CN106488300A - A kind of video content inspection method and device - Google Patents
A kind of video content inspection method and device Download PDFInfo
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- CN106488300A CN106488300A CN201610961180.9A CN201610961180A CN106488300A CN 106488300 A CN106488300 A CN 106488300A CN 201610961180 A CN201610961180 A CN 201610961180A CN 106488300 A CN106488300 A CN 106488300A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47217—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The present invention is suitable for field of computer technology, there is provided a kind of video content inspection method and device, the method include：Receiving user's input, the content-keyword of video content to be viewed, content-keyword is retrieved in the video time axle for being built for target video in advance and keyword association relation according to content-keyword, when content-keyword is retrieved, obtain content-keyword corresponding time point on video time axle, the playing progress bar of target video is navigated on the time point, and play target video, so that user can be by checking that the content-keyword of video is quickly positioned to video content to be checked and played, lookup is saved, the time required to positioning video content, improve the experience that user watches video.
Description
Technical field
The invention belongs to field of computer technology, more particularly to a kind of video content inspection method and device.
Background technology
With the popularization of computer and internet, student is learnt by computer and internet more and more, example
Such as, learnt by Internet video or local video file.In study, user is thought to find oneself in study video
During the content for learning or reviewing, generally require ending to be seen from video beginning, or by F.F. or rely on impression play
Progress bar drags to video correspondence position, is in most cases still difficult to disposably find the content that wants, wastes user
Plenty of time, so as to greatly have impact on Consumer's Experience.
Content of the invention
It is an object of the invention to provide a kind of video content inspection method and device, it is intended to solve due to prior art nothing
Method provides a kind of video content and pinpoints inspection method, causes video content positioning, checks that process is complicated, time overhead is excessive and ask
Topic.
On the one hand, the invention provides a kind of video content inspection method, methods described comprises the steps：
The content-keyword of receiving user's input, to be viewed video content；
According to the content-keyword in the video time axle and keyword association relation for being built for target video in advance
Retrieve the content-keyword；
When the content-keyword is retrieved, when the acquisition content-keyword is corresponding on the video time axle
Between point；
The playing progress bar of the target video is navigated on the time point, and plays the target video.
On the other hand, the invention provides a kind of video content checking device, described device includes：
Keyword receiving unit, for the content-keyword of receiving user's input, to be viewed video content；
Key search unit, for according to the content-keyword in the video time axle for being built for target video in advance
With retrieve the content-keyword in keyword association relation；
Time point acquiring unit, for when the content-keyword is retrieved, obtaining the content-keyword described
Corresponding time point on video time axle；And
Video location broadcast unit, for the playing progress bar of the target video is navigated to the time point, and
Play the target video.
The present invention exists according to content-keyword after the content-keyword of receiving user's input, to be viewed video content
Content-keyword is retrieved in the video time axle for being built for target video in advance and keyword association relation, is closed when content is retrieved
During key word, content-keyword corresponding time point on video time axle is obtained, the playing progress bar of target video is navigated to
On time point, and target video is played, such user can be by checking the content-keyword of video to video content to be checked
Quickly positioned and played, lookup, the time required for positioning video content has been saved, has improve the body that user watches video
Test.
Description of the drawings
Fig. 1 is the flowchart of the video content inspection method that the embodiment of the present invention one is provided；
Fig. 2 is the structural representation of the video content checking device that the embodiment of the present invention two is provided；
Fig. 3 is the structural representation of the video content checking device that the embodiment of the present invention two is provided；
Fig. 4 is the structural representation of keyword acquiring unit in the video content checking device that the embodiment of the present invention two is provided
Figure；And
Fig. 5 is the structural representation of keyword acquiring unit in the video content checking device that the embodiment of the present invention two is provided
Figure.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
Implementing for the present invention is described in detail below in conjunction with specific embodiment：
Embodiment one：
Fig. 1 show the embodiment of the present invention one provide video content inspection method realize flow process, for convenience of description,
The part related to the embodiment of the present invention is illustrate only, details are as follows：
In step S101, the content-keyword of receiving user's input, to be viewed video content.
The embodiment of the present invention is applied to video playback apparatus or system, for example, learning machine, mobile terminal or computer.?
In the embodiment of the present invention, when user needs the certain content that checks in target video, can be treated by default interface input
The content-keyword of video content is checked, the content-keyword describes the video content that user will check or review.Wherein, treat
Check that video can be movie and television play, study video etc..
In step s 102, closed in the video time axle for being built for target video in advance and keyword according to content-keyword
Content-keyword is retrieved in connection relation.
In embodiments of the present invention, need to build video time axle and keyword or content-keyword for target video in advance
Incidence relation, i.e., on the basis of the video content of video time point and the corresponding relation of content-keyword, set up video time
On axle, time point and the incidence relation of content-keyword, correspond to video content in video so as to determining according to content-keyword
Time point or position.
Therefore, before the incidence relation for building video time axle and keyword or content-keyword for target video, obtain
The video content keyword of target video is taken, sets up the video content keyword of acquisition and the video time axle of target video afterwards
The corresponding relation of upper time point.
In embodiments of the present invention, when the video content keyword of target video is obtained, it is preferable that regard from target first
Corresponding audio frequency is extracted in frequency, speech recognition is carried out to audio frequency, the text after being identified, then according to default key
Word extraction algorithm obtains the content-keyword of target video from text, so as to realize the content-keyword of target video
Automatically obtain, improve the extraction degree of accuracy of target video content-keyword.
Specifically, after extracting corresponding audio frequency from target video, the pretreatment operation such as noise removal can be carried out to audio frequency,
To improve the accuracy rate of subsequent speech recognition.When speech recognition is carried out to audio frequency, can be according to the pause mark in audio file
Audio file is divided into multiple audio sections, each audio section corresponding time started and dwell time is recorded, and then to multiple
Audio section carries out speech recognition, obtains the corresponding text of multiple audio sections.Preferably, voice knowledge is carried out to multiple audio sections
When other, audio section to be identified can be mated in the advance High frequency speech identification storehouse for building, when to audio frequency to be identified
Section obtains audio section to be identified corresponding text chunk when the match is successful, so as to recognize, according to High frequency speech, the language stored in storehouse
Sound identification audio frequency and the corresponding relation of corresponding recognition result, obtain the corresponding recognition result of audio section, so as to greatly improve voice
The accuracy rate of recognition result.
When the video content keyword of target video is obtained, as another preferred embodiment, mirror can be carried out to target video
Head segmentation, to obtain constituting multiple camera lenses of target video, extracts the key frame under each camera lens, to the corresponding frame figure of key frame
As Text region, and then the Text region result obtained according to each camera lens is carried out, each camera lens of target video is obtained corresponding
Content-keyword, so as to realize the automatic acquisition of the content-keyword of target video, improves target video content-keyword
Extract the degree of accuracy.
The preferred embodiment is particularly well-suited to video learning files, for example, courseware video etc..In the preferred embodiment, camera lens
Be video camera one-time continuous shoot one section of video, be made up of some frames, the picture material inside each camera lens generally identical or
Similar.After target video is carried out shot segmentation, can obtain constituting multiple camera lenses of target video, and then extract each camera lens
Under key frame, by carrying out Text region to the corresponding two field picture of key frame, by carrying out keyword extraction to word, obtain
The corresponding content-keyword of video-frequency band in target video, further, can by keyword and video-frequency band or video time axle when
Between point associate.
In step s 103, when content-keyword is retrieved, content-keyword is obtained corresponding on video time axle
Time point.
In step S104, the playing progress bar of target video is navigated on time point, and plays target video.
The embodiment of the present invention is closed according to content after the content-keyword of receiving user's input, to be viewed video content
Key word retrieves content-keyword in the video time axle built in advance for target video and keyword association relation, when retrieving
During content-keyword, content-keyword corresponding time point on video time axle is obtained, by the playing progress bar of target video
Navigate on time point, and target video is played, such user can be regarded to checking by checking the content-keyword of video
Frequency content is quickly positioned and is played, and has saved lookup, the time required for positioning video content, is improve user's viewing and is regarded
The experience of frequency.
In addition, obtaining the video content keyword of target video, setting up regarding for video content keyword and target video
On frequency time shaft during the corresponding relation of time point, the figure of camera lens key frame in the speech recognition to video sound intermediate frequency or video is adopted
As identification, it is achieved that automatically extracting for content-keyword, the extraction degree of accuracy of target video content-keyword, Jin Erti is improve
The high lookup of user video content or positional accuracy.
One of ordinary skill in the art will appreciate that it is permissible to realize all or part of step in above-described embodiment method
Instruct related hardware to complete by program, described program can be stored in a computer read/write memory medium,
Described storage medium, such as ROM/RAM, disk, CD etc..
Embodiment two：
Fig. 2 shows the structure of the video content checking device that the embodiment of the present invention two is provided, and for convenience of description, only shows
Go out the part related to the embodiment of the present invention, including：
Keyword receiving unit 21, for the content-keyword of receiving user's input, to be viewed video content；
Key search unit 22, for according to content-keyword in the video time axle built in advance for target video and
Content-keyword is retrieved in keyword association relation；
Time point acquiring unit 23, for when content-keyword is retrieved, obtaining content-keyword in video time axle
Upper corresponding time point；And
Video location broadcast unit 24, for the playing progress bar of target video is navigated to time point, and plays mesh
Mark video.
In embodiments of the present invention, need to build video time axle and keyword or content-keyword for target video in advance
Incidence relation, i.e., on the basis of video time point video content and content-keyword corresponding relation, set up video time axle
The incidence relation of upper time point and content-keyword, so as to determining corresponding video content in video according to content-keyword
Time point or position.
Therefore, before the incidence relation for building video time axle and keyword or content-keyword for target video, obtain
The video content keyword of target video is taken, sets up the video content keyword of acquisition and the video time axle of target video afterwards
The corresponding relation of upper time point.It is therefore preferred that as shown in figure 3, video content checking device also includes：
Keyword acquiring unit 31, for obtaining the video content keyword of target video；And
Relation sets up unit 32, for setting up time point on video time axle of the video content keyword with target video
Corresponding relation.
In embodiments of the present invention, when the video content keyword of target video is obtained, it is preferable that regard from target first
Corresponding audio frequency is extracted in frequency, speech recognition is carried out to audio frequency, the text after being identified, then according to default key
Word extraction algorithm obtains the content-keyword of target video from text, so as to realize the content-keyword of target video
Automatically obtain, improve the extraction degree of accuracy of target video content-keyword.
Specifically, after extracting corresponding audio frequency from target video, the pretreatment operation such as noise removal can be carried out to audio frequency,
To improve the accuracy rate of subsequent speech recognition.When speech recognition is carried out to audio frequency, can be according to the pause mark in audio file
Audio file is divided into multiple audio sections, each audio section corresponding time started and dwell time is recorded, and then to multiple
Audio section carries out speech recognition, obtains the corresponding text of multiple audio sections.Preferably, voice knowledge is carried out to multiple audio sections
When other, audio section to be identified can be mated in the advance High frequency speech identification storehouse for building, when to audio frequency to be identified
Section obtains audio section to be identified corresponding text chunk when the match is successful, so as to recognize, according to High frequency speech, the language stored in storehouse
Sound identification audio frequency and the corresponding relation of corresponding recognition result, obtain the corresponding recognition result of audio section, so as to greatly improve voice
The accuracy rate of recognition result.
It is therefore preferred that as shown in figure 4, keyword acquiring unit 31 can include：
Voice recognition unit 311, for extracting corresponding audio frequency from the target video, carries out voice to the audio frequency
Identification, the text after being identified；And
Keyword extraction unit 312, regards for obtaining target from text according to default keyword extraction algorithms
The content-keyword of frequency.
When the video content keyword of target video is obtained, as another preferred embodiment, mirror can be carried out to target video
Head segmentation, to obtain constituting multiple camera lenses of target video, extracts the key frame under each camera lens, to the corresponding frame figure of key frame
As Text region, and then the Text region result obtained according to each camera lens is carried out, each camera lens of target video is obtained corresponding
Content-keyword, so as to realize the automatic acquisition of the content-keyword of target video, improves target video content-keyword
Extract the degree of accuracy.
The preferred embodiment is particularly well-suited to video learning files, for example, courseware video etc..In the preferred embodiment, camera lens
Be video camera one-time continuous shoot one section of video, be made up of some frames, the picture material inside each camera lens generally identical or
Similar.After target video is carried out shot segmentation, can obtain constituting multiple camera lenses of target video, and then extract each camera lens
Under key frame, by carrying out Text region to the corresponding two field picture of key frame, by carrying out keyword extraction to word, obtain
The corresponding content-keyword of video-frequency band in target video, further, can by keyword and video-frequency band or video time axle when
Between point associate.
It is therefore preferred that as shown in figure 5, keyword acquiring unit 31 can also include：
Video segmentation unit 313, for carrying out shot segmentation to target video, to obtain constituting multiple mirrors of target video
Head；
Word recognition unit 314, for extracting the key frame under each camera lens, enters style of writing to the corresponding two field picture of key frame
Word is recognized；And
Keyword obtains subelement 315, for the Text region result obtained according to each camera lens, obtains target video every
The corresponding content-keyword of individual camera lens.
The present invention implements embodiment and is obtaining the video content keyword of target video, setting up video content keyword and mesh
On the video time axle of mark video during the corresponding relation of time point, camera lens in the speech recognition to video sound intermediate frequency or video is adopted
The image recognition of key frame, it is achieved that automatically extracting for content-keyword, improves the extraction standard of target video content-keyword
Exactness, and then improve lookup or the positional accuracy of user video content.
In embodiments of the present invention, each unit of video content checking device can be by corresponding hardware or software unit reality
Existing, each unit can be independent soft and hardware unit, it is also possible to be integrated into a soft and hardware of video playback apparatus or system
Unit, here is not in order to limit the present invention.
Presently preferred embodiments of the present invention is the foregoing is only, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement that is made within god and principle etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of video content inspection method, it is characterised in that methods described comprises the steps：
The content-keyword of receiving user's input, to be viewed video content；
Retrieved in the video time axle for being built for target video in advance and keyword association relation according to the content-keyword
The content-keyword；
When the content-keyword is retrieved, content-keyword corresponding time on the video time axle is obtained
Point；
The playing progress bar of the target video is navigated on the time point, and plays the target video.
2. the method for claim 1, it is characterised in that before the step of retrieving the content-keyword, methods described
Also include：
Obtain the video content keyword of the target video；
Set up the corresponding relation of the video content keyword and time point on the video time axle of the target video.
3. method as claimed in claim 2, it is characterised in that obtain the step of the video content keyword of the target video
Suddenly, including：
Corresponding audio frequency is extracted from the target video, and speech recognition is carried out to the audio frequency, the text text after being identified
Part；
The content-keyword of the target video is obtained according to default keyword extraction algorithms from the text.
4. method as claimed in claim 2, it is characterised in that obtain the step of the video content keyword of the target video
Suddenly, including：
Shot segmentation is carried out to the target video, to obtain constituting multiple camera lenses of the target video；
The key frame under each camera lens is extracted, Text region is carried out to the corresponding two field picture of the key frame；
According to the Text region result that each camera lens is obtained, the corresponding content-keyword of described each camera lens of target video is obtained.
5. a kind of video content checking device, it is characterised in that described device includes：
Keyword receiving unit, for the content-keyword of receiving user's input, to be viewed video content；
Key search unit, for according to the content-keyword in the video time axle for being built for target video in advance and pass
The content-keyword is retrieved in key word incidence relation；
Time point acquiring unit, for when the content-keyword is retrieved, obtaining the content-keyword in the video
Corresponding time point on time shaft；And
Video location broadcast unit, for the playing progress bar of the target video is navigated to the time point, and plays
The target video.
6. device as claimed in claim 5, it is characterised in that described device also includes：
Keyword acquiring unit, for obtaining the video content keyword of the target video；And
Relation sets up unit, during for setting up on the video time axle of the video content keyword with the target video
Between put corresponding relation.
7. device as claimed in claim 6, it is characterised in that the keyword acquiring unit includes：
Voice recognition unit, for extracting corresponding audio frequency from the target video, carries out speech recognition to the audio frequency, obtains
Text to after identification；And
Keyword extraction unit, regards for obtaining the target from the text according to default keyword extraction algorithms
The content-keyword of frequency.
8. device as claimed in claim 6, it is characterised in that the keyword acquiring unit includes：
Video segmentation unit, for carrying out shot segmentation to the target video, to obtain constituting the multiple of the target video
Camera lens；
Word recognition unit, for extracting the key frame under each camera lens, carries out word to the corresponding two field picture of the key frame
Identification；And
Keyword obtains subelement, for the Text region result obtained according to each camera lens, obtain the target video each
The corresponding content-keyword of camera lens.
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