CN107911754A - A kind of strong robust video TXT Text Watermarkings insertion and extracting method - Google Patents
A kind of strong robust video TXT Text Watermarkings insertion and extracting method Download PDFInfo
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- CN107911754A CN107911754A CN201711228699.7A CN201711228699A CN107911754A CN 107911754 A CN107911754 A CN 107911754A CN 201711228699 A CN201711228699 A CN 201711228699A CN 107911754 A CN107911754 A CN 107911754A
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/46—Embedding additional information in the video signal during the compression process
- H04N19/467—Embedding additional information in the video signal during the compression process characterised by the embedded information being invisible, e.g. watermarking
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- Computer Security & Cryptography (AREA)
- Editing Of Facsimile Originals (AREA)
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Abstract
A kind of strong robust video TXT Text Watermarkings insertion and extracting method, including two parts of video watermark insertion and extraction, watermark is TXT texts, and telescopiny modification length exceedes the image border of particular value, watermark information is stored with the V (lightness 0 100) in hsv color space；For the video of embedded watermark after reproduction, conventional video watermark cannot extract complete video watermark after the attack such as resolution changing, multiplexed format conversion, frame per second change caused by reproduction.Invention enhances the robustness of video watermark, and complete clearly watermark still can be extracted after above-mentioned attack.
Description
Technical field
The present invention relates to a kind of strong robust video TXT Text Watermarkings insertion and extracting method technical field.
Background technology
Digital multimedia instead of traditional analog form, and the continuous development of network service, digital multimedia can be square
Just copy propagation, has thus triggered piracy and the copyright problem of getting worse.Movie theatre plays video after by beholder's pirates shoot,
All there occurs great changes for the resolution ratio of video, frame per second, video format.Conventional video watermark can resist part attack, still
After the multiple attack in reproduction process is subject to, watermark information will be lost, it is impossible to play and call to account, position the mesh of pirates shoot person
's.Another watermarking project is directly embedded into a visible logo and is superimposed upon on video, plays copyright protection to a certain extent
Effect, still, be directly embedded into the viewing experience that visible watermark have impact on user, and due to watermark information as it can be seen that attacker
Directly original watermark picture can be covered with another watermark picture.
Disclosed patent《A kind of anti-geometry attack robust video watermark process based on time shaft spread spectrum》In, utilize video
The different pseudo-random informations preserved needed for embedded and extraction watermark between three layers of DWT conversion coefficients of frame different colours component,
This method is only capable of to resist geometric attacks, and recodification common in attacking reality is attacked, without preferable repellence.
The content of the invention
The purpose of the present invention is to overcome the problems of the above-mentioned prior art and provide one kind and can resist to rearrange
The ADAPTIVE ROBUST video watermark insertion of code attack and extracting method.The video of embedded watermark is after reproduction, conventional video water
Complete video water cannot be extracted after the attack such as resolution changing, multiplexed format conversion, frame per second change caused by reproduction by being imprinted on
Print.Invention enhances the robustness of video watermark, and complete clearly watermark still can be extracted after above-mentioned attack.
The present invention is realized by giving technical solution.
A kind of strong robust video TXT Text Watermarkings insertion and extracting method, including video watermark is embedded and extracts two portions
Point, watermark is TXT texts, and telescopiny modification length exceedes the image border of particular value, with the V (lightness in hsv color space
0-100) store watermark information；
Telescopiny is：
(1.1) two-value TXT watermark texts are read with binary system, watermark data, watermark length is stored with one-dimension array T [k]
For k；
(1.2) T [k] is expanded in segmentation as the following formula, and sequence number I, maximum storage quantity 16KB, 2* are initially inserted into every section of watermark
10*128bit；
(1.3) watermark segmentation SiFor i-th section of watermark；Total hop count is N；N=k/128+1；I is added after switching to ten binary systems
To before 128 watermark sections；Form new watermark section S 'i；It is 138 per segment length；
(1.4) parse video flowing and obtain video frame, telescopiny is more than the edge line of 138 pixels just for length
(edge analysis result as shown in figure 3, length meet as shown in Figure 4), it is embedding without watermark for the too short frame of edge line
Enter；Telescopiny is sequentially embedded from small to large according to line segment starting point abscissa；The watermark section S ' of each frame video insertioni's
Number m, m are the satisfactory number of length in a frame video；Repeat embedded S 'i；
(1.5) video frame is read, carries out watermark insertion as the following formula；
(x, y) is the coordinate of t-th of pixel on line segment, and wherein V (x, y), represents video frame xth row, the pixel of y rows
The V component of HSV；
(1.6) amended video frame is preserved to former video；
Extraction process is：
(2.1) straight line in Hough transformation detection video frame, straight length threshold value are arranged to 138, obtain containing watermark
Pixel fragment；
(2.2) read video frame, detect top ten sequence number, arrive sequence number i；
Detect flag sequence, reduce W [k] as the following formula
S′i[t] is extraction watermark section, and V (x, y) is the value of the v components of coordinate (x, y) point pixel；(x, y) is t-th of picture
The coordinate of vegetarian refreshments；9<t<138；
(2.3) the corresponding watermark section S ' of all different sequence number i are obtainedi[t], removes top ten and is connected afterwards by i sizes, also
Raw water print T [k]；
(2.4) TXT watermark texts are reduced.
Brief description of the drawings
Fig. 1 is S ' of the present inventioniStructure watermark segmental structure schematic diagram；
Fig. 2 is original video frame schematic diagram of the present invention；
Fig. 3 is video frame border schematic diagram of the present invention；
Fig. 4 is the edge pixel section schematic diagram that video frame length of the present invention is more than 138；
Fig. 5 is the embedded extraction process block diagram of the present invention.
Embodiment
See Fig. 1-5, a kind of strong robust video TXT Text Watermarkings insertion and extracting method, including video watermark is embedded and carries
Two parts are taken, watermark is TXT texts, and telescopiny modification length exceedes the image border of particular value, with hsv color space
V (lightness 0-100) store watermark information；
Telescopiny is：
(1.1) two-value TXT watermark texts are read with binary system, stores watermark data with an array T [k], watermark length is
k；
(1.2) T [k] is expanded in segmentation as the following formula, and sequence number I, maximum storage quantity 16KB, 2* are initially inserted into every section of watermark
10*128bit；
(1.3) watermark segmentation SiFor i-th section of watermark；Total hop count is N；N=k/128+1；I is added after switching to ten binary systems
To before 128 watermark sections；Form new watermark section S 'i；It is 138 per segment length；S′iStructure such as Fig. 1；
(1.4) parse video flowing and obtain video frame, this method telescopiny is more than the edge of 138 pixels just for length
Straight line, is embedded in for the too short frame of edge line without watermark；Telescopiny is according to line segment starting point abscissa, from small to large
It is sequentially embedded；The watermark section S ' of each frame video insertioniNumber m, m be the satisfactory number of length in a frame video；
Repeat embedded S 'i；
(1.5) video frame is read, carries out watermark insertion as the following formula；
(x, y) is the coordinate of t-th of pixel on line segment, and wherein V (x, y), represents video frame xth row, the pixel of y rows
The V component of HSV；
(1.6) amended video frame is preserved to former video；
Extraction process is：
(2.1) straight line in Hough transformation detection video frame, straight length threshold value are arranged to 138, obtain containing watermark
Pixel fragment；
(2.2) read video frame, detect top ten sequence number, arrive sequence number i；
If detecting flag sequence, W [k] is reduced as the following formula
S′i[t] is extraction watermark section, and V (x, y) is the value of the v components of coordinate (x, y) point pixel；(x, y) is t-th of picture
The coordinate of vegetarian refreshments；9<t<138；
(2.3) the corresponding watermark section S ' of all different sequence number i are obtainedi[t], removes top ten and is connected afterwards by i sizes, also
Raw water print T [k]；
(2.4) TXT watermark texts are reduced.
Claims (1)
1. a kind of strong robust video TXT Text Watermarkings insertion and extracting method, including video watermark is embedded and extracts two parts,
Watermark is TXT texts, and telescopiny modification length exceedes the image border of particular value, with V (the lightness 0- in hsv color space
100) watermark information is stored；
Telescopiny is：
(1.1) two-value TXT watermark texts are read with binary system, stores watermark data with one-dimension array T [k], watermark length is k；
(1.2) T [k] is expanded in segmentation as the following formula, and sequence number I, maximum storage quantity 16KB, 2*10* are initially inserted into every section of watermark
128bit；
(1.3) watermark segmentation SiFor i-th section of watermark；Total hop count is N；N=k/128+1；I is added to 128 after switching to ten binary systems
Before the watermark section of position；Form new watermark section S 'i；It is 138 per segment length；
(1.4) parse video flowing and obtain video frame, telescopiny is more than the edge line (edge of 138 pixels just for length
Analysis result as shown in figure 3, length meet it is as shown in Figure 4), be embedded in for the too short frame of edge line without watermark；It is embedding
Enter process according to line segment starting point abscissa, be sequentially embedded from small to large；The watermark section S ' of each frame video insertioniNumber m,
M is the satisfactory number of length in a frame video；Repeat embedded S 'i；
(1.5) video frame is read, carries out watermark insertion as the following formula；
(x, y) is the coordinate of t-th of pixel on line segment, and wherein V (x, y), represents video frame xth row, the pixel HSV of y rows
V component；
(1.6) amended video frame is preserved to former video；
Extraction process is：
(2.1) straight line in Hough transformation detection video frame, straight length threshold value are arranged to 138, obtain the pixel containing watermark
Section；
(2.2) read video frame, detect top ten sequence number, arrive sequence number i；
Detect flag sequence, reduce W [k] as the following formula
S′i[t] is extraction watermark section, and V (x, y) is the value of the v components of coordinate (x, y) point pixel；(x, y) is t-th of pixel
Coordinate；9<t<138；
(2.3) the corresponding watermark section S ' of all different sequence number i are obtainedi[t], removes top ten and is connected afterwards by i sizes, reductive water
Print T [k]；
(2.4) TXT watermark texts are reduced.
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Citations (7)
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| CN101853483A (en) * | 2010-04-30 | 2010-10-06 | 北京航空航天大学 | Printing and scanning resilient watermarking method based on mathematical modeling |
| CN102096891A (en) * | 2009-12-11 | 2011-06-15 | 北大方正集团有限公司 | Method and device for embedding and extracting digital watermark |
| US20120051582A1 (en) * | 2010-08-24 | 2012-03-01 | Mithun Das Gupta | Mapping based message encoding for fast reliable visible watermarking |
| JP2014225754A (en) * | 2013-05-15 | 2014-12-04 | 日本電信電話株式会社 | Marker embedding device, marker detection device, marker embedding method, marker detection method, and program |
| CN105915912A (en) * | 2016-04-30 | 2016-08-31 | 安徽天虹数码科技股份有限公司 | Fragile watermark embedding and detection method of MPEG-2 compressed domain video |
| CN105989253A (en) * | 2015-03-06 | 2016-10-05 | 北京万方数据股份有限公司 | Watermark embedding method as well as extraction method and apparatus |
| CN106097238A (en) * | 2016-06-08 | 2016-11-09 | 武汉圆周率软件科技有限公司 | The copy-right protection method of image data and system |
-
2017
- 2017-11-29 CN CN201711228699.7A patent/CN107911754A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102096891A (en) * | 2009-12-11 | 2011-06-15 | 北大方正集团有限公司 | Method and device for embedding and extracting digital watermark |
| CN101853483A (en) * | 2010-04-30 | 2010-10-06 | 北京航空航天大学 | Printing and scanning resilient watermarking method based on mathematical modeling |
| US20120051582A1 (en) * | 2010-08-24 | 2012-03-01 | Mithun Das Gupta | Mapping based message encoding for fast reliable visible watermarking |
| JP2014225754A (en) * | 2013-05-15 | 2014-12-04 | 日本電信電話株式会社 | Marker embedding device, marker detection device, marker embedding method, marker detection method, and program |
| CN105989253A (en) * | 2015-03-06 | 2016-10-05 | 北京万方数据股份有限公司 | Watermark embedding method as well as extraction method and apparatus |
| CN105915912A (en) * | 2016-04-30 | 2016-08-31 | 安徽天虹数码科技股份有限公司 | Fragile watermark embedding and detection method of MPEG-2 compressed domain video |
| CN106097238A (en) * | 2016-06-08 | 2016-11-09 | 武汉圆周率软件科技有限公司 | The copy-right protection method of image data and system |
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