US 11,657,509 B2
Method for precisely and automatically positioning reference line for integrated images
Qingzhen Ma, Shanghai (CN); Yanyan Wang, Shanghai (CN); and Bin Ouyang, Shanghai (CN)
Assigned to SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed by SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed on Jan. 11, 2021, as Appl. No. 17/145,422.
Application 17/145,422 is a continuation of application No. 16/218,013, filed on Dec. 12, 2018, granted, now 10,909,685.
Application 16/218,013 is a continuation of application No. PCT/CN2017/084007, filed on May 11, 2017.
Prior Publication US 2021/0133978 A1, May 6, 2021
Int. Cl. G06T 7/11 (2017.01); G06T 7/174 (2017.01); G06T 7/00 (2017.01); A61B 6/00 (2006.01); G06T 7/33 (2017.01)
CPC G06T 7/11 (2017.01) [A61B 6/5235 (2013.01); G06T 7/0014 (2013.01); G06T 7/174 (2017.01); G06T 7/33 (2017.01); A61B 6/501 (2013.01); G06T 2207/10081 (2013.01); G06T 2207/10088 (2013.01); G06T 2207/10104 (2013.01); G06T 2207/30012 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for determining a reference line, comprising:
obtaining at least two original images, the at least two original images corresponding to first spatial position information;
determining a composite image based on the at least two original images, the composite image corresponding to second spatial position information;
determining a composition relationship between the at least two original images; and
determining at least one reference line based on the composition relationship between the at least two original images, the first spatial position information, and the second spatial position information, wherein the at least one reference line displays a positional relationship between one of the at least two original images and a reference image on the composite image, wherein the determining at least one reference line comprises:
determining a first reference line based on the first spatial position information and the second spatial position information;
obtaining, based on an objective function, a transformation matrix by performing at least one of translation or rotation operation to the first reference line; and
obtaining a second reference line by correcting the first reference line based on the transformation matrix.