CN107222772A - A kind of method and device for realizing captions processing - Google Patents
A kind of method and device for realizing captions processing Download PDFInfo
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- CN107222772A CN107222772A CN201610162189.3A CN201610162189A CN107222772A CN 107222772 A CN107222772 A CN 107222772A CN 201610162189 A CN201610162189 A CN 201610162189A CN 107222772 A CN107222772 A CN 107222772A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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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
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
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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
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
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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
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4318—Generation of visual interfaces for content selection or interaction; Content or additional data rendering by altering the content in the rendering process, e.g. blanking, blurring or masking an image region
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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
- H04N21/485—End-user interface for client configuration
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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
- H04N21/485—End-user interface for client configuration
- H04N21/4858—End-user interface for client configuration for modifying screen layout parameters, e.g. fonts, size of the windows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
- H04N7/152—Multipoint control units therefor
Abstract
A kind of method and device for realizing captions processing, including：Judge whether caption data changes；When caption data changes, subtitle superposition processing is carried out to caption data, subtitle superposition data are obtained；When caption data does not change, captions processing is carried out according to the judgement whether superposition of data belongs to key frame.Present invention method, when not changed by caption data, captions processing is carried out according to the judgement whether superposition of data belongs to key frame, the performance consumption of subtitle superposition processing, improves the terminal way of video conference processing when reducing video conference processing.
Description
Technical field
Present document relates to but be not limited to video conference field, it is espespecially a kind of realize captions processing method and device.
Background technology
Video conference is that real-time, the interactive multimedia held in local and distal end with TV mode is led to
Letter mode, is to pass through transmission channel in two places or two or more place using Vision Technology and equipment to hold meeting
A kind of means of communication of view.With the development of development of Mobile Internet technology, video conference is widely made
In the several scenes in live and work, no matter where, can be by end of video conference
End participates in meeting, improves the operating efficiency of user, saves the traveling expense caused due to attending a meeting, into
A kind of conferencing received by increasing user.Subtitle superposition processing is one of video conference
Basic function, during video communication, pass through on the video images superposition terminal name, meeting title,
The caption data such as banner and related introduction word, can effectively lift the effect of meeting of video conference, be one
Plant the supplementary means of communication interaction.At present, subtitle superposition processing is usually required to superposition of data individual element
Point processing, performance consumption is very big；Such as, a media server is in the feelings handled without subtitle superposition
Under condition, the video of 100 tunnel terminals can be handled；But, carry out after subtitle superposition processing, due to captions
Overlap-add procedure consumes the performance of media server, therefore media server can only handle 80 tunnel terminals
Video.
The performance consumption of reduction subtitle superposition processing can improve the terminal way of the processing of video conference, carry
The operating efficiency of high conference system；By improving the processing way of video conference, video conference can be reduced
Cost.In correlation technique, the performance consumption for reducing subtitle superposition mainly uses following two modes：One
Planting is：The algorithm of subtitle superposition processing is optimized, for example, when subtitle superposition is handled, will one by one
Pixel progress processing in superposition of data is optimized for：Using predetermined number pixel as pixel groups, with
Pixel groups carry out subtitle superposition processing for processing unit to the pixel in superposition of data；There is a method in which
It is：By accurate calculation superposition of data to reduce the regional extent of superposition of data, due to subtitle superposition performance
The size consumed with superposition of data is directly proportional, therefore accurate calculation superposition of data can reduce pixel processing
Performance consumption.
Correlation technique reduces the performance consumption of subtitle superposition processing, still, subtitle superposition to a certain extent
The performance consumption of processing still influences the terminal way that video conference is handled, and video conference cost is still higher.
The content of the invention
The following is the general introduction of the theme to being described in detail herein.This general introduction is not to limit claim
Protection domain.
The embodiment of the present invention provides a kind of method and device for realizing subtitle superposition, can reduce video conference
The performance consumption that subtitle superposition is handled during processing.
The embodiments of the invention provide a kind of method for realizing captions processing, including：
Judge whether caption data changes；
When caption data changes, subtitle superposition processing is carried out to caption data, subtitle superposition number is obtained
According to；When caption data does not change, captions are carried out according to the judgement whether superposition of data belongs to key frame
Processing.
Optionally, the judgement for whether belonging to key frame according to superposition of data, which carries out captions processing, to be included：
When the superposition of data belongs to key frame, subtitle superposition processing is carried out to the caption data, obtained
The subtitle superposition data；
When the superposition of data is not belonging to key frame, if the rate of change of the superposition of data is more than the first threshold
Value, subtitle superposition processing is carried out to the caption data, obtains the subtitle superposition data；If described
The rate of change of superposition of data be less than or equal to first threshold when, read storage in preceding subtitle superposition data；
The rate of change of the superposition of data includes：The variance value or time domain of the spatial domain encoding and decoding of superposition of data
The change ratio of pixel of encoding and decoding.
Optionally, the judgement for whether belonging to key frame according to superposition of data, which carries out captions processing, to be included：
When the superposition of data belongs to key frame, the subtitle superposition processing is carried out to the caption data,
Obtain the subtitle superposition data；
When the subtitle superposition data are not belonging to key frame, according to predetermined interval reading storage in preceding captions
Superposition of data.
Optionally, before judging whether caption data changes, this method also includes：
Storage is with judging that the time whether caption data changes is recent preceding folded by captions
Plus the subtitle superposition data obtained are handled as described in preceding subtitle superposition data.
Optionally, storage includes in preceding subtitle superposition data：It is stored in default memory cache region
In preceding subtitle superposition data.
Optionally, carrying out subtitle superposition processing includes：Subtitle superposition is carried out using pixel groups as processing unit；
And/or,
The superposition of data of accurate calculation, subtitle superposition is carried out according to the superposition of data of accurate calculation.
On the other hand, present invention method also provides a kind of device for realizing captions processing, including：
Judging unit and processing unit；Wherein,
Judging unit is used for, and judges whether caption data changes；
Processing unit includes：First processing module and Second processing module；Wherein,
First processing module is used for, when caption data changes, and caption data is carried out at subtitle superposition
Reason, obtains subtitle superposition data；
Second processing module is used for, when caption data does not change, whether belongs to pass according to superposition of data
The judgement of key frame carries out captions processing.
Optionally, Second processing module is used for,
When the caption data does not change and the superposition of data belongs to key frame, to the captions number
According to the subtitle superposition processing is carried out, the subtitle superposition data are obtained；
When the caption data does not change and the superposition of data is not belonging to key frame, if described folded
The rate of change of addend evidence is more than first threshold, and subtitle superposition processing is carried out to the caption data, obtains institute
State subtitle superposition data；If the rate of change of the superposition of data is less than or equal to first threshold, read
Storage in preceding subtitle superposition data；
The rate of change of the superposition of data includes：The variance value or time domain of the spatial domain encoding and decoding of superposition of data
The change ratio of pixel of encoding and decoding.
Optionally, Second processing module is used for,
When the caption data does not change and the superposition of data belongs to key frame, to the captions number
According to the subtitle superposition processing is carried out, the subtitle superposition data are obtained；
When the caption data does not change and the superposition of data is not belonging to key frame, between default
Every reading storage in preceding subtitle superposition data.
Optionally, device also includes memory cell, judges whether caption data changes it for described
Before, storage with judge recently preceding time that whether caption data change by subtitle superposition at
The subtitle superposition data obtained are managed as described in preceding subtitle superposition data.
Optionally, device also includes memory cell, default memory cache region is arranged on, for storing
It is described in preceding subtitle superposition data.
Optionally, first processing module is used for, when caption data changes,
Using pixel groups as processing unit to caption data progress subtitle superposition, and/or accurate calculation
Superposition of data, carries out subtitle superposition to the caption data according to the superposition of data of accurate calculation, obtains institute
State subtitle superposition data.
Compared with correlation technique, technical scheme includes：Judge whether caption data changes；
When caption data changes, subtitle superposition processing is carried out to caption data, subtitle superposition data are obtained；
When caption data does not change, captions processing is carried out according to the judgement whether superposition of data belongs to key frame.
Whether present invention method, when not changed by caption data, belong to pass according to superposition of data
The judgement of key frame carries out captions processing, the performance consumption of subtitle superposition processing when reducing video conference processing,
Improve the terminal way of video conference processing.
After reading and understanding accompanying drawing and being described in detail, it can be appreciated that other aspects.
Brief description of the drawings
Fig. 1 embodiment of the present invention realizes the flow chart of the method for captions processing；
Fig. 2 embodiment of the present invention realizes the structured flowchart of the device of captions processing；
Fig. 3 is subtitle superposition processing priority contrast schematic diagram in correlation technique；
Fig. 4 applies the method flow diagram of example for the present invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with accompanying drawing
Embodiments of the invention are described in detail.It should be noted that in the case where not conflicting, this Shen
Please in embodiment and the feature in embodiment can mutually be combined.
Fig. 1 embodiment of the present invention realizes the flow chart of the method for captions processing, as shown in figure 1, including：
Step 100, judge whether caption data changes；
When caption data changes, step 101 is performed；When caption data does not change, step is performed
Rapid 102；
Step 101, to caption data carry out subtitle superposition processing, obtain subtitle superposition data；
Step 102, the judgement for whether belonging to according to superposition of data key frame carry out captions processing.
It should be noted that common knowledge of the definition of key frame for those skilled in the art, to key frame
Judgement for those skilled in the art conventional techniques.
Optionally, in the embodiment of the present invention, word is carried out according to the judgement whether superposition of data belongs to key frame
Curtain processing includes：
When superposition of data belongs to key frame, subtitle superposition processing is carried out to caption data, subtitle superposition is obtained
Data；
When superposition of data is not belonging to key frame, if the rate of change of superposition of data is more than first threshold, to word
Curtain data carry out subtitle superposition processing, obtain subtitle superposition data；If the rate of change of superposition of data is less than
Or during equal to first threshold, read storage in preceding subtitle superposition data；
Here, the rate of change of superposition of data includes：The variance values of the spatial domain encoding and decoding of superposition of data or when
The change ratio of pixel of domain encoding and decoding.
It should be noted that first threshold can be set according to actual conditions；With time domain encoding and decoding
If exemplified by change ratio of pixel, video conference to definition require it is high, can set compared with previous frame
When a pixel changes in superposition of data, current superposition of data, i.e., captions are carried out to caption data and folded
Plus processing, obtain subtitle superposition data；If requiring relatively low to definition, 3 percent can be set
A numerical value between to 10 is as first threshold, and the size of first threshold is according to video conference pair
Image request is set, and can be adjusted.
Optionally, the judgement for whether belonging to key frame according to superposition of data, which carries out captions processing, to be included：
When superposition of data belongs to key frame, subtitle superposition processing is carried out to caption data, subtitle superposition is obtained
Data；
When subtitle superposition data are not belonging to key frame, according to predetermined interval reading storage in preceding subtitle superposition
Data.
It should be noted that predetermined interval can be set according to actual conditions, mainly and video conference
Relevant to image request, video conference is higher to image request, and predetermined interval is bigger；It is general it is default between
Every could be arranged to image spacing of 3 frames to 7 frame ins, it can be adjusted according to actual conditions.
Before judging whether caption data changes, present invention method also includes：
Storage is with judging that the time whether caption data changes is recent preceding folded by captions
Plus the subtitle superposition data that processing is obtained are as in preceding subtitle superposition data.
Optionally, storage includes in preceding subtitle superposition data：It is stored in default memory cache region
In preceding subtitle superposition data.
It should be noted that a kind of of subtitle superposition data stores Jie before memory cache region is simply stored in
Matter, hard disk, other storage regions of internal memory etc. can serve as the storage location in preceding subtitle superposition data.
In present invention method, carrying out subtitle superposition processing includes：Processing unit is used as using pixel groups
Carry out subtitle superposition；And/or,
The superposition of data of accurate calculation, subtitle superposition is carried out according to the superposition of data of accurate calculation.
It should be noted that in present invention method, judging whether captions send conversion, captions are folded
Plus handle and read can implementing in preceding subtitle superposition data etc. by central processing unit for storage, correlation letter
Breath can be stored in storage medium.
When present invention method is not changed by caption data, whether belonged to according to superposition of data
The judgement of key frame carries out captions processing, and the performance of subtitle superposition processing disappears when reducing video conference processing
Consumption, improves the terminal way of video conference processing；On the other hand, video conference cost is due to video council
Discussing the raising of the terminal way of processing also further reduces.
Fig. 2 embodiment of the present invention realizes the structured flowchart of the device of captions processing, as shown in Fig. 2 including：
Judging unit and processing unit；Wherein,
Judging unit is set to, and judges whether caption data changes；
Processing unit includes：First processing module and Second processing module；Wherein,
First processing module is set to, when caption data changes, and subtitle superposition is carried out to caption data
Processing, obtains subtitle superposition data；
Whether Second processing module is set to, when caption data does not change, belonged to according to superposition of data
The judgement of key frame carries out captions processing.
Optionally, Second processing module is arranged to,
When caption data does not change and superposition of data belongs to key frame, captions are carried out to caption data and folded
Plus processing, obtain subtitle superposition data；
When caption data does not change and superposition of data is not belonging to key frame, if the change of superposition of data
Rate is more than first threshold, and subtitle superposition processing is carried out to caption data, obtains subtitle superposition data；If
The rate of change of superposition of data be less than or equal to first threshold when, read storage in preceding subtitle superposition data；
The rate of change of superposition of data includes：The variance value or time domain of the spatial domain encoding and decoding of superposition of data compile solution
The change ratio of pixel of code.
Optionally, Second processing module is arranged to,
When caption data does not change and superposition of data belongs to key frame, captions are carried out to caption data and folded
Plus processing, obtain subtitle superposition data；
When caption data does not change and superposition of data is not belonging to key frame, read and deposit according to predetermined interval
Storage in preceding subtitle superposition data.
Device of the embodiment of the present invention also includes memory cell, and memory cell is set to whether judge caption data
Before changing, storage is with judging that recently preceding time that whether caption data change passes through
The subtitle superposition data that subtitle superposition processing is obtained are as in preceding subtitle superposition data.
Memory cell of the embodiment of the present invention can be arranged on default memory cache region.
Optionally, first processing module of the embodiment of the present invention is set to, when caption data changes,
Using pixel groups as processing unit to the superposition of caption data progress subtitle superposition, and/or accurate calculation
Data, carry out subtitle superposition to caption data according to the superposition of data of accurate calculation, obtain subtitle superposition number
According to.
The inventive method is clearly described in detail below by way of using example, is only used for using example
State the embodiment of the present invention, the protection domain being not intended to limit the present invention.
Using example
This application example to make content of the embodiment of the present invention apparent, to caption data, superposition of data,
Subtitle superposition data and the background data being related to are briefly described, and Fig. 3 folds for captions in correlation technique
Plus processing priority contrast schematic diagram, as shown in figure 3, the region of horizontal stripe is background data region, a left side is oblique
Line region is that superposition of data region, twill left to right region are caption data region, image right or so twill friendship
Fork region is subtitle superposition data area；Background data is total background that video conference is shown, captions are folded
Plus background data is not processed during processing, the caption data that left side is shown carries out captions with superposition of data
Overlap-add procedure obtains the subtitle superposition data of right side display.
Fig. 4 applies the method flow diagram of example for the present invention, as shown in figure 4, including：
Step 400, default memory cache region are used as the region for being stored in preceding subtitle superposition data；
Step 401, be stored in default memory cache region before the moment pass through what subtitle superposition processing was obtained
Subtitle superposition data are as in preceding subtitle superposition data；
Here, include at the preceding moment：At the time of with judging that the time whether caption data changes is nearest；
Step 402, judge whether caption data changes；
When caption data changes, step 403 is performed；When caption data does not change, step is performed
Rapid 404；
This application example, caption data change including：The content of caption data is converted, for example,
Become " 456 " by " 123 "；
Step 403, to caption data carry out subtitle superposition processing, obtain subtitle superposition data；
Step 404, the judgement for whether belonging to according to superposition of data key frame carry out captions processing.
Subtitle superposition processing is carried out to caption data, subtitle superposition data are obtained；Caption data does not become
During change, captions processing is carried out according to the judgement whether superposition of data belongs to key frame.
Optionally, in the embodiment of the present invention, word is carried out according to the judgement whether superposition of data belongs to key frame
Curtain processing includes：
When superposition of data belongs to key frame, subtitle superposition processing is carried out to caption data, subtitle superposition is obtained
Data；
When superposition of data is not belonging to key frame, if the rate of change of superposition of data is more than first threshold, to word
Curtain data carry out subtitle superposition processing, obtain subtitle superposition data；If the rate of change of superposition of data is less than
Or during equal to first threshold, read storage in preceding subtitle superposition data；
Here, the rate of change of superposition of data includes：The variance values of the spatial domain encoding and decoding of superposition of data or when
The change ratio of pixel of domain encoding and decoding.
Optionally, the judgement for whether belonging to key frame according to superposition of data, which carries out captions processing, to be included：
When superposition of data belongs to key frame, subtitle superposition processing is carried out to caption data, subtitle superposition is obtained
Data；
When subtitle superposition data are not belonging to key frame, according to predetermined interval reading storage in preceding subtitle superposition
Data.This application example, predetermined interval is 5 frames, i.e., after being handled using subtitle superposition, enter every 5 frames
Row once reads the performance consumption handled in preceding subtitle superposition data, reduction subtitle superposition of storage.
This application example, read storage in preceding subtitle superposition data, to video conference handle performance
Consumption can almost be disregarded, therefore when carrying out the part captions processing, word when reducing video conference processing
The performance consumption of curtain overlap-add procedure, improves the terminal way of video conference processing.
One of ordinary skill in the art will appreciate that all or part of step in the above method can pass through program
To instruct related hardware (such as processor) to complete, described program can be stored in computer-readable storage
In medium, such as read-only storage, disk or CD.Alternatively, all or part of above-described embodiment
Step can also use one or more integrated circuits to realize.Correspondingly, it is each in above-described embodiment
Module/unit can be realized in the form of hardware, for example, its corresponding function is realized by integrated circuit,
It can also be realized, for example, be stored in by computing device in memory in the form of software function module
Program/instruction realize its corresponding function.The present invention is not restricted to the hardware and software of any particular form
Combination.”.
Although disclosed herein embodiment as above, described content is only to readily appreciate the present invention
And the embodiment used, it is not limited to the present invention.Technology people in any art of the present invention
Member, do not depart from disclosed herein spirit and scope on the premise of, can be in the form of implementation and thin
Any modification and change, but the scope of patent protection of the present invention are carried out on section, still must be with appended right
The scope that claim is defined is defined.
Claims (12)
1. a kind of method for realizing captions processing, it is characterised in that including：
Judge whether caption data changes；
When caption data changes, subtitle superposition processing is carried out to caption data, subtitle superposition number is obtained
According to；When caption data does not change, captions are carried out according to the judgement whether superposition of data belongs to key frame
Processing.
2. according to the method described in claim 1, it is characterised in that described whether to be belonged to according to superposition of data
Carrying out captions processing in the judgement of key frame includes：
When the superposition of data belongs to key frame, subtitle superposition processing is carried out to the caption data, obtained
The subtitle superposition data；
When the superposition of data is not belonging to key frame, if the rate of change of the superposition of data is more than the first threshold
Value, subtitle superposition processing is carried out to the caption data, obtains the subtitle superposition data；If described
The rate of change of superposition of data be less than or equal to first threshold when, read storage in preceding subtitle superposition data；
The rate of change of the superposition of data includes：The variance value or time domain of the spatial domain encoding and decoding of superposition of data
The change ratio of pixel of encoding and decoding.
3. according to the method described in claim 1, it is characterised in that described whether to be belonged to according to superposition of data
Carrying out captions processing in the judgement of key frame includes：
When the superposition of data belongs to key frame, the subtitle superposition processing is carried out to the caption data,
Obtain the subtitle superposition data；
When the subtitle superposition data are not belonging to key frame, according to predetermined interval reading storage in preceding captions
Superposition of data.
4. according to the method in claim 2 or 3, it is characterised in that described to judge that caption data is
It is no change before, this method also includes：
Storage is with judging that the time whether caption data changes is recent preceding folded by captions
Plus the subtitle superposition data obtained are handled as described in preceding subtitle superposition data.
5. according to the method in claim 2 or 3, it is characterised in that the storage in preceding captions
Superposition of data includes：Be stored in default memory cache region in preceding subtitle superposition data.
6. the method according to any one of claims 1 to 3, it is characterised in that the carry out captions
Overlap-add procedure includes：Subtitle superposition is carried out using pixel groups as processing unit；And/or,
The superposition of data of accurate calculation, subtitle superposition is carried out according to the superposition of data of accurate calculation.
7. a kind of device for realizing captions processing, it is characterised in that including：Judging unit and processing unit；
Wherein,
Judging unit is used for, and judges whether caption data changes；
Processing unit includes：First processing module and Second processing module；Wherein,
First processing module is used for, when caption data changes, and caption data is carried out at subtitle superposition
Reason, obtains subtitle superposition data；
Second processing module is used for, when caption data does not change, whether belongs to pass according to superposition of data
The judgement of key frame carries out captions processing.
8. device according to claim 7, it is characterised in that the Second processing module is used for,
When the caption data does not change and the superposition of data belongs to key frame, to the captions number
According to the subtitle superposition processing is carried out, the subtitle superposition data are obtained；
When the caption data does not change and the superposition of data is not belonging to key frame, if described folded
The rate of change of addend evidence is more than first threshold, and subtitle superposition processing is carried out to the caption data, obtains institute
State subtitle superposition data；If the rate of change of the superposition of data is less than or equal to first threshold, read
Storage in preceding subtitle superposition data；
The rate of change of the superposition of data includes：The variance value or time domain of the spatial domain encoding and decoding of superposition of data
The change ratio of pixel of encoding and decoding.
9. device according to claim 7, it is characterised in that the Second processing module is used for,
When the caption data does not change and the superposition of data belongs to key frame, to the captions number
According to the subtitle superposition processing is carried out, the subtitle superposition data are obtained；
When the caption data does not change and the superposition of data is not belonging to key frame, between default
Every reading storage in preceding subtitle superposition data.
10. device according to claim 8 or claim 9, it is characterised in that described device also includes depositing
Storage unit, for it is described judge whether caption data changes before, storage be with judging caption data
The preceding subtitle superposition data for handling acquisition by subtitle superposition of the no time changed recently are used as
It is described in preceding subtitle superposition data.
11. device according to claim 8 or claim 9, it is characterised in that described device also includes depositing
Storage unit, is arranged on default memory cache region, described in preceding subtitle superposition data for storing.
12. the device according to any one of claim 7~9, it is characterised in that first processing
Module is used for, when caption data changes,
Using pixel groups as processing unit to caption data progress subtitle superposition, and/or accurate calculation
Superposition of data, carries out subtitle superposition to the caption data according to the superposition of data of accurate calculation, obtains institute
State subtitle superposition data.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610162189.3A CN107222772A (en) | 2016-03-21 | 2016-03-21 | A kind of method and device for realizing captions processing |
| PCT/CN2017/075418 WO2017162010A1 (en) | 2016-03-21 | 2017-03-02 | Method and apparatus for realizing caption processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610162189.3A CN107222772A (en) | 2016-03-21 | 2016-03-21 | A kind of method and device for realizing captions processing |
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| CN107222772A true CN107222772A (en) | 2017-09-29 |
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| CN201610162189.3A Pending CN107222772A (en) | 2016-03-21 | 2016-03-21 | A kind of method and device for realizing captions processing |
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| CN (1) | CN107222772A (en) |
| WO (1) | WO2017162010A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109982027A (en) * | 2019-02-26 | 2019-07-05 | 视联动力信息技术股份有限公司 | A kind of method of adjustment, the device and system of Subtitle Demonstration parameter |
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| CN112203151B (en) * | 2020-10-09 | 2022-05-17 | 北京字跳网络技术有限公司 | Video processing method and device, electronic equipment and computer readable storage medium |
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| CN1218574C (en) * | 2001-10-15 | 2005-09-07 | 华为技术有限公司 | Interactive video equipment and its caption superposition method |
| CN101500127A (en) * | 2008-01-28 | 2009-08-05 | 德信智能手机技术（北京）有限公司 | Method for synchronously displaying subtitle in video telephone call |
| CN101790049A (en) * | 2010-02-25 | 2010-07-28 | 深圳市茁壮网络股份有限公司 | Newscast video segmentation method and system |
| CN101895694A (en) * | 2010-07-23 | 2010-11-24 | 中兴通讯股份有限公司 | Subtitle superimposition method and device |
| JP2012142881A (en) * | 2011-01-06 | 2012-07-26 | Kddi Corp | Caption editing device, caption editing method, and computer program |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109982027A (en) * | 2019-02-26 | 2019-07-05 | 视联动力信息技术股份有限公司 | A kind of method of adjustment, the device and system of Subtitle Demonstration parameter |
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| WO2017162010A1 (en) | 2017-09-28 |
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