公开(公告)号：US20180133972A1

公开(公告)日：2018-05-17

申请号：US15564405

申请日：2015-07-15

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Jan MOROVIC ,  Peter MOROVIC ,  Jay S. GONDEK

IPC: B29C64/393 ,  B33Y50/02 ,  B33Y30/00 ,  G05B19/4099

CPC classification number: B29C64/393 ,  B29C64/165 ,  B29C64/386 ,  B33Y30/00 ,  B33Y50/02 ,  G05B19/4099 ,  G05B2219/49023

Abstract: Certain examples described herein relate to producing three-dimensional objects using additive manufacturing systems. These examples combine the use of material volume coverage vectors to define object data with octree data structures and models for tracking material placement error and available volumes. Material volume coverage vectors correspond to a volumes of three-dimensional objects and define a probabilistic distribution of materials available to an additive manufacturing system including combinations of said materials. In certain examples, a bottom level of the error tracking octree model is constructed to contain at least a portion of the data values for a set of obtained material volume coverage vectors. This is then used in an error distribution process to generate manufacturing control data for the additive manufacturing system.

公开(公告)号：US20170365095A1

公开(公告)日：2017-12-21

申请号：US15544504

申请日：2015-04-16

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Peter MOROVIC ,  Jan MOROVIC ,  Jay S. GONDEK ,  Juan Manuel GARCIA REYERO VINAS

IPC: G06T17/10 ,  H04N1/405 ,  B33Y50/00

CPC classification number: G06T17/10 ,  B33Y50/00 ,  H04N1/405

Abstract: Certain examples described herein relate to a three-dimensional threshold matrix. The three-dimensional threshold matrix may be used for three-dimensional halftoning. In one example, values for a predefined two-dimensional threshold matrix are shifted with respect to a third dimension to provide the three-dimensional threshold matrix. In one example, the three-dimensional threshold matrix may then be processed in association with a digital representation of a three-dimensional object to output discrete material arrangement instructions for at least one production material. The instructions may be used to control an additive manufacturing system to produce the three-dimensional object.