4 ms·
It seems like this has good promise, but scale is random on the output. I've been looking for a good way to make a customized face mask using photogrammetry an
by crowbahr 6y ago
It seems like this has good promise, but scale is random on the output.
I've been looking for a good way to make a customized face mask using photogrammetry and my 3d printer, so I'm going to give this a shot. The only issue will be scaling the model so that my head is the right size for the modeling process.
- cameronfraser 6y agoThe scale issue is a problem with any software like this unfortunately, it makes doing this type of processing in chunks very difficult as you are getting different scale outputs and nothing really relating the chunks together. OpenSFM does some neat stuff where they use location data and just search for matches between images near that location.
- rkagerer 6y agoDumb question: could you not simply include an object in the scene that is of known dimensions and use that to calibrate scale?
- zo1 6y agoYes, you definitely could? Not sure for this piece of software specifically though. But for land-based photogrammetry in general, they usually use known control-points that have fixed 3d coordinates attached to them in order to calibrate their models. They also use that to effectively "tie" the resulting model to an actual location on the map.
- plutonorm 6y agoI'm doing custom face masks as we speak! Buy yourself a set of calipers or mark out a distance on your face before you scan...
- crowbahr 6y agoI've had a hard time getting the meshes to really render accurately, unfortunately.
- dorkwood 6y agoUnfortunately, scale gets messed up even when transferring regular 3D files between different software packages. It's pretty common when importing a 3D file to have to scale your model by either 0.1, 0.01, 10, 100 etc. just to get things back to normal.