[closedcontour]

Thank you. Unfortunately I have not yet written anything detailed about the renderer. As is typical with this sort of project, I had grand ambitions about many features and articles to write but have really only been able to focus on the daily updates.

Oh, how I wish it was automatic! I have a script that pulls EXIF data out of the photos and initially places them in the scene but then I manually rectify it. In fact, all the keyboard shortcuts are still there if you want to see the process. Select a photo then play with these keys:

B (toggle white background), 1-5 (image opacity), QEWSAD (camera orientation), HNIKJL (camera position), [] (camera FOV), and / (console.log the variables). Shift does smaller increments.

In theory, the iPhone has enough metadata to make a decent first guess (GPS, phone orientation, and compass direction). In practice, that wouldn't be enough to do it automatically, you'd have to do some sort of additional fitting. Video and photo georegistration is an important problem in many domains with active research -- perhaps some day this will trickle down into a library I could use.