US 12,315,084 B2
System and method for extracting a region of interest from volume data
Weipin Nie, Shanghai (CN); Yue Gao, Shanghai (CN); Hao Zeng, Shanghai (CN); Chao Fu, Shanghai (CN); and Ce Wang, Shanghai (CN)
Assigned to SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed by SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed on Sep. 28, 2023, as Appl. No. 18/477,535.
Application 18/477,535 is a continuation of application No. 17/305,248, filed on Jul. 2, 2021, granted, now 11,776,216.
Application 17/305,248 is a continuation of application No. 16/236,622, filed on Dec. 30, 2018, granted, now 11,094,066, issued on Aug. 17, 2021.
Application 16/236,622 is a continuation of application No. PCT/CN2017/095320, filed on Jul. 31, 2017.
Prior Publication US 2024/0029359 A1, Jan. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06T 19/00 (2011.01); G06T 7/11 (2017.01); G06T 7/12 (2017.01); G06T 7/187 (2017.01); G06T 19/20 (2011.01); G06V 10/25 (2022.01)
CPC G06T 19/00 (2013.01) [G06T 7/11 (2017.01); G06T 7/12 (2017.01); G06T 7/187 (2017.01); G06T 19/20 (2013.01); G06V 10/25 (2022.01); G06T 2207/20104 (2013.01); G06T 2207/30056 (2013.01); G06T 2207/30096 (2013.01); G06T 2207/30101 (2013.01); G06T 2210/41 (2013.01); G06T 2219/028 (2013.01); G06T 2219/2021 (2013.01); G06V 2201/031 (2022.01)] 6 Claims
OG exemplary drawing
 
1. A method implemented on at least one machine, each of the at least one machine having at least one processor and one storage, the method comprising:
acquiring image data generated by a medical imaging device;
performing region growing of a volume of interest (VOI);
suspending the region growing of the VOI;
determining a texture of the VOI based on voxels in a current volume rendering (VR) image, wherein on a projection line passing through the current VR image at an angle and one of the voxels, no other voxel that has higher transparency than the voxel is present,
determining a first set of seed points, the first set of seed points including all seed points growing from a first point in time to a second point in time when the region growing is suspended;
determining depth information of the current VR image;
determining a second set of seed points based on the depth information, wherein the first set of seed points includes the second set of seed points;
determining, based on a plurality of three-dimensional coordinates of the second set of seed points, a plurality of two-dimensional projection coordinates of the second set of seed points; and
determining based on the plurality of two-dimensional projection coordinates of the second set of seed points, at least one portion of the VOI, voxels in a current VOI image including the second set of seed points, wherein the depth information represents location information of different voxels in a three-dimensional space and the second set of seed points are determined based on the location information in the three-dimensional space and a transparency of the different voxels, on a projection line passing through the current VR image at an angle and a first voxel in the first set of seed points,
if no other voxel that has higher transparency than the first voxel is present, the first voxel belongs to the second set of seed points, or
if a voxel that has higher transparency than the first voxel is present, the first voxel does not belong to the second set of seed points.