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Title:
EMBEDDING METHOD FOR THREE-DIMENSIONAL DIGITAL MODEL DUAL LAYER BLIND WATERMARK, EXTRACTING METHOD FOR THREE-DIMENSIONAL DIGITAL MODEL DUAL LAYER BLIND WATERMARK, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2019/114290
Kind Code:
A1
Abstract:
The present invention provides an embedding method for a three-dimensional digital model dual layer blind watermark, an extracting method for the three-dimensional digital model dual layer blind watermark, and a storage medium. The embedding method comprises: filtering a first type of vertices from a three-dimensional digital model according to a first-layer watermark embedding condition; obtaining a pixel point feature attribute of a two-dimensional image used as a first-layer watermark; adjusting corresponding positions of the first type of vertices according to the pixel point feature attribute in the three-dimensional digital model; filtering a second type of vertices meeting a preset condition from the adjusted three-dimensional digital model; selecting a two-ring neighborhood of vertex meeting a second-layer watermark embedding condition from two-ring neighborhood of vertices of the second type of vertices; obtaining a numerical sequence used as a second-layer watermark, the numerical sequence comprising values at different numerical digits; and when the position of the selected two-ring neighborhood of vertex corresponding to a numerical digit does not match a value at the corresponding numerical digit, adjusting the position of the two-ring neighborhood of vertex corresponding to the numerical digit to match the value.

Inventors:
HE WENQI (CN)
WANG QILEI (CN)
PENG XIANG (CN)
LIU XIAOLI (CN)
Application Number:
PCT/CN2018/099080
Publication Date:
June 20, 2019
Filing Date:
August 07, 2018
Export Citation:
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Assignee:
UNIV SHENZHEN (CN)
SHENZHEN ESUN DISPLAY CO LTD (CN)
International Classes:
G06T1/00; G06T19/20
Foreign References:
CN101533508A2009-09-16
CN104036448A2014-09-10
CN106709855A2017-05-24
CN106485642A2017-03-08
KR20090091575A2009-08-28
Other References:
ASIKUZZAMAN, M.: "A Blindwatermarking Scheme for Depth-Image-Based Rendered 3D Video Using the Dual-Tree Complex Wavelet Transform", ICIP 2014, 31 December 2014 (2014-12-31), pages 5497 - 5501, XP032967633
Attorney, Agent or Firm:
HENSEN INTELLECTUAL PROPERTY FIRM (CN)
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