. There are good intuitive reasons to believe that our deformations are foldover-free but we have not yet completed a proof. We have an efficient formulation for a single tool following a simple path (translation, scaling or rotation) and we can demonstrate the effects of multiple tools used simultaneously. For representing shapes, we present a mesh refinement and decimation algorithm that takes advantage of the definition of our deformations. The prototype implementation described has been used to create a variety of models quickly and conveniently.
Published in: Proceedings Shape Modeling Applications, 2004.
Date of Conference: 07-09 June 2004
Date Added to IEEE Xplore: 04 October 2004
Print ISBN:0-7695-2075-8
Citations are not available for this document.
Contents Cites in Patents (5)Patent Links Provided by 1790 Analytics
1.
Tabota, Evgeniy; Dmitriev, Oleg, "Method for using a computer graphics system for changing the shape of the surface of models of geometric solids with the aid of deformation and device for implementing same"
Inventors:
Tabota, Evgeniy; Dmitriev, Oleg
Abstract:
The proposed method for using a computer graphics system for changing the shape of models of geometric solids with the aid of deformation is characterized in that it is used for producing geometric solids which mate with one another as they were relative to one another and have mating surfaces, which require manufacture with precision accuracy (up to 10 micrometers), for example toothed screws (cylindrical, conical) of a screw compressor unit, gear trains, gears of a gear pump and similar mating pairs of geometric solids. The proposed method consists in that deformation of a model (3) of a semifinished product (3) of a first mating solid (1) is performed with the aid of a model (7) of a first tool (7), whose surface is automatically calculated using several mathematical laws, each of which is a polynomial in which at least one of the coefficients represents one of several characteristics defining the geometry of the shape of the surface of the second geometric solid (2). Deformation of a model (4) of a semifinished product (4) of a second mating solid (2) is performed with the aid of a model (10) of a second tool (10), which represents a deformed target model (8) of the first solid (1). Furthermore, said deformation is performed in accordance with a law for a movement imitating the movement of the geometric solids (1), (2) which mate with one another during use relative to one another. The proposed device is capable of implementing the proposed method.
Assignee:
VERT ROTORS UK LTD
Filing Date:
06 June 2013
Grant Date:
01 May 2018
Patent Classes:
Current International Class:
G06T0192000000, G06T0170000000, G06T0171000000
2.
TABOTA, Evgeniy; DMITRIEV, Oleg, "METHOD FOR USING A COMPUTER GRAPHICS SYSTEM FOR CHANGING THE SHAPE OF THE SURFACE OF MODELS OF GEOMETRIC SOLIDS WITH THE AID OF DEFORMATION AND DEVICE FOR IMPLEMENTING SAME"
Inventors:
TABOTA, Evgeniy; DMITRIEV, Oleg
Abstract:
The proposed method for using a computer graphics system for changing the shape of models of geometric solids with the aid of deformation is characterized in that it is used for producing geometric solids which mate with one another as they were relative to one another and have mating surfaces, which require manufacture with precision accuracy (up to 10 micrometres), for example toothed screws (cylindrical, conical) of a screw compressor unit, gear trains, gears of a gear pump and similar mating pairs of geometric solids. The proposed method consists in that deformation of a model (3) of a semifinished product (3) of a first mating solid (1) is performed with the aid of a model (7) of a first tool (7), whose surface is automatically calculated using several mathematical laws, each of which is a polynomial in which at least one of the coefficients represents one of several characteristics defining the geometry of the shape of the surface of the second geometric solid (2). Deformation of a model (4) of a semifinished product (4) of a second mating solid (2) is performed with the aid of a model (10) of a second tool (10), which represents a deformed target model (8) of the first solid (1). Furthermore, said deformation is performed in accordance with a law for a movement imitating the movement of the geometric solids (1), (2) which mate with one another during use relative to one another. The proposed device is capable of implementing the proposed method.
Assignee:
VERT ROTORS UK LTD
Filing Date:
06 June 2013
Grant Date:
11 December 2014
Patent Classes:
Current International Class:
G06T0170000000, G06T0192000000
3.
Baran, Ilya; Harris, Scott; Saksonov, Lana; Rothstein, Saul; Zuffante, Robert, "DEFORMATION OF A COMPUTER GENERATED MODEL"
Inventors:
Baran, Ilya; Harris, Scott; Saksonov, Lana; Rothstein, Saul; Zuffante, Robert
Abstract:
Deforming a three-dimensional computer-generated model to cause a change of shape of the three-dimensional model includes representing a surface of the model using a surface representation initially comprised of an original surface definition, deriving smooth three-dimensional mapping functions where each mapping function defines a deformation to the surface and at least one mapping function is non-affine, constructing a composition of the mapping functions and the original surface definition where each mapping function is included in the composition in succession in accordance with the order of derivation, and applying the composition after each successive mapping function is included in the composition causing the surface of the three-dimensional model to be deformed while preserving the smoothness to the lowest degree of smoothness of the mapping functions.
Assignee:
DASSAULT SYSTEMES SOLIDWORKS CORP
Filing Date:
14 July 2005
Grant Date:
03 May 2011
Patent Classes:
Current U.S. Class:
345420000, 345423000, 345616000, 345646000
Current International Class:
G06T0170000, G06T0153000, G09G0050000
4.
HEESEMANS, Michael; DESTURA, Galileo, J.; VAN DE VEN, Ramon, E., F., "METHOD OF ENABLING TO MODEL VIRTUAL OBJECTS"
Inventors:
HEESEMANS, Michael; DESTURA, Galileo, J.; VAN DE VEN, Ramon, E., F.
Abstract:
A data processing system has a display monitor for rendering a virtual object, and a touch screen for enabling a user to interact with the object rendered. The system is operative to enable the user to modify a shape of the object at a first location on the object. The shape is modified under control of a magnitude of a pressure registered at a second location on the touch screen substantially coinciding with the first location when viewed through the touch screen in operational use of the system.
Assignee:
KONINKLIJKE PHILIPS ELECTRONICS N V,
INDIVIDUAL PATENTER,
Filing Date:
21 July 2005
Grant Date:
09 February 2006
Patent Classes:
Current International Class:
G06F0030480000, G06K0110000000
5.
Baran, Ilya; Harris, Scott; Saksonov, Lana; Zuffante, Robert; Rothstein, Saul, "Deformation of a computer-generated model"
Inventors:
Baran, Ilya; Harris, Scott; Saksonov, Lana; Zuffante, Robert; Rothstein, Saul
Abstract:
Deforming a three-dimensional computer-generated model to cause a change of shape of the three-dimensional model includes representing a surface of the model using a surface representation initially comprised of an original surface definition, deriving smooth three-dimensional mapping functions where each mapping function defines a deformation to the surface and at least one mapping function is non-affine, constructing a composition of the mapping functions and the original surface definition where each mapping function is included in the composition in succession in accordance with the order of derivation, and applying the composition after each successive mapping function is included in the composition causing the surface of the three-dimensional model to be deformed while preserving the smoothness to the lowest degree of smoothness of the mapping functions.![]()
Assignee:
SOLIDWORKS CORP
Filing Date:
18 July 2005
Grant Date:
01 February 2006
Patent Classes:
Current International Class:
G06T0174000000
