公开(公告)号：US20180073858A1

公开(公告)日：2018-03-15

申请号：US15411911

申请日：2017-01-20

Applicant: BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD.

Inventor： Chengliang Deng ,  Yu Ma ,  Kaiwen Feng ,  Yibing Liang ,  Bocong Liu ,  Zhuo Chen

IPC: G01B11/00

CPC classification number: G01B11/002 ,  G01B11/24 ,  G01S1/00 ,  G01S7/486 ,  G01S7/4912 ,  G01S17/42 ,  G01S17/89 ,  G01S17/93

Abstract: A method and an apparatus for processing laser point cloud data includes obtaining laser point data to be used by a data receiver comprising an acquisition time; determining a timestamp for representing the acquisition time, and splitting the timestamp into a base timestamp and an offset timestamp; and storing the base timestamp and compressed laser point cloud data. Laser point cloud data output by a laser radar is compressed and comprises only offset timestamps corresponding to respective laser points. The base timestamp and the offset timestamp may be added to obtain the required synchronization precision timestamp, and the data is synchronized. The processing speed of a CPU or GPU for the laser point cloud data is improved while the timestamp precision reaches the precision required by synchronization of the laser point cloud data, and storage space is saved.

公开(公告)号：US20180052783A1

公开(公告)日：2018-02-22

申请号：US15410680

申请日：2017-01-19

Applicant: BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD.

Inventor： Liming Xia ,  Jingchao Feng ,  Quan Wang ,  Ning Qu ,  Wei He ,  Chengliang Deng ,  Kaiwen Feng ,  Zhuo Chen

IPC: G06F13/16 ,  G06F12/1072 ,  G06F12/02

Abstract: The present application discloses a method and an apparatus for transmitting a message. The method of an embodiment comprises: dividing a shared memory area allocated by an operating system into a plurality of memory blocks for storing messages having different priorities; dividing each memory block in the plurality of memory blocks into at least one memory unit having a successive serial number; determining, from the plurality of memory blocks according to a priority of a to-be-transmitted message, a target memory block for storing the to-be-transmitted message; and writing the to-be-transmitted message into a memory unit of the target memory block. This embodiment implements message transmission based on priorities of the messages, and improves the control security of an intelligent control system.