The set up for photogrammetry is the same as for scanning with an iPad, as you can see from the set up photos above. Much like the iPad you need to capture a full 360 of the object you are scanning, however the process takes longer, and is harder to get right. You have to take around 50 images of the object, moving very slowly around it as you photograph, making sure to keep the camera the same distance from the object and the same angle as you do it. These photos then get uploaded into a programme called Autodesk Recap Photo, which stitches your photos into a 3D model.
The images included above are of one of the first attempts to scan one of the bones using this technique- unfortunately the back of the bone didn’t come out.
the video above shows what I mean better- although the detail has been captured beautifully, only half of the bone has come out as a 3D model. I tried a few times with no more success than that, and the software takes a long time to make the model only to find out that it hasn’t worked. I might need to find another method of 3D scanning, as the iPad scans lack the detail that I want, but photogrammetry is proving to be really difficult!