公开(公告)号：US20240233375A1

公开(公告)日：2024-07-11

申请号：US18583700

申请日：2024-02-21

Applicant: Meta Platforms Technologies, LLC

Inventor： Alexandru-Eugen ICHIM ,  Sarthak RAY ,  Alexander SORKINE HORNUNG ,  Gioacchino NORIS ,  Gaurav CHAURASIA ,  Jan OBERLÄNDER

IPC: G06V20/20 ,  G06F3/01 ,  G06T7/73 ,  G06T15/20 ,  G06T19/00

CPC classification number: G06V20/20 ,  G06F3/013 ,  G06T7/74 ,  G06T15/205 ,  G06T19/006 ,  G06T2207/10028

Abstract: A system generates a plurality of spatial points based on depth measurements of physical objects. The system determines, based on the plurality of spatial points, an occupancy score for each voxel within a plurality of voxels. The system identifies, based on a gaze of the user, a first set of occupied voxels that are in a field of view of the user and a second set of occupied voxels that are outside the field of view of the user. The system updates the occupancy scores of the first set of occupied voxels by temporally decaying one or more of the plurality of spatial points within the first set of occupied voxels. The system maintains the occupancy scores of the second set of occupied voxels. The system detects intrusions in a predefined subspace within a physical space based on the updated occupancy scores of the first set of occupied voxels.

公开(公告)号：US20240193872A1

公开(公告)日：2024-06-13

申请号：US18415053

申请日：2024-01-17

Applicant: Meta Platforms Technologies, LLC

Inventor： Alexandru-Eugen ICHIM ,  Matthew James ALDERMAN ,  Alexander SORKINE HORNUNG ,  Manuel WERLBERGER ,  Gaurav CHAURASIA ,  Jan OBERLÄNDER

IPC: G06T19/00 ,  G06T7/593

CPC classification number: G06T19/003 ,  G06T7/593 ,  G06T2207/10012

Abstract: In particular embodiments, a computing system may divide at least a portion of a physical space surrounding a user into a plurality of three-dimensional (3D) regions, wherein each of the 3D regions is associated with an area of a plurality of areas in a plane. The system may generate estimated locations of features of objects in the portion of the physical space. Based on the estimated locations, the system may determine an occupancy state of each of the plurality of 3D regions. Then based on the occupancy states of the plurality of 3D regions, the system may determine that one or more of the plurality of areas have respective airspaces that are likely unoccupied by objects.

公开(公告)号：US20240046590A1

公开(公告)日：2024-02-08

申请号：US18489390

申请日：2023-10-18

Applicant: Meta Platforms Technologies, LLC

Inventor： James Allan BOOTH ,  Gaurav CHAURASIA ,  Alexandru-Eugen ICHIM ,  Alex LOCHER ,  Gioacchino NORIS ,  Alexander Sorkine HORNUNG ,  Manuel WERLBERGER

IPC: G06T19/00 ,  G06T15/04 ,  G06T17/20

CPC classification number: G06T19/006 ,  G06T15/04 ,  G06T17/20

Abstract: A mixed reality (MR) simulation system includes a console and a head mounted device (HMD). The MR system captures stereoscopic images from a real-world environment using outward-facing stereoscopic cameras mounted to the HMD. The MR system preprocesses the stereoscopic images to maximize contrast and then extracts a set of features from those images, including edges or corners, among others. For each feature, the MR system generates one or more two-dimensional (2D) polylines. Then, the MR system triangulates between 2D polylines found in right side images and corresponding 2D polylines found in left side images to generate a set of 3D polylines. The MR system interpolates between 3D vertices included in the 3D polylines or extrapolates additional 3D vertices, thereby generating a geometric reconstruction of the real-world environment. The MR system may map textures derived from the real-world environment onto the geometric representation faster than the geometric reconstruction is updated.