| 3D Simultaneous Localisation and Map-Building Using Active Vision for a Robot Moving on Undulating Terrain Recent countries visiting this post |  |
 | 5 | United States |
 | 2 | China |
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| 3D Simultaneous Localisation and Map-Building Using Active Vision for a Robot Moving on Undulating Terrain Recent countries visiting this post | |
| 5 | United States |
| 2 | China |
| 1 | |
| 1 | Sweden |