公开(公告)号：US20230127303A1

公开(公告)日：2023-04-27

申请号：US18085246

申请日：2022-12-20

Applicant: Magic Leap, Inc.

Inventor： Ali Shahrokni ,  Daniel Olshansky ,  Xuan Zhao ,  Rafael Domingos Torres ,  Joel David Holder ,  Keng-Sheng Lin ,  Ashwin Swaminathan ,  Anush Mohan

IPC: G06T19/00 ,  G06T7/73 ,  G06F3/01

Abstract: A cross reality system enables any of multiple devices to efficiently and accurately access previously stored maps and render virtual content specified in relation to those maps. The cross reality system may include a cloud-based localization service that responds to requests from devices to localize with respect to a stored map. The request may include one or more sets of feature descriptors extracted from an image of the physical world around the device. Those features may be posed relative to a coordinate frame used by the local device. The localization service may identify one or more stored maps with a matching set of features. Based on a transformation required to align the features from the device with the matching set of features, the localization service may compute and return to the device a transformation to relate its local coordinate frame to a coordinate frame of the stored map.

公开(公告)号：US20210264674A1

公开(公告)日：2021-08-26

申请号：US17185706

申请日：2021-02-25

Applicant: Magic Leap, Inc.

Inventor： Ali Shahrokni ,  Keng-Sheng Lin ,  Xuan Zhao ,  Christian Ivan Robert Moore ,  Ashwin Swaminathan

IPC: G06T19/00 ,  G06T7/70 ,  H04L29/06

Abstract: A system form localizing an electronic device with dynamic buffering identifies, from the buffer, a first set of features that is extracted from a first image captured by the electronic device and receives, at the system, a second set of features that is extracted from a second image captured by the electronic device. The system further determines a first characteristic for the first set of features and a second characteristic for the second set of features and determines whether a triggering condition for dynamically changing a size of the buffer is satisfied based at least in part upon the first characteristic for the first set of features and the second characteristic for the second set of features.