Camera switching method for terminal, and terminal

Patent metadata

Field	Value
Publication number	US-2021203836-A1
Application number	US-201817262742-A
Country	US
Kind code	A1
Filing date	Jul 27, 2018
Priority date	Jul 27, 2018
Publication date	Jul 1, 2021
Grant date	—

Abstract

Embodiments relate to the field of terminals and disclose a camera switching method for a terminal, and the terminal. In those embodiments, when the terminal is installed with a plurality of cameras, automatic and dynamic switching between the cameras may be implemented based on a to-be-photographed object, thereby improving a photographing effect of the to-be-photographed object. In those embodiment, the terminal may display, in response to a first operation of enabling a photographing function by a user, a first photographing picture captured by a first camera, where the first photographing picture includes a to-be-photographed object. If the to-be-photographed object cannot be displayed completely in the first photographing picture, the terminal may switch from the first photographing picture to a second photographing picture captured by the second camera, and disabling the first camera, where an FOV of the second camera is larger than an FOV of the first camera.

First claim

What is claimed is:

1 - 6 . (canceled)

7 . A camera switching method for a terminal, wherein the terminal comprises at least two cameras, the at least two cameras comprise a first camera, and the method comprises:
displaying, by the terminal in response to a first operation of enabling a photographing function by a user, a first photographing picture captured by the first camera, wherein the first photographing picture comprises a to-be-photographed object; if the to-be-photographed object can be displayed completely in the first photographing picture, determining, by the terminal, a to-be-switched-to target camera based on a size and/or a location of the to-be-photographed object in the first photographing picture; and switching, by the terminal, from the first photographing picture to a photographing picture captured by the target camera, and disabling the first camera.

8 . The camera switching method for the terminal according to claim 7 , wherein the at least two cameras further comprise a second camera, a field of view (FOV) of the second camera is larger than a FOV of the first camera, and the determining, by the terminal, a to-be-switched-to target camera based on a location of the to-be-photographed object in the first photographing picture comprises:
determining, by the terminal through calculation, whether the to-be-photographed object is displayed completely in a preset best photographing region in the first photographing picture, wherein the best photographing region is located in a center of the first photographing picture; and if the to-be-photographed object cannot be displayed completely in the best photographing region, determining, by the terminal, the second camera as the target camera.

9 . The camera switching method for the terminal according to claim 7 , wherein the at least two cameras further comprise a second camera and a third camera, an FOV of the second camera is larger than an FOV of the first camera, an FOV of the third camera is smaller than the FOV of the first camera, and determining, by the terminal, the to-be-switched-to target camera based on a size of the to-be-photographed object in the first photographing picture comprises:
determining, by the terminal through calculation, a target ratio of the to-be-photographed object in the first photographing picture; if the target ratio is greater than an upper limit of a preset target ratio range, determining, by the terminal, the second camera as the target camera; and if the target ratio is less than a lower limit of a preset target ratio range, determining, by the terminal, the third camera as the target camera.

10 . The camera switching method for the terminal according to claim 7 , wherein the at least two cameras further comprise a second camera and a third camera, an FOV of the second camera is larger than an FOV of the first camera, an FOV of the third camera is smaller than the FOV of the first camera, and the determining, by the terminal, a to-be-switched-to target camera based on a size and a location of the to-be-photographed object in the first photographing picture comprises:
determining, by the terminal, a location relationship between the first photographing picture, a second photographing picture, and a third photographing picture, wherein the second photographing picture is a photographing picture that is determined through calculation based on the first photographing picture and that is photographed when the second camera is enabled, and the third photographing picture is a photographing picture that is determined through calculation based on the first photographing picture and that is photographed when the third camera is enabled; and determining, by the terminal, the to-be-switched-to target camera based on the size and the location of the to-be-photographed object in the first photographing picture, a size and a location of the to-be-photographed object in the second photographing picture, and a size and a location of the to-be-photographed object in the third photographing picture.

11 . The camera switching method for the terminal according to claim 10 , wherein determining, by the terminal, the to-be-switched-to target camera based on the size and the location of the to-be-photographed object in the first photographing picture, the size and the location of the to-be-photographed object in the second photographing picture, and the size and the location of the to-be-photographed object in the third photographing picture comprises:
determining, by the terminal, at least one candidate camera from the first camera, the second camera, and the third camera, wherein a photographing picture of the candidate camera can completely display the to-be-photographed object; and determining, by the terminal, the target camera from the candidate camera, wherein a target ratio of the to-be-photographed object in the photographing picture of the target camera meets a preset condition.

12 . The camera switching method for the terminal according to claim 7 , wherein the target camera is a second camera, and a field of view FOV of the second camera is larger than the FOV of the first camera;
the switching, by the terminal, from the first photographing picture to a photographing picture captured by the target camera comprises: enabling, by the terminal, the second camera in a background to capture a second photographing picture; gradually zooming in, by the terminal, content in the second photographing picture through digital zooming; when the zoomed-in content in the second photographing picture is consistent with content in the first photographing picture, disabling, by the terminal, the first camera and displaying the zoomed-in second photographing picture in a foreground; and gradually restoring, by the terminal, to a standard focal length for capturing the second photographing picture until the terminal completely displays the second photographing picture.

13 . The camera switching method for the terminal according to claim 7 , wherein the target camera is a third camera, and a field of view (FOV) of the third camera is smaller than the FOV of the first camera; and switching, by the terminal, from the first photographing picture to a photographing picture captured by the target camera comprises:
enabling, by the terminal, the third camera in a background to capture a third photographing picture; gradually zooming in, by the terminal, content in the first photographing picture through digital zooming; and when the zoomed-in content in the first photographing picture is consistent with content in the third photographing picture, disabling, by the terminal, the first camera and displaying the third photographing picture in a foreground.

14 . A terminal, comprising:
a touchscreen, wherein the touchscreen comprises a touch-sensitive surface and a display; one or more processors; one or more memories; a first camera and a second camera; and one or more computer programs, wherein the one or more computer programs are stored in the one or more memories, the one or more computer programs comprise an instruction; and when the instruction is executed by the terminal, the terminal is enabled to perform the following steps: displaying in response to a first operation of enabling a photographing function by a user, a first photographing picture captured by the first camera, wherein the first photographing picture comprises a to-be-photographed object; and if the to-be-photographed object cannot be displayed completely in the first photographing picture, switching from the first photographing picture to a second photographing picture captured by the second camera, and disabling the first camera, wherein a field of view (FOV) of

Assignees

• Huawei Tech Co Ltd

Inventors

• Qin Chao
• Li Yuanyou
• Jia Zhiping

Classifications

• H04N23/61 Primary

  based on recognised objects · CPC title

• H04N23/69

  Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming · CPC title

• H04N23/60 Primary

  Control of cameras or camera modules · CPC title

• H04N23/64

  Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image · CPC title

• H04N23/67

  Focus control based on electronic image sensor signals · CPC title