How To

Quick Start

Taking good photos of an object is the most important prerequisite to achieving high-quality results. Since ObjExImg is a graphical interface to the photogrammetry engine of macOS, it’s highly recommended to have a look at Apple’s documentation about capturing photos for photogrammetry.
Apple also provides an introductory video, and, in case you just want to try the process first without taking your own set of photos, some example photo sets.

Choosing Objects

To get this right out of the way: Photogrammetry is no magic silver bullet, it does not work equally well for all objects, and some objects won’t produce usable results at all.

Photogrammetry reconstructs a 3D model by identifying the same points on the surface of an object in photos taken from different angles. This implies that the surface of the object must consist of uniquely identifiable landmarks, whose appearance does not change with the direction of viewing and lighting.

Good candidates are matte objects with detail-rich textures. Problematic are evenly colored and especially dark surfaces, and shiny, reflective, or translucent areas.


For best results pick Raw or Full detail level:

If the lower detail levels produce undesirable artifacts, instead of re-shooting photos try higher detail levels first.

Object Masking: For most use cases, it is desirable to isolate the object from its environment. Toggle if you want the full scene as photographed to be reconstructed (results may vary).

Feature Sensitivity: Try experimenting with this option. High produces better results for some objects, and lesser for others.

Download on the Mac App Store