Scanning white objects with the help of UV powder
Photogrammetry requires an object to have a lot of surface features. For this reason, plastic and metal objects almost always need some kind of preparation (see the scan gallery for many examples). My normal workflow includes spraying the object with scanning or chalk spray and creating a very fine layer of thousands of sprinkles. Unfortunately, scanning spray only comes in the color white and chalk spray with a different color tends to leave some stain after washing/removing