Car Scanning with Photogrammetry

[AJ]

Ten24 have, once again, appeared to have achieved the impossible and scanned a car with Photoscan.

http://www.ten24.info/?p=2019

I'm not sure if they'll come forward and say what they're doing to achieve such clean results from reflective/refractive surfaces, but does anyone hear have any ideas?

The only thing I can think of (which I have had some success with myself) is covering the whole object in talcum powder, but I'm not sure how feasible that would be with an entire car...

[chrisd]

Developer spray (there are a few suppliers) seems to work pretty well. The talc sprays do not coat as evenly as the developer spray.

[mrb]

I'd hardly say it's impossible.  I've "scanned" two cars before and got perfectly useable results.  You just have to use a polarizing filter and do it on a cloudy day.

[FoodMan]

look at the window texture... it was covered with Matt photo spray.. 

http://www.ten24.info/ten24/wp-content/uploads/2015/01/CarScan01.jpg