US 11,809,599 B2
Three-dimensional medical image anonymization method and apparatus
Sang Joon Park, Seoul (KR); and Doo Hee Lee, Seoul (KR)
Assigned to MEDICALIP CO., LTD.
Filed by MEDICALIP CO., LTD., Gangwon-do (KR)
Filed on Jun. 15, 2022, as Appl. No. 17/840,953.
Claims priority of application No. 10-2021-0078058 (KR), filed on Jun. 16, 2021.
Prior Publication US 2022/0405425 A1, Dec. 22, 2022
Int. Cl. G06F 21/62 (2013.01); G06T 7/187 (2017.01); G06T 7/11 (2017.01); G06T 7/13 (2017.01); G16H 30/40 (2018.01)
CPC G06F 21/6254 (2013.01) [G06T 7/11 (2017.01); G06T 7/13 (2017.01); G06T 7/187 (2017.01); G16H 30/40 (2018.01); G06T 2200/04 (2013.01); G06T 2207/10081 (2013.01); G06T 2207/30196 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A three-dimensional medical image anonymization method comprising:
determining a skin region of a three-dimensional medical image;
generating a human mask based on a human tissue region segmented from the three-dimensional medical image through segmentation algorithm, the human tissue region including bones and organs inside a human body, excluding the skin region, wherein the human mask represents a human tissue region to be protected from anonymization;
generating a skin expansion region in which the skin region of the three-dimensional medical image is expanded;
generating an anonymization region obtained by removing a region corresponding to the human mask from the skin expansion region; and
changing brightness values of voxels corresponding to the anonymization region in the three-dimensional medical image to a predefined value or an arbitrary value,
wherein the determining of the skin region comprises determining, as the skin region, a region of a predefined thickness inwards into the human body with respect to a boundary portion of the human body in the three-dimensional medical image,
wherein the generating of the skin expansion region comprises expanding the skin region in both an outward direction and an inward direction of the human body with respect to voxels of the skin region, and
the skin expansion region comprises all of the skin region, a region expanded outwards from the human body, and a region expanded inwards into the human body.