CN107995500B - Video watermark recognition methods, device and terminal - Google Patents
Video watermark recognition methods, device and terminal Download PDFInfo
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- CN107995500B CN107995500B CN201711023742.6A CN201711023742A CN107995500B CN 107995500 B CN107995500 B CN 107995500B CN 201711023742 A CN201711023742 A CN 201711023742A CN 107995500 B CN107995500 B CN 107995500B
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/23418—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics
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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
- H04N21/44—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
- H04N21/44008—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 operations for analysing video streams, e.g. detecting features or characteristics in the video stream
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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
- H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
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Abstract
The embodiment of the invention provides a kind of video watermark recognition methods, device and terminals, the method comprise the steps that according to every frame video image in spatial domain watermark validation template and video to be identified, the corresponding numerical value of each frame video image is determined respectively, generates the first sequence of values；According to time domain watermark validation template, determines the corresponding time-domain value of every frame video image in the video to be identified, generate second value sequence；The second value sequence of interception preset length obtains the first subsequence；It is sliding unit with single video frame, slides multiple second subsequences of interception with the first subsequence equal length frame by frame since the first numerical value of first sequence of values；The related coefficient of first subsequence Yu each second subsequence is determined respectively；Determine in the video file to be identified whether be embedded in watermark according to each related coefficient.The video watermark identifying schemes provided through the embodiment of the present invention can effectively identify video watermark.
Description
Technical field
The present invention relates to technical field of video processing, more particularly to a kind of video watermark recognition methods, device and terminal.
Background technique
It is at present protection video copy, video playing platform is usually embedded in video watermark in the video that user uploads.Depending on
Frequency watermark can be divided into space watermark and transform domain watermark two major classes.Video watermarking algorithms are all essentially earlier
In spatial domain, by change certain pixels gray scale will hidden watermark information be embedded.Space domain, which has, to be calculated
The advantage that method is simple, speed is fast, easy to accomplish, and the recovery carrier image and watermark information that it almost can be lossless, therefore
Space watermark is widely used.
Since spatial domain watermark is widely used with video copyright protecting, correspondingly technical staff is more dedicated to airspace water
The research for printing recognition methods, leading to existing watermark recognition methods is mostly the identification for being directed to spatial domain watermark.And for fusion airspace,
Two dimension video watermarks generated of transform domain, existing watermark recognition methods can not effectively identify it.
Summary of the invention
The embodiment of the present invention provides a kind of video watermark recognition methods, device and terminal, to solve existing video watermark
It can not be asked what two fusion airspace, transform domain dimension video watermarks generated were effectively identified present in identifying schemes
Topic.
According to one aspect of the present invention, a kind of video watermark recognition methods is provided, which comprises
According to every frame video image in spatial domain watermark validation template and video to be identified, each frame video image is determined respectively
Corresponding numerical value generates the first sequence of values；According to time domain watermark validation template, every frame video in the video to be identified is determined
The corresponding time-domain value of image generates second value sequence；The second value sequence of interception preset length obtains the first subsequence；With
Single video frame is sliding unit, slides interception and the described first sub- sequence frame by frame since the first numerical value of first sequence of values
Multiple second subsequences of column equal length；The related coefficient of first subsequence Yu each second subsequence is determined respectively；
Determine in the video file to be identified whether be embedded in watermark according to each related coefficient.
Optionally, described according to every frame video image in spatial domain watermark validation template and video to be identified, it determines respectively
The corresponding numerical value of each frame video image, the step of generating the first sequence of values, comprising: obtain preset spatial domain watermark verifying mould
Plate；Determine the resolution ratio of video image in the video to be identified；Resolution adjustment by the spatial domain watermark validation template is
It is big with the resolution ratio of the video image etc., generate the corresponding spatial domain watermark of the video image；According to the spatial domain watermark with
And every frame video image in the video to be identified, the corresponding numerical value of each frame video image is determined respectively, generates the first numerical value sequence
Column.
Optionally, described according to every frame video image in the spatial domain watermark and the video to be identified, it determines respectively
The corresponding numerical value of each frame video image, the step of generating the first sequence of values, comprising: for every frame in the video to be identified
Video image, it is corresponding with each pixel in the spatial domain watermark by the corresponding pixel value of pixel each in the video image
Airspace value is corresponding to be multiplied and sums, and obtains the first numerical value；According to the playing sequence of each frame video image, by each frame video image pair
The first numerical value answered, which is ranked up, generates the first sequence of values.
Optionally, described according to time domain watermark validation template, when determining that every frame video image is corresponding in video to be identified
The step of thresholding, generation second value sequence, comprising: obtain preset time domain watermark validation template；It is verified according to time domain watermark
The transformation rule of template determines the corresponding time-domain value of every frame video image in the video file to be identified；According to each frame video
The corresponding time-domain value of each frame video image is ranked up and generates second value sequence by the playing sequence of image.
Optionally, described that the step that watermark whether is embedded in the video file to be identified is determined according to each related coefficient
Suddenly, comprising: each related coefficient is compared with preset threshold respectively；It is greater than the phase relation of the preset threshold if it exists
Number, it is determined that have been inserted into watermark in the video file to be identified；It is greater than the related coefficient of the preset threshold if it does not exist, then
It determines in the video file to be identified and is not embedded into watermark.
Optionally, the spatial domain watermark validation template by pixel value be the first preset value, the second preset value pixel group
At；The time domain watermark validation template is the cosine curve of the first predeterminated frequency, is sampled, is given birth to according to the second predeterminated frequency
At result sequence.
According to another aspect of the present invention, a kind of video watermark identification device is provided, described device includes:
First ray generation module is configured as according to frame video every in spatial domain watermark validation template and video to be identified
Image determines the corresponding numerical value of each frame video image respectively, generates the first sequence of values；Second sequence generating module, is configured
According to time domain watermark validation template, to determine the corresponding time-domain value of every frame video image in the video to be identified, second is generated
Sequence of values；First interception module, the second value sequence for being configured as interception preset length obtain the first subsequence；Second section
Modulus block is configured as sliding frame by frame since the first numerical value of first sequence of values with single video frame for sliding unit
Multiple second subsequences of interception and the first subsequence equal length；Related coefficient determining module is configured to determine
The related coefficient of first subsequence and each second subsequence；As a result determining module is configured as according to each phase
Relationship number determines in the video file to be identified whether be embedded in watermark.
Optionally, the First ray generation module includes: the first acquisition submodule, is configured as obtaining preset airspace
Watermark verification template；Adjusting submodule is configured to determine that the resolution ratio of video image in the video to be identified；By the sky
The resolution adjustment of domain watermark verification template be it is big with the resolution ratio of the video image etc., it is corresponding to generate the video image
Spatial domain watermark；First generates submodule, is configured as according to every frame video in the spatial domain watermark and the video to be identified
Image determines the corresponding numerical value of each frame video image respectively, generates the first sequence of values.
Optionally, the first generation submodule includes: computing unit, is configured as in the video to be identified
Every frame video image, by the corresponding pixel value of pixel each in the video image, with each pixel pair in the spatial domain watermark
The airspace value answered is corresponding to be multiplied and sums, and obtains the first numerical value；Sequencing unit is configured as the broadcasting according to each frame video image
Sequentially, corresponding first numerical value of each frame video image is ranked up and generates the first sequence of values.
Optionally, second sequence generating module includes: the second acquisition submodule, is configured as obtaining preset time domain
Watermark verification template；Time-domain value determines submodule, is configured as the transformation rule according to time domain watermark validation template, determine described in
The corresponding time-domain value of every frame video image in video file to be identified；Second generates submodule, is configured as according to each frame video
The corresponding time-domain value of each frame video image is ranked up and generates second value sequence by the playing sequence of image.
Optionally, the result determining module includes: comparison submodule, be configured to by each related coefficient with
Preset threshold is compared；First determines submodule, is configured as being greater than the related coefficient of the preset threshold if it exists, then really
Watermark is had been inserted into the fixed video file to be identified；Second determines submodule, is configured as being greater than if it does not exist described default
The related coefficient of threshold value, it is determined that be not embedded into watermark in the video file to be identified.
Optionally, the spatial domain watermark validation template by pixel value be the first preset value, the second preset value pixel group
At；The time domain watermark validation template is the cosine curve of the first predeterminated frequency, is sampled, is given birth to according to the second predeterminated frequency
At result sequence.
In accordance with a further aspect of the present invention, a kind of terminal is provided, comprising: memory, processor and be stored in described deposit
On reservoir and the video watermark recognizer that can run on the processor, the video watermark recognizer is by the processing
The step of device realizes any one heretofore described video watermark recognition methods when executing.
According to another aspect of the invention, a kind of computer readable storage medium, the computer-readable storage are provided
It is stored with video watermark recognizer on medium, institute in the present invention is realized when the video watermark recognizer is executed by processor
The step of any one video watermark recognition methods stated.
Compared with prior art, the invention has the following advantages that
Video watermark identifying schemes provided in an embodiment of the present invention, according to each video image and sky in video to be identified
Domain watermark verification module determines the first sequence of values, generates second value sequence according to the corresponding time-domain value of each video image, from
The first subsequence is intercepted in second value sequence, and a and the first sub- sequence is intercepted from the first sequence of values according to sliding window cutting method
Isometric multiple second subsequences are arranged, are determined by the related coefficient of the first subsequence and each second subsequence whether embedding in video
Enter watermark, effectively two fusion airspace, transform domain dimension video watermarks generated can be identified.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various advantage and benefit are for ordinary skill people
Member will become clear.Attached drawing is only used for showing preferred embodiment, and is not to be construed as limiting the invention.And
In entire attached drawing, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is a kind of step flow chart of according to embodiments of the present invention one video watermark recognition methods；
Fig. 2 is a kind of step flow chart of according to embodiments of the present invention two video watermark recognition methods；
Fig. 3 is a kind of structural block diagram of according to embodiments of the present invention three video watermark identification device；
Fig. 4 is a kind of structural block diagram of according to embodiments of the present invention four terminal.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Embodiment one
Referring to Fig.1, a kind of step flow chart of video watermark recognition methods of the embodiment of the present invention one is shown.
The video watermark recognition methods of the embodiment of the present invention may comprise steps of:
Step 101: according to every frame video image in spatial domain watermark validation template and video to be identified, determining each frame respectively
The corresponding numerical value of video image generates the first sequence of values.
In the embodiment of the present invention, a video file includes multi-frame video image, is embedded in into video file logical when watermark
Watermark is embedded in certain section of frame video image in normal situation into video file, watermark is raw according to time domain watermark and airspace value
At.Therefore, in the embodiment of the present invention, the corresponding spatial domain watermark of each frame video image and time-domain value in video file need to be determined,
To judge whether be really embedded with watermark in video file as reference frame by determining spatial domain watermark and time-domain value.
It include multiple pixels, the corresponding pixel value of each pixel, each pixel value in spatial domain watermark validation template
A corresponding airspace value.
For example, spatial domain watermark template can take two-value (1 and 0 composition) image of any high-resolution (bitmap), have more
A cell corresponding with pixel in each frame video image in video to be identified, but in the bianry image 1 and 0 picture
Plain number is identical, that is, spatial domain watermark validation template is made of multiple pixels that pixel value is 1,0.Pixel value be 1 when then its
Corresponding airspace value can be set to 1, and when pixel value is 0, its corresponding airspace value can be set to -1.
Wherein, when the airspace value of a pixel in spatial domain watermark validation template be 1 when, instruction spatial domain watermark with figure
When as superposition, adjustment on the pixel brightness value of the pixel is increased into pixel brightness value, when in spatial domain watermark validation template
When the airspace value of one pixel is -1, indicates when with image superposition, by the pixel brightness value of the pixel to downward, that is, subtract
Small pixel brightness value.
Similar, it can also be using the spatial domain watermark validation template of opposite rule, for example, when in spatial domain watermark validation template
A pixel airspace value be -1 when, indicate when with image superposition, by the pixel brightness value of the pixel adjustment be
Increase pixel brightness value, when the airspace value of a pixel in spatial domain watermark validation template be 1 when, instruction with image superposition
When, by the pixel brightness value of the pixel to downward, that is, reduce pixel brightness value.
The corresponding spatial domain watermark of each frame video image can be determined by spatial domain watermark authentication module；For every frame video figure
Picture can determine the corresponding numerical value of the frame video image according to video image and spatial domain watermark.According to broadcasting for each video image
Sequence is put forward, the corresponding numerical value of each video image is ranked up and produces the first sequence of values.
Each video image correspond to first numerical value, therefore the quantity of the numerical value in the first sequence of values with it is to be identified
The frame number of video image is identical in video file.
Such as: video image A, B, C, D ... are sequentially arranged in video file to be identified, and video image A, B, C, D are corresponding
The first numerical value be respectively 1,2,3 and 4, then the first sequence of values generated be 1234 ....
Step 102: according to time domain watermark validation template, determining the corresponding time domain of every frame video image in video to be identified
Value generates second value sequence.
Time domain watermark validation template is the cosine curve of the first predeterminated frequency, is sampled according to the second predeterminated frequency, institute
The result sequence of generation.Wherein, the first predeterminated frequency, the second predeterminated frequency can be by those skilled in the art according to actual needs
It is configured, this is not particularly limited in the embodiment of the present invention.
For example, the cosine curve progress sample frequency that it is 3Hz to frequency that time domain watermark validation template, which can be, is 30Hz's
The result sequence of sampling.N is frame number F (n)=cos ((n/30) * 3), F (n)=> [- 1,1] ordered series of numbers.For each frame image,
Corresponding time-domain value is the number between -1 to 1.Wherein, 3HZ is the frequency of cosine curve, and 30HZ is using frequency.
Change for each frame video image in video file to be identified, according to time-domain value in time domain watermark validation template
Rule is changed, determines the corresponding time-domain value of video image；According to the playing sequence of each video image, when each video image is corresponding
Thresholding, which is ranked up, generates second value sequence.
It should be noted that step 102 is not limited to execute after step 101, step 102 can also be in step
It executes before 101 or is executed parallel with step 101.
Step 103: the second value sequence for intercepting preset length obtains the first subsequence.
Wherein, preset length can be configured according to actual needs by those skilled in the art, in the embodiment of the present invention
This is not specifically limited.Such as: 5 seconds video lengths, 10 seconds video lengths etc. can be set into.
Step 104: being sliding unit with single video frame, slide interception frame by frame since the first numerical value of the first sequence of values
With multiple second subsequences of the first subsequence equal length.
Specifically, when intercepting first the second subsequence from the first sequence of values, from the first numerical value of the first sequence of values
Start the subsequence of interception with the first subsequence equal length；When intercepting second the second subsequence from the first sequence of values, from
Second numerical value of the first sequence of values starts the subsequence of interception with the first subsequence equal length；And so on from the first numerical value
The third value of sequence, the 4th numerical value, the 5th numerical value ... intercept subsequence.
First subsequence and the second subsequence equal length, i.e. the numerical value sum for including in the first subsequence are equal to the second sub- sequence
The numerical value sum for including in column.
Step 105: determining the related coefficient of the first subsequence and each second subsequence respectively.
For calculating the specific calculation of the related coefficient of two subsequences, referring to the relevant technologies, the present invention is real
It applies in example and this is not specifically limited.
Step 106: determining in video file to be identified whether be embedded in watermark according to each related coefficient.
During specific implementation, each related coefficient being calculated can be compared with preset threshold respectively；If
Related coefficient is greater than preset threshold, it is determined that has been inserted into this section of video corresponding to corresponding second subsequence of the related coefficient
Watermark；If related coefficient is less than or equal to preset threshold, it is determined that should corresponding to corresponding second subsequence of the related coefficient
Watermark is not embedded into section video.
Video watermark recognition methods provided in an embodiment of the present invention, according to each video image and sky in video to be identified
Domain watermark verification module determines the first sequence of values, generates second value sequence according to the corresponding time-domain value of each video image, from
The first subsequence is intercepted in second value sequence, and a and the first sub- sequence is intercepted from the first sequence of values according to sliding window cutting method
Isometric multiple second subsequences are arranged, are determined by the related coefficient of the first subsequence and each second subsequence whether embedding in video
Enter watermark, effectively two fusion airspace, transform domain dimension video watermarks generated can be identified.
Embodiment two
Referring to Fig. 2, a kind of step flow chart of video watermark generation method of the embodiment of the present invention two is shown.
The video watermark generation method of the embodiment of the present invention can specifically include following steps:
Step 201: obtaining preset spatial domain watermark validation template.
Spatial domain watermark validation template can be the first preset value by pixel value, the pixel of the second preset value forms, each
Pixel corresponds to a pixel value, the corresponding airspace value of each pixel value, and each pixel value number phase in spatial domain watermark template
Deng to ensure spatial domain watermark template in local low frequency, in global high frequency.That is, arbitrarily one fritter spatial domain watermark of interception is tested
Template is demonstrate,proved, pixel value is identical in block, but sees that variation is more on the whole.
The first preset value, the quantity of the second preset value are identical in spatial domain watermark validation template, and the first preset value, second are preset
Value can be respectively 1,0.
Step 202: determining the resolution ratio of video image in video to be identified；By the resolution ratio tune of spatial domain watermark validation template
Whole is, generation video image corresponding spatial domain watermark big with the resolution ratio of video image etc..
Resolution ratio of each frame video image etc. is big in the same video file.Such as: the resolution ratio of video image is 50 pictures
Spatial domain watermark validation template resolution ratio is then also adjusted to 50 pixels multiplied by 50 pixels, airspace adjusted multiplied by 50 pixels by element
Watermark verification template is then the corresponding spatial domain watermark of video image.
Step 203: according to every frame video image in spatial domain watermark and video to be identified, determining each frame video image respectively
Corresponding numerical value generates the first sequence of values.
A kind of mode preferably generating the first sequence of values is as follows:
Firstly, for every frame video image in video to be identified, by the corresponding pixel value of pixel each in video image,
Airspace value corresponding with pixel each in spatial domain watermark is corresponding to be multiplied and sums, and obtains the first numerical value；
Such as: the resolution ratio of video image is 50 pixels multiplied by 50 pixels, then includes 2500 pixels in video image,
Each pixel corresponding pixel value in video image.Correspondingly, also include in spatial domain watermark corresponding with video image
2500 pixels i.e. 2500 units, the corresponding airspace value of each pixel.Determining corresponding first number of video image
When value, take video image, the corresponding pixel value of same pixel point and airspace value are multiplied in spatial domain watermark, then can be obtained 2500
Product value, by this 2500 product values summation, gained and value are then corresponding first numerical value of the video image.
Secondly, corresponding first numerical value of each frame video image is ranked up according to the playing sequence of each frame video image
Generate the first sequence of values.
Wherein, the first sequence of values can be indicated with P, and numerical value number included in P is indicated with i, each numerical value x in Pi
It indicates.If in video file to be identified including 5000 frame video images, the number of i is 5000 in P.
Step 204: according to time domain watermark validation template, determining the corresponding time domain of every frame video image in video to be identified
Value generates second value sequence.
A kind of mode preferably generating second value sequence is as follows:
Firstly, obtaining preset time domain watermark validation template；
Wherein, time domain watermark template is the cosine curve of the first predeterminated frequency, is sampled according to the second predeterminated frequency, institute
The result sequence of generation, as a result each value in sequence is then a time-domain value.For example, time domain watermark template can be to frequency
The result sequence for the sampling that sample frequency is 30Hz is carried out for the cosine curve of 3Hz.N is frame number F (n)=cos ((n/30) * 3),
F (n)=> [- 1,1] ordered series of numbers.For each frame image, the time-domain value of corresponding time domain watermark is the number between -1 to 1.Its
In, 3HZ is the frequency of cosine curve, and 30HZ is using frequency.
Secondly, the transformation rule according to time domain watermark validation template, determines every frame video image in video file to be identified
Corresponding time-domain value.
Finally, the corresponding time-domain value of each frame video image is ranked up life according to the playing sequence of each frame video image
At second value sequence.
Wherein, second value sequence can be indicated with T, and numerical value number included in T is indicated with i, each numerical value y in Ti
It indicates.If in video file to be identified including 5000 frame video images, the number of i is 5000 in T.Step 205: interception is default
The second value sequence of length obtains the first subsequence.
It specifically, can be from the initial value of the first sequence of values when intercepting the first subsequence from second value sequence
Start to intercept, can also be intercepted since the middle section of sequence.It, can be by art technology for the specific length intercepted
Personnel are configured according to actual needs.
It may include n numerical value, corresponding n frame video image in first subsequence of preset length.
Step 206: being sliding unit with single video frame, slide interception frame by frame since the first numerical value of the first sequence of values
With multiple second subsequences of the first subsequence equal length.
Video-frequency band interception is carried out from first frame video in the embodiment of the present invention to be judged, can recognize that in video to be identified
It is embedded in each video-frequency band of watermark.Wherein, the numerical value number for including in the first subsequence and the second subsequence is identical.
Such as: video total duration to be identified 3 minutes, wherein be not embedded into video watermark in preceding 1 minute video, regard for the 2nd minute
It is embedded with video watermark in frequency, is not embedded into watermark in the 3rd minute video.Video watermark identification side in through the embodiment of the present invention
Method, which can recognize that the 2nd minute, is embedded with video watermark in video.
Step 207: determining the related coefficient of the first subsequence and each second subsequence respectively.
It is a kind of preferably calculate the first subsequence, the mode of the second subsequence related coefficient is to be calculated by following formula
Related coefficient:
Wherein, rxyFor related coefficient, xiFor i-th of numerical value for including in the second subsequence, yiTo be wrapped in the first subsequence
Y-th of the numerical value contained, n are the integer number for including in the second subsequence.
Step 208: determining in video file to be identified whether be embedded in watermark according to each related coefficient.
A method of preferably determining in video file to be identified whether be embedded in watermark according to each related coefficient are as follows: respectively
Each related coefficient is compared with preset threshold；It is greater than the related coefficient of preset threshold if it exists, it is determined that video to be identified
Watermark is had been inserted into file；It is greater than the related coefficient of preset threshold if it does not exist, it is determined that be not embedded into video file to be identified
Watermark.
Video watermark recognition methods provided in an embodiment of the present invention, according to each video image and sky in video to be identified
Domain watermark verification module determines the first sequence of values, generates second value sequence according to the corresponding time-domain value of each video image, from
The first subsequence is intercepted in second value sequence, and a and the first sub- sequence is intercepted from the first sequence of values according to sliding window cutting method
Isometric multiple second subsequences are arranged, are determined by the related coefficient of the first subsequence and each second subsequence whether embedding in video
Enter watermark, effectively two fusion airspace, transform domain dimension video watermarks generated can be identified.
Embodiment three
Referring to Fig. 3, a kind of structural block diagram of video watermark identification device of the embodiment of the present invention three is shown.
The video watermark identification device of the embodiment of the present invention may include: First ray generation module 301, be configured as root
According to every frame video image in spatial domain watermark validation template and video to be identified, the corresponding number of each frame video image is determined respectively
Value generates the first sequence of values；Second sequence generating module 302, is configured as according to time domain watermark validation template, determine described in
The corresponding time-domain value of every frame video image in video to be identified, generates second value sequence；First interception module 303, is configured
The first subsequence is obtained to intercept the second value sequence of preset length；Second interception module 304, is configured as with single video frame
To slide unit, interception and the first subsequence equal length are slided frame by frame since the first numerical value of first sequence of values
Multiple second subsequences；Related coefficient determining module 305 is configured to determine first subsequence and each described the
The related coefficient of two subsequences；As a result determining module 306 are configured as determining the view to be identified according to each related coefficient
Whether watermark is embedded in frequency file.
Preferably, the First ray generation module 301 may include: the first acquisition submodule 3011, be configured as obtaining
Take preset spatial domain watermark validation template；Adjusting submodule 3012 is configured to determine that video image in the video to be identified
Resolution ratio；It is big, generation with the resolution ratio of the video image etc. by the resolution adjustment of the spatial domain watermark validation template
The corresponding spatial domain watermark of the video image；First generates submodule 3013, is configured as according to the spatial domain watermark and institute
Every frame video image in video to be identified is stated, determines the corresponding numerical value of each frame video image respectively, generates the first sequence of values.
Preferably, the first generation submodule 3013 may include: computing unit, be configured as described to be identified
Every frame video image in video, it is and each in the spatial domain watermark by the corresponding pixel value of pixel each in the video image
The corresponding airspace value of pixel is corresponding to be multiplied and sums, and obtains the first numerical value；Sequencing unit is configured as according to each frame video figure
Corresponding first numerical value of each frame video image is ranked up and generates the first sequence of values by the playing sequence of picture.
Preferably, second sequence generating module 302 may include: the second acquisition submodule 3021, be configured as obtaining
Take preset time domain watermark validation template；Time-domain value determines submodule 3022, is configured as according to time domain watermark validation template
Transformation rule determines the corresponding time-domain value of every frame video image in the video file to be identified；Second generates submodule 3023,
It is configured as the playing sequence according to each frame video image, the corresponding time-domain value of each frame video image is ranked up generation second
Sequence of values.
Preferably, the result determining module 306 may include: to compare submodule 3061, be configured to Jiang Gesuo
Related coefficient is stated to be compared with preset threshold；First determines submodule 3062, is configured as being greater than the default threshold if it exists
The related coefficient of value, it is determined that have been inserted into watermark in the video file to be identified；Second determines submodule 3063, is configured as
It is greater than the related coefficient of the preset threshold if it does not exist, it is determined that be not embedded into watermark in the video file to be identified.
Preferably, the spatial domain watermark validation template by pixel value be the first preset value, the second preset value pixel group
At；The time domain watermark validation template is the cosine curve of the first predeterminated frequency, is sampled, is given birth to according to the second predeterminated frequency
At result sequence.
The mobile terminal of the embodiment of the present invention is known for realizing video watermark corresponding in previous embodiment one, embodiment two
Other method, and there is beneficial effect corresponding with embodiment of the method, details are not described herein.
Example IV
Referring to Fig. 4, a kind of structural block diagram of terminal of video watermark for identification of the embodiment of the present invention four is shown.
The terminal of the embodiment of the present invention may include: memory, processor and storage on a memory and can be in processor
The video watermark recognizer of upper operation, video watermark recognizer are realized heretofore described any when being executed by processor
A kind of the step of video watermark recognition methods.
Fig. 4 is a kind of block diagram of video watermark identification terminal 600 shown according to an exemplary embodiment.For example, terminal
600 can be mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, and medical treatment is set
It is standby, body-building equipment, personal digital assistant etc..
Referring to Fig. 4, terminal 600 may include following one or more components: processing component 602, memory 604, power supply
Component 606, multimedia component 608, audio component 610, the interface 612 of input/output (I/O), sensor module 614, and
Communication component 616.
The integrated operation of the usual control device 600 of processing component 602, such as with display, telephone call, data communication, phase
Machine operation and record operate associated operation.Processing component 602 may include that one or more processors 620 refer to execute
It enables, to perform all or part of the steps of the methods described above.In addition, processing component 602 may include one or more modules, just
Interaction between processing component 602 and other assemblies.For example, processing component 602 may include multi-media module, it is more to facilitate
Interaction between media component 608 and processing component 602.
Memory 604 is configured as storing various types of data to support the operation in terminal 600.These data are shown
Example includes the instruction of any application or method for operating in terminal 600, contact data, and telephone book data disappears
Breath, picture, video etc..Memory 604 can be by any kind of volatibility or non-volatile memory device or their group
It closes and realizes, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM) is erasable to compile
Journey read-only memory (EPROM), programmable read only memory (PROM), read-only memory (ROM), magnetic memory, flash
Device, disk or CD.
Power supply module 606 provides electric power for the various assemblies of terminal 600.Power supply module 606 may include power management system
System, one or more power supplys and other with for terminal 600 generate, manage, and distribute the associated component of electric power.
Multimedia component 608 includes the screen of one output interface of offer between the terminal 600 and user.One
In a little embodiments, screen may include liquid crystal display (LCD) and touch panel (TP).If screen includes touch panel, screen
Curtain may be implemented as touch screen, to receive input signal from the user.Touch panel includes one or more touch sensings
Device is to sense the gesture on touch, slide, and touch panel.The touch sensor can not only sense touch or sliding action
Boundary, but also detect duration and pressure associated with the touch or slide operation.In some embodiments, more matchmakers
Body component 608 includes a front camera and/or rear camera.When terminal 600 is in operation mode, such as screening-mode or
When video mode, front camera and/or rear camera can receive external multi-medium data.Each front camera and
Rear camera can be a fixed optical lens system or have focusing and optical zoom capabilities.
Audio component 610 is configured as output and/or input audio signal.For example, audio component 610 includes a Mike
Wind (MIC), when terminal 600 is in operation mode, when such as call mode, recording mode, and voice recognition mode, microphone is matched
It is set to reception external audio signal.The received audio signal can be further stored in memory 604 or via communication set
Part 616 is sent.In some embodiments, audio component 810 further includes a loudspeaker, is used for output audio signal.
I/O interface 612 provides interface between processing component 602 and peripheral interface module, and above-mentioned peripheral interface module can
To be keyboard, click wheel, button etc..These buttons may include, but are not limited to: home button, volume button, start button and lock
Determine button.
Sensor module 614 includes one or more sensors, and the state for providing various aspects for terminal 600 is commented
Estimate.For example, sensor module 614 can detecte the state that opens/closes of terminal 600, and the relative positioning of component, for example, it is described
Component is the display and keypad of terminal 600, and sensor module 614 can also detect 600 1 components of terminal 600 or terminal
Position change, the existence or non-existence that user contacts with terminal 600,600 orientation of device or acceleration/deceleration and terminal 600
Temperature change.Sensor module 614 may include proximity sensor, be configured to detect without any physical contact
Presence of nearby objects.Sensor module 614 can also include optical sensor, such as CMOS or ccd image sensor, at
As being used in application.In some embodiments, which can also include acceleration transducer, gyro sensors
Device, Magnetic Sensor, pressure sensor or temperature sensor.
Communication component 616 is configured to facilitate the communication of wired or wireless way between terminal 600 and other equipment.Terminal
600 can access the wireless network based on communication standard, such as WiFi, 2G or 3G or their combination.In an exemplary implementation
In example, communication component 616 receives broadcast singal or broadcast related information from external broadcasting management system via broadcast channel.
In one exemplary embodiment, the communication component 616 further includes near-field communication (NFC) module, to promote short range communication.Example
Such as, NFC module can be based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra wide band (UWB) technology,
Bluetooth (BT) technology and other technologies are realized.
In the exemplary embodiment, terminal 600 can be believed by one or more application specific integrated circuit (ASIC), number
Number processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array
(FPGA), controller, microcontroller, microprocessor or other electronic components are realized, for executing video watermark recognition methods, are had
Body video watermark recognition methods include:
According to every frame video image in spatial domain watermark validation template and video to be identified, each frame video image is determined respectively
Corresponding numerical value generates the first sequence of values；According to time domain watermark validation template, every frame video in the video to be identified is determined
The corresponding time-domain value of image generates second value sequence；The second value sequence of interception preset length obtains the first subsequence；With
Single video frame is sliding unit, slides interception and the described first sub- sequence frame by frame since the first numerical value of first sequence of values
Multiple second subsequences of column equal length；The related coefficient of first subsequence Yu each second subsequence is determined respectively；
Determine in the video file to be identified whether be embedded in watermark according to each related coefficient.
Preferably, described according to every frame video image in spatial domain watermark validation template and video to be identified, it determines respectively
The corresponding numerical value of each frame video image, the step of generating the first sequence of values, comprising: obtain preset spatial domain watermark verifying mould
Plate；Determine the resolution ratio of video image in the video to be identified；Resolution adjustment by the spatial domain watermark validation template is
It is big with the resolution ratio of the video image etc., generate the corresponding spatial domain watermark of the video image；According to the spatial domain watermark with
And every frame video image in the video to be identified, the corresponding numerical value of each frame video image is determined respectively, generates the first numerical value sequence
Column.
Preferably, described according to every frame video image in the spatial domain watermark and the video to be identified, it determines respectively
The corresponding numerical value of each frame video image, the step of generating the first sequence of values, comprising: for every frame in the video to be identified
Video image, it is corresponding with each pixel in the spatial domain watermark by the corresponding pixel value of pixel each in the video image
Airspace value is corresponding to be multiplied and sums, and obtains the first numerical value；According to the playing sequence of each frame video image, by each frame video image pair
The first numerical value answered, which is ranked up, generates the first sequence of values.
Preferably, described according to time domain watermark validation template, when determining that every frame video image is corresponding in video to be identified
The step of thresholding, generation second value sequence, comprising: obtain preset time domain watermark validation template；It is verified according to time domain watermark
The transformation rule of template determines the corresponding time-domain value of every frame video image in the video file to be identified；According to each frame video
The corresponding time-domain value of each frame video image is ranked up and generates second value sequence by the playing sequence of image.
Preferably, described that the step that watermark whether is embedded in the video file to be identified is determined according to each related coefficient
Suddenly, comprising: each related coefficient is compared with preset threshold respectively；It is greater than the phase relation of the preset threshold if it exists
Number, it is determined that have been inserted into watermark in the video file to be identified；It is greater than the related coefficient of the preset threshold if it does not exist, then
It determines in the video file to be identified and is not embedded into watermark.
Preferably, the spatial domain watermark validation template by pixel value be the first preset value, the second preset value pixel group
At；The time domain watermark validation template is the cosine curve of the first predeterminated frequency, is sampled, is given birth to according to the second predeterminated frequency
At result sequence.
In the exemplary embodiment, a kind of non-transitorycomputer readable storage medium including instruction, example are additionally provided
It such as include the memory 604 of instruction, above-metioned instruction can be executed by the processor 620 of terminal 600 to complete above-mentioned video watermark and know
Other method.For example, the non-transitorycomputer readable storage medium can be ROM, random access memory (RAM), CD-
ROM, tape, floppy disk and optical data storage devices etc..When the instruction in storage medium is executed by the processor of terminal, so that eventually
The step of end is able to carry out any one heretofore described video watermark recognition methods.
Terminal provided in an embodiment of the present invention is according to each video image and spatial domain watermark verifying mould in video to be identified
Block determines the first sequence of values, second value sequence is generated according to the corresponding time-domain value of each video image, from second value sequence
The first subsequence of middle interception intercept from the first sequence of values a isometric with the first subsequence multiple according to sliding window cutting method
Second subsequence determines in video whether be embedded in watermark by the related coefficient of the first subsequence and each second subsequence, can have
Effect identifies two fusion airspace, transform domain dimension video watermarks generated.
For device embodiment, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
Video watermark identifying schemes are not intrinsic with any certain computer, virtual system or other equipment provided herein
It is related.Various general-purpose systems can also be used together with teachings based herein.As described above, construction has the present invention
Structure required by the system of scheme is obvious.In addition, the present invention is also not directed to any particular programming language.It should be bright
It is white, it can use various programming languages and realize summary of the invention described herein, and retouched above to what language-specific was done
State is in order to disclose the best mode of carrying out the invention.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of the various inventive aspects,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention: i.e. required to protect
Shield the present invention claims features more more than feature expressly recited in each claim.More precisely, such as right
As claim reflects, inventive aspect is all features less than single embodiment disclosed above.Therefore, it then follows tool
Thus claims of body embodiment are expressly incorporated in the specific embodiment, wherein each claim conduct itself
Separate embodiments of the invention.
Those skilled in the art will understand that can be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more devices different from this embodiment.It can be the module or list in embodiment
Member or component are combined into a module or unit or component, and furthermore they can be divided into multiple submodule or subelement or
Sub-component.Other than such feature and/or at least some of process or unit exclude each other, it can use any
Combination is to all features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so disclosed
All process or units of what method or apparatus are combined.Unless expressly stated otherwise, this specification is (including adjoint power
Benefit require, abstract and attached drawing) disclosed in each feature can carry out generation with an alternative feature that provides the same, equivalent, or similar purpose
It replaces.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention
Within the scope of and form different embodiments.For example, in detail in the claims, embodiment claimed it is one of any
Can in any combination mode come using.
Various component embodiments of the invention can be implemented in hardware, or to run on one or more processors
Software module realize, or be implemented in a combination thereof.It will be understood by those of skill in the art that can be used in practice
Microprocessor or digital signal processor (DSP) realize one in video watermark identifying schemes according to an embodiment of the present invention
The some or all functions of a little or whole components.The present invention is also implemented as executing method as described herein
Some or all device or device programs (for example, computer program and computer program product).Such realization
Program of the invention can store on a computer-readable medium, or may be in the form of one or more signals.This
The signal of sample can be downloaded from an internet website to obtain, and is perhaps provided on the carrier signal or mentions in any other forms
For.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability
Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element or step listed in the claims.Word "a" or "an" located in front of the element does not exclude the presence of multiple such
Element.The present invention can be by means of including the hardware of several different elements and being come by means of properly programmed computer real
It is existing.In the unit claims listing several devices, several in these devices can be through the same hardware branch
To embody.The use of word first, second, and third does not indicate any sequence.These words can be explained and be run after fame
Claim.
Claims (10)
1. a kind of video watermark recognition methods, which is characterized in that the described method includes:
According to every frame video image in spatial domain watermark validation template and video to be identified, determine that each frame video image is corresponding respectively
Numerical value, generate the first sequence of values；
According to time domain watermark validation template, the corresponding time-domain value of every frame video image in the video to be identified is determined, generate the
Two sequence of values；
The second value sequence of interception preset length obtains the first subsequence；
It is sliding unit with single video frame, slides interception and described the frame by frame since the first numerical value of first sequence of values
Multiple second subsequences of one subsequence equal length；
The related coefficient of first subsequence Yu each second subsequence is determined respectively；
Determine in the video to be identified whether be embedded in watermark according to each related coefficient.
2. the method according to claim 1, wherein described according to spatial domain watermark validation template and view to be identified
The step of every frame video image in frequency determines the corresponding numerical value of each frame video image respectively, generates the first sequence of values, comprising:
Obtain preset spatial domain watermark validation template；
Determine the resolution ratio of video image in the video to be identified；Resolution adjustment by the spatial domain watermark validation template is
It is big with the resolution ratio of the video image etc., generate the corresponding spatial domain watermark of the video image；
According to every frame video image in the spatial domain watermark and the video to be identified, determine that each frame video image is corresponding respectively
Numerical value, generate the first sequence of values.
3. according to the method described in claim 2, it is characterized in that, described according to the spatial domain watermark and the view to be identified
The step of every frame video image in frequency determines the corresponding numerical value of each frame video image respectively, generates the first sequence of values, comprising:
For every frame video image in the video to be identified, by the corresponding pixel value of pixel each in the video image,
Airspace value corresponding with pixel each in the spatial domain watermark is corresponding to be multiplied and sums, and obtains the first numerical value；
According to the playing sequence of each frame video image, corresponding first numerical value of each frame video image is ranked up the first number of generation
Value sequence.
4. determining to be identified the method according to claim 1, wherein described according to time domain watermark validation template
The corresponding time-domain value of every frame video image in video, the step of generating second value sequence, comprising:
Obtain preset time domain watermark validation template；
According to the transformation rule of time domain watermark validation template, the corresponding time domain of every frame video image in the video to be identified is determined
Value；
According to the playing sequence of each frame video image, the corresponding time-domain value of each frame video image is ranked up generation second value
Sequence.
5. the method according to claim 1, wherein it is described determined according to each related coefficient it is described to be identified
The step of whether being embedded in watermark in video, comprising:
Each related coefficient is compared with preset threshold respectively；
It is greater than the related coefficient of the preset threshold if it exists, it is determined that have been inserted into watermark in the video to be identified；
It is greater than the related coefficient of the preset threshold if it does not exist, it is determined that be not embedded into watermark in the video to be identified.
6. according to the method described in claim 1, it is characterized by:
The spatial domain watermark validation template by pixel value be the first preset value, the second preset value pixel form；The time domain
Watermark verification template is the cosine curve of the first predeterminated frequency, is sampled according to the second predeterminated frequency, result sequence generated
Column.
7. a kind of video watermark identification device, which is characterized in that described device includes:
First ray generation module is configured as according to frame video figure every in spatial domain watermark validation template and video to be identified
Picture determines the corresponding numerical value of each frame video image respectively, generates the first sequence of values；
Second sequence generating module is configured as determining every frame view in the video to be identified according to time domain watermark validation template
The corresponding time-domain value of frequency image generates second value sequence；
First interception module, the second value sequence for being configured as interception preset length obtain the first subsequence；
Second interception module is configured as opening for sliding unit from the first numerical value of first sequence of values with single video frame
Begin multiple second subsequences for sliding interception with the first subsequence equal length frame by frame；
Related coefficient determining module is configured to determine the phase relation of first subsequence Yu each second subsequence
Number；
As a result determining module is configured as determining in the video to be identified whether be embedded in watermark according to each related coefficient.
8. device according to claim 7, which is characterized in that the First ray generation module includes:
First acquisition submodule is configured as obtaining preset spatial domain watermark validation template；
Adjusting submodule is configured to determine that the resolution ratio of video image in the video to be identified；The spatial domain watermark is tested
Demonstrate,prove the resolution adjustment of template be it is big with the resolution ratio of the video image etc., generate the corresponding airspace water of the video image
Print；
First generates submodule, is configured as according to every frame video image in the spatial domain watermark and the video to be identified,
The corresponding numerical value of each frame video image is determined respectively, generates the first sequence of values.
9. a kind of terminal characterized by comprising memory, processor and be stored on the memory and can be at the place
The video watermark recognizer run on reason device, realizes such as right when the video watermark recognizer is executed by the processor
It is required that described in any one of 1 to 6 the step of video watermark recognition methods.
10. a kind of computer readable storage medium, which is characterized in that be stored with video water on the computer readable storage medium
Recognizer is printed, is realized when the video watermark recognizer is executed by processor as described in any one of claims 1 to 6
The step of video watermark recognition methods.
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| CN109598231B (en) * | 2018-12-03 | 2021-03-02 | 广州市百果园信息技术有限公司 | Video watermark identification method, device, equipment and storage medium |
| CN110827189B (en) * | 2019-11-01 | 2023-12-05 | 山东浪潮科学研究院有限公司 | Watermark removing method and system for digital image or video |
| CN111263242B (en) * | 2020-02-12 | 2021-03-19 | 山东三宏信息科技有限公司 | Frame sequence processing method, system and storage medium |
| CN111340677B (en) * | 2020-02-27 | 2023-10-27 | 北京百度网讯科技有限公司 | Video watermark detection method, apparatus, electronic device, and computer readable medium |
| CN113395583B (en) * | 2020-09-29 | 2023-06-27 | 腾讯科技（深圳）有限公司 | Watermark detection method, watermark detection device, computer equipment and storage medium |
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