Apparatus and method for generating 3d printing model using multiple textures

Patent metadata

Field	Value
Publication number	US-2017255714-A1
Application number	US-201715409825-A
Country	US
Kind code	A1
Filing date	Jan 19, 2017
Priority date	Mar 3, 2016
Publication date	Sep 7, 2017
Grant date	—

Abstract

An apparatus for generating a 3D printing model using multiple textures includes a template model storage unit configured to store template models that are 3D models previously manufactured to be printable, a 3D model conversion unit configured to, upon receiving a 3D input model and a texture image, perform mesh deformation on the template model stored in the template model storage unit by using geometric information about the 3D input model, a texture processing unit configured to assign the texture image to the 3D model having being subjected to the mesh deformation, and a 3D printing model output unit configured to output a geometric model and a texture image of the template model which are finally calculated.

First claim

What is claimed is:

1 . An apparatus for generating a 3D printing model using multiple textures, the apparatus comprising:
a template model storage unit configured to store template models that are 3D models previously manufactured to be printable; a 3D model conversion unit configured to, upon receiving a 3D input model and a texture image, perform mesh deformation on the template model stored in the template model storage unit by using geometric information about the 3D input model; a texture processing unit configured to assign the texture image to the 3D model having being subjected to the mesh deformation; and a 3D printing model output unit configured to output a geometric model and a texture image of the template model which are finally calculated.

2 . The apparatus of claim 1 , wherein the texture processing unit comprises:
a correspondence setting unit configured to calculate a correspondence between the 3D input model and the template model having finished the mesh deformation, and search for a triangle of the deformed model which corresponds to each vertex of the 3D input model; a validity check unit configured to compare a reconstruction area of the 3D input model with a reconstruction area of the template model to calculate a part of texture areas of the template model to which a texture needs to be newly assigned; a texture warping unit configured to warp a triangle of the input texture image into a triangle of a texture of the template model with respect to a valid area based on the set correspondence; and a color matching unit configured to transform a remaining part of the texture areas of the template model to have a same color as a color of the texture of the input model.

3 . The apparatus of claim 2 , wherein the validity check unit sets a minimum area in consideration of a viewing direction of a user and a normal direction of a model.

4 . The apparatus of claim 2 , wherein the texture warping unit calculates a vertex value through interpolation with respect to inside of a triangle of the template model corresponding to the input 3D model.

5 . A method for generating a 3D printing model using multiple textures, the method comprising:
receiving a 3D input model and a texture image; performing mesh deformation on a template model that is a 3D model previously manufactured to be printable, by using geometric information about the 3D input model; assigning the texture image to the 3D model having being subjected to the mesh deformation; and outputting a geometric model and a texture image of the template model which are finally calculated.

6 . The method of claim 5 , wherein the assigning of the texture image comprises:
calculating a correspondence between the 3D input model and the template model having completed the mesh deformation, and searching for a triangle of the deformed model which corresponds to each vertex of the 3D input model; calculating a part of texture areas of the template model to which a texture needs to be newly assigned by comparing a reconstruction area of the 3D input model with a reconstruction area of the template model; warping a triangle of the input texture image into a triangle of a texture of the template model with respect to a valid area based on the set correspondence; and transforming a remaining part of the texture areas of the template model to have a same color as a color of the texture of the input model.

7 . The method of claim 6 , wherein the calculating of a part of texture areas of the template model to which a texture needs to be newly assigned includes setting a minimum area in consideration of a viewing direction of a user and a normal direction of a model.

8 . The method of claim 6 , wherein the warping of a triangle of the input texture image into a triangle of a texture of the template model includes calculating a vertex value through interpolation with respect to inside of a triangle of the template model corresponding to the input 3D model.

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Yoon Seung Uk
• Lim Seong Jae
• Jun Hye Ryeong
• Hwang Bon Woo
• Park Chang Joon
• Choi Jin Sung

Classifications

• G06F30/17 Primary

  Mechanical parametric or variational design · CPC title

• B33Y50/00 Primary

  Data acquisition or data processing for additive manufacturing · CPC title

• B29C64/393

  for controlling or regulating additive manufacturing processes · CPC title

• B29C67/0088

  Operations & Transport · mapped topic

• G06F17/50 Primary

  Physics · mapped topic