| 摘要 |
A method of restoring logical hierarchy of at least two two-dimensional objects, a first two-dimensional object having a first perimeter, a second two-dimensional object having a second perimeter, the first perimeter and the second perimeter comprising perimeter portions, each perimeter portion being a line connecting two extreme points of a respective perimeter portion, extreme points in the first perimeter being connected by respective lines in a first selected rotational direction, extreme points of the second perimeter being connected by respective lines in the first selected rotational direction, the method executed on a computing device, the method comprising: retrieving th first two-dimensional object and the second two-dimensional object; determining if these objects have a common perimeter portion. |
