US 11,918,439 B2
Projected texture pattern for intra-oral 3D imaging
David B. Stegall, Saint Paul, MN (US); Shannon D. Scott, Hudson, WI (US); and Amanda L. Kastanek, Saint Paul, MN (US)
Assigned to MEDIT CORP., Seoul (KR)
Appl. No. 16/977,365
Filed by MEDIT CORP., Seoul (KR)
PCT Filed Feb. 7, 2019, PCT No. PCT/IB2019/050996
§ 371(c)(1), (2) Date Sep. 1, 2020,
PCT Pub. No. WO2019/155401, PCT Pub. Date Aug. 15, 2019.
Claims priority of provisional application 62/629,244, filed on Feb. 12, 2018.
Prior Publication US 2021/0361395 A1, Nov. 25, 2021
Int. Cl. G06T 7/00 (2017.01); A61C 9/00 (2006.01); G01B 11/25 (2006.01); G02B 5/30 (2006.01); G02B 27/28 (2006.01); G06T 7/40 (2017.01); H04N 9/31 (2006.01)
CPC A61C 9/006 (2013.01) [G01B 11/254 (2013.01); G02B 5/3083 (2013.01); G02B 27/283 (2013.01); G06T 7/0012 (2013.01); G06T 7/40 (2013.01); H04N 9/3167 (2013.01); G06T 2207/30036 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for intra-oral imaging using a projected texture pattern, comprising:
a projector; and
an image sensor,
wherein the projector is configured to determine a size of blocks for a random texture pattern based on translucency of an object to be imaged and project the random texture pattern of light to the object to be imaged, and the image sensor is configured to receive the projected texture pattern from the object to be imaged, and wherein the size of blocks included in the projected texture pattern is sufficient for the image sensor to resolve features on a surface of the object to be imaged.