Patent ID: 11922659
Assignee: NEC SOLUTION INNOVATORS, LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 3:
4. The coordinate calculation apparatus according to claim 3, further comprising
a point cloud data generation unit configured to generate a point cloud data of the object,
in case that, in each of a plurality of images including an object, feature points to corresponding to images are extracted, the point cloud data generation means selects a pair image from the images which the feature points are extracted,
the point cloud data generation means, in each of the selected pair images, obtains the three-dimensional coordinates of the location of a camera that has taken the image and the rotation matrix from the camera matrix calculated in advance for the camera that has taken the image,
the point cloud data generation unit calculates the three-dimensional coordinates of the feature points corresponding to both of the selected pair images by using the three-dimensional coordinates of the camera location and the rotation matrix,
the point cloud data generation unit generates a point cloud data by using the feature points for which the three-dimensional coordinates are calculated.