US 11,688,085 B2
Method of characterizing a surface texture and texture characterization tool
Rachel Z. Pytel, Newton, MA (US); Sidath S. Wijesooriya, Wayland, MA (US); Simon Mazoyer, Paris (FR); and Brice Dubost, Newton, MA (US)
Assigned to CERTAINTEED GYPSUM, INC., Malvern, PA (US)
Filed by CertainTeed Gypsum, Inc., Malvern, PA (US)
Filed on Mar. 13, 2020, as Appl. No. 16/817,962.
Claims priority of provisional application 62/819,319, filed on Mar. 15, 2019.
Prior Publication US 2020/0294255 A1, Sep. 17, 2020
Int. Cl. G06T 7/40 (2017.01); G06T 7/41 (2017.01); G06V 10/141 (2022.01); G06V 10/56 (2022.01); G06V 10/20 (2022.01)
CPC G06T 7/41 (2017.01) [G06T 7/40 (2013.01); G06V 10/141 (2022.01); G06V 10/20 (2022.01); G06V 10/56 (2022.01); G06T 2207/30184 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of characterizing a surface texture of a building surface, the method comprising:
activating, by a computing device, a light source of a texture characterization tool while the texture characterization tool is disposed over a first area of the building surface so as to illuminate the first area from a single direction;
receiving, via the computing device, a first image of the first area captured by a camera of the texture characterization tool while the first area is illuminated by the light source, the first image including a first group of digital pixel values;
calculating, using the computing device, a first set of values that characterize a first surface texture of the first area based on the first group of digital pixel values;
comparing, using the computing device, the first set of values to a second set of values that characterize a second surface texture, so as to produce a comparator value.