公开(公告)号：US20230102804A1

公开(公告)日：2023-03-30

申请号：US18077026

申请日：2022-12-07

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

Inventor： Xiyan LIU ,  Junjie CAI ,  Kai ZHONG ,  Jianzhong YANG ,  Deguo XIA ,  Tongbin ZHANG ,  Zhen LU

IPC: G06V10/24 ,  G06V30/16 ,  G06V10/774 ,  G06V10/77

Abstract: A method of rectifying a text image, a training method, an electronic device, and a medium, which relate to a field of an artificial intelligence technology, in particular to fields of computer vision, deep learning technology, intelligent transportation and high-precision maps. An exemplary implementation includes: performing, based on a gating strategy, a plurality of first layer-wise processing on a text image to be rectified, so as to obtain respective feature maps of a plurality of layer levels, wherein each of the feature maps includes a text structural feature related to the text image to be rectified, and the gating strategy is configured to increase an attention to the text structural feature; and performing a plurality of second layer-wise processing on the respective feature maps of the plurality of layer levels, so as to obtain a rectified text image corresponding to the text image to be rectified.

公开(公告)号：US20230052842A1

公开(公告)日：2023-02-16

申请号：US17976367

申请日：2022-10-28

Applicant: Beijing Baidu Netcom Science Technology Co., Ltd.

Inventor： Junjie CAI ,  Kai ZHONG ,  Jianzhong YANG ,  Deguo XIA ,  Tongbin ZHANG ,  Zhen LU

IPC: G06T7/70 ,  G06V10/44 ,  G06V20/56

Abstract: The present disclosure provides a method and apparatus for processing an image. A specific implementation includes: acquiring a top view of a road; identifying a position of a lane line from the top view; cutting the top view into at least two areas, and determining, according to the position of the lane line in each area, a width of a lane in the each area and an average width of the lane in the top view; calculating a first perspective correction matrix by optimizing a first loss function, the first loss function being used to represent a difference between the width of the lane in the each area and the average width of the lane in the top view; and performing a lateral correction on the top view through the first perspective correction matrix to obtain a first corrected image.

公开(公告)号：US20230184564A1

公开(公告)日：2023-06-15

申请号：US18077896

申请日：2022-12-08

Applicant: Beijing Baidu Netcom Science Technology Co., Ltd.

Inventor： Shougang SHEN ,  Kai ZHONG ,  Dingfu ZHOU ,  Junjie CAI ,  Jianzhong YANG ,  Zhen LU ,  Tongbin ZHANG

IPC: G01C21/00 ,  G01C21/32 ,  G06T7/55 ,  G06T7/70

CPC classification number: G01C21/3848 ,  G01C21/32 ,  G06T7/55 ,  G06T7/70 ,  G06T2207/10016 ,  G06T2207/10028 ,  G06T2207/30244

Abstract: Provided are a high-precision map construction method, an electronic device, and a storage medium, relating to the field of high-precision map technology and, in particular, to autonomous driving technology. The implementation solution includes: calculating a pose of a camera at each position point according to a pre-acquired video; calculating an absolute depth of each keypoint in the pre-acquired video according to the pose of the camera at each position point; constructing, according to the absolute depth of each keypoint in the video, a corresponding three-dimensional point cloud of each pixel point in the pre-acquired video; and constructing, according to the corresponding three-dimensional point cloud of each pixel point in the pre-acquired video, a high-precision map corresponding to the pre-acquired video.

公开(公告)号：US20230063099A1

公开(公告)日：2023-03-02

申请号：US17804081

申请日：2022-05-25

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

Inventor： Junjie CAI ,  Kai ZHONG ,  Jianzhong YANG ,  Zhen LU ,  Tongbin ZHANG

IPC: G01C21/00 ,  G01C21/30 ,  G01C21/36 ,  G06V10/44

Abstract: Provided are a method and apparatus for correcting positioning information, an electronic device and a storage medium, which relate to the field of artificial intelligence, in particular, to intelligent transportation technology and image processing technology. The specific implementation solution includes steps described below. A to-be-corrected image and positioning information of the to-be-corrected image are acquired. A target candidate reference image matching the to-be-corrected image is selected from candidate reference images having accurate positioning information. The positioning information of the to-be-corrected image is corrected according to accurate positioning information of the target candidate reference image. According to the solution of the present disclosure, the positioning information of the to-be-corrected image can be quickly corrected, and a guarantee is provided for accurately updating a navigation map by using the to-be-corrected image subsequently.

公开(公告)号：US20230052072A1

公开(公告)日：2023-02-16

申请号：US17973871

申请日：2022-10-26

Applicant: Beijing Baidu Netcom Science Technology Co., Ltd.

Inventor： Qingyuan JIA ,  Junjie CAI ,  Kai ZHONG ,  Jianzhong YANG ,  Tongbin ZHANG ,  Zhen LU

IPC: G06T7/30 ,  G06T7/10

Abstract: A point cloud registration method, apparatus, device, and storage medium are provided. The method includes: acquiring target point cloud data; dividing the target point cloud data into a plurality of point cloud sets; determining a coincidence degree between every two point cloud sets and determining a fixed point cloud set and a registration point cloud set from two point cloud sets with a coincidence degree between the two point cloud sets being greater than a preset threshold; determining a target registration matrix between the fixed point cloud set and the registration point cloud set; and performing registration of the fixed point cloud set with the registration point cloud set according to the target registration matrix.