CN104980681A - Video acquisition method and video acquisition device - Google Patents
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- 238000001454 recorded image Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 description 3
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- 238000009432 framing Methods 0.000 description 1
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Abstract
The application provides a video acquisition method and a video acquisition device. The method comprises the following steps: acquiring a target object; judging whether an image frame acquired by video collection equipment includes the target object; and storing the image frame as an image frame in a video to form a video if the image frame acquired by the video collection equipment includes the target object. As only the image frame including the target object is stored to form a video, image frames not including the target object can be removed from the video compared with an existing method in which all image frames acquired by the video collection equipment are stored as the image frames of a video. Therefore, the number of image frames included in a video can be reduced, and the storage space occupied by the video can be reduced. Moreover, the storage space occupied by a video can be reduced without reducing the resolution of the video.
Description
Technical Field
The present application relates to the field of electronic information, and in particular, to a video acquisition method and apparatus.
Background
With the development of multimedia technology, the requirement of users on the definition of videos is higher and higher, and the higher the definition is, the larger the storage space occupied by the video files is. Therefore, as the number of video files to be saved increases, the demand for storage space increases for electronic devices having video capture functions.
Therefore, on the premise of ensuring the definition of the video, how to reduce the storage space occupied by the video file becomes a problem to be solved urgently at present.
Disclosure of Invention
The application provides a video acquisition method and a video acquisition device, and aims to solve the problem of how to reduce the storage space occupied by a video file on the premise of ensuring the definition of a video.
In order to achieve the above object, the present application provides the following technical solutions:
a video acquisition method, comprising:
acquiring a target object;
judging whether the image frame acquired by the video acquisition equipment comprises the target object or not;
and if the target object is included in the image frame, storing the image frame as an image frame in a video to form the video.
Optionally, the method further comprises:
discarding storage of the image frame if the target object is not included in the image frame.
Optionally, the acquiring the target object includes:
capturing an image through a preview interface of the video capture device;
receiving a selection instruction of a user on the preview interface;
and taking the object selected by the user in the image on the preview interface as a target object based on the selection instruction.
Optionally, the acquiring the target object includes:
acquiring locally stored images or videos;
receiving an instruction of a user to select an object in the image or the video;
and taking the object selected by the user as a target object based on the instruction.
Optionally, the determining whether the image frame acquired by the video capture device includes the target object, and if the image frame includes the target object, storing the image frame as an image frame in a video includes:
after a video is recorded by a video acquisition device, judging whether each image frame of the video recorded by the video acquisition device comprises the target object or not, and storing the image frame comprising the target object as an image frame in the video;
or, in the process of recording a video by a video acquisition device, judging whether the image frame currently recorded by the video acquisition device comprises the target object, and if the image frame currently recorded comprises the target object, storing the image frame as the image frame of the video;
or before the video acquisition equipment records the video, judging whether the image frames captured in the preview interface of the video acquisition equipment comprise the target object or not, and if the captured image frames comprise the target object, recording and storing the image frames.
A video acquisition apparatus comprising:
the acquisition module is used for acquiring a target object;
the judging module is used for judging whether the image frame acquired by the video acquisition equipment comprises the target object or not;
and the storage control module is used for storing the image frames as the image frames in the video to form the video if the target object is included in the image frames.
Optionally, the storage control module is further configured to:
discarding storage of the image frame if the target object is not included in the image frame.
Optionally, the acquiring module is configured to acquire the target object and includes:
the acquisition module is specifically used for capturing images through a preview interface of the video acquisition equipment; receiving a selection instruction of a user on the preview interface; and taking the object selected by the user in the image on the preview interface as a target object based on the selection instruction.
Optionally, the acquiring module is configured to acquire the target object and includes:
the acquisition module is specifically used for acquiring locally stored images or videos; receiving an instruction of a user to select an object in the image or the video; and taking the object selected by the user as a target object based on the instruction.
Optionally, the determining module is configured to determine whether the target object is included in the image frame acquired by the video acquisition device, and includes:
the judgment module is specifically used for judging whether each image frame of the video recorded by the video acquisition equipment comprises the target object or not after the video acquisition equipment records the video;
the storage control module is configured to store the image frame as an image frame in a video if the target object is included in the image frame, including:
the storage control module is specifically configured to store an image frame including the target object as an image frame in the video;
or,
the judging module is used for judging whether the image frame acquired by the video acquisition equipment comprises the target object or not and comprises:
the judgment module is specifically used for judging whether the image frame currently recorded by the video acquisition equipment comprises the target object or not in the process of recording the video by the video acquisition equipment;
the storage control module is configured to store the image frame as an image frame in a video if the target object is included in the image frame, including:
the storage control module is specifically configured to store, if the currently recorded image frame includes the target object, the image frame as an image frame of the video;
or,
the judging module is used for judging whether the image frame acquired by the video acquisition equipment comprises the target object or not and comprises:
the judgment module is specifically used for judging whether the image frame captured in the preview interface of the video acquisition equipment comprises the target object or not before the video acquisition equipment records the video;
the storage control module is configured to store the image frame as an image frame in a video if the target object is included in the image frame, including:
the storage control module is specifically configured to record and store the captured image frame if the image frame includes the target object.
According to the video acquisition method and device, the target object is acquired, whether the target object is included in the image frames acquired by the video acquisition equipment is judged, if yes, the image frames are stored as the image frames in the video to form the video, and only the image frames including the target object are stored to form the video.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a video acquisition method disclosed in an embodiment of the present application;
fig. 2 is a flowchart of another video acquisition method disclosed in the embodiment of the present application;
fig. 3 is a flowchart of another video acquisition method disclosed in the embodiment of the present application;
fig. 4 is a schematic structural diagram of a video capture device according to an embodiment of the present application.
Detailed Description
The embodiment of the application discloses a video acquisition method and a video acquisition device, which can be applied to electronic equipment, wherein the electronic equipment is provided with video acquisition equipment, such as an image acquisition module comprising a camera.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The video acquisition method disclosed in the embodiment of the present application, as shown in fig. 1, includes the following steps:
s101: acquiring a target object;
s102: judging whether the image frame acquired by the video acquisition equipment comprises the target object, if so, executing S103, and if not, executing S104;
s103: storing the image frames as image frames in a video to form the video;
in this embodiment, specifically, the specific implementation manner of determining whether the image frame acquired by the video acquisition device includes the target object may be: after a video acquisition device records a video, whether each image frame of the video recorded by the video acquisition device comprises the target object is judged. In this case, a specific implementation manner of storing the image frames as image frames in the video may be as follows: storing the image frames including the target object as image frames in the video.
S104: forgoing storage of the image frame.
For example, the acquired target object is a certain face, after a video segment is recorded, whether each image frame in the video includes the face is judged, the image frames including the face are stored, and the image frames not including the face are not stored.
As can be seen, in the method of this embodiment, only when the image frame includes the target object, the image frame is stored, otherwise, the image frame is not stored, and therefore, for videos with the same definition, the image frame that is useless for the target object can be removed from the video obtained by using the method of this embodiment, thereby reducing the storage space occupied by the video.
As shown in fig. 2, the still another video acquiring method disclosed in the embodiment of the present application includes the following steps:
s201: starting the video acquisition equipment to enter a preview interface of the video acquisition equipment;
s202: capturing an image through a preview interface of the video capture device;
s203: receiving a selection instruction of a user on the preview interface;
s204: based on the selection instruction, taking an object selected by the user in the image on the preview interface as a target object;
s205: in the process of recording a video by video acquisition equipment, judging whether the image frame currently recorded by the video acquisition equipment comprises the target object, if so, executing S206, and if not, executing S207;
s206: storing the image frame as an image frame of the video to form a video;
s207: discarding the image frame, i.e. not storing the image frame;
alternatively, if the video recording is not finished, the process returns to step S205 until the video recording is finished (not shown).
For example, a user needs to record a video with a mobile phone, and with the method described in this embodiment, after the mobile phone is turned on, the video acquisition software is run, and in the preview interface, the user can select a target object, for example, the user frames two faces a and B on the preview interface, and after the mobile phone receives a selection instruction (an input instruction triggered by a framing action) of the user, the target object is determined to be the two faces a and B. In the process of recording videos by video acquisition software, judging whether a currently recorded image frame comprises a human face A and a human face B, if so, storing the currently recorded image frame, and if not, giving up storage. The stored image frames constitute the finally acquired video file.
That is to say, the method described in this embodiment is different from the above embodiment in that after the video recording is finished, each image frame in the video is discriminated, and only the image frame including the target object is saved, whereas in the method described in this embodiment, in the video recording process, that is, the currently acquired image frame is discriminated, and for the image frame not including the target object, although the image frame has been acquired, the image frame is not saved.
Therefore, by using the method of the embodiment, the target object can be tracked by selecting the target object, so that redundant image frames are effectively avoided, and the space occupation of the video is reduced.
As shown in fig. 3, the still another video acquiring method disclosed in the embodiment of the present application includes the following steps:
s301: acquiring locally stored images or videos;
s302: receiving an instruction of a user to select an object in the image or the video;
s303: based on the instruction, taking the object selected by the user as a target object;
specifically, if the target object is an image, the target object may be determined by receiving a selection instruction input by a user on the image display interface, and if the target object is a video, the target object may be determined by a selection instruction input on the video playing interface.
That is, the user may circle a certain target as a target object in an image or a certain target as a target object in a certain image frame of a video.
S304: before a video acquisition device records a video, judging whether an image frame captured in a preview interface of the video acquisition device comprises the target object, if so, executing S305, and if not, executing S306;
s305: recording and storing the image frames captured in the preview interface as image frames forming a video;
s306: and keeping the state of detection by the preview interface, and returning to execute the step S304 until the video acquisition process is finished.
For example, in this embodiment, the user may first select a target object, detect whether the target object appears using a preview interface of the camera, record the currently previewed image frame if the target object appears, and otherwise, keep the preview detection state without recording and storing.
It can be seen that, compared with the above embodiments, in this embodiment, the video is not recorded, but only kept in the preview state, and when the target object appears in the preview window, the current image frame in the preview window is recorded and stored.
In summary, in the three embodiments, the specific implementation manners of selecting the target object include two types: and taking the object selected by the user in the video preview interface as a target object, and taking the object selected by the user in the local image or video as the target object. Judging whether the image frame acquired by the video acquisition equipment comprises a target object, if so, storing the image frame in a specific implementation mode respectively after video recording, in the video recording process and in three different scenes before video recording. It should be noted that the combination of the specific implementation of the target object and the specific implementation of the judgment and storage based on the three scenes is not limited to the above embodiments, and may be arbitrarily combined and collocated.
For example, an object selected by a user in the preview interface may be used as a target object, before recording a video, it is determined whether a target object is included in an image frame currently captured by the preview interface, if so, the image frame is recorded and stored, otherwise, the detection is continued by the preview interface until the video acquisition process is finished.
Corresponding to the above method embodiment, an embodiment of the present application further discloses a video obtaining apparatus, as shown in fig. 4, including:
an obtaining module 401, configured to obtain a target object;
a determining module 402, configured to determine whether the image frame acquired by the video capturing device includes the target object;
a storage control module 403, configured to store the image frame as an image frame in a video to constitute a video if the target object is included in the image frame.
Further, in this embodiment, the storage control module may be further configured to: discarding storage of the image frame if the target object is not included in the image frame.
Specifically, in this embodiment, a specific implementation manner of the obtaining module obtaining the target object may be as follows: capturing an image through a preview interface of the video capture device; receiving a selection instruction of a user on the preview interface; and taking the object selected by the user in the image on the preview interface as a target object based on the selection instruction.
Or, the specific implementation manner of the obtaining module obtaining the target object may also be: acquiring locally stored images or videos; receiving an instruction of a user to select an object in the image or the video; and taking the object selected by the user as a target object based on the instruction.
Specifically, in this embodiment, the specific implementation manners of the functions of the judging module and the storage control module may include the following three forms:
1. the judgment module is specifically used for judging whether each image frame of the video recorded by the video acquisition equipment comprises the target object or not after the video acquisition equipment records the video; the storage control module is specifically configured to store the image frames including the target object as image frames in the video.
2. The judgment module is specifically used for judging whether the image frame currently recorded by the video acquisition equipment comprises the target object or not in the process of recording the video by the video acquisition equipment; the storage control module is specifically configured to store the image frame as an image frame of the video if the currently recorded image frame includes the target object.
3. The judgment module is specifically used for judging whether the image frame captured in the preview interface of the video acquisition equipment comprises the target object or not before the video acquisition equipment records the video; the storage control module is specifically configured to record and store the captured image frame if the image frame includes the target object.
In the process of video acquisition, the device in the embodiment only stores the image frames including the target object, so that the image frames in the finally obtained video all include the target object, and the image frames which are useless for the target object are avoided, so that the occupation of the video frames on the storage space can be effectively reduced, and the storage pressure of the electronic equipment is reduced.
The functions described in the method of the embodiment of the present application, if implemented in the form of software functional units and sold or used as independent products, may be stored in a storage medium readable by a computing device. Based on such understanding, part of the contribution to the prior art of the embodiments of the present application or part of the technical solution may be embodied in the form of a software product stored in a storage medium and including several instructions for causing a computing device (which may be a personal computer, a server, a mobile computing device or a network device) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A video acquisition method, comprising:
acquiring a target object;
judging whether the image frame acquired by the video acquisition equipment comprises the target object or not;
and if the target object is included in the image frame, storing the image frame as an image frame in a video to form the video.
2. The method of claim 1, further comprising:
discarding storage of the image frame if the target object is not included in the image frame.
3. The method of claim 1 or 2, wherein the acquiring a target object comprises:
capturing an image through a preview interface of the video capture device;
receiving a selection instruction of a user on the preview interface;
and taking the object selected by the user in the image on the preview interface as a target object based on the selection instruction.
4. The method of claim 1 or 2, wherein the acquiring a target object comprises:
acquiring locally stored images or videos;
receiving an instruction of a user to select an object in the image or the video;
and taking the object selected by the user as a target object based on the instruction.
5. The method according to claim 1 or 2, wherein the determining whether the target object is included in the image frames acquired by the video acquisition device, and if the target object is included in the image frames, the storing the image frames as image frames in the video comprises:
after a video is recorded by a video acquisition device, judging whether each image frame of the video recorded by the video acquisition device comprises the target object or not, and storing the image frame comprising the target object as an image frame in the video;
or, in the process of recording a video by a video acquisition device, judging whether the image frame currently recorded by the video acquisition device comprises the target object, and if the image frame currently recorded comprises the target object, storing the image frame as the image frame of the video;
or before the video acquisition equipment records the video, judging whether the image frames captured in the preview interface of the video acquisition equipment comprise the target object or not, and if the captured image frames comprise the target object, recording and storing the image frames.
6. A video acquisition apparatus, comprising:
the acquisition module is used for acquiring a target object;
the judging module is used for judging whether the image frame acquired by the video acquisition equipment comprises the target object or not;
and the storage control module is used for storing the image frames as the image frames in the video to form the video if the target object is included in the image frames.
7. The apparatus of claim 6, wherein the storage control module is further configured to:
discarding storage of the image frame if the target object is not included in the image frame.
8. The apparatus of claim 6 or 7, wherein the means for acquiring is configured to acquire the target object comprises:
the acquisition module is specifically used for capturing images through a preview interface of the video acquisition equipment; receiving a selection instruction of a user on the preview interface; and taking the object selected by the user in the image on the preview interface as a target object based on the selection instruction.
9. The apparatus of claim 6 or 7, wherein the means for acquiring is configured to acquire the target object comprises:
the acquisition module is specifically used for acquiring locally stored images or videos; receiving an instruction of a user to select an object in the image or the video; and taking the object selected by the user as a target object based on the instruction.
10. The apparatus according to claim 6 or 7, wherein the determining module is configured to determine whether the target object is included in the image frames acquired by the video capturing device includes:
the judgment module is specifically used for judging whether each image frame of the video recorded by the video acquisition equipment comprises the target object or not after the video acquisition equipment records the video;
the storage control module is configured to store the image frame as an image frame in a video if the target object is included in the image frame, including:
the storage control module is specifically configured to store an image frame including the target object as an image frame in the video;
or,
the judging module is used for judging whether the image frame acquired by the video acquisition equipment comprises the target object or not and comprises:
the judgment module is specifically used for judging whether the image frame currently recorded by the video acquisition equipment comprises the target object or not in the process of recording the video by the video acquisition equipment;
the storage control module is configured to store the image frame as an image frame in a video if the target object is included in the image frame, including:
the storage control module is specifically configured to store, if the currently recorded image frame includes the target object, the image frame as an image frame of the video;
or,
the judging module is used for judging whether the image frame acquired by the video acquisition equipment comprises the target object or not and comprises:
the judgment module is specifically used for judging whether the image frame captured in the preview interface of the video acquisition equipment comprises the target object or not before the video acquisition equipment records the video;
the storage control module is configured to store the image frame as an image frame in a video if the target object is included in the image frame, including:
the storage control module is specifically configured to record and store the captured image frame if the image frame includes the target object.
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| CN114189646B (en) * | 2020-09-15 | 2023-03-21 | 深圳市万普拉斯科技有限公司 | Terminal control method and device, electronic equipment and storage medium |
| CN112312156A (en) * | 2020-11-06 | 2021-02-02 | 云南腾云信息产业有限公司 | Live broadcast scene reminding method, device, equipment and storage medium |
| CN113052116A (en) * | 2021-04-06 | 2021-06-29 | 深圳华声医疗技术股份有限公司 | Ultrasonic video data processing method and device, ultrasonic equipment and storage medium |
| CN113052116B (en) * | 2021-04-06 | 2022-02-22 | 深圳华声医疗技术股份有限公司 | Ultrasonic video data processing method and device, ultrasonic equipment and storage medium |
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