IP Library › Granted Patent US 12,243,167
Granted Patent B2
US 12,243,167 · App. 17/970,810 · Granted Mar 4, 2025

Three-dimensional mapping using disparate visual datasets

Inventors: Sean Gorman (Louisville, CO); Christopher Helm (Salida, CO); Pramukta Kumar (Austin, TX)
Assignee: Snap Inc.
G06T17/20G06T3/4007G06T3/4038
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Quick Facts
Patent No.
US 12,243,167
App. No.
17/970,810
Granted
Mar 4, 2025
Kind
B2
Abstract

A three-dimensional (3D) mapping system can be configured to generate a 3D map of a real-world environment using annotation of large image data sets, in which terrestrial imagery can be programmatically labeled with accurate labels using remotely sensed overhead image data. The 3D mapping system can implement photogrammetry to create a point cloud. Each pixel in the point cloud can be classified based on a consensus of each frame. The point cloud can be co-registered to a remotely sensed reference dataset to provide precise spatial coordinates for each pixel. Different patches of point clouds can be stitched together to provide a complete 3D map for a given area, such as a downtown area of a city.

Claims (38)

1. A method comprising:

identifying terrestrial source image data generated using a plurality of client devices;

identifying aerial based image data that is generated from an orthogonal perspective relative to the terrestrial source image data;

generating enhanced terrestrial source image data by correlating points of the terrestrial source image data and the aerial based image data; and

generating a three-dimensional map from the enhanced terrestrial source image data, the 3D map comprising stitched portions of enhanced terrestrial source image data sets from different client devices of the plurality of client devices, the stitched portions of the enhanced terrestrial source image data sets projected on the 3D map with colors or shading corresponding to the different client devices.

2. The method of claim 1 , wherein the terrestrial source image data comprises a plurality of point clouds.

3. The method of claim 2 , wherein the plurality of point clouds are generated by applying an imaging scheme to video sequences generated by the plurality of client devices.

4. The method of claim 3 , wherein the imaging scheme is a photometric imaging scheme that generates point cloud data from image data.

5. The method of claim 1 , wherein the aerial based image data is generated by aerial vehicles.

6. The method of claim 5 , wherein the aerial based image data comprises aerial lidar data that images a ground from a top-down perspective.

7. The method of claim 1 , further comprising: enhancing the terrestrial source image data by performing densification to add image details using interpolation.

8. The method of claim 7 , wherein a machine learning scheme is trained to perform densification to the terrestrial source image data.

9. The method of claim 1 , further comprising:

stitching structure from motion (SfM) point clouds associated with the portions of the enhanced terrestrial source image data sets without correlating the SfM point clouds with each other; and

generating a blended 3D point cloud based on the SfM point clouds.

10. The method of claim 1 , wherein the correlating points comprises applying a point co-registration scheme to correlate of the terrestrial source image data and the aerial based image data.

11. A system comprising:

one or more processors of a machine; and

at least one memory storing instructions that, when executed by the one or more processors, cause the machine to perform operations comprising:

identifying terrestrial source image data generated using a plurality of client devices;

identifying aerial based image data that is generated from an orthogonal perspective relative to the terrestrial source image data;

generating enhanced terrestrial source image data by correlating points of the terrestrial source image data and the aerial based image data; and

generating a three-dimensional map from the enhanced terrestrial source image data, the 3D map comprising stitched portions of enhanced terrestrial source image data sets from different client devices of the plurality of client devices, the stitched portions of the enhanced terrestrial source image data sets projected on the 3D map with colors or shading corresponding to the different client devices.

12. The system of claim 11 , wherein the terrestrial source image data comprises a plurality of point clouds.

13. The system of claim 12 , wherein the plurality of point clouds are generated by applying an imaging scheme to video sequences generated by the plurality of client devices.

14. The system of claim 13 , wherein the imaging scheme is a photometric imaging scheme that generates point cloud data from image data.

15. The system of claim 11 , wherein the aerial based image data is generated by aerial vehicles.

16. The system of claim 15 , wherein the aerial based image data comprises aerial lidar data that images a ground from a top-down perspective.

17. The system of claim 11 , further comprising: enhancing the terrestrial source image data by performing densification to add image details using interpolation.

18. The system of claim 17 , wherein a machine learning scheme is trained to perform densification to the terrestrial source image data.

19. The system of claim 11 , further comprising:

stitching structure from motion (SfM) point clouds associated with the portions of the enhanced terrestrial source image data sets without correlating the SfM point clouds with each other; and

generating a blended 3D point cloud based on the SfM point clouds.

20. A non-transitory machine-storage media embodying instructions that, when executed by a machine, cause the machine to perform operations comprising:

identifying terrestrial source image data generated using a plurality of client devices;

identifying aerial based image data that is generated from an orthogonal perspective relative to the terrestrial source image data;

generating enhanced terrestrial source image data by correlating points of the terrestrial source image data and the aerial based image data; and

generating a three-dimensional map from the enhanced terrestrial source image data, the 3D map comprising stitched portions of enhanced terrestrial source image data sets from different client devices of the plurality of client devices, the stitched portions of the enhanced terrestrial source image data sets projected on the 3D map with colors or shading corresponding to the different client devices.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 21, 2022
From: GORMAN, SEAN; HELM, CHRISTOPHER; KUMAR, PRAMUKTA
To: SNAP INC.
Reel/Frame 061494/0712 →
Continuity (2)
Provisional Application 63335552 · Apr 27, 2022
Related Publication 20230351690A1 · Nov 2, 2023
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