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1. WO2021010963 - OFFSET OPERATORS

Publication Number WO/2021/010963
Publication Date 21.01.2021
International Application No. PCT/US2019/041810
International Filing Date 15.07.2019
IPC
G06F 30/20 2020.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
30Computer-aided design
20Design optimisation, verification or simulation
G06F 113/10 2020.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
113Details relating to the application field
10Additive manufacturing, e.g. 3D printing
G06T 17/00 2006.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
173D modelling for computer graphics
B29C 64/386 2017.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
30Auxiliary operations or equipment
386Data acquisition or data processing for additive manufacturing
CPC
B22F 10/28
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
10Additive manufacturing of workpieces or articles from metallic powder
20Direct sintering or melting
28Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 10/80
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
10Additive manufacturing of workpieces or articles from metallic powder
80Data acquisition or data processing
B29C 64/386
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
30Auxiliary operations or equipment
386Data acquisition or data processing for additive manufacturing
B33Y 50/00
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
50Data acquisition or data processing for additive manufacturing
G06F 2113/10
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
2113Details relating to the application field
10Additive manufacturing, e.g. 3D printing
G06F 30/20
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
30Computer-aided design [CAD]
20Design optimisation, verification or simulation
Applicants
  • HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. [US]/[US]
Inventors
  • GONZALEZ MARTIN, Sergio
  • CARRUESCO LLORENS, Alex
  • GONZALEZ ROGEL, Jordi
  • SANROMA GARRIT, Jordi
  • DIEGO GUTIERREZ, Victor
  • GURDIEL GONZALEZ, Enrique
  • ANTON DOMINGUEZ, Victor
  • CHICA CALAF, Antonio
  • VINACUA PLA, Alvaro
  • VIJULIE, Cristina, Raluca
Agents
  • PERRY, Garry A.
  • NICHOLS, Steven L.
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) OFFSET OPERATORS
(FR) OPÉRATEURS DÉCALÉS
Abstract
(EN) In an example, a method includes receiving, at a processor, an object model describing a geometry of a three-dimensional object, and determining a transformed data model describing a volume containing a modified version of the three-dimensional object as a plurality of categorised contiguous, non-overlapping sub-volumes, wherein the modified version of the three-dimensional object includes a surface offset. Determining the transformed data model may comprises categorising the sub-volumes by defining a first region by determining an area swept by an offset operator when the offset operator is swept around a boundary of the sub-volume and defining a second region, interior to the first region, and indicative of the closest approach of the offset operator to the sub-volume when the offset operator is swept around the boundary. Intersections between a surface of the object model and at least one of the first and second region may be determined. When the surface intersects the second region, the sub-volume may be categorised as interior to the three-dimensional object; and when the surface intersects the first region and not the second region, the sub-volume may categorised as spanning a boundary of the three-dimensional object.
(FR) Dans un exemple, l'invention concerne un procédé comprenant la réception, au niveau d'un processeur, d'un modèle d'objet décrivant une géométrie d'un objet tridimensionnel, et la détermination d'un modèle de données transformé décrivant un volume contenant une version modifiée de l'objet tridimensionnel sous la forme d'une pluralité de cellules contiguës catégorisées, sous-volumes non chevauchants, la version modifiée de l'objet tridimensionnel comprenant un décalage de surface. La détermination du modèle de données transformé peut comprendre la catégorisation des sous-volumes en définissant une première région par détermination d'une zone balayée par un opérateur de décalage lorsque l'opérateur de décalage est balayé autour d'une limite du sous-volume et définissant une seconde région, intérieure à la première région, et indiquant l'approche la plus proche de l'opérateur de décalage vers le sous-volume lorsque l'opérateur de décalage est balayé autour de la limite. Des intersections entre une surface du modèle d'objet et au moins l'une des première et seconde régions peuvent être déterminées. Lorsque la surface croise la seconde région, le sous-volume peut être catégorisé à l'intérieur de l'objet tridimensionnel ; et lorsque la surface coupe la première région et non la seconde région, le sous-volume peut catégoriser comme s'étendant sur une limite de l'objet tridimensionnel.
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