Introducing and installing KIRI Engine on your smartphone
What is KIRI Engine? Well, KIRI Engine is an application that falls under the category of photogrammetry. Photogrammetry is the process of creating 3D geometry inside a 3D application (automatically, for the most part) using photographs.
In the context of creating a face scan for a MetaHuman, photogrammetry requires the artist to take multiple photographs in a 180-degree arc and at varying heights. From Figure 11.2, you can see four different angles of a head and shoulders.
Figure 11.2: Typical camera positions
We are only interested in the front of the face, which is why we only capture within a 180-degree arc. It’s also important to get high and low angles so that we get information for under the chin, nostrils, and the forehead.
Tips for shooting photogrammetry
- Use diffused (soft) lighting so there are no shadows on the face
- Have your subject sit very still with their chin tilted...
