Photogrammetry is a process that allows us to reconstruct an object or a place in 3D from photos. It has undergone a recent and important development that makes it possible to consider applications in the field of projection mapping, in particular for the creation of animations, the positioning of projectors and the preventive implementation. While these advances are currently of application interest mainly for object projection mapping, there is no doubt that in the short term they can be deployed for increasingly important projection mapping project. After a brief overview, this chapter details the interest that photogrammetry can have for projection mapping and makes its contribution to it: a shooting device optimized for photogrammetric reconstruction, easily usable for object projection mapping. The second part considers the short-term developments in photogrammetry and the implications they will have at different levels of projection mapping design and production.
8.2. State of the art
The principle of photogrammetry has been known for a long time. From the parallax differences between different photos of the same subject, it is possible to obtain a topographic representation. While Alberti’s famous contructione leggitima allows us to convert a plan into a perspectivist representation, photogrammetry does the opposite, but with an additional ...