topic Re: Measuring objects in the exported OBJ file in ReCap Forum

Measuring objects in the exported OBJ file

Anonymous — Mon, 06 Jun 2016 23:40:59 GMT

I made a Photo-to-3D model and exported its OBJ file. When I loaded the file into MeshLab (just until there's a version of ReCap or ReMake for Mac) and used its measurement tool, the lengths of objects are about half what they should be. Has anyone else seen and solved this problem?

Re: Measuring objects in the exported OBJ file

ryan.frenz — Tue, 07 Jun 2016 01:48:15 GMT

Maybe some experts will chime in - but I'm not sure you can get scale in a Photo-to-3d job out of the box. You'll need to either:

a) set control points or distances in the source images prior to starting the job, then use RCS output

b) or, after processing, use ReMake to scale the model based on known points or distances. MeshLab may do something similar - I'm not familiar with it.

I'm pretty sure OBJ has no notion of scale or units - so I would suggest avoiding it once you've scaled the model

Ryan.

Re: Measuring objects in the exported OBJ file

Anonymous — Tue, 07 Jun 2016 05:16:44 GMT

I hoped the OBJ file might have absolute dimensions carried through from the georeferences in the EXIF of the images, but sounds like I need a Windows machine to measure things. Thanks Ryan.