Lanzhou Jiaotong University

Pengbin Wang

Haowen Yan

Jingzhong Li

Xiaomin Lu

Liming Zhang

Weifang Yang

Ziyi Zhang

The disclosure provides a reversible watermarking method for the oblique photography three-dimensional models with controllable accuracy. According to the disclosure: firstly, by using the global stability of the average included angle of vertex normal vector, the feature points of the oblique photography three-dimensional model are extracted; secondly, the mapping relationship is established by the ratio of the distance between feature points and non-feature points, and the vertexes are grouped, and each group consists of a feature point corresponding to several non-feature points; finally, the spherical coordinate system is constructed by taking the feature points as the coordinate origin in grouping, and the watermark is embedded by modifying the radius of the coordinate system.

Growing community of inventors

Gansu, China

Pengbin Wang