公开(公告)号：US10769745B2

公开(公告)日：2020-09-08

申请号：US15387121

申请日：2016-12-21

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Heung-Kyu Lee ,  Han-Ul Jang ,  Hak-Yeol Choi ,  Jeongho Son ,  Seung-Min Mun ,  Dongkyu Kim ,  Jong-Uk Hou ,  Wookhyung Kim

IPC: G06T1/00 ,  G06T7/10 ,  G06T17/10 ,  G06T7/60 ,  G06T17/20

Abstract: Disclosed is a 3D mesh model watermarking method using a divisional scheme. The method of inserting a watermark into a three-dimensional (3D) mesh model includes: calculating a geometric primitive of the 3D mesh model; dividing the 3D mesh model into a plurality of mesh segments by using the geometric primitive; converting the mesh segments into mesh segments of a vertex distance-based coordinate system; inserting a predetermined watermark into each of the mesh segments of the vertex distance-based coordinate system; and restoring the mesh segments into which the watermark is inserted to a Cartesian coordinate system.

公开(公告)号：US10438311B2

公开(公告)日：2019-10-08

申请号：US15719364

申请日：2017-09-28

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Heung-Kyu Lee ,  Jong-Uk Hou ,  Hak-Yeol Choi ,  Hyun-Ji Song ,  Do-Gon Kim ,  Han-Ul Jang

IPC: G06K9/00 ,  G06T1/00 ,  G06F21/16 ,  G06F21/10 ,  B33Y10/00

Abstract: In a watermark embedding method and apparatus, a layered three-dimensional model is aligned in a printing direction based on a layering direction of the layered three-dimensional model. Then, a watermark having a predetermined pattern is embedded into the aligned three-dimensional model in a direction orthogonal to the printing direction so that the embedded watermark is not associated with the printing direction.

公开(公告)号：US20170213310A1

公开(公告)日：2017-07-27

申请号：US15387121

申请日：2016-12-21

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Heung-Kyu Lee ,  Han-Ul Jang ,  Hak-Yeol Choi ,  Jeongho Son ,  Seung-Min Mun ,  Dongkyu Kim ,  Jong-Uk Hou ,  Wookhyung Kim

IPC: G06T1/00 ,  G06T17/10 ,  G06T7/60 ,  G06T17/20 ,  G06T7/10

Abstract: Disclosed is a 3D mesh model watermarking method using a divisional scheme. The method of inserting a watermark into a three-dimensional (3D) mesh model includes: calculating a geometric primitive of the 3D mesh model; dividing the 3D mesh model into a plurality of mesh segments by using the geometric primitive; converting the mesh segments into mesh segments of a vertex distance-based coordinate system; inserting a predetermined watermark into each of the mesh segments of the vertex distance-based coordinate system; and restoring the mesh segments into which the watermark is inserted to a Cartesian coordinate system.