![]() Using the same camera objective without changing the zoom setting, while not mandatory, can significantly improve the autocalibration phase.In all the other scenarios the general rule is to allow for sufficient overlap (60% as a rule of thumb, the more the better) and for a sufficient baseline length (the point from which you shoot must vary).If you need higher resolution you can do multiple close-up sweeps, ensuring to cover (with overlap) the whole facade height. Then sweep all the facades (or walls) from a distance that allows to frame the whole facade height, and with a 60% side overlap. Choose 2 or 3 spots in the square and take a panoramic sequence of pictures from each spot (ensuring the usual 60% overlap). If you are using Zephyr in a urban scenario (like a square or inside a hall), we suggest the following procedure.Otherwise, as a rule of thumb, 3 orbits of 24 images each will typically suffice. If the acquisition follows a strict planning, you can apply the same rules as in the aerial case. This indeed can be seen as a special case of the aerial photogrammetry application, where the orbit plays the role of the strip. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |