US 11,989,832 B2
Method for constructing a 3D representation of a conduit internal surface
Steven Helmore, Aberdeenshire (GB); Christopher Scott, Norwich (GB); Philip Brown, Norwich (GB); and Jonathan Thursby, Norwich (GB)
Assigned to E.V. OFFSHORE LIMITED, Norwich (GB)
Appl. No. 16/971,973
Filed by E.V. OFFSHORE LIMITED, Norwich (GB)
PCT Filed Feb. 4, 2019, PCT No. PCT/GB2019/050291
§ 371(c)(1), (2) Date Aug. 21, 2020,
PCT Pub. No. WO2019/162643, PCT Pub. Date Aug. 29, 2019.
Claims priority of application No. 1802810 (GB), filed on Feb. 21, 2018; and application No. 1802812 (GB), filed on Feb. 21, 2018.
Prior Publication US 2020/0394839 A1, Dec. 17, 2020
Int. Cl. G06T 17/20 (2006.01); G01B 11/255 (2006.01); G01N 21/954 (2006.01); G06T 5/80 (2024.01); G06T 17/10 (2006.01)
CPC G06T 17/20 (2013.01) [G01B 11/255 (2013.01); G01N 21/954 (2013.01); G06T 5/80 (2024.01); G06T 17/10 (2013.01); G01B 2210/52 (2013.01); G06T 2200/08 (2013.01)] 12 Claims
OG exemplary drawing
 
12. A method for constructing a three-dimensional representation of an internal surface of a conduit, comprising:
obtaining at least two sets of images of a common area of the internal surface, each set of images being obtained under different respective image acquisition conditions;
constructing, from each set of images, a respective composite image of the common area;
providing a shape model of the internal surface;
constructing, using the shape model, a three-dimensional mesh of the internal surface;
constructing a three-dimensional representation of the internal surface by assigning a pixel value from each composite image to a corresponding node of the mesh; and
selecting, for each node, a pixel value from one of the composite images for display in the three-dimensional representation.