Mapping processing method and device

摘要

A mapping method includes; mapping first and second models, each represented by polygonal elements of meshes and including a same number of regions, to a first and a second spherical surfaces, respectively; approximating boundaries of the regions by curves and moving nodes based on the curve approximation; associating the nodes on the boundary of first sphere with points on the boundary of the second sphere; moving the nodes other than the nodes on the boundary by minimizing changes of shapes and areas of the polygonal elements under a constraint that the nodes on the boundary of the first sphere are placed at positions corresponding to the associated points on the second sphere; and calculating a point in the second model for each of the nodes in the first model, from the corresponding node after the movement on the first sphere and corresponding polygonal elements on the second sphere.

主权项

1. A non-transitory storage medium storing a program that causes a computer to execute a process comprising:
mapping, to a first spherical surface, a first model represented by polygonal elements of a first mesh and including one or more regions; mapping, to a second spherical surface, a second model represented by polygonal elements of a second mesh and including one or more regions of which the number is the same as the first model; approximating a boundary of the one or more regions mapped to the first spherical surface by a curve and moving, based on the curve approximation, nodes other than nodes on the boundary of the one or more regions mapped to the first spherical surface; approximating a boundary of the one or more regions mapped to the second spherical surface by a curve and moving, based on the curve approximation, nodes other than nodes on the boundary of the one or more regions mapped to the second spherical surface; associating the nodes on the boundary of the one or more regions mapped to the first spherical surface with a point on the boundary of the one or more regions mapped to the second spherical surface; moving the nodes other than the nodes on the boundary of the one or more regions mapped to the first spherical surface by minimizing an evaluation value calculated according to a first evaluation equation including an item for suppressing changes of the shapes and areas of the polygonal elements of the first mesh under a constraint that the nodes on the boundary of the one or more regions mapped to the first spherical surface are placed at positions located on the first spherical surface and corresponding to the associated points on the second spherical surface; and calculating a point in the second model for each of the nodes in the first model based on the corresponding node on the first spherical surface after the movement and corresponding polygonal elements on the second spherical surface.