US 11,950,921 B2
Portable device for measuring skin condition and skin condition diagnosis and management system
Sang Wook Yoo, Suwon-si (KR); Yong Joon Choe, Seoul (KR); and Sijun Roh, Suwon-si (KR)
Assigned to Lululab Inc., Seoul (KR)
Appl. No. 16/767,583
Filed by Lululab Inc., Seoul (KR)
PCT Filed Nov. 30, 2018, PCT No. PCT/KR2018/015115
§ 371(c)(1), (2) Date May 27, 2020,
PCT Pub. No. WO2019/108028, PCT Pub. Date Jun. 6, 2019.
Claims priority of application No. 10-2017-0162375 (KR), filed on Nov. 30, 2017.
Prior Publication US 2020/0383629 A1, Dec. 10, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/00 (2006.01); A61B 5/1171 (2016.01); G06V 40/16 (2022.01)
CPC A61B 5/442 (2013.01) [A61B 5/0013 (2013.01); A61B 5/0077 (2013.01); A61B 5/1176 (2013.01); A61B 5/7405 (2013.01); A61B 5/742 (2013.01); G06V 40/162 (2022.01); G06V 40/168 (2022.01); A61B 2560/0431 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A portable device for measuring a skin condition, the portable device comprising:
a user face capturing camera;
a processor for forming an entire user face image for measuring the skin condition by
setting a plurality of capturing parameters,
acquiring a plurality of user face images based on the plurality of capturing parameters, the plurality of user face images being captured by the user face capturing camera, wherein the plurality of capturing parameters includes a first capturing parameter and a second capturing parameter based on any one or more of an intensity of a light source, a shutter speed value, and an aperture value,
extracting specific areas of a user face from each of the plurality of user face images, and
gathering the extracted specific areas of the user face from each of the plurality of user face images;
a sensor unit having a distance sensor for measuring a distance between the user and the user face capturing camera; and
an output unit for suggesting the user to move a face position when a partial area of the user face deviates from a reference frame in which the user face capturing camera acquires the plurality of user face images, suggesting the user to move the face position when the distance between the user and the user face capturing camera, which is measured by the distance sensor for measuring the distance between the user and the user face capturing camera, deviates from a preset value, or suggesting the user to move the face position when the partial area of the user face deviates from the reference frame in which the user face capturing camera acquires the plurality of user face images, and the distance between the user and the user face capturing camera, which is measured by the distance sensor for measuring the distance between the user and the user face capturing camera, deviates from the preset value,
wherein the processor controls the output unit for suggesting the user to move the face position,
wherein, in the plurality of capturing parameters,
the first capturing parameter acquires a first user face image of the plurality of user face images, and
the second capturing parameter acquires a second user face image of the plurality of user face images,
the first user face image including
a first center area of the user face having a first brightness value within a first range, and
a first outer periphery area of the user face having a second brightness value within a second range,
the second user face image including
a second center area of the user face having a third brightness value within a third range, and
a second outer periphery area of the user face having a fourth brightness value within a fourth range,
wherein the processor extracts the specific areas including the first center area from the first user face image of the plurality of user face images and the second outer periphery area from the second user face image of the plurality of user face images, and gathers the first center area and the second outer periphery area to generate the entire user face image having a uniform brightness value.