Segmentation of ground-based laser scanning points from urban environment
First Claim
1. A computer-implemented method for providing object descriptors for objects in point cloud data for an urban environment by segmenting the point cloud data in a computer that is programmed to perform:
- obtaining, using a ground-based laser scanner, the point cloud data, wherein the point cloud data is for the urban environment;
in a pre-process phase, filtering out, in the computer, terrain points from the point cloud data using ground filtering;
after the pre-process phase, segmenting, in the computer, the point cloud data into two or more blocks;
combining, in the computer, objects that lie on neighboring adjacent blocks of the two or more blocks based on cell continuity;
providing, in the computer, object descriptors for the combined objects;
utilizing, in the computer, the object descriptors to process the point cloud data, and facilitate and output a scene interpretation of the urban environment.
1 Assignment
0 Petitions
Accused Products
Abstract
A method, apparatus, system, and article of manufacture provide object descriptors for objects in point cloud data for an urban environment by segmenting the point cloud data. Point cloud data for an urban environment is obtained using a ground-based laser scanner. Terrain points are filtered out from the point cloud data using ground filtering. The point cloud data is then segmented into two or more blocks. Objects that lie on neighboring adjacent blocks are combined. Object descriptors for the combined objects are then provided (e.g., to the user or a program used by the user).
36 Citations
20 Claims
-
1. A computer-implemented method for providing object descriptors for objects in point cloud data for an urban environment by segmenting the point cloud data in a computer that is programmed to perform:
-
obtaining, using a ground-based laser scanner, the point cloud data, wherein the point cloud data is for the urban environment; in a pre-process phase, filtering out, in the computer, terrain points from the point cloud data using ground filtering; after the pre-process phase, segmenting, in the computer, the point cloud data into two or more blocks; combining, in the computer, objects that lie on neighboring adjacent blocks of the two or more blocks based on cell continuity; providing, in the computer, object descriptors for the combined objects; utilizing, in the computer, the object descriptors to process the point cloud data, and facilitate and output a scene interpretation of the urban environment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An apparatus for providing object descriptors for objects in point cloud data for an urban environment by segmenting the point cloud data in a computer system comprising:
-
(a) a computer having a memory; and (b) an application executing on the computer, wherein the application is configured to; (1) obtain, using a ground-based laser scanner, the point cloud data, wherein the point cloud data is for the urban environment; (2) in a pre-process phase, filter out terrain points from the point cloud data using ground filtering; (3) after the pre-process phase, segment the point cloud data into two or more blocks; (4) combine objects that lie on neighboring adjacent blocks of the two or more blocks based on cell continuity; (5) provide object descriptors for the combined objects; (6) utilize the object descriptors to process the point cloud data, and facilitate an output a scene interpretation of the urban environment. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification