Spins and Photogrammetry


3D model of a tea pot reconstructed with photogrammetry (Reality Capture software).

It all starts by taking a lot of photos.

The photo series is made up of 108 photographs taken by 3 cameras set in various angles (5, 30 and 60 degrees). The centerless turntable rotates 10 degrees and activates cameras and flashes in parallel. Learn more about the machine and process here.
3D Reconstruction in Reality Capture software based on the photo series mentioned above.
Photograph. PhotoRobot’s own software only processes jpgs. This object is centered, cropped and compressed into a jpg but the file size is still 350KB. RAW images are also saved and converted to TIFF file format for the archive (international standard). These files are accessible upon request from AALTO ARCHIVES.

3D models can be made from a series of photos with a technique called Photogrammetry. Alice Vision’s Meshroom is an example of open-source photogrammetry software and they explain the process like this:

“Photogrammetry is the science of making measurements from photographs. It infers the geometry of a scene from a set of unordered photographs or videos. Photography is the projection of a 3D scene onto a 2D plane, losing depth information. The goal of photogrammetry is to reverse this process. The dense modeling of the scene is the result yielded by chaining two computer vision-based pipelines: “Structure-from-Motion” (SfM) and “Multi View Stereo” (MVS).”