US 12,229,976 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 Jun. 26, 2023, as Appl. No. 18/214,344.
Application 18/214,344 is a continuation of application No. 16/817,962, filed on Mar. 13, 2020, granted, now 11,688,085.
Claims priority of provisional application 62/819,319, filed on Mar. 15, 2019.
Prior Publication US 2024/0087148 A1, Mar. 14, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06T 7/41 (2017.01); G06T 7/40 (2017.01); G06V 10/141 (2022.01); G06V 10/20 (2022.01); G06V 10/56 (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 preparing a building surface, the method comprising:
providing a comparator value or an assessment indicator that is based on the comparator value with respect to a first area of the building surface, wherein the comparator value is provided by a method comprising
receiving a first image of the first area captured while the first area is illuminated by a light source from a single direction, the first image including a first group of digital pixel values;
calculating a first set of values that characterize a first surface texture of the first area based on the first group of digital pixel values; and
comparing the first set of values to a second set of values that characterize a second surface texture, so as to produce a comparator value; and
responsive to the comparator value or assessment indicator, modifying a first section of the building surface that includes the first area.