CN106792088A - The encryption and decryption method and system of a kind of plug-in captions, plug-in caption system - Google Patents
The encryption and decryption method and system of a kind of plug-in captions, plug-in caption system Download PDFInfo
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- CN106792088A CN106792088A CN201611161946.1A CN201611161946A CN106792088A CN 106792088 A CN106792088 A CN 106792088A CN 201611161946 A CN201611161946 A CN 201611161946A CN 106792088 A CN106792088 A CN 106792088A
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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
- H04N21/4316—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 for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
-
- 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
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4346—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream involving stuffing data, e.g. packets or bytes
-
- 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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream decryption
-
- 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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
-
- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8358—Generation of protective data, e.g. certificates involving watermark
Abstract
The invention provides encryption and decryption method and system, the plug-in caption system of a kind of plug-in captions, the present invention embeds caption information in the video frame, and original caption information is encrypted and sent, while end decoding video is played, embedded original caption information is decrypted and extracted to original caption information, and original caption information is rendered in the video frame, reduce the influence to video quality, panoramic video quality degradation phenomenon is reduced, so as to lift Consumer's Experience.
Description
Technical field
It is to be related to a kind of plug-in captions to add in particular the invention belongs to virtual reality captions processing technology field
Close, decryption method and system, plug-in caption system.
Background technology
Virtual reality (Virtual Reality, VR) turns into by the most technologies of people's concern in recent years.VR refers to can
To create the computer simulation system with the experiencing virtual world, it utilizes a kind of various means simulation virtual environments of generation, uses
Family is immersed in virtual environment and produces the Three-Dimensional Dynamic what comes into a driver's of interactive mode and the system emulation of entity behavior.Panoramic video is broadcast
Put as one of key technology therein, major video content providers have put into maximum energy and studied.In order to give user
Bring more preferable panoramic video to play experience, research staff from the production of panoramic video, form, render, encode, each side such as edit
Face proposes numerous new technologies, solves the problems, such as to be run into actual production.
At present, for the captions in panoramic video as the important technology in panoramic video later stage compilation, exist following
Difficult point：First, when playing, user can randomly choose different angles viewing panoramic videos to panoramic video, captions need with
Family changes therewith while rotating visual angle, and the central lower zone in screen is shown, it is necessary to ensure will not be because visual angle becomes all the time
Change and lose；Second, captions can not be deformed upon during Video Rendering, distortion, the situation of the quality degradation such as fuzzy, but
Coding based on panoramic video and principle is rendered, panoramic video quality degradation phenomenon easily occurs in frame of video, influence user's body
Test.
The content of the invention
In view of this, the invention provides encryption and decryption method and system, the plug-in caption system of a kind of plug-in captions,
To solve that panoramic video quality degradation phenomenon easily occurs in frame of video in the prior art, so as to cause to reduce asking for Consumer's Experience
Topic.
To achieve the above object, the present invention provides following technical scheme：
A kind of encryption method of plug-in captions, including：
Designated area in the video frame embeds original caption information；
The original caption information is encrypted, the caption information with encryption information after being encrypted.
Wherein, the designated area in the video frame embeds original caption information, including：
It is determined that adding the designated area of the original caption information in the frame of video；
Corresponding institute during the original caption information is embedded into the frame of video in the way of header file and captions entity
State in designated area.
Wherein, it is described that the original caption information is encrypted, the caption information with encryption information after being encrypted,
Including：
The original caption information is processed by digital watermarking coding encrypting and is encrypted, with encryption after being encrypted
The caption information of information.
A kind of encryption system of plug-in captions, including：
Embedded module, original caption information is embedded for designated area in the video frame；
Encrypting module, for being encrypted to the original caption information, the captions with encryption information after being encrypted
Information.
Wherein, the embedded unit includes：
Determining unit, the designated area for determining to be added in the frame of video the original caption information；
Embedded unit, for the original caption information to be embedded into the video in the way of header file and captions entity
In frame in the corresponding designated area.
Wherein, the encrypting module includes：
Ciphering unit, is encrypted for being processed by digital watermarking coding encrypting the original caption information, is obtained
Caption information with encryption information after encryption.
A kind of decryption method of plug-in captions, is applied to be decrypted the caption information with encryption information, should
Method includes：
Acquisition includes the frame of video of the caption information with encryption information；
The frame of video is decoded, and extracts the caption information with encryption information；
The caption information with encryption information is processed by digital watermarking coding and decoding and is decrypted, decrypted
The caption information of decryption information is carried afterwards；
Carried after extracting the decryption in the way of header file and captions entity described in the caption information of decryption information
Original caption information.
A kind of decryption system of plug-in captions, is applied to be decrypted the caption information with encryption information, bag
Include：
Acquiring unit, the frame of video of the caption information with encryption information is included for obtaining；
Decoding extraction unit, for being decoded to the frame of video, and extracts the captions letter with encryption information
Breath；
Decoding unit, is carried out for being processed by digital watermarking coding and decoding the caption information with encryption information
Decryption, the caption information with decryption information after being decrypted；
Extraction unit, for extracted in the way of header file and captions entity decryption after with decryption information captions believe
Original caption information in breath.
A kind of plug-in caption system, including：
Captions add module, original caption information is embedded for designated area in the video frame, and to the original word
Curtain information is processed by digital watermarking coding encrypting and is encrypted, the caption information with encryption information after being encrypted；
Caption decoding module, for the caption information with encryption information described in being obtained in the captions add module
Processed by digital watermarking coding and decoding at presentation of video frames end and be decrypted, and extract the word with decryption information after decryption
Original caption information in curtain information.
Preferably, also include：
Caption rendering module, for that will be processed by the digital watermarking coding encrypting and the digital watermarking coding and decoding
The described original caption information that treatment is obtained is rendered in the frame of video.
Via above-mentioned technical scheme understand, compared with prior art, the invention provides a kind of encryption of plug-in captions,
Decryption method and system, plug-in caption system, the present invention embed caption information in the video frame, and original caption information is carried out
Encrypting and transmitting, while end decoding video is played, is decrypted and extracts embedded original captions to original caption information
Information, and original caption information is rendered in the video frame, the influence to video quality is reduced, reduce panoramic video quality
Degradation phenomena, so as to lift Consumer's Experience.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of encryption method schematic flow sheet of plug-in captions provided in an embodiment of the present invention；
Fig. 2 is the specific method schematic flow sheet of the step 101 in Fig. 1 provided in an embodiment of the present invention；
Fig. 3 a are provided in an embodiment of the present invention to add original captions in some row pixels on frame of video bottom or top
The predeterminated position schematic diagram of information；
Fig. 3 b are provided in an embodiment of the present invention to add original caption information in the pixel of n line numbers is filled up in frame of video bottom
Predeterminated position schematic diagram；
Fig. 4 a are directly to show original caption information instead of pixel value insertion for embedded mode provided in an embodiment of the present invention
It is intended to；
Fig. 4 b are that embedded mode provided in an embodiment of the present invention is that frequency domain by original caption information in certain pixel value enters
The embedded schematic diagram of row；
Fig. 4 c are that embedded mode provided in an embodiment of the present invention is at bit high of certain pixel value by original caption information
Carry out being embedded in schematic diagram；
Fig. 5 is a kind of encryption system structural representation of plug-in captions provided in an embodiment of the present invention；
Fig. 6 is a kind of decryption method schematic flow sheet of plug-in captions provided in an embodiment of the present invention；
Fig. 7 is a kind of decryption system structural representation of plug-in captions provided in an embodiment of the present invention；
Fig. 8 is a kind of system structure diagram of plug-in captions provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The present invention proposes a kind of encryption implementation method of plug-in captions in panoramic video stream, designated area in the video frame
Embedded caption information, is encoded, and decoding is embedded in the caption information of designated area while end decryption frame of video is played, and
Rendered, to solve that panoramic video quality degradation phenomenon easily occurs in frame of video in the prior art, used so as to cause to reduce
The problem of family experience.
Accompanying drawing 1 is referred to, Fig. 1 is a kind of encryption method schematic flow sheet of plug-in captions provided in an embodiment of the present invention.
As shown in figure 1, the embodiment of the invention discloses a kind of encryption method of plug-in captions, the method specifically includes following steps：
S101, designated area in the video frame embed original caption information.
Specifically, as shown in Fig. 2 the step may include steps of：
S1011, determination add the designated area of original caption information in the video frame.
It should be noted that in the present embodiment, it is necessary first to specified caption information Adding Area in the video frame, this
Locate the specified caption information of description as original caption information, following two determination modes can be used：1) in frame of video bottom
Or be added in some row pixels on top, its advantage is that will not increase extra code check or increased code check seldom, video
The size constancy (W*H) of frame, shortcoming to be possible to influence video quality, but due in bottom or top and only a few rows, no
Easily cause the experience of user；2) pixel of n line numbers is filled up in frame of video bottom, the quantity combination coding rule of n is carried out
Consider, be typically set to 16 integral multiple, caption information is embedded into the white space filled up, its advantage is not interfere with video
Quality, shortcoming is that can bring extra code check, but due to embedded regional change very little and color is single, the lifting of code check has very much
Limit, the size of frame of video is W* (H+n), and wherein W is the length of frame of video, and H is the width of frame of video.Specifically, original captions
As shown in Figure 3 a and Figure 3 b shows, wherein Fig. 3 a are provided in an embodiment of the present invention on frame of video bottom or top to information point of addition
The predeterminated position schematic diagram of original caption information is added in some row pixels, Fig. 3 b are provided in an embodiment of the present invention in frame of video
The predeterminated position schematic diagram that original caption information is added in the pixel of n line numbers is filled up in bottom.
S1012, original caption information is embedded into frame of video in the way of header file and captions entity in it is corresponding specify
In region.
It should be noted that in the present embodiment, a kind of original caption information point of addition is selected, by original caption information
In being embedded into frame of video in the way of header file and captions entity, specific embedded mode can be selected original caption information
Directly replace pixel value, it is also possible to be embedded in the frequency domain of certain pixel value or bit high.Specific embedded flow is as schemed
Shown in 4a, Fig. 4 b and Fig. 4 c, wherein, Fig. 4 a are by original caption information direct generation for embedded mode provided in an embodiment of the present invention
Schematic diagram is embedded in for pixel value；Fig. 4 b are in certain pixel by original caption information for embedded mode provided in an embodiment of the present invention
The frequency domain of value carries out being embedded in schematic diagram；Fig. 4 c are at certain by original caption information for embedded mode provided in an embodiment of the present invention
Bit high of pixel value carries out being embedded in schematic diagram.
S102, original caption information is encrypted, the caption information with encryption information after being encrypted.
Specifically, the encryption of the step can use following cipher mode：
Original caption information is encrypted by incompressible and transmission loss digital watermarking coded treatment, is encrypted
The caption information of encryption information is carried afterwards.
It should be noted that the present embodiment in order to avoid Video coding and transmission for decoding end influence, it is necessary to for
Embedding information carries out the digital watermarking coded treatment of incompressible and anti-transmission loss, digital watermark technology (Digital
Watermarking) be some identification informations (i.e. digital watermarking) are directly embedded into the middle of digital carrier it is (multimedia, document, soft
Part etc.) be the secondary indication structure of specific region (modification), and do not influence the use value of original vector, be also not easy to be ascertained and
Change again.
On the basis of method disclosed above, the embodiment of the present invention additionally provides a kind of system.
Accompanying drawing 5 is referred to, Fig. 5 is a kind of encryption system structural representation of plug-in captions provided in an embodiment of the present invention.
As shown in figure 5, the embodiment of the invention provides a kind of encryption system of plug-in captions, the system concrete structure includes：Embedded mould
Block 501 and encrypting module 502, wherein：
Embedded module 501, original caption information is embedded for designated area in the video frame；
Encrypting module 502, for being encrypted to original caption information, the captions with encryption information are believed after being encrypted
Breath.
Wherein, the embedded unit 501 includes：
Determining unit, the designated area of original caption information is added for determination in the video frame；
Embedded unit, for original caption information to be embedded into frame of video in the way of header file and captions entity in correspondence
Designated area in.
Wherein, the encrypting module 502 includes：
Ciphering unit, is encrypted for being processed by digital watermarking coding encrypting original caption information, is encrypted
The caption information of encryption information is carried afterwards.
The present embodiment provides a kind of encryption method and system of plug-in captions, and determination in the video frame embeds original captions
The designated area of information, the designated area is embedded into by original caption information, is then encrypted original caption information,
The caption information with encryption information is sent to broadcasting end after being encrypted.
Accompanying drawing 6 is referred to, Fig. 6 is a kind of decryption method flow chart of plug-in captions provided in an embodiment of the present invention.Such as Fig. 6
It is shown, the embodiment of the invention discloses a kind of decryption method of plug-in captions, it is applied to the caption information with encryption information
It is decrypted, the method specifically includes following steps：
S601, acquisition include the frame of video of the caption information with encryption information；
S602, frame of video is decoded, and extract the caption information with encryption information；
S603, to the caption information with encryption information by digital watermarking coding and decoding process be decrypted, solved
Caption information with decryption information after close；
S604, extract in the way of header file and captions entity original in the caption information with decryption information after decryption
Caption information.
In the present embodiment, it is necessary to explanation, needs according to scrambled end pair playing after termination receives frame of video
The mode answered carries out the corresponding decoding process of digital watermarking, and frame of video is reduced into the result before encryption, then with head text
The mode of part captioning entity is directly extracted or frequency domain mode or bit high extraction caption informations in respective pixel, then by original
Rendered in beginning caption information frame of video after the decoding.
On the basis of decryption method disclosed above, a kind of decryption system is also disclosed.
Accompanying drawing 7 is referred to, Fig. 7 is a kind of decryption system structural representation of plug-in captions provided in an embodiment of the present invention.
As shown in fig. 7, the embodiment of the invention provides a kind of decryption system of plug-in captions, the system specifically includes following structure：
Acquiring unit 701, the frame of video of the caption information with encryption information is included for obtaining；
Decoding extraction unit 702, for being decoded to frame of video, and extracts the caption information with encryption information；
Decoding unit 703, is carried out for being processed by digital watermarking coding and decoding the caption information with encryption information
Decryption, the caption information with decryption information after being decrypted；
Extraction unit 704, for extracted in the way of header file and captions entity decryption after with decryption information word
Original caption information in curtain information.
The present embodiment provides a kind of decryption method and system of plug-in captions, play needed after termination receives frame of video by
The corresponding decoding process of digital watermarking is carried out according to the corresponding mode in scrambled end, frame of video is reduced into the knot before encryption
Really, then directly extracted or frequency domain mode or bit high extraction captions in respective pixel in the way of header file captioning entity
Information, then will be rendered in original caption information frame of video after the decoding.
On the basis of embodiment disclosed above, accompanying drawing 8 is referred to, Fig. 8 is provided in an embodiment of the present invention a kind of outer
Hang caption system structural representation.As shown in figure 8, the embodiment of the invention discloses a kind of plug-in caption system, the system is specific
It is as follows including structure：
Captions add module 801, original caption information is embedded for designated area in the video frame, and to original captions
Information is processed by digital watermarking coding encrypting and is encrypted, the caption information with encryption information after being encrypted；
Caption decoding module 802, for being regarded to the caption information with encryption information obtained in captions add module
Frequency frame broadcasting end is processed by digital watermarking coding and decoding and is decrypted, and extracts the captions letter with decryption information after decryption
Original caption information in breath.
Preferably, the system also includes：
Caption rendering module 803, for that will be processed and digital watermark encoder decoding process by digital watermarking coding encrypting
The original caption information for obtaining is rendered in frame of video.
, be added to for original caption information by captions add module regarded by a kind of plug-in caption system that the present embodiment is provided
Specified location in frequency frame, and original caption information is encrypted, send to captions deciphering module, the caption information after encryption
Decoded at presentation of video frames end, and original captions information is extracted, caption information by original after decryption finally
Carry out rendering broadcasting in frame of video, realize plug-in caption information, be difficult to be distorted by people in the process, and due in specified location
Addition specifies caption information not produced on video quality to be influenceed.
In sum, the invention provides encryption and decryption method and system, the plug-in caption system of a kind of plug-in captions,
The present invention embeds caption information in the video frame, and original caption information is encrypted and sent, and is playing end decoding video
While, embedded original caption information is decrypted and extracted to original caption information, and by original caption information in video
Rendered in frame, reduced the influence to video quality, panoramic video quality degradation phenomenon is reduced, so as to lift Consumer's Experience.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation is all difference with other embodiment, between each embodiment identical similar part mutually referring to.
Method proposed by the invention is exemplarily described above in association with accompanying drawing, the explanation of above example is
It is used to help understand core concept of the invention.For those of ordinary skill in the art, according to thought of the invention, specific
Be will change in implementation method and range of application.In sum, this specification content should not be construed as to of the invention
Limitation.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The scope most wide for causing.
Claims (10)
1. a kind of encryption method of plug-in captions, it is characterised in that including：
Designated area in the video frame embeds original caption information；
The original caption information is encrypted, the caption information with encryption information after being encrypted.
2. encryption method according to claim 1, it is characterised in that the designated area in the video frame embeds original
Caption information, including：
It is determined that adding the designated area of the original caption information in the frame of video；
The corresponding finger during the original caption information is embedded into the frame of video in the way of header file and captions entity
Determine in region.
3. encryption method according to claim 1, it is characterised in that described to be encrypted to the original caption information,
Caption information with encryption information after being encrypted, including：
The original caption information is processed by digital watermarking coding encrypting and is encrypted, encryption information is carried after being encrypted
Caption information.
4. a kind of encryption system of plug-in captions, it is characterised in that including：
Embedded module, original caption information is embedded for designated area in the video frame；
Encrypting module, for being encrypted to the original caption information, the caption information with encryption information after being encrypted.
5. encryption system according to claim 4, it is characterised in that the embedded unit includes：
Determining unit, the designated area for determining to be added in the frame of video the original caption information；
Embedded unit, for the original caption information to be embedded into the frame of video in the way of header file and captions entity
In the corresponding designated area.
6. encryption system according to claim 4, it is characterised in that the encrypting module includes：
Ciphering unit, is encrypted for being processed by digital watermarking coding encrypting the original caption information, is encrypted
The caption information of encryption information is carried afterwards.
7. a kind of decryption method of plug-in captions, it is characterised in that be applied to enter the caption information with encryption information
Row decryption, the method includes：
Acquisition includes the frame of video of the caption information with encryption information；
The frame of video is decoded, and extracts the caption information with encryption information；
The caption information with encryption information is processed by digital watermarking coding and decoding and is decrypted, band after being decrypted
There is the caption information of decryption information；
It is described original in the caption information with decryption information after extracting the decryption in the way of header file and captions entity
Caption information.
8. a kind of decryption system of plug-in captions, it is characterised in that be applied to enter the caption information with encryption information
Row decryption, including：
Acquiring unit, the frame of video of the caption information with encryption information is included for obtaining；
Decoding extraction unit, for being decoded to the frame of video, and extracts the caption information with encryption information；
Decoding unit, is solved for being processed by digital watermarking coding and decoding the caption information with encryption information
It is close, the caption information with decryption information after being decrypted；
Extraction unit, for extracting the decryption in the way of header file and captions entity after with decryption information captions believe
Described original caption information in breath.
9. a kind of plug-in caption system, it is characterised in that including：
Captions add module, embeds original caption information, and the original captions are believed for designated area in the video frame
Breath is processed by digital watermarking coding encrypting and is encrypted, the caption information with encryption information after being encrypted；
Caption decoding module, for being regarded to the caption information with encryption information described in being obtained in the captions add module
Frequency frame broadcasting end is processed by digital watermarking coding and decoding and is decrypted, and extracts the captions letter with decryption information after decryption
Described original caption information in breath.
10. plug-in caption system according to claim 9, it is characterised in that also include：
Caption rendering module, is processed for that will be processed by the digital watermarking coding encrypting with the digital watermarking coding and decoding
The described original caption information for obtaining is rendered in the frame of video.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611161946.1A CN106792088B (en) | 2016-12-15 | 2016-12-15 | Plug-in subtitle encryption and decryption method and system and plug-in subtitle system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611161946.1A CN106792088B (en) | 2016-12-15 | 2016-12-15 | Plug-in subtitle encryption and decryption method and system and plug-in subtitle system |
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| CN106792088A true CN106792088A (en) | 2017-05-31 |
| CN106792088B CN106792088B (en) | 2020-06-30 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107396203A (en) * | 2017-09-06 | 2017-11-24 | 深圳市视维科技股份有限公司 | A kind of method based on the plug-in captions of IJKPlayer |
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