Why It’s Important to Add New Floors as You Scan
This model incorporates two floors, a rear patio, exterior spiral staircase and a rooftop deck. In the early days of scanning there was no differentiation between floors. When scanning a multilevel property, you had make note of which scan numbers were on each floor. Once you went to another level to scan, you had to carefully track each new scan because it overlaid on top of the other floor(s).
As in this model, I intentionally shot it as one floor to show how difficult it is to know where you are 'located' with multi-floor properties. Scans 18-34 are the second floor, 54-57 are the rooftop, and 64-67 are the bonus room (see mini-map below). I removed all markings to easily see the scan points. After completing the scan, I copied the model and then created the additional floors and moved the appropriate scan points to their proper floor. I marked windows, mirrors and trim (as best I could), and then reprocessed to see what impact adding floors/moving scans would have on the finished model.
Fortunately, if you do forget to differentiate floors, the model will process ok and you’ll be able to use it without any navigational problems (most of the time – see hanging artifact below). But you lose the ability to easily and accurately mark mirrors/windows on any floor but the first one you shot. It gets very confusing.
This will result in a dollhouse view that may have a lot of artifacts and leakage showing. Plus, besides a poor looking dollhouse, when viewing the Space the floorplan view will not be accurate. (With this model I left off all trim to see the effect on the different views).
You also risk that with mirrors not marked properly, you could get a hanging artifact(s) blocking a doorway or hallway preventing movement. This likely would result in having to rescan the property as you might not be able to find the mirror/reflective surface that is not marked properly. There is also a lot of extra time spent fixing a model by creating additional floors after the scan.
Here is an example of what happens to the Dollhouse if mirrors, windows and trim are not marked:
After creating the different floors, moving the scans, marking and reprocessing, the finished model works fine. But it doesn’t individually show all four floors that I created. The pics below show how the model turned out. Floor 1 includes the first floor, rooftop and bonus room. Floor 2 is only floor two. (view model below)
Prior to each job I create the Capture Floor Plan on the iPad the day before the shoot, check the address on Zillow and Googlemaps, and also create the additional floors. After I complete my preliminary walkthrough of the property to review for the scanning path, I’ll confirm the floors are accurate and then begin the shoot. I’ve found that creating the floors prior to starting the scan process is better for me, rather than as I go.
Here is the finished model link. https://my.matterport.com/show/?m=jheRczWDz5i
Note the ‘blue wall’ of the adjoining property. If I move the trim too close I lose the wall of the property, so I decided to let it stay.