US 12,243,225 B2
Determining whether hairs on an area of skin have been treated with a light pulse
Shakith Devinda Fernando, Eindhoven (NL); Karl Catharina Van Bree, Eindhoven (NL); Jan Brouwer, Eindhoven (NL); Gerben Kooijman, Leende (NL); Felipe Maia Masculo, Eindhoven (NL); Cornelis Willem Hameetman, Rotterdam (NL); and Adrienne Heinrich, Taguig (PH)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 17/637,868
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Sep. 3, 2020, PCT No. PCT/EP2020/074558
§ 371(c)(1), (2) Date Feb. 24, 2022,
PCT Pub. No. WO2021/052766, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 19198816 (EP), filed on Sep. 20, 2019.
Prior Publication US 2022/0277442 A1, Sep. 1, 2022
Int. Cl. G06T 7/00 (2017.01); A61N 5/06 (2006.01)
CPC G06T 7/0012 (2013.01) [A61N 5/0617 (2013.01); G06T 2207/20081 (2013.01); G06T 2207/30088 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for use with a treatment device, wherein the treatment device is configured to apply a light pulse to skin of a subject to perform a treatment operation to hairs on the skin, the apparatus comprising a processing unit configured to:
receive one or more images of an area of the skin from an imaging unit, wherein the imaging unit is arranged to obtain images of the skin of the subject;
process the one or more images to determine whether the hairs on the area of the skin have been treated with a light pulse based on a degree of at least one of carbonization of the hairs and/or curling of the hairs on the area of the skin as shown in the one or more images; and
output a signal indicating whether the hairs on the area of the skin have been treated with the light pulse.