公开(公告)号：US20230089845A1

公开(公告)日：2023-03-23

申请号：US18070862

申请日：2022-11-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wensen Feng ,  Huan Zhang ,  Jun Cao ,  Jiange Ge ,  Zhongwei Tang ,  Jiangwei Li

IPC: G06T7/73 ,  G01C21/00 ,  G06T7/12 ,  G06T11/00

Abstract: A visual localization method includes obtaining an image captured by a terminal device; obtaining two-dimensional line feature information of the image that includes at least one of information about a boundary between a building and a non-building or information about a boundary between a non-building and a non-building; and determining a localization pose of the terminal device based on location information of the terminal device, magnetometer angle deflection information of the terminal device, a satellite map, and the two-dimensional line feature information.

公开(公告)号：US20190355108A1

公开(公告)日：2019-11-21

申请号：US16347146

申请日：2016-12-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Gang Chen ,  Zhongwei Tang ,  Wei Luo

IPC: G06T5/50 ,  H04N5/247 ,  H04N5/262 ,  H04N9/04 ,  H04N5/265 ,  H04N9/78 ,  H04N5/235 ,  G06T3/40

Abstract: This application provides an imaging method. The imaging method is applied to an imaging apparatus including a color camera and a black-and-white camera, and resolution of the black-and-white camera is higher than resolution of the color camera; and the imaging method includes: obtaining a zoom magnification; simultaneously capturing a color image and a black-and-white image of a target scene, where resolution of the black-and-white image is higher than resolution of the color image; performing cropping processing on the black-and-white image and the color image separately based on the zoom magnification, where the cropped black-and-white image and the cropped color image have a same field of view; and merging the cropped color image and the cropped black-and-white image to obtain an output image of the target scene. Therefore, according to the optical imaging method provided by embodiments of this application, the obtained output image can have a better optical zoom capability.

公开(公告)号：US10262400B2

公开(公告)日：2019-04-16

申请号：US15522930

申请日：2014-10-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Gang Chen ,  Zhongwei Tang ,  Wei Luo

IPC: G06K9/00 ,  G06T5/00 ,  H04N5/357

Abstract: The present disclosure discloses an image processing method including acquiring a distorted image of a photographed object; selecting according to a mapping relationship between at least one group of lens optical distortion models and reprojection error values, a lens optical distortion model whose reprojection error value is less than a specified threshold; and correcting, by using the lens optical distortion model, an optical distortion of the acquired distorted image, and obtaining an image with the optical distortion corrected disclosure.

公开(公告)号：US20180150973A1

公开(公告)日：2018-05-31

申请号：US15572375

申请日：2016-03-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhongwei Tang ,  Huanhuan Ao ,  Kang Qian ,  Wei Luo

IPC: G06T7/73

Abstract: A method for calculating a dual-camera relative position provided in the present disclosure includes obtaining M groups of dual-camera images, where each group of dual-camera images in the M groups includes two images obtained by photographing a same scene by dual cameras at the same time, screening the M groups of dual-camera images to obtain Q groups of dual-camera images that can be used to calculate the dual-camera relative position, obtaining dual-camera relative position parameters corresponding to each group of dual-camera images in the Q groups according to each group of dual-camera images in the Q groups, and obtaining optimal dual-camera relative position parameters from the Q groups of dual-camera relative position parameters. Therefore, the dual-camera relative position can be calculated when a scene is relatively difficult to recognize.

公开(公告)号：US20170330308A1

公开(公告)日：2017-11-16

申请号：US15522930

申请日：2014-10-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Gang Chen ,  Zhongwei Tang ,  Wei Luo

IPC: G06T5/00

CPC classification number: G06T5/002 ,  G06T5/006 ,  H04N5/3572

Abstract: The present disclosure discloses an image processing method including acquiring a distorted image of a photographed object; selecting according to a mapping relationship between at least one group of lens optical distortion models and reprojection error values, a lens optical distortion model whose reprojection error value is less than a specified threshold; and correcting, by using the lens optical distortion model, an optical distortion of the acquired distorted image, and obtaining an image with the optical distortion corrected disclosure.

公开(公告)号：US10810720B2

公开(公告)日：2020-10-20

申请号：US16347146

申请日：2016-12-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Gang Chen ,  Zhongwei Tang ,  Wei Luo

IPC: H04N5/235 ,  G06T5/50 ,  G06T3/40 ,  H04N5/247 ,  H04N5/262 ,  H04N5/265 ,  H04N9/04 ,  H04N9/78 ,  G06T5/00

Abstract: This application provides an imaging method. The imaging method is applied to an imaging apparatus including a color camera and a black-and-white camera, and resolution of the black-and-white camera is higher than resolution of the color camera; and the imaging method includes: obtaining a zoom magnification; simultaneously capturing a color image and a black-and-white image of a target scene, where resolution of the black-and-white image is higher than resolution of the color image; performing cropping processing on the black-and-white image and the color image separately based on the zoom magnification, where the cropped black-and-white image and the cropped color image have a same field of view; and merging the cropped color image and the cropped black-and-white image to obtain an output image of the target scene. Therefore, according to the optical imaging method provided by embodiments of this application, the obtained output image can have a better optical zoom capability.

公开(公告)号：US10559090B2

公开(公告)日：2020-02-11

申请号：US15572375

申请日：2016-03-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhongwei Tang ,  Huanhuan Ao ,  Kang Qian ,  Wei Luo

IPC: G06T7/73 ,  G06T3/00 ,  H04N13/204

Abstract: A method for calculating a dual-camera relative position provided in the present disclosure includes obtaining M groups of dual-camera images, where each group of dual-camera images in the M groups includes two images obtained by photographing a same scene by dual cameras at the same time, screening the M groups of dual-camera images to obtain Q groups of dual-camera images that can be used to calculate the dual-camera relative position, obtaining dual-camera relative position parameters corresponding to each group of dual-camera images in the Q groups according to each group of dual-camera images in the Q groups, and obtaining optimal dual-camera relative position parameters from the Q groups of dual-camera relative position parameters. Therefore, the dual-camera relative position can be calculated when a scene is relatively difficult to recognize.