公开(公告)号：US12198390B2

公开(公告)日：2025-01-14

申请号：US17371999

申请日：2021-07-09

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Pu Li ,  Fu Zhang ,  Xiaozhen Zheng

IPC: G06T9/00 ,  G06T7/62 ,  G06T9/40

Abstract: A three-dimensional data point encoding method, decoding method, and encoding device. The encoding method includes: determining maximum values of side lengths of a cuboid of three-dimensional data points to be encoded in three directions according to position coordinates of the three-dimensional data points to be encoded; performing at least one octree partition process on the cuboid, to obtain a plurality of first-type sub-blocks; performing at least one quadtree partition process or binary tree partition process on at least one first-type sub-block of the plurality of first-type sub-blocks; and encoding the three-dimensional data points to be encoded according to partition results of the cuboid.

公开(公告)号：US11512953B2

公开(公告)日：2022-11-29

申请号：US16704708

申请日：2019-12-05

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Fu Zhang ,  Mingyu Wang

IPC: G01C5/06 ,  B64C39/02 ,  G01C21/12 ,  G08G5/00 ,  G01C21/20

Abstract: A method for determining an altitude of a moving object includes obtaining pressure-dependent data from a plurality of sensors and computing the altitude of the moving object based on the pressure-dependent data from the plurality of sensors. Each of the sensors is mounted on the moving object with a respective primary orientation direction, and the primary orientation directions of at least two of the sensors are different.

公开(公告)号：US20210286079A1

公开(公告)日：2021-09-16

申请号：US17333573

申请日：2021-05-28

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Xiang Liu ,  Xiaoping Hong ,  Fu Zhang ,  Han Chen ,  Chenghui Long ,  Xiaofeng Feng

IPC: G01S17/87 ,  G01S17/931 ,  G05D1/02 ,  G01S7/00

Abstract: Disclosed herein are techniques for implementing a distributed sensor (LIDAR) system with a management system (e.g., a controller) that controls and interfaces with multiple sensors in the distributed sensor system. A representative management system can control an operational state (e.g., power on, reset, over-current protection, etc.), an operating mode (e.g., modes corresponding to varying levels of performance), etc. The management system can combine separate outputs from the individual sensors into a combined output (e.g., point cloud). The management system can assist installation of the sensors, manage a self-test and/or a self-calibration of the sensors, or a combination thereof.