Yes, still using Canvas on a day to day basis, its a daily driver alongside my Disto. As I’ve mentioned before, the accuracy of the raw scans, I find, is excellent. I always still do a measured survey but depending on the type of job, I would use the Scan to CAD service or create the model from scratch and use the Canvas scans for reference. The Scan to CAD service has improved over the year and is much more accurate and the result still needs some fettling but ultimately still saves me vast amounts of time.
Canvas (the app) itself has also improved, with better drift correction and things like that.
A large proportion of my work is similar to yours - retrofitting / alteration / extensions for people with disability.
We have been discussing equipping the consultant OT’s (occupational therapist) with Structure / iPad / Canvas as it really is super easy to use, you can’t really go wrong once you have practised the scanning techniques.
Not sure on the maximum size you can scan, I’ve never run into that sort of ceiling apart from memory constraints as the progressing scan is saved into memory - so obviously iPad Pro is better in this respect (4GB) but you can do things to the room to maximise the scan area (cover reflective surfaces like TV’s, mirrors, pull the curtains or binds etc as reflective surfaces affect the memory usage)
The Scan to CAD results can be stitched together, speak to Alex regarding questions related to this.
I’ve attached below a recent Scan to Cad result, its for a friend so happy to show - this is the raw result back from the service, I haven’t altered or added anything to this, so yes, an excellent starter for 10. So i was on site doing the survey for about 3-4 hours, carried out a standard measured survey with my Disto, Magicplan & Sketch. Canvas scan survey and photo survey. So to get this sort of result back is pretty darn good in my book, yes it’ll need some fettling but only a few hours. I’m not the fastest modeller so starting from this point has saved me a ton of time.
Shortcomings? Difficult to say, it does what is says on the tin, it is incredibly simple to use. I guess navigating the scan in Canvas itself is a little unusual as the camera tends to be around the level of the the sensor height, so if you have scanned, say a stairwell, its difficult to move the camera vertically if you want to take measurements, and as you move back away from the model the camera angle widens - most of the time this is very helpful so you can measure between parallel walls (the app recognises opposing walls and will handily give you a planar measurement). but this is a very small gripe, I mostly export the scan from the app to Meshlab on my MacBook and do most of the measurements there.
That said, I would have also done a measured survey so this is mostly about corroboration and to get measurements where I haven’t recorded traditionally (complex height information, difficult to measure architectural details stuff like that)
It isn’t a magic bullet but I wouldn’t do without this tool now, its a primary source of survey information alongside, measured survey, photos, video etc. I rely on it, when I get to a job, its the first thing I get out and connected, when I’m building my model, Canvas is open on my iPad with the relevant scan up, it puts you back in the room and helps you remember all those little details and nuances.
Customer reaction is good, people are interested dunno about confidence - I wouldn’t be there in the first place unless I have and maintain a good rep
Quite happy to answer questions, so feel free.