CN113747080A

CN113747080A - Shooting preview method, shooting preview device, electronic equipment and medium

Info

Publication number: CN113747080A
Application number: CN202111154476.7A
Authority: CN
Inventors: 林燕芝
Original assignee: Vivo Mobile Communication Hangzhou Co Ltd
Current assignee: Vivo Mobile Communication Hangzhou Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2021-12-03
Anticipated expiration: 2041-09-29
Also published as: CN113747080B

Abstract

The application discloses a shooting preview method, a shooting preview device, electronic equipment and a medium, and belongs to the technical field of camera shooting. The method comprises the following steps: receiving a first input of a user to a preview control on a shooting preview interface; displaying a target historical preview image frame in response to the first input; the target history preview image frame comprises at least one frame of history preview image frame which is cached after shooting preview is started.

Description

Shooting preview method, shooting preview device, electronic equipment and medium

Technical Field

The application belongs to the technical field of camera shooting, and particularly relates to a shooting preview method, a shooting preview device, electronic equipment and a medium.

Background

With the development of terminal technology, people can shoot by using camera application in the terminal at any time and any place. At present, after a camera application is opened, a camera starts to acquire pictures, and the pictures acquired in real time are synchronously displayed to a user on a screen.

However, in the shooting process, the user often cannot click the shooting button in time, so that it is difficult to capture the wonderful picture concerned by the user.

Disclosure of Invention

An object of the embodiments of the present application is to provide a shooting preview method, a shooting preview apparatus, an electronic device, and a medium, which can solve the problem that it is difficult to capture an evanescent user-focused screen during shooting.

In a first aspect, an embodiment of the present application provides a shooting preview method, including: receiving a first input of a user to a preview control on a shooting preview interface; displaying a target historical preview image frame in response to the first input; the target history preview image frame comprises at least one frame of history preview image frame which is cached after shooting preview is started.

In a second aspect, an embodiment of the present application provides a shooting preview device, including: the receiving module is used for receiving first input of a user to a preview control on a shooting preview interface; a display module to display a target history preview image frame in response to the first input; the target history preview image frame comprises at least one frame of history preview image frame which is cached after shooting preview is started.

In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instructions stored on the memory and executable on the processor, and when executed by the processor, the program or instructions implement the steps of the method according to the first aspect.

In a fourth aspect, embodiments of the present application provide a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the method according to the first aspect.

In a fifth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method according to the first aspect.

In the embodiment of the application, a first input of a user to a preview control on a shooting preview interface is received; displaying a target historical preview image frame in response to the first input; the target history preview image frame comprises at least one frame of history preview image frame which is cached after shooting and previewing are started, so that a user can call the cached history preview image frame for viewing through first input of a preview control, more shooting selection spaces are obtained, the user can conveniently determine shooting contents and carry out subsequent image shooting based on the history preview image frame, and the problem that a picture which is watched by the user and is lost immediately is difficult to capture in the shooting process is solved.

Drawings

Fig. 1 is a flowchart of a shooting preview method provided according to an embodiment of the present application;

fig. 2 is a second flowchart of a shooting preview method according to an embodiment of the present application;

fig. 3 is a third flowchart of a shooting preview method provided according to an embodiment of the present application;

fig. 4 is a fourth flowchart of a shooting preview method provided according to an embodiment of the present application;

fig. 5 is a fifth flowchart of a shooting preview method provided according to an embodiment of the present application;

fig. 6 is a sixth flowchart of a shooting preview method provided according to an embodiment of the present application;

fig. 7a is one of schematic diagrams of a shooting preview interface in a shooting preview method provided according to an embodiment of the present application;

fig. 7b is a second schematic diagram of a shooting preview interface in the shooting preview method according to the embodiment of the present application;

fig. 7c is a third schematic diagram of a shooting preview interface in the shooting preview method provided in the embodiment of the present application;

fig. 7d is a fourth schematic diagram of a shooting preview interface in the shooting preview method provided in the embodiment of the present application;

fig. 7e is a fifth schematic diagram of a shooting preview interface in the shooting preview method provided in the embodiment of the present application;

fig. 7f is a sixth schematic view of a shooting preview interface in the shooting preview method provided in the embodiment of the present application;

fig. 7g is a seventh schematic diagram of a shooting preview interface in the shooting preview method provided in the embodiment of the present application;

fig. 7h is an eighth schematic diagram of a shooting preview interface in the shooting preview method provided in the embodiment of the present application;

fig. 7i is a ninth schematic diagram of a shooting preview interface in the shooting preview method provided in the embodiment of the present application;

fig. 7j is a tenth schematic diagram of a shooting preview interface in the shooting preview method provided in the embodiment of the present application;

fig. 8 is one of schematic structural diagrams of a shooting preview device provided according to an embodiment of the present application;

FIG. 9 is a schematic structural diagram of an electronic device provided in accordance with an embodiment of the present application;

fig. 10 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The shooting preview method provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings by specific embodiments and application scenarios thereof.

As shown in fig. 1, an embodiment of the present application provides a shooting preview method, which may be performed by a shooting preview device, which may be a terminal device, a component in a terminal device, an integrated circuit, or a chip. The embodiment of the present application describes a shooting preview method provided in the embodiment of the present application by taking an example in which a terminal device executes the shooting preview method, where the method includes the following steps:

step 110: a first input of a user to a preview control on a capture preview interface is received.

After a user opens a camera application program in terminal equipment, the terminal equipment foreground runs the camera application program and displays a shooting preview interface, wherein the shooting preview interface can be an interface for displaying preview image frames collected by a camera of the terminal equipment after the camera application program is started, and the user can shoot images or videos based on the preview image frames displayed on the shooting preview interface.

In an implementation manner, the preview image frame displayed on the shooting preview interface may be an original image acquired by a camera, that is, the terminal device displays the original image acquired by the camera on the shooting preview interface, and simultaneously caches the original image acquired by the camera in a background.

In another implementation, the preview image frame displayed on the shooting preview interface may also be an image obtained by processing an original image acquired by a camera, for example, the terminal device performs image reduction, resolution reduction, image clipping, or the like on the original image acquired by the camera, displays the processed image on the shooting preview interface, and caches the original image acquired by the camera in a background.

Optionally, an image stream shooting preview mode is provided in an embodiment of the present application, for example, a user may open a camera application on an electronic device, click a "stream mode" control, and enter a stream mode camera. In the streaming mode, the shooting preview interface only displays the common image with the specified parameters, namely the preview image, acquired in real time. At the moment, an image sensor in the camera outputs the acquired image stream in real time, and a common image with specified parameters in the image stream is directly displayed on a shooting preview interface as a preview image. Or, the common image with the designated parameters in the image stream is processed by image reduction, resolution reduction or image cutting, and the processed image is displayed on a shooting preview interface as a preview image for the user to preview. Meanwhile, the common image is cached in an image frame queue of the background, image acquisition of different image parameters (such as exposure parameters) is carried out in a preview frame capture interval (namely, an image acquisition period), and the acquired images with different image parameters are respectively cached in a plurality of different image frame queues of the background. It will be appreciated that the image frame queue buffered to the background may be used for output of a photograph or video. An "image stream" may be understood as a plurality of consecutive image frames that are acquired and output by an image sensor in a camera in a time sequence.

The camera may be a front camera, a rear camera, a split camera, or the like, which is not limited in this application.

In the embodiment of the application, a preview control is included on the shooting preview interface. The preview control is used for displaying at least one frame in the historical preview image frames on the shooting preview interface.

The preview control can be set as a progress bar control comprising a progress bar and a progress node, wherein the progress node can move on the progress bar and is used for controlling the shooting preview interface to display a historical preview image frame corresponding to the moved position of the progress node; the preview control can also be set as a key control, the key control can receive long-press input of a user and is used for controlling the shooting preview interface to display historical preview image frames corresponding to the press duration of the long-press input; the preview control may further be provided with a rotatable knob control, which is used to control the shooting preview interface to display the historical preview image frame corresponding to the rotation angle of the knob control.

In one implementation manner, after a user opens a camera application program in terminal equipment, the terminal equipment displays the shooting preview interface, and automatically displays the preview control on the shooting preview interface. And the user can directly operate the preview control on the shooting preview interface.

In another implementation manner, after a user opens a camera application program in terminal equipment, the terminal equipment displays the shooting preview interface, and receives a control calling input of the user, wherein the control calling input is used for calling the preview control on the shooting preview interface. And responding to the control calling input, and displaying the preview control on the shooting preview interface.

The control calling input may be touch input of a user at any position or a specific position of the shooting preview interface, the touch input may include sliding operation, clicking operation, tapping operation, long-time pressing operation, and the like, the control calling input may further include voice input, floating touch input, and the like, and may be specifically set according to actual requirements, which is not specifically limited in the embodiment of the present application.

For example, after a user opens a camera application in a terminal device, the terminal device displays a shooting preview interface, a preview image frame acquired by a camera in real time is displayed on the shooting preview interface, and a photo album entry, a shooting key, and a front-and-back camera switching key are sequentially included below the shooting preview interface from left to right, as shown in fig. 7a, at this time, a tap operation of the user at any position of the shooting preview interface is received. In response to the tap operation, a preview control 10 is displayed on the photographing preview interface, as shown in fig. 7 b.

After the preview control is displayed on the shooting preview interface, a first input of the preview control by a user can be received.

In one implementation manner, the camera collects preview image frames when the terminal device displays the shooting preview interface. Specifically, the camera may collect preview image frames when the shooting preview interface displays preview image frames collected by the camera in real time, or when the shooting preview interface displays the history preview image frames.

In one implementation, at least one frame of preview image frame collected by a camera is cached in real time under the condition of receiving a first input of a user to a preview control on a shooting preview interface. And forming the historical preview image frame by caching at least one frame of preview image frame acquired by a camera in real time. For example, in the case that the history preview image frame is displayed on the shooting preview interface, at least one preview image frame collected by the camera is cached in real time, so that the user does not miss the preview image frame collected by the camera in the process of viewing the history preview image frame.

In another implementation manner, the buffering of the preview image frames captured by the camera may also be stopped under the condition that the first input of the user to the preview control on the shooting preview interface is received based on the actual requirement of the user. For example, when the history preview image frame is displayed on the shooting preview interface, the buffering of the preview image frame acquired by the camera is stopped, so that the preview image frame acquired by the camera can be selectively buffered, and the buffering space of the terminal device is saved.

Step 120: in response to the first input, displaying a target historical preview image frame. The target history preview image frame comprises at least one frame of history preview image frame which is cached after shooting preview is started.

In one implementation, the target history preview image frame may be all history preview image frames buffered after the start of the shooting preview, or may be all history preview image frames within a preset time period, for example, all history preview image frames buffered within one minute before the input time of the first input.

In this case, the first input may be understood as a trigger input for triggering display of the target history preview image frame. For example, the preview control is a button control, the first input is a click operation on the button control, and all the history preview image frames cached after the shooting preview is started are displayed in response to the click operation of the user on the button control.

In another implementation, the target historical preview image frame is determined based on the first input.

For example, if the preview control is a progress bar control, a click operation of a user at the initial quarter of the progress bar control is received. And according to the position of the clicking operation, determining that the target progress is one fourth of the historical preview image frame. And determining a target history preview image frame according to the target progress, and displaying the target history preview image frame.

For another example, if the preview control is a key control, receiving a long-press input of a user on the key control, and determining the target progress according to the press duration of the long-press input. The longer the key press time, the closer the target progress is to the starting progress. And determining a target history preview image frame according to the target progress, and displaying the target history preview image frame. For example, the pressing time is 1 second, the target history preview image frame is determined to be the history preview image frame 10 seconds before, the pressing time is 2 seconds, and the target history preview image frame is determined to be the history preview image frame 30 seconds before.

Therefore, according to the shooting preview method provided by the embodiment of the application, the first input of a user to the preview control on the shooting preview interface is received; displaying a target historical preview image frame in response to the first input; the target history preview image frame comprises at least one frame of history preview image frame which is cached after shooting and previewing are started, so that a user can call the cached history preview image frame for viewing on the shooting and previewing interface, more shooting selection spaces exist, shooting contents are determined based on the history preview image frame, and the situation that the user misses a key picture because a shooting key is not clicked in time is effectively avoided, and therefore the problem that the key picture is difficult to capture in the shooting process and the shooting picture is not ideal is solved.

As shown in fig. 2, another embodiment of the present application provides a shooting preview method, which may be performed by a shooting preview device, which may be a terminal apparatus, a component in a terminal apparatus, an integrated circuit, or a chip. The embodiment of the present application describes a shooting preview method provided in the embodiment of the present application by taking an example in which a terminal device executes the shooting preview method, where the method includes the following steps:

step 210: a first input of a user to a preview control on a capture preview interface is received.

Step 210 may adopt the description of step 110 in the embodiment of fig. 1, and is not described herein again.

In the embodiment of the present application, in response to the first input, displaying a target history preview image frame, where the target history preview image frame is determined according to the first input, and in response to the first input, displaying a target history preview image frame may include steps 221 and 223:

step 221: based on the first input, a first position on the preview control is determined.

For example, if the preview control is a progress bar control, a click operation of a user at the initial quarter of the progress bar control is received. Then the first position is the beginning quarter of the progress bar control.

In one implementation, the preview control includes a preview progress control identifier. The preview progress control mark is used for indicating the corresponding position of the history preview image frame displayed on the shooting preview interface on the progress bar control piece. The receiving a first input of a user to a preview control on a shooting preview interface includes: and receiving a first input of the preview progress control identification from a user. The first input is used for controlling the preview progress control mark to move on the preview control, and the first position is determined based on the display position of the preview progress control mark on the preview control after the movement.

For example, in a case that the preview progress control mark is located at the first three quarters of the progress bar control, a click operation of a user at the first one quarter of the progress bar control is received, and the preview progress control mark is controlled to move from the first three quarters of the progress bar control to the first one quarter of the progress bar control. For another example, when the preview progress control mark is located at the initial three-quarter of the progress bar control, a dragging operation that a user drags the preview progress control mark to the initial one-quarter of the progress bar control is received, the preview progress control mark is controlled to move from the initial three-quarter of the progress bar control to the initial one-quarter of the progress bar control, and the first position is determined to be the initial one-quarter of the progress bar control based on the display position of the preview progress control mark on the preview control after the movement.

It should be noted that the identifier in this application may be a text, a symbol, an image, and the like for indicating information, and a control or another container may be used as a carrier of the indicating information, including but not limited to a text identifier, a symbol identifier, an image identifier, and the like, which is not limited in this application.

Therefore, the historical preview image frames displayed on the shooting preview interface are associated with the preview progress control mark, so that a user can position any one of the historical preview image frames displayed on the shooting preview interface by controlling the position of the preview progress control mark on the preview control.

Step 222: and acquiring a first historical preview image frame corresponding to the first position.

For example, based on the first input, a first position on the preview control is determined to be the beginning quarter of the progress bar control. And acquiring a first history preview image frame corresponding to the starting quarter of the progress bar control.

Step 223: displaying the first historical preview image frame.

It is to be appreciated that responsive to the first input, displaying a target history preview image frame, the target history preview image frame comprising the first history preview image frame. The target historical preview image frame is determined based on the first location.

For example, referring to fig. 7b, the shooting preview interface displays preview image frames acquired by the camera in real time. The preview control 10 is a progress bar control, and the progress bar control includes a preview progress control mark 11 thereon. The progress bar control includes two scale markings: a start history preview image frame identification 00:00 and an end history preview image frame identification 02: 08. It will be appreciated that the terminal device has cached the historical preview image frames for a time span of 02: 08. At this time, receiving a dragging operation of the user on the preview progress control mark 11, wherein the dragging operation enables the preview progress control mark 11 to move to a position 01:03 on the progress bar control. And acquiring a first history preview image frame corresponding to the position of 01:03 on the progress bar control, and displaying the first history preview image frame, as shown in fig. 7 c.

Therefore, according to the shooting preview method provided by the embodiment of the application, the first position on the preview control is determined based on the first input; acquiring a first historical preview image frame corresponding to the first position; displaying the first historical preview image frame; the target history preview image frame comprises the first history preview image frame, so that a user can position any one of the history preview image frames displayed on the shooting preview interface through first input, and selectively call out the target history preview image frame to be reviewed from the history preview image frames for viewing, thereby effectively meeting the actual requirement of the user for viewing the target history preview image frame.

As shown in fig. 3, another embodiment of the present application provides a photographing preview method, which may be performed by a photographing preview device, which may be a terminal apparatus, a component in a terminal apparatus, an integrated circuit, or a chip. The embodiment of the present application describes a shooting preview method provided in the embodiment of the present application by taking an example in which a terminal device executes the shooting preview method, where the method includes the following steps:

step 310: a first input of a user to a preview control on a capture preview interface is received.

Step 321: based on the first input, a first position on the preview control is determined.

Step 322: and acquiring a first historical preview image frame corresponding to the first position.

Step 323: displaying the first historical preview image frame.

The steps 310-323 can adopt the description of the step 210-223 in the embodiment of fig. 2, and will not be described herein again.

In the embodiment of the present application, after step 323, the method further includes:

step 324: and displaying at least one frame of historical preview image frame after the first historical preview image frame in image acquisition time frame by frame according to a preset display frame rate.

It is to be appreciated that in an embodiment of the present application, in response to the first input, a target history preview image frame is displayed, the target history preview image frame not only being the first history preview image frame, but also including at least one history preview image frame that follows the first history preview image frame at the image acquisition time.

For example, after a first history preview image frame corresponding to the time point 01:03 on the progress bar control is acquired and displayed, the history preview image frame with the image acquisition time between the scale mark 01:03 and the history preview image frame ending mark 02:08 is displayed frame by frame according to a preset display frame rate.

The preset display frame rate is a display rate for displaying the at least one frame of historical preview image frame by frame. The preset display frame rate may be the same as a display rate for displaying preview image frames acquired in real time; the display speed of the preview image frames acquired in real time can be smaller than the display speed of the preview image frames acquired in real time, so that the user can view the historical preview image frames at a slower display speed, and the user can view and capture details in the historical preview image frames; of course, the preset display frame rate may also be greater than the display rate for displaying the preview image frames acquired in real time, so that the user can quickly browse the historical preview image frames, and time is saved.

In an implementation manner, a display frame rate adjustment input for adjusting the preset display frame rate by a user may be further received, and the preset display frame rate is adjusted according to a display frame rate selected by the user or a display frame rate input by the user. The user may default the preset display frame rate to be the same as the display rate at which the preview image frames acquired in real time are displayed. When a user needs to perform quick browsing, a larger preset display frame rate can be set; when the user needs to perform detail screening, a smaller preset display frame rate can be set. Thereby, the actual demand of the user for the display rate of the at least one frame of historical preview image frames is met.

Therefore, according to the shooting preview method provided by the embodiment of the application, at least one historical preview image frame of which the image acquisition time is behind the first historical preview image frame is displayed frame by frame according to the preset display frame rate; the target historical preview image frame comprises at least one historical preview image frame which is behind the first historical preview image frame in image acquisition time, the at least one historical preview image frame which is behind the first historical preview image frame in image acquisition time can be automatically displayed, and a user can conveniently determine shooting content from the at least one historical preview image frame which is behind the first historical preview image frame in image acquisition time.

As shown in fig. 4, another embodiment of the present application provides a photographing preview method, which may be performed by a photographing preview device, which may be a terminal apparatus, a component in a terminal apparatus, an integrated circuit, or a chip. The embodiment of the present application describes a shooting preview method provided in the embodiment of the present application by taking an example in which a terminal device executes the shooting preview method, where the method includes the following steps:

step 410: a first input of a user to a preview control on a capture preview interface is received.

Step 420: in response to the first input, displaying a target historical preview image frame. The target history preview image frame comprises at least one frame of history preview image frame which is cached after shooting preview is started.

The steps 410-420 can be described as the steps 110-120 in the embodiment of fig. 1, the steps 210-223 in the embodiment of fig. 2, or the steps 310-324 in the embodiment of fig. 3, and will not be described herein again.

Step 430: and outputting a target image and/or a target video based on the at least one frame of historical preview image frame.

Wherein outputting a target image based on the at least one frame of historical preview image frame comprises:

step 431: and receiving a second input of the user, wherein at the input time of the second input, a second history preview image frame is displayed on the shooting preview interface.

The second input is used for outputting a target image, and can be understood as being used for triggering the terminal equipment to take a picture. The second input is, for example, a click operation on a shooting button in a shooting mode, and is, for example, a click operation on a volume button, and the second input may further include a voice input, a floating touch input, and the like, which is not limited in this embodiment of the application.

Step 432: in response to the second input, outputting a first target image based on the second historical preview image frame.

For example, with reference to fig. 7c, a click operation of a user on a shooting key is received, at an input time of the click operation, the shooting preview interface displays a history preview image frame (a football is stepped on by a player foot) corresponding to a time 01:03, and in response to the click operation on the shooting key, a first target image is output based on the history preview image frame corresponding to the time 01:03, where the first target image is an image of the football stepped on by the player foot.

It should be noted that the history preview image frame displayed on the shooting preview interface may be an original image acquired by a camera, or may be an image obtained by processing the original image acquired by the camera. That is to say, the second history preview image frame may be an original image captured by a camera, or may be an image obtained by processing the original image captured by the camera.

The image frame is previewed based on the second history, and a first target image is output, wherein the first target image may be an original image acquired based on a camera to output the first target image so as to keep the clear image quality of the original image, or the first target image may be output based on an image obtained by processing the original image acquired by the camera, which is beneficial to saving storage space, and the embodiment of the application does not specifically limit the image frame.

For example, the history preview image frame displayed on the shooting preview interface is an image obtained by processing an original image acquired by a camera, that is, when the second history preview image frame is an image obtained by processing an original image acquired by a camera, the first target image is output based on the second history preview image frame, the first target image may be output based on the second history preview image frame (processed image), or the first target image may be output based on an original image cached in a background of a terminal device corresponding to the second history preview image frame.

Therefore, the user can realize image shooting based on the historical preview image frame, and the situation that the user easily misses a key picture when shooting based on the preview image frame acquired in real time is effectively avoided.

Outputting a target video based on the at least one frame of historical preview image frames, comprising:

step 433: and receiving a third input of the user, wherein at the input time of the third input, a third history preview image frame is displayed on the shooting preview interface.

The third input is used to determine a start frame or an end frame of the target video. The third input may be, for example, a click operation on a shooting button in a video recording mode, or a click operation on a volume button, and the third input may further include a voice input, a floating touch input, and the like, which is not limited in this embodiment of the application.

Step 434: in response to the third input, determining the third history preview image frame as the first video frame.

It should be understood that the first video frame may be a start frame or an end frame, and the two cases will be described by two examples, which will not be described first.

Step 435: receiving a fourth input of the user, wherein at an input time of the fourth input, a fourth history preview image frame is displayed on the shooting preview interface.

The fourth input is similar to the third input and is not described in detail herein.

Step 436: determining the fourth historical preview image frame as a second video frame in response to the fourth input, wherein at least one historical preview image frame is included between the third historical preview image and the fourth historical preview image frame.

Thus, the user can determine the starting frame, the ending frame and the at least one historical preview image frame of the target video through the third input and the fourth input.

Step 437: outputting a target video based on the first video frame, the at least one frame of historical preview image frame, and the second video frame.

In one implementation, the target video is output based on the image capture time sequence of the first video frame, the at least one historical preview image frame, and the second video frame.

For example, the historical preview image frame corresponding to the 01:03 moment is determined as a first video frame through the third input, the historical preview image frame corresponding to the 01:50 moment is determined as a second video frame through the fourth input, and at least one frame of the historical preview image frame with the duration span of 00:47 is included between the first video frame and the second video frame. And based on the image acquisition time, taking the first video frame as a starting frame of the target video, taking the second video frame as an ending frame of the target video, and outputting the target video with the time span of 00: 47.

For another example, the historical preview image frame corresponding to the 01:50 moment is determined as a first video frame through the third input, the historical preview image frame corresponding to the 01:03 moment is determined as a second video frame through the fourth input, the second video frame is used as a starting frame of the target video based on the image acquisition time, the first video frame is used as an ending frame of the target video, and the target video with the video duration of 00:47 is output.

Therefore, the user can realize video shooting based on the historical preview image frame, and the situation that the user easily misses a key picture when shooting based on the preview image frame acquired in real time is effectively avoided.

In an implementation manner, the preview image frame displayed by the shooting preview interface may be an original image acquired by a camera, or may be a preview image with a lower resolution. The target video is output based on the first video frame, the at least one historical preview image frame, and the second video frame, and may be the target video output based on the preview image with a lower resolution, which is beneficial to saving a storage space, or the target video is output based on the original image to keep a clear image quality of the original image, which is not limited in the embodiment of the present application.

It should be noted that the history preview image frame displayed on the shooting preview interface may be an original image acquired by a camera, or may be an image obtained by processing the original image acquired by the camera.

The target video is output based on the first video frame, the at least one historical preview image frame and the second video frame, and may be an original image acquired by a camera, and the target video is output to keep the clear image quality of the original image, or may be an image output target video processed based on the original image acquired by the camera, which is beneficial to saving storage space, and the embodiment of the present application does not specifically limit the storage space.

Therefore, according to the shooting preview method provided by the embodiment of the application, a second input of a user is received, wherein at the input time of the second input, a second history preview image frame is displayed on the shooting preview interface; outputting a first target image based on the second historical preview image frame in response to the second input; and/or receiving a third input of the user, wherein at the input time of the third input, a third history preview image frame is displayed on the shooting preview interface; determining the third history preview image frame as a first video frame in response to the third input; receiving a fourth input of the user, wherein at the input time of the fourth input, a fourth history preview image frame is displayed on the shooting preview interface; determining the fourth history preview image frame as a second video frame in response to the fourth input, wherein at least one history preview image frame is included between the third history preview image and the fourth history preview image frame; and outputting the target video based on the first video frame, the at least one historical preview image frame and the second video frame, so that a user can shoot the target image and the target video based on the historical preview image frame, and the condition that the user easily misses a key picture when shooting based on the preview image frame acquired in real time is effectively avoided.

As shown in fig. 5, another embodiment of the present application provides a photographing preview method, which may be performed by a photographing preview device, which may be a terminal apparatus, a component in a terminal apparatus, an integrated circuit, or a chip. The embodiment of the present application describes a shooting preview method provided in the embodiment of the present application by taking an example in which a terminal device executes the shooting preview method, where the method includes the following steps:

step 510: a first input of a user to a preview control on a capture preview interface is received.

Step 520: in response to the first input, displaying a target historical preview image frame.

The steps 510-520 may adopt the description of the step 110-120 in the embodiment of fig. 1, the description of the step 210-223 in the embodiment of fig. 2, or the description of the step 310-324 in the embodiment of fig. 3, and the description of the step 430 in the embodiment of fig. 4 may also be adopted after the step 520, which is not described herein again.

In an embodiment of the present application, the preview control includes at least one key image frame identifier, where the key image frame identifier is used to indicate a key image frame. The key image frames may be understood as image frames having a special meaning or containing key information. Therefore, the user can quickly locate the key image frames with special meanings or containing key information in the history preview image frames according to the key image frame identification so as to view the key image frames or the history preview image frames before and after the key image frames.

In one implementation, in a case that the preview control includes the at least one key image frame identification, a first input of a user to a preview control on a shooting preview interface is received, where the first input may include a first sub-input and a second sub-input. The receiving a first input of a user to a preview control on the shooting preview interface may include:

and receiving a first sub-input identified by a user to a first key image frame on the preview control.

The first key image frame identification refers to one key image frame identification in at least one key image frame identification. The first sub-input may be a click operation, a tap operation, a long-press operation, and the like on the first key image frame identifier, and the first sub-input may also be a voice input, a floating touch input, and the like on the first key image frame identifier, which is not specifically limited in this embodiment of the application. As shown in fig. 7d, the preview control includes a key image frame mark 12, i.e. an oval mark at time 02:08 in the figure. And receiving the clicking operation of the user on the oval mark.

In response to the first sub-input, displaying a thumbnail of the key image frame associated with the first key image frame identification, as shown in fig. 7e, popping up a thumbnail window above the oval identification at time 02:08 in the figure, the thumbnail window displaying a thumbnail 13 of the key image frame associated with the oval identification at time 02: 08.

And receiving a second sub-input of the thumbnail from the user. The second sub-input may be a click operation, a tap operation, a long-press operation, and the like on the thumbnail, which is not specifically limited in the embodiment of the present application.

In a case where the first input includes the first sub-input and the second sub-input, the displaying a target history preview image frame in response to the first input may include:

displaying a target historical preview image frame in response to the second sub-input. The target historical preview image frame includes a key image frame associated with the key image frame identification.

As shown in fig. 7e, a user's click operation on the display area of the thumbnail image 13 is received, and in response to the click operation, a key image frame associated with the key image frame identifier is displayed, that is, a history preview image frame displayed at time 02:08 in the shooting preview interface in fig. 7b is displayed.

Prior to said step 510, the method further comprises:

step 501: and marking the key image frame in the process of acquiring the preview image frame by the camera.

It will be appreciated that after the keyframe frame is marked, a keyframe frame identification on the preview control indicates the keyframe frame. Therefore, a user can quickly position the key image frames marked in the process of acquiring the preview image frames by the camera according to the key image frame identification on the preview control so as to view the key image frames or historical preview image frames before and after the key image frames.

In one implementation mode, in the process of acquiring a preview image frame by a camera, the preview image frame displayed on the shooting preview interface is marked as a key image frame at preset time intervals. For example, after a user opens a camera application in the terminal device, the camera application is run on the foreground of the terminal device, and a camera of the terminal device collects preview image frames and displays the shooting preview interface. In the process of acquiring preview image frames by a camera, marking the preview image frames displayed on the shooting preview interface as key image frames at intervals of 1 minute, thereby marking the image frames with special time node meanings.

In one implementation, in the process of acquiring the preview image frame by the camera, the preview image frame with the image parameter meeting the preset condition is marked as a key image frame. The image parameter is, for example, a parameter such as an image brightness, an image focal length, or an image size. The preset condition is, for example, a temporal change in an image parameter.

For example, during the process of acquiring the preview image frame by the camera, the preview image frame with the instantaneous image brightness change is marked as a key image frame. For another example, in the process of capturing the preview image frame by the camera, the preview image frame with the image size changing instantaneously is marked as a key image frame. Thereby, image frames where a special event occurs are marked.

In one implementation, in the process of acquiring a preview image frame by a camera, in the case of receiving a fifth input from a user, in response to the fifth input, a preview image frame displayed on the shooting preview interface at an input time of the fifth input is marked as a key image frame. The fifth input is for tagging a key image frame.

For example, as shown in fig. 7f, in the process of acquiring the preview image frame by the camera, the user performs a pull-down operation on the shooting preview interface, a reminding window pops up above the shooting preview interface to remind the user to release the hand, so that the current image frame can be marked as the key image frame, and when the user releases the hand at time 03:12, the terminal device determines the preview image frame corresponding to time 03:12 as the key image frame in response to the pull-down operation. After the preview image frame corresponding to the time point 03:12 is determined to be the key image frame, displaying a corresponding key image frame identifier 14 on the preview control, as shown in fig. 7g, where the key image frame identifier 14 is used to indicate the key image frame, that is, the preview image frame indicating the top football of the athlete corresponding to the time point 03: 12. Therefore, the image frames with special meanings or containing key information are marked by the user independently, and then the key image frames marked in the process of acquiring the preview image frames by the camera can be quickly positioned according to the key image frame marks on the preview control so as to view the key image frames or historical preview image frames before and after the key image frames.

In one implementation, the keyframe frame identifications associated with differently labeled keyframe frames may be labeled with different colors. For example, the key image frames marked at intervals of a preset duration are marked by red key image frame marks, the key image frames marked by preview image frames with image parameters meeting preset conditions are marked by green key image frames, the key image frames marked according to the fifth input of the user are marked by blue key image frame marks, and the like. Thus, the user can distinguish the special meaning of the at least one key image frame identification by the key image frame identifications having different colors.

In one implementation, the key image frame identification on the preview control may be deleted in response to an input canceling the key image frame identification. For example, receiving a long-press operation of a user on the key image frame identification, and deleting the key image frame identification.

Therefore, according to the shooting preview method provided by the embodiment of the application, the key image frames are marked in the process of acquiring the preview image frames by the camera, the preview control comprises at least one key image frame identification, the key image frame identification is used for indicating the key image frames, the key image frames can be actively or passively determined in the process of acquiring the preview image frames by the camera, and the key image frames are marked on the preview control through the key image frame identification, so that a user can quickly position the key image frames in the historical preview image frames according to the key image frame identification to view the key image frames or the historical preview image frames before and after the key image frames, and the key image frames are not required to be found by viewing the historical preview image frames frame by frame.

As shown in fig. 6, another embodiment of the present application provides a photographing preview method, which may be performed by a photographing preview device, which may be a terminal apparatus, a component in a terminal apparatus, an integrated circuit, or a chip. The embodiment of the present application describes a shooting preview method provided in the embodiment of the present application by taking an example in which a terminal device executes the shooting preview method, where the method includes the following steps:

step 601: a first input of a user to a preview control on a capture preview interface is received.

Step 602: in response to the first input, displaying a target historical preview image frame.

The step 601-602 can adopt the description of the step 110-120 in the embodiment of fig. 1, the description of the step 210-223 in the embodiment of fig. 2, or the description of the step 310-324 in the embodiment of fig. 3, the description of the step 430 in the embodiment of fig. 4 can be adopted after the step 602, and the description of the step 501 in the embodiment of fig. 5 can be adopted before the step 601, which is not described again here.

In the embodiment of the present application, the sampling rate of the preview image frames displayed in the shooting preview interface may be set by a user. And under the condition that the shooting preview interface displays the preview image frames acquired in real time, the sampling rate refers to the proportion of the displayed preview image frames to the preview image frames acquired in real time, and under the condition that the shooting preview interface displays the history preview image frames, the sampling rate refers to the proportion of the displayed history preview image frames to the cached history preview image frames.

Step 610: a sixth input by the user is received.

The sixth input is used to switch the sampling rate of the preview image frame displayed in the shooting preview interface. Before receiving a sixth input of the user, a sampling rate of a preview image frame displayed in the shooting preview interface is a first sampling rate.

The sixth input may be a touch operation of a user at any position or a specific position of the shooting preview interface, where the touch operation may include a sliding operation, a clicking operation, a tapping operation, a long-time pressing operation, and the like, and may be specifically set according to an actual requirement, which is not specifically limited in this embodiment of the application.

Step 610 may be prior to receiving a first input by a user to a preview control on the capture preview interface or may be subsequent to displaying the target history preview image frame in response to the first input.

Step 620: and responding to the sixth input, updating the sampling rate of the preview image frames displayed in the shooting preview interface to a second sampling rate, and displaying a fifth historical preview image frame, wherein the second sampling rate is smaller than the first sampling rate.

It is to be understood that the fifth history preview image frame is one of the history preview image frames filtered based on the second sampling rate, and in an implementation, the fifth history preview image frame may be a history preview image frame displayed by the shooting preview interface at the input time of the sixth input.

As illustrated in fig. 7h, the shooting preview interface displays the history preview image frame corresponding to time 02:08, and the user performs a sliding operation of shrinking from outside to inside on the shooting preview interface. In response to the sliding operation, the terminal device updates the sampling rate of the history preview image frame displayed in the shooting preview interface to 1/15, and displays the history preview image frame corresponding to time 02:08 on the shooting preview interface, as shown in fig. 7 i.

Thus, the photographing preview interface may display only the history preview image frames filtered based on the second sampling rate without displaying each frame of the history preview image frames cached, thereby facilitating a user to determine photographing contents from the filtered history preview image frames.

Step 630: and receiving a seventh input of the user on the shooting preview interface.

And the seventh input is used for switching the history preview image frame displayed by the shooting preview interface.

Step 640: switching the fifth history preview image frame to a sixth history preview image frame in response to the seventh input.

The fifth historical preview image frame and the sixth historical preview image frame are both filtered historical preview image frames based on the second sampling rate.

In one implementation, the seventh input may be a user's slide left or right operation on the capture preview interface. For example, a sliding operation from right to left on the shooting preview interface by a user is received, and in response to the sliding operation, a sixth history preview image frame after the fifth history preview image frame in the image acquisition time filtered based on the second sampling rate is switched and displayed.

Therefore, the user can autonomously control and switch the historical preview image frame displayed on the shooting preview interface through the seventh input on the shooting preview interface, and the problem that the user cannot see the details of the image due to too high display speed of the continuous multiple frames of the historical preview image frame on the shooting preview interface is avoided.

Step 650: receiving an eighth input by a user to the sixth historical preview image frame.

The eighth input is for outputting a target image.

Step 660: outputting, in response to the eighth input, a second target image based on the sixth historical preview image frame.

In one implementation, the eighth input may be a user swipe on the sixth history preview image frame. For example, a user's slide-up operation on a history preview image frame currently displayed on the photographing preview interface is received, and in response to the slide-up operation, a target image is output based on the history preview image frame currently displayed on the photographing preview interface.

In one implementation, in response to the sixth input, the sample rate of preview image frames displayed in the capture preview interface is updated to a default second sample rate, such as 1/15. The second sampling rate may also be set by a user.

A ninth input by the user is received. The ninth input is for setting the second sampling rate. In response to the ninth input, determining a sampling rate input by the ninth input as a second sampling rate.

As illustrated in connection with fig. 7i, the upper right corner of the capture preview interface displays a default second sampling rate 1/15. At which point the user clicks on the display area for the sample rate. In response to the user's operation of clicking on the sampling rate, a sampling rate setting window pops up as shown in fig. 7 j. The user may select 1/30 a sample rate through the sample rate setting window, or customize the sample rate. In actual use, a smaller sampling rate may be set when the user needs to filter out a large number of similar preview image frames. When the user needs to select a better picture in the similar pictures through comparison, a larger sampling rate can be set.

In one implementation, after the sampling rate of the preview image frames displayed in the shooting preview interface is updated to the second sampling rate, a return operation of a user may be further received, where the return operation may be a double-click operation or a sliding operation that enlarges from inside to outside, and in response to the return operation, the sampling rate of the preview image frames displayed in the shooting preview interface is switched back to the first sampling rate.

Therefore, according to the shooting preview method provided by the embodiment of the application, the sixth input of the user is received; updating a sampling rate of a preview image frame displayed in the shooting preview interface to a second sampling rate in response to the sixth input, and displaying a fifth historical preview image frame, wherein the second sampling rate is less than the first sampling rate; receiving a seventh input of a user on the shooting preview interface; switching the fifth history preview image frame to a sixth history preview image frame in response to the seventh input; receiving an eighth input by a user to the sixth historical preview image frame; responding to the eighth input, outputting a second target image based on the sixth historical preview image frame, and switching the sampling rate of the preview image frame displayed in the shooting preview interface according to the user requirement, so that the user can view the historical preview image frames filtered based on different sampling rates, the actual requirement of the user for viewing the historical preview image frames is met, and the user can conveniently determine the shooting content from the filtered historical preview image frames.

In the shooting preview method provided by the embodiment of the present application, the execution subject may be a shooting preview device, or a control module in the shooting preview device for executing the shooting preview method. In the embodiment of the present application, a shooting preview method executed by a shooting preview device is taken as an example, and the shooting preview device provided in the embodiment of the present application is described.

Fig. 8 is a schematic structural diagram of a photographing preview device according to an embodiment of the present invention. As shown in fig. 8, the photographing apparatus 800 includes: a receiving module 810 and a display module 820.

The receiving module 810 is configured to receive a first input of a user to a preview control on a shooting preview interface; a display module 820 for displaying a target history preview image frame in response to the first input; the target history preview image frame comprises at least one frame of history preview image frame which is cached after shooting preview is started.

In one implementation, the apparatus further comprises: a processing module to determine a target historical preview image frame based on the first input.

In one implementation, the processing module is further configured to: determining a first position on the preview control based on the first input; acquiring a first historical preview image frame corresponding to the first position; the display module is further configured to display the first historical preview image frame; wherein the target historical preview image frame comprises the first historical preview image frame.

In one implementation, the display module is further configured to: displaying at least one historical preview image frame with image acquisition time behind the first historical preview image frame by frame according to a preset display frame rate; wherein the target historical preview image frame comprises at least one historical preview image frame that follows the first historical preview image frame at the image acquisition time.

In one implementation, the receiving module is further configured to: receiving a second input of the user, wherein at the input time of the second input, a second history preview image frame is displayed on the shooting preview interface; the apparatus also includes a processing module to output a first target image based on the second historical preview image frame in response to the second input.

In one implementation, the receiving module is further configured to: receiving a third input of the user, wherein a third history preview image frame is displayed on the shooting preview interface at the input time of the third input; the apparatus further includes a processing module to determine the third history preview image frame as the first video frame in response to the third input; the receiving module is further configured to receive a fourth input of the user, where at an input time of the fourth input, a fourth history preview image frame is displayed on the shooting preview interface; the processing module is further configured to determine, in response to the fourth input, the fourth history preview image frame as a second video frame, wherein at least one history preview image frame is included between the third history preview image and the fourth history preview image frame; outputting a target video based on the first video frame, the at least one frame of historical preview image frame, and the second video frame.

In one implementation, the preview control includes a preview progress control identifier; the receiving module is further used for receiving a first input of the preview progress control identifier by a user; wherein the first input is used for controlling the preview progress control mark to move on the preview control; the target historical preview image frame is determined based on a display position of the preview progress control indicia on the preview control after the movement.

In one implementation, the preview control includes at least one key image frame identification indicating a key image frame; the device further comprises: and the marking module is used for marking the key image frame in the process of acquiring the preview image frame by the camera.

In one implementation, the marking module is further configured to perform at least one of: marking preview image frames displayed on the shooting preview interface as key image frames at intervals of preset time length; marking the preview image frame with the image parameters meeting the preset conditions as a key image frame; in a case where a fifth input by a user is received, in response to the fifth input, a preview image frame displayed on the photographing preview interface at an input time of the fifth input is marked as a key image frame.

In one implementation, the receiving module is further configured to: receiving a first sub-input of a first key image frame identification on the preview control by a user; the display module is further used for responding to a first sub-input, and displaying a thumbnail of a key image frame associated with the first key image frame identification; the receiving module is further used for receiving a second sub-input of the thumbnail from the user; the display module is further configured to display a target historical preview image frame in response to the second sub-input.

In one implementation, a sampling rate of a preview image frame displayed in the shooting preview interface is a first sampling rate; the receiving module is further used for receiving a sixth input of the user; the display module is further configured to update a sampling rate of a preview image frame displayed in the shooting preview interface to a second sampling rate in response to the sixth input, and display a fifth historical preview image frame, where the second sampling rate is smaller than the first sampling rate; the receiving module is further used for receiving a seventh input of the user on the shooting preview interface; the display module is further to switch the fifth history preview image frame to a sixth history preview image frame in response to the seventh input; the receiving module is further configured to receive an eighth input of the sixth history preview image frame from the user; the device further comprises a processing module; the processing module is further to output a second target image based on the sixth historical preview image frame in response to the eighth input.

In one implementation, the receiving module is further configured to: receiving a ninth input of the user; the display module is further configured to determine a sampling rate input by the ninth input as a second sampling rate in response to the ninth input.

In one implementation, the apparatus further comprises: the cache module is used for caching at least one frame of preview image frame collected by the camera in real time; or stopping caching the preview image frames collected by the camera.

Therefore, the shooting preview device provided by the embodiment of the application receives a first input of a user to a preview control on a shooting preview interface; displaying a target historical preview image frame in response to the first input; the target history preview image frame comprises at least one frame of history preview image frame which is cached after shooting and previewing are started, so that a user can call the cached history preview image frame for viewing on the shooting and previewing interface, more shooting selection spaces exist, shooting contents are determined based on the history preview image frame, and the situation that the user misses a key picture because a shooting key is not clicked in time is effectively avoided, and therefore the problem that the key picture is difficult to capture in the shooting process and the shooting picture is not ideal is solved.

The shooting preview device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiments of the present application are not particularly limited.

The shooting preview device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.

The shooting preview device provided in the embodiment of the present application can implement each process implemented by the method embodiments of fig. 1 to fig. 6, and is not described here again to avoid repetition.

Optionally, as shown in fig. 9, an electronic device 900 is further provided in this embodiment of the present application, and includes a processor 901, a memory 902, and a program or an instruction stored in the memory 902 and executable on the processor 901, where the program or the instruction is executed by the processor 901 to implement each process of the shooting preview method in the embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

It should be noted that the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.

Fig. 10 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.

The electronic device 1000 includes, but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010.

Those skilled in the art will appreciate that the electronic device 1000 may further comprise a power source (e.g., a battery) for supplying power to various components, and the power source may be logically connected to the processor 1010 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. The electronic device structure shown in fig. 10 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is not repeated here.

The user input unit 1007 is used for receiving a first input of a user to a preview control on the shooting preview interface; a display unit 1006 for displaying a target history preview image frame in response to the first input; the target history preview image frame comprises at least one frame of history preview image frame which is cached after shooting preview is started.

In one implementation, the processor 1010 is configured to determine a target historical preview image frame based on the first input.

In one implementation, the processor 1010 is configured to determine a first position on the preview control based on the first input; acquiring a first historical preview image frame corresponding to the first position; a display unit 1006 is configured to display the first history preview image frame; wherein the target historical preview image frame comprises the first historical preview image frame.

In one implementation, the display unit 1006 is configured to display, frame by frame, at least one historical preview image frame after the first historical preview image frame in image acquisition time according to a preset display frame rate; wherein the target historical preview image frame comprises at least one historical preview image frame that follows the first historical preview image frame at the image acquisition time.

In one implementation, the user input unit 1007 is configured to receive a second input from the user, where at an input time of the second input, a second history preview image frame is displayed on the shooting preview interface; processor 1010 is configured to output a first target image based on the second historical preview image frame in response to the second input.

In one implementation, the user input unit 1007 is configured to receive a third input from the user, where at an input time of the third input, a third history preview image frame is displayed on the shooting preview interface; processor 1010 is configured to determine the third history preview image frame as the first video frame in response to the third input; the user input unit 1007 is further configured to receive a fourth input from the user, where at an input time of the fourth input, a fourth history preview image frame is displayed on the shooting preview interface; processor 1010 is further configured to determine the fourth history preview image frame as a second video frame in response to the fourth input, wherein at least one history preview image frame is included between the third history preview image and the fourth history preview image frame; outputting a target video based on the first video frame, the at least one frame of historical preview image frame, and the second video frame.

In one implementation, the preview control includes a preview progress control identifier; the user input unit 1007 is used for receiving a first input of the preview progress control identifier from a user; wherein the first input is used for controlling the preview progress control mark to move on the preview control; the target historical preview image frame is determined based on a display position of the preview progress control indicia on the preview control after the movement.

In one implementation, the preview control includes at least one key image frame identification indicating a key image frame; the processor 1010 is configured to mark the key image frames during the process of capturing the preview image frames by the camera.

In one implementation, processor 1010 is configured to perform at least one of: marking preview image frames displayed on the shooting preview interface as key image frames at intervals of preset time length; marking the preview image frame with the image parameters meeting the preset conditions as a key image frame; in a case where a fifth input by a user is received, in response to the fifth input, a preview image frame displayed on the photographing preview interface at an input time of the fifth input is marked as a key image frame.

In one implementation, the user input unit 1007 is configured to receive a first sub-input identified by a user for a first key image frame on the preview control; the display unit 1006 is configured to display a thumbnail of a key image frame associated with the first key image frame identifier in response to a first sub-input; the user input unit 1007 is further configured to receive a second sub-input of the thumbnail by the user; the display unit 1006 is further configured to display a target history preview image frame in response to the second sub-input.

In one implementation, a sampling rate of a preview image frame displayed in the shooting preview interface is a first sampling rate; the user input unit 1007 is used for receiving a sixth input from the user; the processor 1010 is configured to update a sampling rate of a preview image frame displayed in the shooting preview interface to a second sampling rate in response to the sixth input, and display a fifth historical preview image frame, where the second sampling rate is smaller than the first sampling rate; the user input unit 1007 is further configured to receive a seventh input from the user on the shooting preview interface; processor 1010 is further operative to switch the fifth history preview image frame to a sixth history preview image frame in response to the seventh input; the user input unit 1007 is further configured to receive an eighth input by the user to the sixth history preview image frame; processor 1010 is further configured to output a second target image based on the sixth historical preview image frame in response to the eighth input.

In one implementation, the user input unit 1007 is used to receive a ninth input from the user; the processor 1010 is configured to determine a sampling rate input by the ninth input as a second sampling rate in response to the ninth input.

In one implementation, the processor 1010 is configured to cache at least one preview image frame acquired by the camera in real time; or stopping caching the preview image frames collected by the camera.

It should be understood that in the embodiment of the present application, the input Unit 1004 may include a Graphics Processing Unit (GPU) 10041 and a microphone 10042, and the Graphics Processing Unit 10041 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 may include two parts, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein. The memory 1009 may be used to store software programs as well as various data, including but not limited to application programs and operating systems. Processor 1010 may integrate an application processor that handles primarily operating systems, user interfaces, applications, etc. and a modem processor that handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 1010.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above shooting preview method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement each process of the above shooting preview method embodiment, and can achieve the same technical effect, and the details are not repeated here to avoid repetition.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A shooting preview method, characterized in that the method comprises:

receiving a first input of a user to a preview control on a shooting preview interface;

displaying a target historical preview image frame in response to the first input;

the target history preview image frame comprises at least one frame of history preview image frame which is cached after shooting preview is started.

2. The method of claim 1, wherein prior to said displaying the target historical preview image frame, the method further comprises:

based on the first input, a target historical preview image frame is determined.

3. The method of claim 2, wherein determining a target historical preview image frame based on the first input comprises:

determining a first position on the preview control based on the first input;

acquiring a first historical preview image frame corresponding to the first position;

the displaying the target historical preview image frame comprises:

displaying the first historical preview image frame;

wherein the target historical preview image frame comprises the first historical preview image frame.

4. The method of claim 3, wherein after said displaying the first historical preview image frame, the method further comprises:

displaying at least one historical preview image frame with image acquisition time behind the first historical preview image frame by frame according to a preset display frame rate;

wherein the target historical preview image frame comprises at least one historical preview image frame that follows the first historical preview image frame at the image acquisition time.

5. The method of claim 1, wherein after displaying a target historical preview image frame in response to the first input, the method further comprises:

receiving a second input of the user, wherein at the input time of the second input, a second history preview image frame is displayed on the shooting preview interface;

in response to the second input, outputting a first target image based on the second historical preview image frame.

6. The method of claim 1, wherein after displaying a target historical preview image frame in response to the first input, the method further comprises:

receiving a third input of the user, wherein a third history preview image frame is displayed on the shooting preview interface at the input time of the third input;

determining the third history preview image frame as a first video frame in response to the third input;

receiving a fourth input of the user, wherein at the input time of the fourth input, a fourth history preview image frame is displayed on the shooting preview interface;

determining the fourth history preview image frame as a second video frame in response to the fourth input, wherein at least one history preview image frame is included between the third history preview image and the fourth history preview image frame;

outputting a target video based on the first video frame, the at least one frame of historical preview image frame, and the second video frame.

7. The method of claim 1, wherein the preview control includes a preview progress control identification;

the receiving a first input of a user to a preview control on a shooting preview interface includes:

receiving a first input of the preview progress control identification by a user;

wherein the first input is used for controlling the preview progress control mark to move on the preview control; the target historical preview image frame is determined based on a display position of the preview progress control indicia on the preview control after the movement.

8. The method of claim 1 or 7, wherein the preview control includes at least one key image frame identification indicating a key image frame;

before the receiving of the first input of the user to the preview control on the shooting preview interface, the method further includes:

and marking the key image frame in the process of acquiring the preview image frame by the camera.

9. The method of claim 8, wherein said tagging key image frames comprises at least one of:

marking preview image frames displayed on the shooting preview interface as key image frames at intervals of preset time length;

marking the preview image frame with the image parameters meeting the preset conditions as a key image frame;

in a case where a fifth input by a user is received, in response to the fifth input, a preview image frame displayed on the photographing preview interface at an input time of the fifth input is marked as a key image frame.

10. The method of claim 8, wherein receiving a first user input to a preview control on a capture preview interface comprises:

receiving a first sub-input of a first key image frame identification on the preview control by a user;

displaying a thumbnail of a key image frame associated with the first key image frame identification in response to a first sub-input;

receiving a second sub-input of the thumbnail from the user;

the displaying, in response to the first input, a target historical preview image frame, comprising:

displaying a target historical preview image frame in response to the second sub-input.

11. The method of claim 1, wherein a sampling rate of preview image frames displayed in the capture preview interface is a first sampling rate;

the method further comprises the following steps:

receiving a sixth input of the user;

updating a sampling rate of a preview image frame displayed in the shooting preview interface to a second sampling rate in response to the sixth input, and displaying a fifth historical preview image frame, wherein the second sampling rate is less than the first sampling rate;

receiving a seventh input of a user on the shooting preview interface;

switching the fifth history preview image frame to a sixth history preview image frame in response to the seventh input;

receiving an eighth input by a user to the sixth historical preview image frame;

outputting, in response to the eighth input, a second target image based on the sixth historical preview image frame.

12. The method of claim 11, further comprising:

receiving a ninth input of the user;

in response to the ninth input, determining a sampling rate input by the ninth input as a second sampling rate.

13. The method of claim 1, wherein upon receiving a first user input to a preview control on a capture preview interface, the method further comprises:

caching at least one frame of preview image frame collected by a camera in real time;

or stopping caching the preview image frames collected by the camera.

14. A shooting preview apparatus, characterized in that the apparatus comprises:

the receiving module is used for receiving first input of a user to a preview control on a shooting preview interface;

a display module to display a target history preview image frame in response to the first input;

15. The apparatus of claim 14, further comprising:

a processing module to determine a target historical preview image frame based on the first input.

16. The apparatus of claim 15, wherein the processing module is further configured to:

determining a first position on the preview control based on the first input;

the display module is further configured to display the first historical preview image frame;

17. The apparatus of claim 16, wherein the display module is further configured to:

18. The apparatus of claim 14, wherein the receiving module is further configured to:

the apparatus also includes a processing module to output a first target image based on the second historical preview image frame in response to the second input.

19. The apparatus of claim 14, wherein the receiving module is further configured to:

the apparatus further includes a processing module to determine the third history preview image frame as the first video frame in response to the third input;

the receiving module is further configured to receive a fourth input of the user, where at an input time of the fourth input, a fourth history preview image frame is displayed on the shooting preview interface;

the processing module is further configured to determine, in response to the fourth input, the fourth history preview image frame as a second video frame, wherein at least one history preview image frame is included between the third history preview image and the fourth history preview image frame;

20. The apparatus of claim 14, wherein the preview control includes a preview progress control identification;

the receiving module is further used for receiving a first input of the preview progress control identification by a user;

21. The apparatus of claim 14 or 20, wherein the preview control comprises at least one key image frame identification indicating a key image frame;

the device further comprises:

and the marking module is used for marking the key image frame in the process of acquiring the preview image frame by the camera.

22. The apparatus of claim 21, wherein the tagging module is further configured to perform at least one of:

23. The apparatus of claim 21, wherein the receiving module is further configured to:

the display module is further used for responding to a first sub-input, and displaying a thumbnail of a key image frame associated with the first key image frame identification;

the receiving module is further used for receiving a second sub-input of the thumbnail from the user;

the display module is further configured to display a target historical preview image frame in response to the second sub-input.

24. The apparatus of claim 14, wherein a sampling rate of preview image frames displayed in the capture preview interface is a first sampling rate;

the receiving module is further used for receiving a sixth input of the user;

the display module is further configured to update a sampling rate of a preview image frame displayed in the shooting preview interface to a second sampling rate in response to the sixth input, and display a fifth historical preview image frame, where the second sampling rate is smaller than the first sampling rate;

the receiving module is further used for receiving a seventh input of the user on the shooting preview interface;

the display module is further to switch the fifth history preview image frame to a sixth history preview image frame in response to the seventh input;

the receiving module is further configured to receive an eighth input of the sixth history preview image frame from the user;

the device further comprises a processing module;

the processing module is further to output a second target image based on the sixth historical preview image frame in response to the eighth input.

25. The apparatus of claim 24, wherein the receiving module is further configured to:

receiving a ninth input of the user;

the display module is further configured to determine a sampling rate input by the ninth input as a second sampling rate in response to the ninth input.

26. The apparatus of claim 14, further comprising:

the cache module is used for caching at least one frame of preview image frame collected by the camera in real time;

or stopping caching the preview image frames collected by the camera.

27. An electronic device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the method of any one of claims 1-13.

28. A readable storage medium, characterized in that it stores thereon a program or instructions which, when executed by a processor, implement the steps of the method according to any one of claims 1-13.