CN110062291A - A kind of digital watermarking addition and extracting method, apparatus and system - Google Patents
A kind of digital watermarking addition and extracting method, apparatus and system Download PDFInfo
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- CN110062291A CN110062291A CN201910352417.7A CN201910352417A CN110062291A CN 110062291 A CN110062291 A CN 110062291A CN 201910352417 A CN201910352417 A CN 201910352417A CN 110062291 A CN110062291 A CN 110062291A
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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
- H04N21/482—End-user interface for program selection
- H04N21/4825—End-user interface for program selection using a list of items to be played back in a given order, e.g. playlists
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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]
- H04N21/80—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
-
- 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
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
Abstract
The embodiment of the invention discloses a kind of digital watermarking addition and extracting methods, apparatus and system, two-path video stream is obtained by the way that the video slicing list generated after digital video cutting to be added to the digital watermarking comprising different watermarking images respectively, the video slicing in two-path video stream is successively chosen using the binary number of User ID, generate the video slicing playlist with User ID binding, by the way that the image zooming-out of the digital watermarking in the illegal video recorded or copied is come out, eye recognition watermarking images therein obtain arrangement information, according to the corresponding relationship of watermarking images and binary digit, obtain one group of binary data, User ID is obtained after conversion, realize that the protection of video copy tracks user class, guarantee that mobile terminal plays the smoothness of video, it is not in the problem of playing Caton, viewing quality is not influenced, The information association to hundreds of millions grades of User ID can be achieved.
Description
Technical field
The present embodiments relate to digital watermark technology fields, and in particular to a kind of digital watermarking addition and extracting method,
Apparatus and system.
Background technique
Method by adding digital watermarking in video can effectively solve between film-maker and conventional entity cinemas
Video copyright protecting problem reduces video in cinemas and the risk stolen by other people such as is recorded, copies.Nowadays with movement
The rapid development of internet, digital video transmission on the internet and broadcasting on mobile phone terminal or other mobile terminals
It puts, user is allowed to carry out viewing under mobile terminal, broken the limitation for being only limitted to the projection equipments such as cinemas, CD-ROI,
But the stolen risk and security risk of new digital video film are increased simultaneously, risk level is increased from cinemas rank
To user class.
The copyright protection that traditional method that digital watermarking is added before video projection is realized can only track cinemas grade
Not, the information for playing cinemas is only known before projection, can not track the user class of mobile terminal.Using existing digital watermarking
It adds algorithm and directly carries out digital watermarking addition meeting when mobile terminal is shown because addition is time-consuming, cause to play Caton, to view
Frequency quality impacts, and influences viewing quality；And can only realize and User ID mark is added in real-time projection video, number
The addition of watermark only limits the addition in a small number of magnitudes, and digital watermarking image size is limited, excessive to will affect video quality, causes
Digital watermarking image can not accommodate longer User ID, and there are the limitation that digital watermarking can accommodate identification information length, contents
More to also result in the digital watermarking extracted unintelligible, it is difficult to support the information association of hundreds of millions grades of user identifiers.
Summary of the invention
For this purpose, the embodiment of the present invention provides a kind of digital watermarking addition and extracting method, apparatus and system, it is existing to solve
Video digital watermark adding method can not track the user class of mobile terminal, can be made in mobile terminal addition digital watermarking
At Caton, video quality is impacted, influences viewing quality, and is difficult to support asking for the information association of hundreds of millions grades of user identifiers
Topic.
To achieve the goals above, the embodiment of the present invention provides the following technical solutions:
According to a first aspect of the embodiments of the present invention, a kind of digital watermarking adding method, the adding method packet are proposed
It includes:
It is N number of video slicing by digital video cutting, and the video slicing is named；
Digital watermarking IK is successively added to N number of video slicing and generates first via video flowing, to N number of video slicing
Successively addition digital watermarking IH generates the second road video flowing, wherein includes marking variable I and watermarking images K in digital watermarking IK
Combination digital information, include the combination digital information of marking variable I and watermarking images H in digital watermarking IH；
It, will be right respectively with the watermarking images K and watermarking images H according to the difference of watermarking images in added digital watermarking
The first identifier and second identifier answered are added separately in the name information of the video slicing；
The first via video flowing and the second road video flowing are merged and obtain alternate video stream, is wrapped in the alternate video stream
N group video slicing group is included, video slicing group described in every group includes two respectively added with digital watermarking IK and digital watermarking IH
Video slicing；
According to the name information of the video slicing, the alternate index file of the alternate video stream is generated；
The User ID of the mobile terminal played for digital video is obtained, and the User ID is converted into fixed digit
Binary data；
According to the corresponding relationship of preset binary digit 0,1 and the first identifier, second identifier, according to described two into
The number of each in data processed includes the corresponding every group of video identified by successively sequence is chosen in the alternate index file
The index information of target video fragment in fragment group；
According to the index information of target video fragment in every group of video slicing group, generating includes N group video slicing group target
The target index file of the index information of video slicing；
According to the target index file, by the target video point for obtaining N group video slicing group in the alternate video stream
Piece list, for being played out in the mobile terminal.
Further, described that digital watermarking IK generation first via video flowing is successively added to N number of video slicing, to N
A video slicing successively adds digital watermarking IH and generates in the second road video flowing, and the addition of digital watermarking includes:
Extract the key frame of the video slicing；
Generate the RGB image of the key frame；
Generate the image information of the digital watermarking；
The image information of the digital watermarking is embedded in the RGB image of the key frame using cat face transformation algorithm；
Fused image is encoded into source data format and the video slicing is written.
Further, the index information according to target video fragment in every group of video slicing group is generated and is regarded comprising N group
Before the target index file of the index information of frequency division piece group target video fragment, further includes:
If the digit I < N of the binary data, recirculate by first of the binary data by suitable
Sequence continues to choose, until selecting the index information of N group video slicing group target video fragment.
Further, the User ID for obtaining the mobile terminal played for digital video, and the User ID is turned
It is changed to the binary data of fixed digit, further includes:
If the fixed digit of the digit deficiency of the binary data, will mend 0 before the binary data.
According to a second aspect of the embodiments of the present invention, a kind of digital watermark adding device is proposed, described device includes:
Divide module, for being N number of video slicing by digital video cutting, and the video slicing is named；
Digital watermarking adding module generates first via view for successively adding digital watermarking IK to N number of video slicing
Frequency flows, and successively adds digital watermarking IH to N number of video slicing and generates the second road video flowing, wherein wraps in digital watermarking IK
The combination digital information of marking variable I and watermarking images K are included, includes the group of marking variable I and watermarking images H in digital watermarking IH
Close digital information；
It, will be right respectively with the watermarking images K and watermarking images H according to the difference of watermarking images in added digital watermarking
The first identifier and second identifier answered are added separately in the name information of the video slicing；
Alternate video stream generation module obtains spare view for merging the first via video flowing and the second road video flowing
Frequency flows, and includes N group video slicing group in the alternate video stream, and video slicing group described in every group includes two respectively added with number
The video slicing of word watermark IK and digital watermarking IH；
According to the name information of the video slicing, the alternate index file of the alternate video stream is generated；
User ID conversion module, for obtaining the User ID for being used for the mobile terminal that digital video plays, and by the use
Family ID is converted to the binary data of fixed digit；
Target video fragment list obtains module, for according to preset binary digit 0,1 and the first identifier, the
The corresponding relationship of two marks, according to the number of each in the binary data, by successively suitable in the alternate index file
Sequence selection includes the index information of target video fragment in every group of video slicing group of corresponding mark；
According to the index information of target video fragment in every group of video slicing group, generating includes N group video slicing group target
The target index file of the index information of video slicing；
According to the target index file, by the target video point for obtaining N group video slicing group in the alternate video stream
Piece list, for being played out in the mobile terminal.
According to a third aspect of the embodiments of the present invention, a kind of digital watermarking extracting method is proposed, for according to first
A kind of digital watermarking of the addition of digital watermarking adding method described in aspect extracts, and the extracting method includes:
It extracts the image information of digital watermarking in digital video and is arranged in order, in the image information of the digital watermarking
Combined information including marking variable I Yu watermarking images K or watermarking images H；
According to the corresponding relationship of preset binary digit 0, the 1 and watermarking images K, watermarking images H, binary system is obtained
Data；
The binary data is subjected to decimal system conversion and obtains the User ID.
Further, described to extract the image information of digital watermarking in digital video and be arranged in order, digital watermarking
Image information extraction include:
Extract the former frame of the key frame and the key frame in digital video；
The former frame of the key frame and the key frame is subjected to similarity comparison；
If similarity difference is less than preset threshold, the RGB image of the key frame is generated；
The image information of digital watermarking in the RGB image of the key frame is extracted using reverse cat face transformation algorithm.
Further, the corresponding pass according to preset binary digit 0,1 and the watermarking images K, watermarking images H
System obtains in binary data, further includes；
For the arrangement section that the image information of the digital watermarking continuously repeats, a bit binary number is obtained.
According to a fourth aspect of the embodiments of the present invention, a kind of digital watermarking extraction element is proposed, for according to first
A kind of digital watermarking of the addition of digital watermarking adding method described in aspect extracts, and the extraction element includes:
Digital watermarking extraction module, for extracting the image information of digital watermarking in digital video and being arranged in order, institute
State the combined information in the image information of digital watermarking including marking variable I and watermarking images K or watermarking images H；
User ID acquisition module, according to preset binary digit 0,1 and the watermarking images K, watermarking images H it is corresponding
Relationship obtains binary data；
The binary data is subjected to decimal system conversion and obtains the User ID.
According to a fifth aspect of the embodiments of the present invention, a kind of digital watermarking addition and extraction system, the system are proposed
Dress is extracted including a kind of digital watermark adding device as described in second aspect and a kind of digital watermarking as described in fourth aspect
It sets.
The embodiment of the present invention has the advantages that
A kind of digital watermarking addition and extracting method, apparatus and system that the embodiment of the present invention proposes, by regarding number
The digital watermarking comprising different watermarking images information is added in the video slicing list generated after frequency cutting respectively, obtains two-way simultaneously
The video flowing of column, before mobile terminal playing, using the binary data information of User ID to the video in two-path video stream
Fragment is successively chosen, and the video slicing playlist with User ID binding is generated, if the video in mobile terminal playing
It is illegally recorded or is copied, the image information of the digital watermarking in the video recorded or copied can extracted, pass through people
The different of outlook not wherein watermarking images obtain arrangement informations, and according to the corresponding relationship of watermarking images and binary digit 0,1,
One group of binary data is obtained, obtains User ID after conversion, is realized with this and user class is tracked to the protection of video copy, and
Can guarantee mobile terminal play video smoothness, be not in play Caton the problem of, do not influence viewing quality, only with comprising compared with
The association to hundreds of millions grades of User ID can be realized in the digital watermarking of few content, and digital watermarking includes that content is less, can be by its ruler
It is very little to tune up, it ensure that digital watermarking extraction is high-visible, recognition effect is good.
Detailed description of the invention
It, below will be to embodiment party in order to illustrate more clearly of embodiments of the present invention or technical solution in the prior art
Formula or attached drawing needed to be used in the description of the prior art are briefly described.It should be evident that the accompanying drawings in the following description is only
It is merely exemplary, it for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer, which is extended, obtains other implementation attached drawings.
Fig. 1 is a kind of flow diagram for digital watermarking adding method that the embodiment of the present invention 1 provides；
Fig. 2 is a kind of structural schematic diagram for digital watermark adding device that the embodiment of the present invention 2 provides；
Fig. 3 is a kind of flow diagram for digital watermarking extracting method that the embodiment of the present invention 3 provides；
Fig. 4 is a kind of structural schematic diagram for digital watermarking extraction element that the embodiment of the present invention 4 provides；
Fig. 5 is the structural schematic diagram of a kind of digital watermarking addition and extraction system that the embodiment of the present invention 5 provides.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Embodiment 1
As shown in Figure 1, the present embodiment proposes a kind of digital watermarking adding method, which includes:
S100, by digital video cutting be N number of video slicing, and to video slicing name.Specifically, passing through first
FFMPEG technology carries out processing to the former digital video file of various encapsulation format and data encoding and decoding are handled, to save one
The trouble of a little digital video specialized procedure processing.Then using HLS technology, by treated, digital video is divided into 2 seconds~10 seconds
Video segmentation section m3u8 video slicing list, can be named as in order 0.ts, 1.ts, 2.ts, 3.ts ..., n.ts.
S110, N number of video slicing is successively added digital watermarking IK generate first via video flowing, to N number of video slicing according to
Secondary addition digital watermarking IH generates the second road video flowing, wherein including marking variable I and watermarking images K in digital watermarking IK
Digital information is combined, includes the combination digital information of marking variable I and watermarking images H in digital watermarking IH.Specifically, variable mark
Know I to be changed with video slicing, marking variable I can be used integer variable number 1,2,3 ... or other variable formats
Indicate, by integer variable number 1,2,3 ... for, for first via video flowing 1 (0.ts, 1.ts, 2.ts, 3.ts ...,
N.ts), the image of the digital watermarking of first video slicing addition is 1H, and second addition is 2K, and third addition is
3K ... ..., n-th addition is NH, for the second road video flowing 2 (0.ts, 1.ts, 2.ts, 3.ts ..., n.ts), first
The image of the digital watermarking of video slicing addition is 1H, and second addition is 2K, and third addition is 3H ... ..., n-th
Addition is NH, and two-path video stream is added to two kinds of watermarking images K and H, and watermarking images combine the variable for having sequence to change
Mark, and the marking variable of the video slicing in two-path video stream list in parallel position is identical.
Further, digital watermarking IK is successively added to N number of video slicing and generates first via video flowing, to N number of video point
Piece successively adds digital watermarking IH and generates in the second road video flowing, and the addition of digital watermarking includes:
Extract the key frame of video slicing；
Generate the RGB image of key frame；
Generate the image information of digital watermarking；
It will be in the RGB image of the image information insertion key frame of digital watermarking using cat face transformation algorithm；
Fused image is encoded into source data format and video slicing is written.
Specifically, detected in digital watermarking addition using I-Frame (key frame), key frame refer in video role or
That frame locating for key operations in object of which movement or variation, can detecte multiple key frames in each video slicing, if
The key frame data format detected is yuv420P, then is first converted into RGB data format, is generated further according to RGB data
RGB image, and according to the image information of the digital information of digital watermarking generation digital watermarking, the image information of digital watermarking includes
The combination of marking variable I and watermarking images K or H, can also be according to the RGB image size of key frame and the image of digital watermarking
How many a digital watermarkings can be added in the RGB image of size calculating key frame, the addition of multiple digital watermarkings are realized, by key frame
RGB image and the image of digital watermarking merged, the image of fusion finally re-encode be reduced to it is identical as former digital video
Source data format be written video slicing, just obtain the digital video fragment added with digital watermarking IK or IH in this way.
S120, according to the difference of watermarking images in added digital watermarking, will distinguish with watermarking images K and watermarking images H
Corresponding first identifier and second identifier are added separately in the name information of video slicing.Illustratively, first identifier uses
Digital " 1 " corresponding watermarking images K, second identifier are added in original basis name information using digital " 2 " corresponding watermarking images H
Timestamp can also be added while first identifier or second identifier, naming rule is that original video fragment name+timestamp+the first is marked
Knowledge/second identifier, such as first via video flowing are as follows:
1(01533017381.ts,11533017381.ts,21533017381.ts,31533017381.ts,…,
N1533017381.ts), wherein 153301738 be timestamp；
Second road video flowing are as follows:
2(01533017382.ts,11533017382.ts,21533017382.ts,31533017382.ts,…,
N1533017382.ts), wherein 153301738 be timestamp.
S130, first via video flowing and the second road video flowing are merged to acquisition alternate video stream, includes N in alternate video stream
Group video slicing group, every group of video slicing group include two videos added with digital watermarking IK and digital watermarking IH point respectively
Piece.After above-mentioned two-path video stream merges, alternate video stream can be indicated are as follows:
12(01533017381.ts,01533017382.ts；11533017381.ts,11533017382.ts；
21533017381.ts,21533017382.ts；31533017381.ts,31533017382.ts；…；
n1533017381.ts,n1533017382.ts)；
In every group of n1533017381.ts, n1533017382.ts, name end is added by the expression of first identifier " 1 "
The watermarking images of digital watermarking are K, and the watermarking images that digital watermarking is added by the expression of first identifier " 2 " in name end are H.
S140, the name information according to video slicing generate the alternate index file of alternate video stream.According to above-mentioned merging
Alternate video stream list in name information, generate new m3u8 alternate index file, and by the alternate video stream of synthesis with
And m3u8 alternate index file stores in CDN server together, mobile terminal first will be in CDN server before user's viewing
The m3u8 alternate index file drawing of storage goes to local.
S150, the User ID for obtaining the mobile terminal played for digital video, and User ID is converted into fixed digit
Binary data.In this implementation, User ID is converted to and fixes 32 binary data, for example User ID is
1291907225, generate binary data are as follows:
1001101000000001111000010011001.
Further, the User ID of the mobile terminal played for digital video is obtained, and User ID is converted into fixation
The binary data of digit, further includes:
If the fixed digit of the digit deficiency of binary data, will mend 0 before binary data.I.e. if binary digit not
Enough 32 are then mended 0 in front, mean that being converted into 4 byte integers (supports the user of 4 byte signless integer value ranges
ID。
S160, according to the corresponding relationship of preset binary digit 0,1 and first identifier, second identifier, according to binary system
The number of each in data includes the corresponding every group of video slicing group identified by successively sequence is chosen in alternate index file
The index information of middle target video fragment.Illustratively, the corresponding first identifier of binary digit 0 is specified, binary digit 1 is corresponding
Second identifier is chosen since first according to the binary data of User ID, and the binary system of User ID is
1001101000000001111000010011001, the first bit binary number is 1, then in alternate index file, chooses the
It include the target video fragment of second identifier " 2 " in one group of video slicing group (01533017381.ts, 01533017382.ts),
That is 01533017382.ts, second binary system is 0, then in alternate index file, chooses second group of video slicing group
It include the target video fragment of first identifier " 1 " in (11533017381.ts, 11533017382.ts), i.e.,
11533017381.ts ... ..., and so on, the id information in every group of video slicing group all in accordance with user selects a target
The index of video slicing, and form final playlist.
S170, according to the index information of target video fragment in every group of video slicing group, generating includes N group video slicing group
The target index file of the index information of target video fragment.
Further, it according to the index information of target video fragment in every group of video slicing group, generates comprising N group video point
Before the target index file of the index information of piece group target video fragment, further includes:
If the digit I < N of binary data, is recirculated by first of binary data and continue to select in order
It takes, until selecting the index information of N group video slicing group target video fragment.
In the selection of above-mentioned target video fragment index, the binary data of User ID fixes 32, initial to regard
Generally to guarantee when frequency division is cut by video slicing into 32 or more video slicings, it can using 32 User ID binary data
To select to complete first 32 groups in alternate index file of target video fragment, in order to guarantee to regard the target of remaining 33-N group
Frequency division piece is completed to choose, then is recirculated since first of binary data, after circulation is multiple, by N group video
The index of the target complete video slicing of fragment group, which selects, to be come, and forms a complete video play lists in this way.
S180, according to target index file, by the target video fragment column for obtaining N group video slicing group in alternate video stream
Table, for being played out in mobile terminal.According to the target index file list of foundation, so that it may in the broadcasting of mobile terminal
Digital video is played according to the agreement of HLS in program.
A kind of digital watermarking adding method that the embodiment of the present invention proposes, passes through the video that will be generated after digital video cutting
The digital watermarking comprising different watermarking images information is added in fragment list respectively, two-way video flowing arranged side by side is obtained, in movement
Before terminal plays, the video slicing in two-path video stream is successively chosen using the binary data information of User ID,
The video slicing playlist with User ID binding is generated, help, which is realized, tracks user class to the protection of video copy, and
Can guarantee mobile terminal play video smoothness, be not in play Caton the problem of, do not influence viewing quality, only with comprising compared with
The association to hundreds of millions grades of User ID can be realized in the digital watermarking of few content, and digital watermarking includes that content is less, can be by its ruler
It is very little to tune up, it ensure that digital watermarking extraction is high-visible, recognition effect is good.
Embodiment 2
Corresponding with above-described embodiment 1, the present embodiment proposes a kind of digital watermark adding device 200, such as Fig. 2 institute
Show, which includes segmentation module 210, digital watermarking adding module 220, alternate video stream generation module 230, User ID
Conversion module 240 and target video fragment list obtain module 250.
Divide module 210, for being N number of video slicing by digital video cutting, and video slicing is named.
Digital watermarking adding module 220 generates first via video for successively adding digital watermarking IK to N number of video slicing
Stream successively adds digital watermarking IH to N number of video slicing and generates the second road video flowing, wherein includes variable in digital watermarking IK
Identify the combination digital information of I and watermarking images K, the combination number including marking variable I and watermarking images H in digital watermarking IH
Information；
It, will be corresponding with watermarking images K and watermarking images H according to the difference of watermarking images in added digital watermarking
First identifier and second identifier are added separately in the name information of video slicing.
Alternate video stream generation module 230 obtains spare view for merging first via video flowing and the second road video flowing
Frequency flows, and includes N group video slicing group in alternate video stream, and every group of video slicing group includes two and be added with digital watermarking IK respectively
With the video slicing of digital watermarking IH；
According to the name information of video slicing, the alternate index file of alternate video stream is generated；
User ID conversion module 240, for obtaining the User ID for being used for the mobile terminal that digital video plays, and by user
ID is converted to the binary data of fixed digit.
Target video fragment list obtains module 250, for according to preset binary digit 0,1 and first identifier, the
The corresponding relationship of two marks, according to the number of each in binary data, by successively sequence chooses packet in alternate index file
The index information of target video fragment in every group of video slicing group containing corresponding mark；
According to the index information of target video fragment in every group of video slicing group, generating includes N group video slicing group target
The target index file of the index information of video slicing；
According to target index file, by obtaining the target video fragment list of N group video slicing group in alternate video stream, with
For being played out in mobile terminal.
Function performed by each component is in above-mentioned implementation in a kind of digital watermark adding device provided in this embodiment
It is discussed in detail in example 1, therefore does not do excessively repeat here.
Embodiment 3
Include digital watermarking digital video after mobile terminal playing, if illegally being recorded or being copied,
It needs to carry out the digital video recorded or copied digital watermarking to extract to obtain mobile terminal subscriber information, realize to user's
Tracking.The present embodiment proposes a kind of digital watermarking extracting method, for a kind of digital watermarking addition side according to embodiment 1
The digital watermarking of method addition extracts, as shown in figure 3, the extracting method includes:
S300, it extracts the image information of digital watermarking in digital video and is arranged in order, the image information of digital watermarking
In include marking variable I and watermarking images K or watermarking images H combined information.
Further, in extracting the image information of digital watermarking in digital video and being arranged in order, the figure of digital watermarking
As information extraction includes:
Extract the former frame of the key frame and key frame in digital video；
The former frame of key frame and key frame is subjected to similarity comparison；
If similarity difference is less than preset threshold, the RGB image of key frame is generated；
The image information of digital watermarking in the RGB image of key frame is extracted using reverse cat face transformation algorithm.
Specifically, carrying out I-Frame (key frame) inspection to the illegal digital video recorded or copied by FFMPEG technology
It surveys, and available multiple key frames, by the way that key frame and its former frame are carried out similarity comparison, if the two similarity difference
It is smaller, then converting RGB24 image for the digital information of key frame, and the image of the digital watermarking in RGB image is extracted,
It include the combination of marking variable I and watermarking images K or H in digital watermarking image, the image that these Detection and Extraction are gone out is according to suitable
Sequence arrangement, such as 1H, 2K, 3K ..., NH.
S310, according to the corresponding relationship of preset binary digit 0,1 and watermarking images K, watermarking images H, obtain two into
Data processed.For example according to preset corresponding relationship, corresponding binary digit 0 is watermarking images K, and binary digit 1 is corresponding
It is watermarking images H, which target video slice section marking variable I corresponding is, a target video slice section is one corresponding
The binary digit of User ID.
Further, it according to the corresponding relationship of preset binary digit 0,1 and watermarking images K, watermarking images H, obtains
In binary data, further include；
For the arrangement section that the image information of digital watermarking continuously repeats, a bit binary number is obtained.
The image extracted can go out watermarking images K or H and combined marking variable I by eye recognition, due to closing
The detection of key frame be in every section of video segment it is multiple, the digital watermarking added is multiple duplicate in every section of slice, non-
In the digital video that method is recorded or copied and detect multiple key frames, then can occur in the image extracted (1H,
1H ...), (2K, 2K ...), (3K, 3K ...), (NH, NH ...), such repeated arrangement section, identical variable mark
Know and watermarking images explanation is to belong to identical video segment section, the corresponding binary digit of every section of video segment section, so
Only obtaining a binary digit, i.e., (1H, 1H ...) corresponding first bit binary number is 1, (2K, 2K ...) right
Answering the second bit binary number is 0 ... ..., and (32H, 32H ...) corresponding 32nd bit binary number is 1, is fixed until obtaining
32 binary data.
It will use the binary number of User ID when video slicing of the video slicing at 32 or more according to the foregoing description
According to the target video slice for carrying out circulation selection residue 33-N group video segment group, so marking variable is 32 in the image extracted
Later number (33-N), belong to be repetitive cycling binary data, digital watermarking figure can be used as these images
As reference the supplement of identification, if such as 1H the image image that does not extract or extract relatively obscure be difficult to recognize whether
For 1H, then can determine the first bit according to the image of clearly 33K, 65K or (32 × n+1) K for extracting
Word is 1.
S320, binary data is carried out to decimal system conversion acquisition User ID.What be will acquire fixes 32 bit binary datas
Again it is converted to User ID, realizes the tracking of the User ID for the mobile terminal that video is illegally recorded or copied.
A kind of digital watermarking extracting method that the present embodiment proposes, if video is illegally recorded in mobile terminal playing
Or copy, the image information of the digital watermarking in the video recorded or copied can be extracted, wherein by eye recognition
The different of watermarking images obtain arrangement information, and according to the corresponding relationship of watermarking images and binary digit 0,1, obtain one group two
Binary data obtains User ID after conversion, is realized with this and tracks user class to the protection of video copy, and can guarantee movement
End plays the smoothness of video, is not in the problem of playing Caton, viewing quality not to be influenced, only with the number comprising less content
The association to hundreds of millions grades of User ID can be realized in word watermark, and digital watermarking includes that content is less, its size can be tuned up, number
Watermark extracting is high-visible, and recognition effect is good.
Embodiment 4
Corresponding with above-described embodiment 3, the present embodiment proposes a kind of digital watermarking extraction element 400, for basis
A kind of digital watermarking of digital watermarking adding method addition described in embodiment 1 extracts, as shown in figure 4, the extraction element
400 include digital watermarking extraction module 410 and user ID acquisition module 420.
Digital watermarking extraction module 410, for extracting the image information of digital watermarking in digital video and being arranged in order,
It include the combined information of marking variable I and watermarking images K or watermarking images H in the image information of digital watermarking.
User ID acquisition module 420, for according to preset binary digit 0,1 and watermarking images K, watermarking images H
Corresponding relationship obtains binary data；
Binary data is subjected to decimal system conversion and obtains User ID.
Function performed by each component is in above-mentioned implementation in a kind of digital watermarking extraction element provided in this embodiment
It is discussed in detail in example 3, therefore does not do excessively repeat here.
Embodiment 5
Corresponding with above-described embodiment 2 and embodiment 4, the present embodiment proposes a kind of digital watermarking addition with extracting and is
System, as shown in figure 5, the system is including a kind of digital watermark adding device 200 as described in Example 2 and as described in Example 4
A kind of digital watermarking extraction element 400.
Function performed by each component of the digital watermark adding device 200 and each component of digital watermark extraction apparatus 400
Performed function has been discussed in detail in the above-described embodiments, does not do excessively repeat here.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (10)
1. a kind of digital watermarking adding method, which is characterized in that the adding method includes:
It is N number of video slicing by digital video cutting, and the video slicing is named；
Digital watermarking IK is successively added to N number of video slicing and generates first via video flowing, successively to N number of video slicing
It adds digital watermarking IH and generates the second road video flowing, wherein include the group of marking variable I and watermarking images K in digital watermarking IK
Digital information is closed, includes the combination digital information of marking variable I and watermarking images H in digital watermarking IH；
It, will be corresponding with the watermarking images K and watermarking images H according to the difference of watermarking images in added digital watermarking
First identifier and second identifier are added separately in the name information of the video slicing；
The first via video flowing and the second road video flowing are merged and obtain alternate video stream, includes N in the alternate video stream
Group video slicing group, video slicing group described in every group include two videos for being added with digital watermarking IK and digital watermarking IH respectively
Fragment；
According to the name information of the video slicing, the alternate index file of the alternate video stream is generated；
Obtain the User ID of the mobile terminal played for digital video, and by the User ID be converted to the two of fixed digit into
Data processed；
According to the corresponding relationship of preset binary digit 0,1 and the first identifier, second identifier, according to the binary number
The number of each in includes the corresponding every group of video slicing identified by successively sequence is chosen in the alternate index file
The index information of target video fragment in group；
According to the index information of target video fragment in every group of video slicing group, generating includes N group video slicing group target video
The target index file of the index information of fragment；
According to the target index file, the target video fragment by obtaining N group video slicing group in the alternate video stream is arranged
Table, for being played out in the mobile terminal.
2. a kind of digital watermarking adding method according to claim 1, which is characterized in that described to N number of video point
Piece successively adds digital watermarking IK and generates first via video flowing, successively adds digital watermarking IH to N number of video slicing and generates
In second road video flowing, the addition of digital watermarking includes:
Extract the key frame of the video slicing；
Generate the RGB image of the key frame；
Generate the image information of the digital watermarking；
The image information of the digital watermarking is embedded in the RGB image of the key frame using cat face transformation algorithm；
Fused image is encoded into source data format and the video slicing is written.
3. a kind of digital watermarking adding method according to claim 1, which is characterized in that described according to every group of video slicing
The index information of target video fragment in group generates the target of the index information comprising N group video slicing group target video fragment
Before index file, further includes:
If the digit I < N of the binary data, by first of the binary data recirculate in order after
It is continuous to choose, until selecting the index information of N group video slicing group target video fragment.
4. a kind of digital watermarking adding method according to claim 1, which is characterized in that described obtain is used for digital video
The User ID of the mobile terminal of broadcasting, and the User ID is converted to the binary data of fixed digit, further includes:
If the fixed digit of the digit deficiency of the binary data, will mend 0 before the binary data.
5. a kind of digital watermark adding device, which is characterized in that described device includes:
Divide module, for being N number of video slicing by digital video cutting, and the video slicing is named；
Digital watermarking adding module generates first via video flowing for successively adding digital watermarking IK to N number of video slicing,
Digital watermarking IH is successively added to N number of video slicing and generates the second road video flowing, wherein includes variable in digital watermarking IK
Identify the combination digital information of I and watermarking images K, the combination number including marking variable I and watermarking images H in digital watermarking IH
Information；
It, will be corresponding with the watermarking images K and watermarking images H according to the difference of watermarking images in added digital watermarking
First identifier and second identifier are added separately in the name information of the video slicing；
Alternate video stream generation module obtains alternate video for merging the first via video flowing and the second road video flowing
It flows, includes N group video slicing group in the alternate video stream, video slicing group described in every group includes two respectively added with number
The video slicing of watermark IK and digital watermarking IH；
According to the name information of the video slicing, the alternate index file of the alternate video stream is generated；
User ID conversion module, for obtaining the User ID for being used for the mobile terminal that digital video plays, and by the User ID
Be converted to the binary data of fixed digit；
Target video fragment list obtains module, for according to preset binary digit 0,1 and the first identifier, the second mark
The corresponding relationship of knowledge, according to the number of each in the binary data, by successively sequence is selected in the alternate index file
Take include target video fragment in every group of video slicing group of corresponding mark index information；
According to the index information of target video fragment in every group of video slicing group, generating includes N group video slicing group target video
The target index file of the index information of fragment；
According to the target index file, the target video fragment by obtaining N group video slicing group in the alternate video stream is arranged
Table, for being played out in the mobile terminal.
6. a kind of digital watermarking extracting method, which is characterized in that for a kind of number according to any one of claims 1-4
The digital watermarking of word watermark adding method addition extracts, and the extracting method includes:
It extracts the image information of digital watermarking in digital video and is arranged in order, include in the image information of the digital watermarking
The combined information of marking variable I and watermarking images K or watermarking images H；
According to the corresponding relationship of preset binary digit 0, the 1 and watermarking images K, watermarking images H, binary number is obtained
According to；
The binary data is subjected to decimal system conversion and obtains the User ID.
7. a kind of digital watermarking extracting method according to claim 6, which is characterized in that number in the extraction digital video
The image information of word watermark is simultaneously arranged in order, and the image information extraction of digital watermarking includes:
Extract the former frame of the key frame and the key frame in digital video；
The former frame of the key frame and the key frame is subjected to similarity comparison；
If similarity difference is less than preset threshold, the RGB image of the key frame is generated；
The image information of digital watermarking in the RGB image of the key frame is extracted using reverse cat face transformation algorithm.
8. a kind of digital watermarking extracting method according to claim 6, which is characterized in that described according to preset binary system
The corresponding relationship of number 0, the 1 and watermarking images K, watermarking images H obtain in binary data, further include；
For the arrangement section that the image information of the digital watermarking continuously repeats, a bit binary number is obtained.
9. a kind of digital watermarking extraction element, which is characterized in that for a kind of number according to any one of claims 1-4
The digital watermarking of word watermark adding method addition extracts, and the extraction element includes:
Digital watermarking extraction module, for extracting the image information of digital watermarking in digital video and being arranged in order, the number
It include the combined information of marking variable I and watermarking images K or watermarking images H in the image information of word watermark；
User ID acquisition module, according to the corresponding pass of preset binary digit 0,1 and the watermarking images K, watermarking images H
System obtains binary data；
The binary data is subjected to decimal system conversion and obtains the User ID.
10. a kind of digital watermarking addition and extraction system, which is characterized in that the system comprises as claimed in claim 5 one
Kind digital watermark adding device and a kind of digital watermarking extraction element as claimed in claim 9.
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