CN107547556A - A kind of robust video watermark insertion and extracting method, equipment and its storage device - Google Patents
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- CN107547556A CN107547556A CN201710814401.4A CN201710814401A CN107547556A CN 107547556 A CN107547556 A CN 107547556A CN 201710814401 A CN201710814401 A CN 201710814401A CN 107547556 A CN107547556 A CN 107547556A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000003780 insertion Methods 0.000 title claims abstract description 34
- 230000037431 insertion Effects 0.000 title claims abstract description 34
- 238000000605 extraction Methods 0.000 claims abstract description 15
- 238000012216 screening Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention provides a kind of insertion of robust video watermark and extracting method, equipment and its storage device, methods described to include step：Binary watermarking is read in adjustment；Storing pixel values；Expand pixel value and insert and start over flag bit；Obtain the frame of video and set the threshold value of pixel access average；Screening pixel access average meets the frame of threshold value as embedded object；Obtain the left side edge pixel abscissa value T of frame for meeting threshold value；The frame of video for embedding a watermark into acquisition obtains the video containing watermark；Parse the video acquisition frame of video containing watermark；Obtain the leftmost side edge pixels abscissa value T of frame of video；Detect the watermark symbol sequence in T row；Watermark is extracted by pixel access average.A kind of robust video watermark insertion and extraction equipment and storage device, for realizing a kind of robust video watermark insertion and extracting method.The present invention improves the robustness of watermark and the real-time of embedded extraction.
Description
Technical field
The present invention relates to computer vision field, and in particular to a kind of robust video watermark insertion and extracting method, equipment
And its storage device.
Background technology
Digital multimedia instead of traditional analog form, and the continuous development of network service, digital multimedia can be square
Just copy propagation, piracy and the copyright problem of getting worse have thus been triggered.Generally, digital watermarking can be used as a kind of protection
The important means of copyright.But carrier of the video as watermark, it can make during the coding and decoding repeated, compression storage
Watermark information is obtained to lose.Meanwhile watermark insertion in video and extraction requirement possess real-time, can so facilitate watermark embedding
Enter and extract.Therefore, the robustness and real-time for how improving watermark just turn into urgent problem to be solved.
The content of the invention
In order to solve the above problems, the invention provides a kind of robust video watermark is embedded and extracting method, equipment and its
Storage device, by the way that the leftmost side edge of video will be embedded in after watermark progress binary-coding by ad hoc rules, watermark reality is reached
When embedded and extraction requirement, the robustness of watermark is improved, so as to effectively solve the above problems.
Technical scheme provided by the invention is：A kind of robust video watermark is embedded and extracting method, methods described include step
Suddenly：Binary watermarking is read in adjustment；Storing pixel values；Expand pixel value and insert and start over flag bit；Obtain the frame of video simultaneously
Set the threshold value of pixel access average；Screening pixel access average meets the frame of threshold value as embedded object；Acquisition meets threshold value
Frame left side edge pixel abscissa value T；The frame of video for embedding a watermark into acquisition obtains the video containing watermark；Parsing contains watermark
Video acquisition frame of video；Obtain the leftmost side edge pixels abscissa value T of frame of video；Detect the watermark symbol sequence in T row
Row；Watermark is extracted by pixel access average..A kind of storage device, the storage device store instruction and data are used to realize institute
State a kind of robust video watermark insertion and extracting method.A kind of robust video watermark is embedded and extraction equipment, the equipment include
Processor and the storage device；The processor load and perform the instruction in the storage device and data be used for realize institute
A kind of robust video watermark insertion stated and extracting method.
The beneficial effects of the invention are as follows：The invention provides a kind of robust video watermark is embedded and extracting method, equipment and
Its storage device, by the way that the leftmost side edge of video will be embedded in after watermark progress binary-coding by ad hoc rules, reaches support and regard
Frequency Streaming Media Real-time embedding and extraction (inverse embedded).Simultaneously as embedding method has used pair of video pixel and watermark pixel
Etc. rule, protective capacities of the watermark to attacks such as compression and reproduction (including but is not limited to) can be effectively improved.That is, water is improved
The robustness of print.
Brief description of the drawings
Fig. 1 is the overall flow figure of the insertion of robust video watermark and extracting method in the embodiment of the present invention；
Fig. 2 is the enlarged drawing of the frame after the embedded watermark of the present invention；
Fig. 3 is that frame of video left side edge detects schematic diagram before watermark is embedded in the embodiment of the present invention；
Fig. 4 is the frame of video left side edge detects schematic diagram after embedded watermark in the embodiment of the present invention；
Fig. 5 is the video comparison diagram that watermark insertion is front and rear in the embodiment of the present invention；
Fig. 6 is the hardware device operating diagram of the embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is further described, the particular technique details hereinafter mentioned, such as：Method, equipment etc., are only better understood from reader
Technical scheme, does not represent that present invention is limited only by following ins and outs.
The embodiment provides a kind of robust video watermark is embedded and extracting method, equipment and its storage device,
Passing through will.Referring to Fig. 1, Fig. 1 is the overall flow figure of the insertion of robust video watermark and extracting method in the embodiment of the present invention, institute
State method and realize that specific steps include by a kind of insertion of robust video watermark and extraction equipment：
S101：Binary watermarking (can be BMP format-patterns) is read in adjustment.
S102：Storing pixel values；With array W [k] storing pixel values；Number of pixels M=XY, X are the length of watermark, and Y is
The width of watermark.
S103：Expand pixel value and insert and start over flag bit；The rule expanded the W [k] be W [0]=
0, W [1]=1, W [2]=0, W [3]=1 ..., W [k+4]=W [k] ..., W [M+4]=0, W [M+5]=1, W [M+6]=0, W
[M+7]=0, the expansion insert flag bit.
S104：Obtain the frame of video and set the threshold value of pixel access average；For more preferable invisibility, color is chosen
Informative frame.Pixel access includes red pixel passage PR, green pixel passage PGAnd blue pixel passage PB；The picture
The threshold value of plain passage average is (50,200)；Wherein,M, N
For the length and width of a two field picture, P (x, y) is the pixel value of coordinate (x, y).
S105：Screening pixel access average meets the frame of threshold value as embedded object.
S106：Obtain the left side edge pixel abscissa value T of frame for meeting threshold value；Using sobel operators to video longitudinal direction
It is T that edge, which is detected to obtain pixel abscissa minimum value,；The rim detection uses matrixTo regarding
Frequency frame carries out convolution.
S107：The frame of video for embedding a watermark into acquisition obtains the video containing watermark；The insertion of watermark is carried out by following formula
Wherein, P (T, y) represents frame of video T row, and the rgb pixel value of y rows, 0 represents black, and 1 represents white.
S108：Parse the video acquisition frame of video containing watermark.
S109：Obtain the leftmost side edge pixels abscissa value T of frame of video.
S110：Detect the watermark symbol sequence in T row.
S111：Watermark is extracted by pixel access average；By following formula reduction W [k]
Wherein, PB(T, k) is the average of coordinate (T, k) point pixel blueness (passivation degree is high) passage.Then, mark is removed
Position, obtain the W [k] of raw water print, onestep extraction watermark of going forward side by side.
Referring to Fig. 2, Fig. 2 is the enlarged drawing of the frame after the embedded watermark of the present invention, wherein：201 represent 0 (black), and 202 represent
1 (white).
Referring to Fig. 3, Fig. 3 is that frame of video left side edge detects schematic diagram before watermark is embedded in the embodiment of the present invention, wherein：
The leftmost side edge that 301 expressions detect, the edge for the other positions that 302 expressions detect.
Referring to Fig. 4, Fig. 4 is the frame of video left side edge detects schematic diagram after embedded watermark in the embodiment of the present invention, wherein：
401 represent the leftmost side edge that detects, and white line part is other edges detected in figure.
Referring to Fig. 5, Fig. 5 is the video comparison diagram that watermark insertion is front and rear in the embodiment of the present invention, wherein：501 represent insertion
Video before watermark, 502 represent the video after embedded watermark.It is it can be seen that not any to video pictures after embedded watermark
Influence.
Referring to Fig. 6, Fig. 6 is the hardware device operating diagram of the embodiment of the present invention, and the hardware device specifically includes：One
The insertion of kind robust video watermark and extraction equipment 601, processor 602 and storage device 603.
The insertion of robust video watermark and extraction equipment 601：A kind of robust video watermark is embedded and extraction equipment 601 is real
A kind of existing robust video watermark insertion and extracting method.
Processor 602：The processor 602 load and perform the instruction in the storage device 603 and data be used for it is real
A kind of existing described robust video watermark insertion and extracting method.
Storage device 603：The store instruction of storage device 603 and data；The storage device 603 is described for realizing
A kind of robust video watermark is embedded and extracting method.
By performing embodiments of the invention, all technical characteristics in the claims in the present invention are obtained for detailed explain
State.
Prior art is different from, the embodiment provides a kind of insertion of robust video watermark and extracting method, is set
Standby and its storage device, by the way that the leftmost side edge of video will be embedded in after watermark progress binary-coding by ad hoc rules, reach branch
Hold video stream media Real-time embedding and extraction (inverse embedded).Simultaneously as embedding method has used video pixel and watermark pixel
Equity rule, protective capacities of the watermark to compression and the attack such as reproduction (including but is not limited to) can be effectively improved.That is, improve
The robustness of watermark.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
1. a kind of robust video watermark insertion and extracting method, methods described is by a kind of insertion of robust video watermark and extraction equipment
Realize, it is characterised in that：Comprise the following steps：Binary watermarking is read in adjustment；Storing pixel values；Expand pixel value and insert and start
End mark position；Obtain the frame of video and set the threshold value of pixel access average；Screening pixel access average meets the frame of threshold value
As embedded object；Obtain the left side edge pixel abscissa value T for the frame for meeting threshold value；The frame of video for embedding a watermark into acquisition obtains
To the video containing watermark；Parse the video acquisition frame of video containing watermark；Obtain the leftmost side edge pixels abscissa value of frame of video
T；Detect the watermark symbol sequence in T row；Watermark is extracted by pixel access average.
2. a kind of robust video watermark insertion as claimed in claim 1 and extracting method, it is characterised in that：The storage pixel
Value is specially：With array W [k] storing pixel values；Number of pixels M=XY, X are the length of watermark, and Y is the width of watermark.
3. a kind of robust video watermark insertion as claimed in claim 2 and extracting method, it is characterised in that：The W [k] is entered
The rule that row expands is W [0]=0, W [1]=1, W [2]=0, W [3]=1 ..., W [k+4]=W [k] ..., W [M+4]=0, W
[M+5]=1, W [M+6]=0, W [M+7]=0；The expansion inserts flag bit.
4. a kind of robust video watermark insertion as claimed in claim 1 and extracting method, it is characterised in that：The setting picture
The threshold value of plain passage average specifically includes：Pixel access includes red pixel passage PR, green pixel passage PGAnd blue pixel
Passage PB；The threshold value of the pixel access average is (50,200)；Wherein,M, N are
The length and width of one two field picture, P (x, y) are the pixel value of coordinate (x, y).
5. a kind of robust video watermark insertion as claimed in claim 1 and extracting method, it is characterised in that：It is described to be met
The left side edge pixel abscissa value T of the frame of threshold value is specifically included：Video longitudinal edge detect using sobel operators
It is T to pixel abscissa minimum value.
6. a kind of robust video watermark insertion as claimed in claim 5 and extracting method, it is characterised in that：The rim detection
Use matrixConvolution is carried out to frame of video.
7. a kind of robust video watermark insertion as claimed in claim 1 and extracting method, it is characterised in that：It is described that watermark is embedding
The frame of video for entering acquisition obtains the video containing watermark and specifically included：The insertion of watermark is carried out by following formula
<mrow>
<mi>P</mi>
<mrow>
<mo>(</mo>
<mi>T</mi>
<mo>,</mo>
<mi>y</mi>
<mo>)</mo>
</mrow>
<mo>=</mo>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<mo>(</mo>
<mn>255</mn>
<mo>,</mo>
<mn>255</mn>
<mo>,</mo>
<mn>255</mn>
<mo>)</mo>
<mo>,</mo>
</mrow>
</mtd>
<mtd>
<mrow>
<mi>W</mi>
<mo>&lsqb;</mo>
<mi>k</mi>
<mo>&rsqb;</mo>
<mo>=</mo>
<mn>1</mn>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mo>(</mo>
<mn>0</mn>
<mo>,</mo>
<mn>0</mn>
<mo>,</mo>
<mn>0</mn>
<mo>)</mo>
<mo>,</mo>
</mrow>
</mtd>
<mtd>
<mrow>
<mi>W</mi>
<mo>&lsqb;</mo>
<mi>k</mi>
<mo>&rsqb;</mo>
<mo>=</mo>
<mn>0</mn>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
</mrow>
Wherein, P (T, y) represents frame of video T row, and the rgb pixel value of y rows, 0 represents black, and 1 represents white.
8. a kind of robust video watermark insertion as claimed in claim 1 and extracting method, it is characterised in that：It is described to lead to by pixel
Road average extraction watermark specifically includes：By following formula reduction W [k]
<mrow>
<mi>W</mi>
<mo>&lsqb;</mo>
<mi>k</mi>
<mo>&rsqb;</mo>
<mo>=</mo>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<mn>1</mn>
<mo>,</mo>
</mrow>
</mtd>
<mtd>
<mrow>
<mn>200</mn>
<mo><</mo>
<msub>
<mi>P</mi>
<mi>B</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>T</mi>
<mo>,</mo>
<mi>k</mi>
<mo>)</mo>
</mrow>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mn>0</mn>
<mo>,</mo>
</mrow>
</mtd>
<mtd>
<mrow>
<msub>
<mi>P</mi>
<mi>B</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>T</mi>
<mo>,</mo>
<mi>k</mi>
<mo>)</mo>
</mrow>
<mo><</mo>
<mn>50</mn>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
</mrow>
Wherein, PB(T, k) is the average of coordinate (T, k) point pixel blue channel.
9. a kind of storage device, its feature includes：The storage device store instruction and data are used to realize claim 1~8
A kind of described robust video watermark insertion and extracting method.
10. a kind of robust video watermark insertion and extraction equipment, it is characterised in that：Including：Processor and the storage device；Institute
Processor is stated to load and perform the instruction in the storage device and data are used to realize a kind of Shandong described in claim 1~8
The insertion of rod video watermark and extracting method.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110620961A (en) * | 2019-08-09 | 2019-12-27 | 上海紫竹数字创意港有限公司 | Video watermark adding method and device and video editing terminal |
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