Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12412337 | Method for multi-scale digital elevation model generation based on curvature wavelet transform | Ben Ma, Haowen Yan, Min Deng, Shihong Du, Liang Hua Wu +1 more | 2025-09-09 |
| 12400050 | Graph convolution auto-encoder based multi-scale method for computing road network similarity | Haowen Yan, Xiaomin Lu, Weifang Yang, Wende Li, Xiaoning Su +3 more | 2025-08-26 |
| 12158928 | Commutative encryption and watermarking method based on chaotic system and zero watermark for vector geospatial data | Haowen Yan, Liming Zhang, Shuwen Yang, Tao Tan, Zufeng Li +2 more | 2024-12-03 |
| 12118767 | Classification method based on skeleton lines for map building shapes | Haowen Yan, Xiaomin Lu, Liming Zhang, Ben Ma, Pengbo Li +1 more | 2024-10-15 |
| 12073486 | Reversible watermarking method for oblique photography three-dimensional models with controllable accuracy | Haowen Yan, Liming Zhang, Xiaomin Lu, Weifang Yang, Pengbin Wang +1 more | 2024-08-27 |
| 11470023 | Session initiation method and device | Hang XIANG, Bin Li | 2022-10-11 |
| 11302060 | Method and system for vector-raster overlay analysis of ground surface image area based on edge clipping | Yaolin Liu, Peng Xie, Yiheng WANG, Yanfang Liu | 2022-04-12 |
| 10764107 | Session initiation method and device | Hang XIANG, Bin Li | 2020-09-01 |
| 10397147 | Method, apparatus and device for exchanging name card | Junhong Yan, Jinsheng XU, Wenyuan Wang, Wei Yi, Kaiyuan Lv +3 more | 2019-08-27 |