US 9,811,611 B2
Method and apparatus for creating curved surface model
Kai Wang, Beijing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Jun. 26, 2015, as Appl. No. 14/751,776.
Claims priority of application No. 2014 1 0301820 (CN), filed on Jun. 27, 2014.
Prior Publication US 2015/0379163 A1, Dec. 31, 2015
Int. Cl. G06T 19/20 (2011.01); G06F 17/10 (2006.01); G06F 17/50 (2006.01); G06T 17/00 (2006.01)
CPC G06F 17/50 (2013.01) [G06F 17/10 (2013.01); G06T 17/00 (2013.01); G06T 19/20 (2013.01); G06T 2219/2021 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for creating a curved surface model, comprising:
acquiring an already input section line of a target object;
dividing three-dimensional space into zones using a plane on which the already input section line of the target object is located;
generating, according to a shape of each zone and a section line comprised in each zone, a geometry located within each zone, wherein the section line comprised in each zone is interpolated into the surface of the geometry;
extracting the surface of the geometry located within each zone to generate a sub-curved surface located within each zone, wherein a section line comprised in a zone where the sub-curved surface is located is interpolated into the sub-curved surface; and
splicing the sub-curved surfaces to obtain a curved surface model of the target object,
wherein after dividing the three-dimensional space into zones using the plane on which the already input section line of the target object is located, the method further comprises determining a type of each zone to process zones of a same type using a same processing method, and
wherein determining the type of each zone comprises:
determining that the zone is a body zone when section lines are comprised on two or more planes in all planes constituting a zone;
determining that the zone is an end zone when a section line is comprised on only one plane in all planes constituting a zone; and
determining that the zone is an empty zone when a section line is not comprised on any plane in all planes constituting a zone.