CN106060406B - Photographing method and mobile terminal - Google Patents

Photographing method and mobile terminal Download PDF

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Publication number
CN106060406B
CN106060406B CN201610604719.5A CN201610604719A CN106060406B CN 106060406 B CN106060406 B CN 106060406B CN 201610604719 A CN201610604719 A CN 201610604719A CN 106060406 B CN106060406 B CN 106060406B
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image
camera
mobile terminal
frame
scene
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CN106060406A (en
Inventor
王康康
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/225Television cameras ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/232Devices for controlling television cameras, e.g. remote control ; Control of cameras comprising an electronic image sensor
    • H04N5/23216Control of parameters, e.g. field or angle of view of camera via graphical user interface, e.g. touchscreen
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/14Picture signal circuitry for video frequency region
    • H04N5/147Scene change detection

Abstract

The invention provides a photographing method and a mobile terminal, and relates to the technical field of communication. The method comprises the following steps: receiving a photographing function starting request input by a mobile terminal user; controlling the first camera to acquire images and display the images on a photographing preview interface, and controlling the second camera to continuously acquire images in a background; carrying out scene detection on a shooting scene where the mobile terminal is located to obtain a target shooting scene; controlling the second camera to continuously cache image data based on the target shooting scene; and when a photographing instruction input by the mobile terminal user is received, selecting a frame of image from the image data cached by the second camera to generate a photo. The problem of current shooting method the real-time nature of shooing not good, reduced user's experience of shooing is solved. The photo shooting method and the photo shooting device can rapidly acquire the photo when a shooting instruction input by a user is received, so that the shooting instantaneity is improved, and further the shooting experience of the user is improved.

Description

Photographing method and mobile terminal
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a photographing method and a mobile terminal.
Background
Nowadays, with the development and popularization of mobile terminals such as mobile phones, more and more users use mobile terminal cameras to take pictures. Moreover, in order to improve the quality of the shot picture, multiple frames of images are collected for synthesis in some scenes for obtaining the final picture. For example, when shooting night scenes or super-clear image quality, 3 to 5 frames of images are collected according to the situation to compose a final picture. Moreover, in some scenes, the requirements for camera parameters, such as the exposure degree, the exposure time, the gain, and the focusing of the camera, are inconsistent when capturing each image. For example, in a certain scene, the shooting mode of the camera needs to be adjusted to an HDR (High Dynamic Range) shooting mode, and at this time, an image with normal exposure needs to be acquired, and an image with under exposure and over exposure needs to be acquired. The existing photographing method is that the same camera of the mobile terminal is used for generating a preview picture and displaying the preview picture on a display interface of the mobile terminal, the picture is collected during photographing, and then a picture is synthesized by using collected multi-frame images.
However, a certain time is required for synthesizing one photo by using a plurality of images, so that a user needs to wait for a certain time to obtain a final photo after inputting a photographing instruction, the real-time photographing is not good, and the photographing experience of the user is reduced.
Disclosure of Invention
The embodiment of the invention provides a photographing method and a mobile terminal, and aims to solve the problems that the conventional photographing method is long in time consumption and affects the photographing experience of a user.
In one aspect, the present invention provides a photographing method, including:
receiving a photographing function starting request input by a mobile terminal user;
controlling the first camera to acquire images and display the images on a photographing preview interface, and controlling the second camera to continuously acquire images in a background;
carrying out scene detection on a shooting scene where the mobile terminal is located to obtain a target shooting scene;
controlling the second camera to continuously cache image data based on the target shooting scene;
and when a photographing instruction input by the mobile terminal user is received, selecting a frame of image from the image data cached by the second camera to generate a photo.
On the other hand, the present invention further provides a mobile terminal, including a first camera and a second camera, characterized in that the mobile terminal further includes:
the camera starting module is used for receiving a photographing function starting request input by the mobile terminal user;
the image acquisition module is used for controlling the first camera to acquire images and display the images on a photographing preview interface, and controlling the second camera to continuously acquire images in a background;
the shooting scene detection module is used for carrying out scene detection on the shooting scene where the mobile terminal is located to obtain a target shooting scene;
the image data caching module is used for controlling the second camera to continuously cache the image data based on the target shooting scene;
and the photo generation module is used for selecting one frame of image from the image data cached by the second camera to generate a photo when a photographing instruction input by the mobile terminal user is received.
In this way, in the embodiment of the present invention, after receiving a photographing function start request input by a mobile terminal user, the first camera is controlled to acquire images and display the images on a photographing preview interface, the second camera is controlled to continuously acquire images in a background, scene detection is performed on a photographing scene where the mobile terminal is located, a target photographing scene is obtained, the second camera is controlled to continuously cache image data based on the target photographing scene, and when a photographing instruction input by the mobile terminal user is received, a frame of image is selected from the image data cached by the second camera to generate a photo. Therefore, the shot picture can be rapidly acquired when the shooting instruction input by the user is received, the shooting instantaneity is improved, and the shooting experience of the user is further improved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a flowchart illustrating a photographing method according to a first embodiment of the present invention;
FIG. 2 is a flowchart of a photographing method according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a mobile terminal according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an image data caching module of a mobile terminal according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of an image data caching unit of a mobile terminal according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of a photo generation module of a mobile terminal according to a third embodiment of the present invention;
fig. 7 is a schematic structural diagram of another photo generation module of a mobile terminal according to a third embodiment of the present invention;
fig. 8 is a block diagram of a mobile terminal according to a fourth embodiment of the present invention;
fig. 9 is a schematic structural diagram of a mobile terminal in a fifth embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes a photographing method and a mobile terminal provided by the present invention in detail by taking several specific embodiments.
Example one
The embodiment of the invention provides a photographing method.
Referring to fig. 1, a flowchart of a photographing method in an embodiment of the present invention is shown.
Step 101, receiving a photographing function starting request input by the mobile terminal user.
In the embodiment of the present invention, the camera is a component having a photographing function in the mobile terminal. The mobile terminal may include, but is not limited to, a smart phone, a Tablet PC (Tablet Personal Computer, Tablet PC, Flat PC, Tablet, slides, PAD, etc.), a Personal Digital Assistant (PDA), a Digital camera, etc. having a photographing function.
In practical application, a user may input a photographing function starting request by clicking a camera icon in a display interface of the mobile terminal, or input a photographing function starting request by operating a shortcut key used for inputting the photographing function starting request in the mobile terminal, or input a photographing function starting request by operating an external device of the mobile terminal, or in other available manners, which is not limited in the embodiment of the present invention.
And step 102, controlling the first camera to acquire images and display the images on a photographing preview interface, and controlling the second camera to continuously acquire images in a background.
In practical applications, if the same camera is used alone to preview images while taking pictures, the preview experience of the user may be affected in a multi-frame image synthesis shooting mode such as a night view shooting mode. Therefore, in the embodiment of the invention, the first camera of the mobile terminal can be controlled to acquire the image and display the image on the photographing preview interface, and the second camera of the mobile terminal can be controlled to continuously acquire the image in the background. The second camera is independent of the first camera, so that in the multi-frame image synthesis shooting mode, if the second camera is used in the process of continuously acquiring images in the background, parameters such as the focal length and the exposure degree of the second camera need to be adjusted, and the parameters such as the focal length and the exposure degree of the first camera cannot be affected. The image collected by the first camera of the mobile terminal is not influenced by the second camera, and the image collected by the first camera is not influenced by the second camera.
In addition, in order to ensure that the difference between the viewing range corresponding to the image acquired by the first camera and the viewing range corresponding to the image continuously acquired by the second camera in the background is not large in the multi-frame image synthesis shooting mode, so that a user can conveniently adjust the viewing range of the second camera of the mobile terminal according to the image displayed on the preview interface, in the embodiment of the invention, the deviation between the viewing ranges of the second camera and the first camera of the same mobile terminal can be set to be within the preset deviation threshold range. The preset deviation threshold range may be set before this step, or before any step before this step, according to requirements, and the embodiment of the present invention is not limited thereto.
And 103, carrying out scene detection on the shooting scene where the mobile terminal is located to obtain a target shooting scene.
In the embodiment of the present invention, the first camera or the second camera, or the first camera and the second camera may be used to detect a shooting scene where the mobile terminal is located, and specifically, brightness, an object, and the like of the scene where the mobile terminal is located may be detected, which is not limited in the embodiment of the present invention. Of course, other devices may also be used to perform scene detection on the shooting scene where the mobile terminal is located, and the embodiment of the present invention is not limited thereto.
In the embodiment of the present invention, the scene types that the target shooting scene may specifically include may also be set before this step or before any step before this step according to requirements, for example, the target shooting scene includes a night scene shooting scene, a high definition shooting scene, a background blurring shooting scene, a general shooting scene, an indoor shooting scene, an outdoor shooting scene, and the like, which is not limited in the embodiment of the present invention. Then, scene detection is performed on the shooting scene where the mobile terminal is located, and further, the specific type of the target shooting scene where the mobile terminal is located is determined. In addition, scene conditions corresponding to different target shooting scene categories can be set. For example, it may be set that the target shooting scene in which the mobile terminal is located is determined to be a night scene shooting scene if it is detected that the illumination brightness of the scene in which the mobile terminal is located is lower than a preset illumination brightness threshold.
And 104, controlling the second camera to continuously cache image data based on the target shooting scene.
In the embodiment of the invention, after the target shooting scene where the mobile terminal is located is confirmed, the second camera of the mobile terminal can be controlled to continuously cache the image data based on the target shooting scene. In the embodiment of the present invention, before this step, or before any step before this step, specific processes and rules, etc. corresponding to different target shooting scenes and caching image data by the second camera may be set according to requirements, and the embodiment of the present invention is not limited thereto.
For example, if the target shooting scene where the mobile terminal is located is a normal shooting scene with normal light, the second camera of the mobile terminal may be controlled to cyclically generate image data and cache the image data at a certain time interval as a period based on the current view; and if the target shooting scene of the mobile terminal is a night scene shooting scene with dark light, the second camera needs to be controlled to respectively collect multiple frames of images under a normal exposure condition, and then the images are synthesized according to the rule of the corresponding night scene shooting scene to obtain the cache image data of the current target shooting scene. Moreover, the above operations may also be repeated at certain time intervals as a cycle, so that the second camera of the mobile terminal may be controlled to continuously buffer the image data based on the night scene shooting scene.
And 105, when a photographing instruction input by the mobile terminal user is received, selecting a frame of image from the image data cached by the second camera to generate a photo.
Specifically, the method and the device for photographing the image of the mobile terminal are used for inputting a photographing instruction through a photographing control in a display interface of the mobile terminal, or inputting the photographing instruction through a photographing key on the outer surface of the mobile terminal, or inputting the photographing instruction through an external device, or inputting the photographing instruction through other available modes, and the embodiment of the invention is not limited.
When the mobile terminal receives a photographing instruction input by a user, one frame of image can be selected from the image data cached by the second camera to generate a photo. If only one frame of image is in the image data cached by the second camera when a photographing instruction input by a user is received, the image is directly used as a generated photo. If the image data cached by the second camera includes multiple frames of images, a frame of image may be selected from the multiple frames of images according to a certain preset rule to generate a photo when a photographing instruction input by a user is received, where the preset rule may correspond to different target photographing scenes, and the different preset rules of the target photographing scenes may also be different, and may of course be the same. For example, it may be set that a newly generated frame of image generation photo is obtained from the current time and the image data cached before the current time; the parameters such as brightness and definition of each frame of image in the image data can be compared, and one frame of image with better performance or better meeting the user requirement is selected from the parameters to generate the photo, for example, the frame of image with the highest definition is selected to generate the photo.
In addition, after the photo for the current photographing instruction is generated, in order to avoid occupying a storage space, other cached image data may be deleted or deleted, and certainly, may not be deleted, which is not limited in this embodiment of the present invention.
In the embodiment of the invention, after a photographing function starting request input by a mobile terminal user is received, the first camera is controlled to acquire images and display the images on a photographing preview interface, the second camera is controlled to continuously acquire images in the background, scene detection is carried out on a photographing scene where the mobile terminal is located to obtain a target photographing scene, the second camera is controlled to continuously cache image data based on the target photographing scene, and when a photographing instruction input by the mobile terminal user is received, one frame of image is selected from the image data cached by the second camera to generate a photo. Therefore, the shot picture can be rapidly acquired when the shooting instruction input by the user is received, the shooting instantaneity is improved, and the shooting experience of the user is further improved.
Example two
The embodiment of the invention provides a photographing method.
Referring to fig. 2, a flowchart of a photographing method in an embodiment of the present invention is shown.
Step 201, receiving a photographing function starting request input by the mobile terminal user.
Step 202, controlling the first camera to acquire images and display the images on a photographing preview interface, and controlling the second camera to continuously acquire images in a background.
And 203, performing scene detection on the shooting scene where the mobile terminal is located to obtain a target shooting scene.
And step 204, determining a target shooting mode based on the target shooting scene.
In the embodiment of the present invention, the target shooting mode of the mobile terminal may be determined according to the target shooting scene where the mobile terminal is located, and a specific correspondence between the target shooting mode and the target shooting scene may be set before this step or before any step before this step according to a requirement, which is not limited in the embodiment of the present invention. For example, a target shooting mode corresponding to different target shooting scenes may be constructed in the mobile terminal, for example, in a night or a night shooting scene with dark light, the night scene shooting mode of the mobile terminal may be correspondingly started, or the shooting mode of the mobile terminal may be switched to the night scene shooting mode. In addition, in practical applications, in order to enable the effect of the pictures taken by the mobile terminal to meet the requirements of the user in different shooting scenes, various parameters of the second camera used for taking the pictures, such as parameters of focal length, exposure and the like, need to be adjusted correspondingly for the different shooting scenes, and a specific process of taking the pictures by using the second camera is adjusted at the same time, such as directly capturing one picture to generate the pictures or capturing multiple pictures to generate the pictures. Then, in the embodiment of the present invention, target shooting modes corresponding to different target shooting scenes may be set, where each target shooting mode includes various parameter requirements for the second camera and a specific process of taking a picture by using the second camera, and then when the target shooting mode of the mobile terminal is determined, parameters of the second camera and a specific process of taking a picture by using the second camera may be correspondingly determined.
In addition, when the photographing function of the mobile terminal is started, a default photographing mode is generally started, and in the embodiment of the invention, various parameters of the first camera and the second camera in the default photographing mode can be set to be consistent, and at the moment, the various parameters are normal values. Of course, each parameter of the first camera and each parameter of the second camera may also be inconsistent in the default shooting mode, and then each parameter of the first camera may be used as a normal value at this time, or each parameter of the second camera may be used as a normal value, and for this, the parameters may be set before this step or before any step before this step according to requirements, which is not limited in the embodiment of the present invention.
In addition, in the embodiment of the present invention, the shooting mode type specifically included in the target shooting mode may be set before this step or before any step before this step according to a requirement, and meanwhile, a target shooting scene corresponding to different target shooting modes may also be set, which is not limited to this embodiment of the present invention.
And step 205, controlling the second camera to continuously cache the image data based on the target shooting mode.
As previously mentioned, after the target photographing mode of the mobile terminal is determined, the picture can be taken with the second camera accordingly. Before generating the picture, the second camera needs to be controlled to continuously buffer the image data.
Specifically, the rule for the second camera to continuously buffer the image data may be set before this step or before any step before this step according to requirements corresponding to different target shooting modes, which is not limited in this embodiment of the present invention.
Optionally, in an embodiment of the present invention, step 205 may further include: and if the target shooting mode is a multi-frame image synthesis shooting mode, in the process of collecting images by the second camera, carrying out image synthesis on the collected images with preset frame numbers every time the images with preset frame numbers are collected, generating at least one frame of synthesized image and caching the synthesized image.
The multi-frame image synthesis shooting mode is a shooting mode in which a camera is required to collect multi-frame images to generate photos when shooting. For example, the HDR shooting mode is a multi-frame image synthesis shooting mode, and in the HDR shooting mode, a normally exposed image, an underexposed image, and an overexposed image may be respectively acquired, and then the three images are used to synthesize a picture taken at this time. In the embodiment of the invention, if the target shooting mode of the mobile terminal is the multi-frame image synthesis shooting mode, in the process of acquiring images by using the second camera of the mobile terminal, every time images with preset frame numbers are acquired, the acquired images with the preset frame numbers are synthesized, and at least one frame of synthesized image is generated and cached. The preset number and the collected image category corresponding to different multi-frame image synthesis shooting modes may be set before the step or before any step before the step according to requirements, which is not limited in the embodiment of the present invention.
In an embodiment of the present invention, the image captured by the second camera is an image generated by the second camera according to the current view, for example, the normally exposed image is an image generated by the first camera according to the view thereof under the normal exposure condition, the underexposed image is an image generated by the first camera according to the view thereof under the underexposed condition, and the overexposed image is an image generated by the first camera according to the view thereof under the overexposure condition. Specifically, the normal exposure, the underexposure, and the overexposure may be set before the step according to the requirement, or before any step before the step according to the requirement, and the embodiment of the present invention is not limited thereto.
In the embodiment of the present invention, if the camera is in the multi-frame image synthesis shooting mode, in order to avoid starting to acquire an image and generate a synthesized image when receiving a shooting instruction input by a user, at least one frame of synthesized image corresponding to the multi-frame image synthesis shooting mode may be generated directly according to the second camera of the mobile terminal. Furthermore, in the embodiment of the present invention, if the camera is in the multi-frame image synthesis shooting mode, at least one frame of synthesis image corresponding to the multi-frame image synthesis shooting mode is generated according to the second camera of the mobile terminal, and specifically, the number of generated synthesis images may be set before this step or before any step before this step according to requirements, which is not limited in this embodiment of the present invention. Moreover, it may be set that the composite image slice is generated within a certain time threshold before the current time, and is stored in the mobile terminal in a cache form, or may be directly stored locally in the mobile terminal, or stored in a cloud server, etc., which is not limited in this embodiment of the present invention, and the composite image that is stored outside the certain time threshold before the current time may be automatically removed. Specifically, the time for generating the composite image, and whether or not to save the composite image and the storage location for saving the composite image may be set before this step or before any step before this step, which is not limited in this embodiment of the present invention.
For example, if it is set that two synthetic images are always cached, it is necessary to cyclically capture the images required for generating one synthetic image and generate the synthetic image, and if two synthetic images are generated currently, an earlier generated one of the two synthetic images generated before is removed every time a subsequent synthetic image is generated, or a later generated one of the two synthetic images generated before may be removed, which is not limited in the embodiment of the present invention. For example, for HDR capture mode, it is necessary to capture a normally exposed image, an underexposed image and an overexposed image to synthesize a composite image. If two composite images are set to be generated, the normally exposed image, the underexposed image and the overexposed image can be collected circularly, and a frame of composite image is circularly synthesized. And if two or more composite images have been synthesized, then when synthesizing a new composite image, only one previously synthesized composite image may be retained, while the other composite images are purged, thereby ensuring that only two composite images are always cached.
Optionally, in an embodiment of the present invention, the multi-frame Image synthesis shooting mode includes at least one of a high dynamic range shooting mode, an Electronic Image Stabilization (EIS) shooting mode, a night view shooting mode, a background blurring shooting mode, and an ultra-definition shooting mode.
In the EIS shooting mode, normally exposed images, images with 3 frames of exposure time being one fourth of the initial exposure time and images with four times of the gain can be respectively collected by the second camera, then a composite image is generated by using the collected images, and if the images are obtained in a circulating mode, multi-frame composite images can be obtained through synthesis. In the night scene shooting mode and the ultra-clear image quality shooting mode, a second camera can be used for respectively collecting images of multiple frames under a normal exposure condition, and then the images are synthesized to obtain a synthesized image in the current shooting mode. In the background blurring shooting mode, the second camera can be used for respectively acquiring the normally focused image and the image with the focal length at infinity, and then the images are synthesized to obtain a synthesized image. Of course, in the embodiment of the present invention, the image to be captured in each multi-frame image synthesis shooting mode specifically needs to be captured, and the time interval for capturing each frame image may be set before this step, or before any step before this step, according to requirements, and the embodiment of the present invention is not limited thereto. Furthermore, the multi-frame image synthesis shooting mode may include any shooting mode that requires a picture to be obtained by multi-frame image synthesis, and is not limited to the above shooting modes, and the embodiment of the present invention is not limited thereto.
In addition, the method for combining the multiple frame images into one combined image can adopt any one of the existing image combining algorithms, and the image combining algorithms of different multiple frame image combining shooting modes can be the same or different. In the embodiment of the present invention, before this step, or before any step before this step, the image synthesis algorithm used in each multi-frame image synthesis shooting mode may be set according to a requirement, and the embodiment of the present invention is not limited thereto. When the mobile terminal is in a certain multi-frame image synthesis shooting mode, images can be collected circularly according to preset requirements, and a frame of synthesis image is synthesized circularly according to a picture synthesis algorithm corresponding to the multi-frame image synthesis shooting mode.
And step 206, when a photographing instruction input by the mobile terminal user is received, selecting a first image meeting the image parameter condition from the at least one frame of synthesized image to generate the photo based on a preset image parameter condition.
The preset image parameter conditions may include conditions for parameters of sharpness, brightness, hue, and the like of the image. In the embodiment of the present invention, before this step, or before any step before this step, the specific parameters included in the image parameter conditions and the conditions of each parameter may be set according to the requirements, and the embodiment of the present invention is not limited thereto.
Then, in the embodiment of the present invention, a first image satisfying the image parameter condition may be selected from the composite images generated in step 206 to generate a photo based on the preset image parameter condition.
In addition, the first image may be subjected to some optimization processing to generate the photo, such as denoising, edge enhancement, and the like, or of course, the first image may be directly used as the photo without any processing performed on the first image, and a specific process for generating the photo by using the first image may be set before this step or before this step according to requirements, which is not limited in the embodiment of the present invention.
Optionally, in an embodiment of the present invention, step 206 may further include: and selecting a second image with the storage time as the preset time from the at least one frame of synthesized image to generate the photo based on the storage time sequence of the at least one frame of synthesized image.
In the embodiment of the present invention, the second image with the storage time being a preset time may be selected from the composite images to generate the photo based on the storage time sequence of each composite image. Before this step, or before any step before this step, a specific value of the preset time may be set according to a requirement, and the embodiment of the present invention is not limited.
Similarly, the second image may be subjected to some optimization processing to generate the photo, such as denoising, edge enhancement, and the like, or of course, the second image may be directly used as the photo without any processing performed on the second image, and a specific process for generating the photo by using the second image may be set before this step or before this step according to requirements, which is not limited in the embodiment of the present invention.
In the embodiment of the invention, after a photographing function starting request input by a mobile terminal user is received, the first camera is controlled to acquire images and display the images on a photographing preview interface, the second camera is controlled to continuously acquire images in the background, scene detection is carried out on a photographing scene where the mobile terminal is located to obtain a target photographing scene, the second camera is controlled to continuously cache image data based on the target photographing scene, and when a photographing instruction input by the mobile terminal user is received, one frame of image is selected from the image data cached by the second camera to generate a photo. Therefore, the shot picture can be rapidly acquired when the shooting instruction input by the user is received, the shooting instantaneity is improved, and the shooting experience of the user is further improved.
Moreover, in the embodiment of the present invention, the target shooting mode may be determined according to a target shooting scene of the mobile terminal, and the second camera of the mobile terminal is controlled to continuously cache the image data based on the target shooting mode. In addition, the first image meeting the image parameter condition can be selected from the composite image to generate the photo based on the preset image parameter condition. Thereby, the photographing experience of the user can be further improved.
EXAMPLE III
A mobile terminal according to an embodiment of the present invention is described in detail.
Referring to fig. 3, a schematic structural diagram of a mobile terminal in the embodiment of the present invention is shown.
The mobile terminal 30 of the embodiment of the present invention includes: a camera starting module 301, configured to receive a photographing function starting request input by a user of the mobile terminal. And the image acquisition module 302 is configured to control the first camera to acquire an image and display the image on a photographing preview interface, and control the second camera to continuously acquire the image in the background. And a shooting scene detection module 303, configured to perform scene detection on the shooting scene where the mobile terminal is located, so as to obtain a target shooting scene. And an image data caching module 304, configured to control the second camera to continuously cache image data based on the target shooting scene. The photo generation module 305 is configured to select a frame of image from the image data cached by the second camera to generate a photo when a photographing instruction input by the mobile terminal user is received.
Preferably, a block diagram of the structure of the image data caching module 304 is shown in fig. 4, and the image data caching module 304 includes the following modules: a target shooting mode determination unit 3041 for determining a target shooting mode based on the target shooting scene. An image data caching unit 3042 configured to control the second camera to continuously cache image data based on the target shooting mode determined by the target shooting mode determining unit.
Preferably, a structural block diagram of the image data buffering unit 3042 is shown in fig. 5, and the image data buffering unit 3042 includes the following modules: a synthesized image generating subunit 30421, configured to, if the target shooting mode obtained by the target shooting mode determining unit is a multi-frame image synthesis shooting mode, perform image synthesis on the acquired images with the preset frame number every time an image with a preset frame number is acquired by the second camera in an image acquisition process of the second camera, generate at least one frame of synthesized image, and perform caching.
Preferably, a structural block diagram of the photo generation module 305 is shown in fig. 6, and the photo generation module 305 includes the following modules:
the first photo generation module unit 3051 is configured to select, based on a preset image parameter condition, a first image that satisfies the image parameter condition from the at least one frame of synthesized image generated by the synthesized image generation subunit to generate the photo.
Preferably, a structural block diagram of the photo generation module 305 is shown in fig. 7, and the photo generation module 305 includes the following modules:
the second photo generation module unit 3052 is configured to select, from the at least one frame of synthesized image generated by the synthesized image generation subunit, a second image with a storage time being a preset time to generate the photo, based on the storage time sequence of the at least one frame of synthesized image.
In the embodiment of the invention, after a photographing function starting request input by a mobile terminal user is received, the first camera is controlled to acquire images and display the images on a photographing preview interface, the second camera is controlled to continuously acquire images in the background, scene detection is carried out on a photographing scene where the mobile terminal is located to obtain a target photographing scene, the second camera is controlled to continuously cache image data based on the target photographing scene, and when a photographing instruction input by the mobile terminal user is received, one frame of image is selected from the image data cached by the second camera to generate a photo. Therefore, the shot picture can be rapidly acquired when the shooting instruction input by the user is received, the shooting instantaneity is improved, and the shooting experience of the user is further improved.
Moreover, in the embodiment of the present invention, the target shooting mode may be determined according to a target shooting scene of the mobile terminal, and the second camera of the mobile terminal is controlled to continuously cache the image data based on the target shooting mode. In addition, the first image meeting the image parameter condition can be selected from the composite image to generate the photo based on the preset image parameter condition. Thereby, the photographing experience of the user can be further improved.
Example four
A mobile terminal according to an embodiment of the present invention is described in detail.
Referring to fig. 8, a block diagram of a mobile terminal in an embodiment of the present invention is shown.
The mobile terminal 800 shown in fig. 8 includes: at least one processor 801, memory 802, at least one network interface 804, and a user interface 803. The various components in the mobile terminal 800 are coupled together by a bus system 805. It is understood that the bus system 805 is used to enable communications among the components connected. The bus system 805 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 805 in fig. 8, and the mobile terminal 800 further includes a camera assembly 806, the camera assembly 806 including a first camera and a second camera.
The user interface 803 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.
It will be appreciated that the memory 802 in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a Read-only memory (ROM), a programmable Read-only memory (PROM), an erasable programmable Read-only memory (erasabprom, EPROM), an electrically erasable programmable Read-only memory (EEPROM), or a flash memory. The volatile memory may be a Random Access Memory (RAM) which functions as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (staticiram, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (syncronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced synchronous SDRAM (ESDRAM), synchronous link SDRAM (SLDRAM), and direct memory bus SDRAM (DRRAM). The memory 802 of the subject systems and methods described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 802 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 8021 and application programs 8022.
The operating system 8021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application program 8022 includes various application programs, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program implementing a method according to an embodiment of the present invention may be included in application program 8022.
In the embodiment of the present invention, the processor 801 is configured to receive a photographing function starting request input by a user of the mobile terminal by calling a program or an instruction stored in the memory 802, specifically, a program or an instruction stored in the application program 8022; controlling the first camera to acquire images and display the images on a photographing preview interface, and controlling the second camera to continuously acquire images in a background; carrying out scene detection on a shooting scene where the mobile terminal is located to obtain a target shooting scene; controlling the second camera to continuously cache image data based on the target shooting scene; and when a photographing instruction input by the mobile terminal user is received, selecting a frame of image from the image data cached by the second camera to generate a photo.
The methods disclosed in the embodiments of the present invention described above may be implemented in the processor 801 or implemented by the processor 801. The processor 801 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 801. The Processor 801 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 802, and the processor 801 reads the information in the memory 802, and combines the hardware to complete the steps of the method.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
Optionally, as another embodiment, the processor 801 is further configured to: determining a target shooting mode based on the target shooting scene; and controlling the second camera to continuously cache the image data based on the target shooting mode.
Optionally, as another embodiment, the processor 801 is further configured to: and if the target shooting mode is a multi-frame image synthesis shooting mode, in the process of collecting images by the second camera, carrying out image synthesis on the collected images with preset frame numbers every time the images with preset frame numbers are collected, generating at least one frame of synthesized image and caching the synthesized image.
Optionally, the processor 801 is further configured to: and selecting a first image meeting the image parameter condition from the at least one frame of synthesized image to generate the photo based on a preset image parameter condition.
Optionally, the processor 801 is further configured to: and selecting a second image with the storage time as the preset time from the at least one frame of synthesized image to generate the picture based on the storage time sequence of the at least one frame of synthesized image.
The multi-frame image synthesis shooting mode comprises at least one of a high dynamic range shooting mode, an electronic image stabilization shooting mode, a night scene shooting mode, a background blurring shooting mode and an ultra-clear image quality shooting mode.
In the embodiments, in order to avoid repetition, each process implemented by the mobile terminal is not described herein again.
According to the photographing method and the mobile terminal, after a photographing function starting request input by a mobile terminal user is received, the first camera is controlled to collect images and display the images on a photographing preview interface, the second camera is controlled to continuously collect the images on the background, scene detection is carried out on a photographing scene where the mobile terminal is located, a target photographing scene is obtained, the second camera is controlled to continuously cache image data based on the target photographing scene, and when a photographing instruction input by the mobile terminal user is received, one frame of image is selected from the image data cached by the second camera to generate a photo. Therefore, the shot picture can be rapidly acquired when the shooting instruction input by the user is received, the shooting instantaneity is improved, and the shooting experience of the user is further improved.
EXAMPLE five
Fig. 9 is a schematic structural diagram of a mobile terminal according to another embodiment of the present invention. Specifically, the mobile terminal 900 in fig. 9 may be a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), or a vehicle-mounted computer.
The mobile terminal 900 in fig. 9 includes a Radio Frequency (RF) circuit 910, a memory 920, an input unit 930, a display unit 940, a processor 960, an audio circuit 970, a wifi (wireless fidelity) module 980, a power supply 990, and the mobile terminal 900 further includes a photographing component 950, where the photographing component 950 includes a first camera and a second camera.
The input unit 930 may be used, among other things, to receive numeric or character information input by a user and to generate signal inputs related to user settings and function control of the mobile terminal 900. Specifically, in the embodiment of the present invention, the input unit 930 may include a touch panel 931. The touch panel 931, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 931 (for example, a user may operate the touch panel 931 by using a finger, a stylus pen, or any other suitable object or accessory), and drive the corresponding connection device according to a preset program. Alternatively, the touch panel 931 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts it to touch point coordinates, and sends the touch point coordinates to the processor 960, where the touch controller can receive and execute commands sent by the processor 960. In addition, the touch panel 931 may be implemented by various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 931, the input unit 930 may also include other input devices 932, and the other input devices 932 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.
Among other things, the display unit 940 may be used to display information input by the user or information provided to the user and various menu interfaces of the mobile terminal 900. The display unit 940 may include a display panel 941, and the display panel 941 may be optionally configured in the form of an LCD or an Organic Light-Emitting Diode (OLED).
It should be noted that the touch panel 931 may overlay the display panel 941 to form a touch display screen, and when the touch display screen detects a touch operation on or near the touch display screen, the touch display screen transmits the touch operation to the processor 960 to determine the type of the touch event, and then the processor 960 provides a corresponding visual output on the touch display screen according to the type of the touch event.
The touch display screen comprises an application program interface display area and a common control display area. The arrangement modes of the application program interface display area and the common control display area are not limited, and can be an arrangement mode which can distinguish two display areas, such as vertical arrangement, left-right arrangement and the like. The application interface display area may be used to display an interface of an application. Each interface may contain at least one interface element such as an icon and/or widget desktop control for an application. The application interface display area may also be an empty interface that does not contain any content. The common control display area is used for displaying controls with high utilization rate, such as application icons like setting buttons, interface numbers, scroll bars, phone book icons and the like.
The processor 960 is a control center of the mobile terminal 900, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the mobile terminal 900 and processes data by operating or executing software programs and/or modules stored in the first memory 921 and calling data stored in the second memory 922, thereby integrally monitoring the mobile terminal 900. Optionally, processor 960 may include one or more processing units.
In the embodiment of the present invention, the processor 960 is configured to receive a photographing function starting request input by a user of the mobile terminal by invoking a software program and/or a module stored in the first memory 921 and/or data stored in the second memory 922; controlling the first camera to acquire images and display the images on a photographing preview interface, and controlling the second camera to continuously acquire images in a background; carrying out scene detection on a shooting scene where the mobile terminal is located to obtain a target shooting scene; controlling the second camera to continuously cache image data based on the target shooting scene; and when a photographing instruction input by the mobile terminal user is received, selecting a frame of image from the image data cached by the second camera to generate a photo.
Optionally, as another embodiment, the processor 960 is further configured to: determining a target shooting mode based on the target shooting scene; and controlling the second camera to continuously cache the image data based on the target shooting mode.
Optionally, as another embodiment, the processor 960 is further configured to: and if the target shooting mode is a multi-frame image synthesis shooting mode, in the process of collecting images by the second camera, carrying out image synthesis on the collected images with preset frame numbers every time the images with preset frame numbers are collected, generating at least one frame of synthesized image and caching the synthesized image.
Optionally, the processor 960 is further configured to: and selecting a first image meeting the image parameter condition from the at least one frame of synthesized image to generate the photo based on a preset image parameter condition.
Optionally, the processor 960 is further configured to: and selecting a second image with the storage time as the preset time from the at least one frame of synthesized image to generate the photo based on the storage time sequence of the at least one frame of synthesized image.
The multi-frame image synthesis shooting mode comprises at least one of a high dynamic range shooting mode, an electronic image stabilization shooting mode, a night scene shooting mode, a background blurring shooting mode and an ultra-clear image quality shooting mode.
As can be seen, in the embodiment of the present invention, after receiving a photographing function start request input by a user of a mobile terminal, controlling a first camera to collect images and display the images on a photographing preview interface, controlling a second camera to continuously collect images in a background, performing scene detection on a photographing scene where the mobile terminal is located, to obtain a target photographing scene, controlling the second camera to continuously cache image data based on the target photographing scene, and when receiving a photographing instruction input by the user of the mobile terminal, selecting one frame of image from the image data cached by the second camera to generate a photo. Therefore, the shot picture can be rapidly acquired when the shooting instruction input by the user is received, the shooting instantaneity is improved, and the shooting experience of the user is further improved.
Moreover, in the embodiment of the present invention, the target shooting mode may be determined according to a target shooting scene of the mobile terminal, and the second camera of the mobile terminal is controlled to continuously cache the image data based on the target shooting mode. In addition, the first image meeting the image parameter condition can be selected from the composite image to generate the photo based on the preset image parameter condition. Thereby, the photographing experience of the user can be further improved.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (12)

1. A photographing method is applied to a mobile terminal with a first camera and a second camera, and is characterized by comprising the following steps:
receiving a photographing function starting request input by a mobile terminal user;
controlling the first camera to acquire images and display the images on a photographing preview interface, and controlling the second camera to continuously acquire images in a background;
carrying out scene detection on a shooting scene where the mobile terminal is located to obtain a target shooting scene;
controlling the second camera to continuously cache image data based on the target shooting scene;
when a photographing instruction input by the mobile terminal user is received, selecting a frame of image from the image data cached by the second camera to generate a photo;
wherein the controlling the second camera to continuously cache the image data based on the target shooting scene comprises: under the condition that the target shooting scene of the mobile terminal is a common shooting scene, controlling the second camera to circularly generate image data and cache the image data based on the current view by taking a preset time interval as a period;
under the condition that the target shooting scene is a night scene shooting scene, controlling the second camera to respectively collect multi-frame images under a normal exposure condition, and synthesizing the multi-frame images to obtain cache image data of the target shooting scene;
wherein the controlling the second camera to continuously cache the image data based on the target shooting scene comprises:
under the condition that the target shooting scene is a common shooting scene, controlling the second camera to circularly generate image data and cache the image data based on the current view by taking a preset time interval as a period;
under the condition that the target shooting scene is a night scene shooting scene, controlling the second camera to respectively collect multi-frame images under a normal exposure condition, and synthesizing the multi-frame images to obtain cache image data of the target shooting scene;
and the deviation between the view range corresponding to the image acquired by the first camera and the view range corresponding to the image continuously acquired by the second camera at the background is within a preset deviation threshold range.
2. The method of claim 1, wherein the step of controlling the second camera to continuously buffer image data based on the target shooting scene comprises:
determining a target shooting mode based on the target shooting scene;
and controlling the second camera to continuously cache the image data based on the target shooting mode.
3. The method according to claim 2, wherein the step of controlling the second camera to continuously buffer image data based on the target shooting mode comprises:
and if the target shooting mode is a multi-frame image synthesis shooting mode, in the process of collecting images by the second camera, carrying out image synthesis on the collected images with preset frame numbers every time the images with preset frame numbers are collected, generating at least one frame of synthesized image and caching the synthesized image.
4. The method of claim 3, wherein the step of selecting a frame of image from the buffered image data of the second camera to generate the photo comprises:
and selecting a first image meeting the image parameter condition from the at least one frame of synthesized image to generate the photo based on a preset image parameter condition.
5. The method of claim 3, wherein the step of selecting a frame of image from the buffered image data of the second camera to generate the photo comprises:
and selecting a second image with the storage time as the preset time from the at least one frame of synthesized image to generate the photo based on the storage time sequence of the at least one frame of synthesized image.
6. The method of claim 3, wherein the multi-frame image synthesis shooting mode comprises at least one of a high dynamic range shooting mode, an electronic image stabilization shooting mode, a night view shooting mode, a background blurring shooting mode, and an ultra-clear image quality shooting mode.
7. A mobile terminal comprises a first camera and a second camera, and is characterized in that the mobile terminal further comprises:
the camera starting module is used for receiving a photographing function starting request input by the mobile terminal user;
the image acquisition module is used for controlling the first camera to acquire images and display the images on a photographing preview interface, and controlling the second camera to continuously acquire images in a background;
the shooting scene detection module is used for carrying out scene detection on the shooting scene where the mobile terminal is located to obtain a target shooting scene;
the image data caching module is used for controlling the second camera to continuously cache the image data based on the target shooting scene;
the photo generation module is used for selecting a frame of image from the image data cached by the second camera to generate a photo when a photographing instruction input by the mobile terminal user is received;
wherein the image data caching module is further configured to: under the condition that the target shooting scene is a common shooting scene, controlling the second camera to circularly generate image data and cache the image data based on the current view by taking a preset time interval as a period;
under the condition that the target shooting scene is a night scene shooting scene, controlling the second camera to respectively collect multi-frame images under a normal exposure condition, and synthesizing the multi-frame images to obtain cache image data of the target shooting scene; and the deviation between the view range corresponding to the image acquired by the first camera and the view range corresponding to the image continuously acquired by the second camera at the background is within a preset deviation threshold range.
8. The mobile terminal of claim 7, wherein the image data caching module comprises:
a target shooting mode determination unit configured to determine a target shooting mode based on the target shooting scene;
and the image data caching unit is used for controlling the second camera to continuously cache the image data based on the target shooting mode determined by the target shooting mode determining unit.
9. The mobile terminal according to claim 8, wherein the image data buffering unit comprises:
and the synthesized image generation subunit is configured to, if the target shooting mode acquired by the target shooting mode determination unit is a multi-frame image synthesis shooting mode, perform image synthesis on the acquired images with the preset frame number every time an image with a preset frame number is acquired by the second camera in an image acquisition process of the second camera, and generate and cache at least one frame of synthesized image.
10. The mobile terminal of claim 9, wherein the photo generation module comprises:
and the first photo generation module unit is used for selecting a first image meeting the image parameter condition from the at least one frame of synthesized image generated by the synthesized image generation subunit to generate the photo based on a preset image parameter condition.
11. The mobile terminal of claim 9, wherein the photo generation module comprises:
and the second photo generation module unit is used for selecting a second image with the storage time as the preset time from the at least one frame of synthesized image generated by the synthesized image generation subunit to generate the photo based on the storage time sequence of the at least one frame of synthesized image.
12. The mobile terminal of claim 7, wherein the multi-frame image synthesis shooting mode comprises at least one of a high dynamic range shooting mode, an electronic image stabilization shooting mode, a night view shooting mode, a background blurring shooting mode, and an ultra-clear image quality shooting mode.
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