公开(公告)号：US20210168279A1

公开(公告)日：2021-06-03

申请号：US16497727

申请日：2017-04-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wenmei GAO ,  Guowei OUYANG ,  Yunchao ZHANG

IPC: H04N5/232

Abstract: An image correction terminal provided starts a camera, to enter a default shooting mode; the terminal previews a photographed object, to obtain a preview image; the terminal determines, based on the preview image, whether the photographed object is of a document type; and the terminal corrects a photographed object image when the photographed object is of the document type, where the photographed object image is an image obtained after the photographed object is photographed. As a result, the terminal can effectively detect a scene type, and avoid system power consumption caused due to frequent detection of a type of the photographed object.

公开(公告)号：US20210014420A1

公开(公告)日：2021-01-14

申请号：US17041696

申请日：2018-03-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lei SONG ,  Xin GUO ,  Xiaomeng CHEN ,  Yunchao ZHANG ,  Xin CHEN

IPC: H04N5/232

Abstract: An intelligent assistant control method is provided: starting, by a terminal device, a lens; displaying, by the terminal device, a preview interface on a display screen, where the preview interface includes a to-be-photographed object; and if the terminal device determines that the preview interface has been stably displayed for preset duration, displaying, by the terminal device, first prompt information of a photographing mode in the preview interface, where the first prompt information is used to recommend a first photographing mode to a user, and the first photographing mode is determined by the terminal device based on scene information of the to-be-photographed object.

公开(公告)号：US20190355122A1

公开(公告)日：2019-11-21

申请号：US16473678

申请日：2016-12-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yunchao ZHANG ,  Wenmei GAO

IPC: G06T7/13 ,  G06T7/90

Abstract: A method for detecting a document edge is provided. The method includes: obtaining multi-color channel data of each pixel in a color image (103), where the multi-color channel data includes two-dimensional coordinate values of the pixel and a value of the pixel on each color channel; performing line detection on the multi-color channel data of each pixel in the color image (105); and detecting a quadrilateral based on preset condition and some or all of straight lines obtained by performing the line detection (107). According to the foregoing method, a success rate of detecting a document edge can be increased.