| 摘要 |
This invention relates to a computer-implemented method of creating a representation of the surface of an object from a point cloud comprising data points. Each point defines a position on the surface of an object. The method comprises fitting trend lines (<B>1003</B>, <B>1005</B>, <B>1007</B>) to the data points, wherein a trend line represents a surface contour of the object. Intersection points (in subcells <B>1001d</B> and <B>1001b</B>) between trend lines are determined wherein an intersection point represents a corner feature of the surface of the object. An output comprising data defining the trend lines and intersection points to represent the surface of the object is produced. The object may be a building, typically in a model of a town or city. |
