CN105915912B - A kind of insertion of MPEG-2 compressed domain video fragile watermark and detection method - Google Patents
A kind of insertion of MPEG-2 compressed domain video fragile watermark and detection method Download PDFInfo
- Publication number
- CN105915912B CN105915912B CN201610297899.7A CN201610297899A CN105915912B CN 105915912 B CN105915912 B CN 105915912B CN 201610297899 A CN201610297899 A CN 201610297899A CN 105915912 B CN105915912 B CN 105915912B
- Authority
- CN
- China
- Prior art keywords
- component
- block
- video
- macro block
- mpeg
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- 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
- H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
- H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8358—Generation of protective data, e.g. certificates involving watermark
Abstract
The invention discloses a kind of insertion of MPEG-2 compressed domain video fragile watermark and detection methods, MPEG-2 video code flow is parsed according to MPEG-2 video encoding standard using MPEG-2 decoder, according to the macro block data of I-frame video, luminance block Y-component, chrominance block U component and V component the nonzero coefficient number after dct transform and quantization are counted respectively, and calculate luminance block Y-component energy difference statistical value according to mapping relations；It is encrypted through Arnold conversion and generates binary system watermark information, be embedded in video code flow.The present invention generates watermark according to video macro block content, provides reliable watermark insertion and detection for MPEG-2 digital product, and subtle attack is i.e. discernable；Watermark insertion detection is based on compression domain, and on video quality without influence, computation complexity is low, and real-time is good；Detection watermark does not need original video, belongs to blind watermark method.
Description
Technical field
The present invention relates to a kind of video compress domain fragile watermark more particularly to a kind of MPEG-2 compressed domain video are fragile
Watermark insertion and detection method.
Background technique
Video Fragile Watermarking Technique is an important branch in Investigation of Information Hiding Technology field.Computer Multimedia Technology
Fast development, facilitate storage, editor, the transmission multimedia messages such as video, while also having caused the transmission of multimedia messages
Safety and Copyright Protection.How to prevent multimedia messages from illegally distorting, forging, data integrity is ensured, so that video is crisp
Weak watermark becomes the research hotspot of field of multi-media information safety.
MPEG-2 is the video organized to set up by MPEG and audio lossy compression standard, the number especially suitable for broadcasting-quality
The coding of word TV and transmission are widely used in wireless digital TV-set, DVB (Digital Video Broadcasting, number
Video broadcasting), digital satellite television, DVD (Digital Video Disk, Digital video disc) etc..
The video vulnerable watermark method having proposed at present has：
(1) watermark is directly embedded into original video image by uncompressed domain fragile watermark, the program, and formation contains water
The original video of official seal breath, then carries out Video coding again.The program can be embedded in watermark using existing great amount of images Processing Algorithm,
Algorithm is easily realized.
(2) encoding domain fragile watermark, the program are embedded in watermark using the DCT coefficient of modification video in coding.Due to water
Print embedding operation carries out in an encoding process, and the program is smaller on the influence of the bit rate of video flowing, and is easy to using corresponding
Video encoding standard characteristic be embedded in watermark.
(3) compression domain fragile watermark, the program are directly embedded in or detect watermark in compression domain.It is embedding in video in encoded
Enter watermark not needing to decode and recompile, algorithm complexity is relatively low.
But uncompressed domain fragile watermark and encoding domain fragile watermark are required to first solve for the video information compressed
Code recompiles after being embedded in watermark, not only reduces video quality, and calculating degree is complicated, is unsatisfactory for video code flow transmission
Real-time.Existing compression domain fragile watermark mainly passes through modulation movement vector or the insertion watermark of middle low frequency DCT coefficients, modification
Video information, the problems such as damaged there are real-time and video quality.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of MPEG-2 compressed domain video fragile watermarks
Insertion and detection method provide reliable watermark insertion and detection for MPEG-2 digital product.
The present invention is achieved through the following technical solutions：
A kind of MPEG-2 compressed domain video fragile watermark embedding grammar comprising following steps：
(1) MPEG-2 video code flow is parsed according to MPEG-2 video encoding standard using MPEG-2 decoder, if
Determining I-frame video has N number of macro block, then counts luminance block Y-component nonzero coefficient number after dct transform and quantization in N number of macro block and be
MY；
(2) chrominance block U component nonzero coefficient number M after dct transform and quantization in N number of macro block is countedU；
(3) chrominance block V component nonzero coefficient number M after dct transform and quantization in N number of macro block is countedV；
(4) luminance block Y-component energy difference statistical value M is counted according to mapping relationsE；
(5) by MY、MU、MVAnd ME16 binarization processing are carried out respectively, and form 64 binary sequences, warp
Arnold conversion encryption, obtains binary system encrypted watermark MK；
(6) by binary system encrypted watermark MKIt is embedded into current I-frame video bit stream data tail portion, obtains the video containing watermark
Stream.
Further scheme, the step (1) is middle to count luminance block Y-component non-zero after dct transform and quantization in N number of macro block
Number of coefficients MYMethod include the following steps：
(1) luminance block Y-component nonzero coefficient number Y after dct transform and quantization in i-th of 8x8 macro block is first countedi,
In, i=1,2 ..., N；
(2) further according to YiCalculate luminance block Y-component nonzero coefficient number M after dct transform and quantization in N number of macro blockY：
Further scheme, the step (2) is middle to count chrominance block U component non-zero after dct transform and quantization in N number of macro block
Number of coefficients MUMethod include the following steps：
(1) chrominance block U component nonzero coefficient number U after dct transform and quantization in i-th of 8x8 macro block is first countedi,
In, i=1,2 ..., N；
(2) further according to UiCalculate chrominance block U component nonzero coefficient number M after dct transform and quantization in N number of macro blockU：
Further scheme, the step (3) is middle to count chrominance block V component non-zero after dct transform and quantization in N number of macro block
Number of coefficients MVMethod include the following steps：
(1) chrominance block V component nonzero coefficient number V after dct transform and quantization in i-th of 8x8 macro block is first countedi,
In, i=1,2 ..., N；
(2) further according to Vi, calculate chrominance block V component nonzero coefficient number M after dct transform and quantization in N number of macro blockV：
Further scheme counts luminance block Y-component energy difference statistical value M according to mapping relations in the step (4)ESide
Method includes the following steps：
(1) according to luminance block Y-component dct transform coefficient in i-th of 8x8 macro block, luminance block Y in i-th of 8x8 macro block is calculated
The ENERGY E of componenti：
In formula, i=1,2 ..., N, a, b=0,1 ..., 7, D (a, b) be what 8x8 luminance block Y-component was obtained through dct transform
Coefficient value at a row b column；
(2) compare the ENERGY E of luminance block Y-component in i-th of 8x8 macro blockiWith luminance block Y in the N-i+1 8x8 macro block points
The ENERGY E of amountN-i+1If EiGreater than EN-i+1, then luminance block Y-component energy difference statistical value M in N number of macro blockEAdd 1, MEInitial value
It is 0.
Another goal of the invention of the invention is to provide to a kind of above-mentioned MPEG-2 compressed domain video fragile watermark insertion
The detection method of the acquired video flowing containing watermark comprising following steps：
(1) the MPEG-2 video code flow containing watermark is carried out according to MPEG-2 video encoding standard using MPEG-2 decoder
Parsing, setting I-frame video have N number of macro block data, then count luminance block Y-component non-zero after dct transform and quantization in N number of macro block
Number of coefficients M 'Y；
(2) chrominance block U component nonzero coefficient number M ' after dct transform and quantization in N number of macro block is countedU；
(3) chrominance block V component nonzero coefficient number M ' after dct transform and quantization in N number of macro block is countedV；
(4) luminance block Y-component energy difference statistical value M ' is counted according to mapping relationsE；
(5) by M 'Y、M′U、M′VWith M 'E16 binarization processing are carried out respectively, form 64 binary sequences,
It is encrypted through Arnold conversion, obtains binary system encryption authenticating water-mark M 'K；
(6) compare encryption authenticating water-mark M 'KWith the encrypted watermark M of current I-frame video code stream tail portion insertionKIf M 'KDeng
In MK, then current I-frame video content is not distorted；Otherwise, current I-frame video content is distorted.
The present invention has the following advantages that compared with prior art：
1, the present invention generates watermark according to video macro block content, and subtle attack is i.e. discernable, to the real-time of video information
It is not influenced with video quality；
2, the present invention is based on compression domain to the detection of watermark insertion, and on video quality without influence, computation complexity is low, real
When property is good；In addition, detection watermark does not need original video, belong to blind watermark method.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
A kind of MPEG-2 compressed domain video fragile watermark embedding grammar comprising following steps：
(1) MPEG-2 video code flow is parsed according to MPEG-2 video encoding standard using MPEG-2 decoder, if
Determining I-frame video has N number of macro block, then first counts luminance block Y-component nonzero coefficient after dct transform and quantization in i-th of 8x8 macro block
Number Yi, wherein i=1,2 ..., N；Further according to YiCalculate luminance block Y-component non-zero after dct transform and quantization in N number of macro block
Number of coefficients MY：
(2) chrominance block U component nonzero coefficient number M after dct transform and quantization in N number of macro block is countedU；
First count chrominance block U component nonzero coefficient number U after dct transform and quantization in i-th of 8x8 macro blocki, wherein i
=1,2 ..., N；Further according to UiCalculate chrominance block U component nonzero coefficient number M after dct transform and quantization in N number of macro blockU：
(3) chrominance block V component nonzero coefficient number M after dct transform and quantization in N number of macro block is countedV；
First count chrominance block V component nonzero coefficient number V after dct transform and quantization in i-th of 8x8 macro blocki,
In, i=1,2 ..., N；Further according to Vi, calculate chrominance block V component nonzero coefficient number after dct transform and quantization in N number of macro block
MV：
(4) luminance block Y-component energy difference statistical value M is counted according to mapping relationsE；
Luminance block in i-th of 8x8 macro block is first calculated according to luminance block Y-component dct transform coefficient in i-th of 8x8 macro block
The ENERGY E of Y-componenti：
In formula, i=1,2 ..., N, a, b=0,1 ..., 7, D (a, b) be what 8x8 luminance block Y-component was obtained through dct transform
Coefficient value at a row b column；
Then compare the ENERGY E of luminance block Y-component in i-th of 8x8 macro blockiWith luminance block Y in the N-i+1 8x8 macro block
The ENERGY E of componentN-i+1If EiGreater than EN-i+1, then luminance block Y-component energy difference statistical value M in N number of macro blockEAdd 1, MEInitially
Value is 0；
(5) by MY、MU、MVAnd ME16 binarization processing are carried out respectively, and form 64 binary sequences, are pressed
According to 8 bit a line, 8x8 matrix W is generated8×8, binary system encrypted watermark M is obtained through Arnold conversionK, number of transitions is
M, steps are as follows for an Arnold conversion：
X '=(x+y) mod 8
Y '=(x+2y) mod 8
In formula, x, y are matrix W8×8Element subscript, x ', y ' are the new subscript of matrix after Arnold conversion, x, y=0,
1 ..., 7, mod be complementation；
(6) by binary system encrypted watermark MKIt is embedded into current I-frame video bit stream data tail portion, obtains the video containing watermark
Stream.
To the detection method through the video flowing containing watermark obtained by MPEG-2 compressed domain video fragile watermark embedding grammar,
Include the following steps：
(1) to the MPEG-2 video code flow containing watermark, using MPEG-2 decoder according to MPEG-2 video encoding standard into
Row parsing, according to N number of macro block data of the I-frame video parsed, count in N number of macro block luminance block Y-component through dct transform and
Nonzero coefficient number M ' after quantizationY；
(2) chrominance block U component nonzero coefficient number M ' after dct transform and quantization in N number of macro block is countedU；
(3) chrominance block V component nonzero coefficient number M ' after dct transform and quantization in N number of macro block is countedV；
(4) luminance block Y-component energy difference statistical value M ' is counted according to mapping relationsE；
(5) by M 'Y、M′U、M′VWith M 'E16 binarization processing are carried out respectively, form 64 binary sequences,
It is encrypted through m Arnold conversion, obtains binary system encryption authenticating water-mark M 'K；
(6) compare encryption authenticating water-mark M 'KWith the encrypted watermark M of current I-frame video code stream tail portion insertionKIf M 'KDeng
In MK, then current I-frame video content is not distorted；Otherwise, current I-frame video content is distorted.
The each 8x8 macro block brightness of video I frame of the present invention and chroma data generate watermark, abundant information and independence, subtle to attack
It hits i.e. discernable；Watermark telescopiny does not modify video data, on video quality without influence；It is raw by video code stream analyzing data
At watermark, insertion and detection are carried out in compression domain, and process is simple, and computation complexity is low, does not need parameter selection and setting；Water
Print detection process does not need original video, belongs to blind watermatking.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. a kind of MPEG-2 compressed domain video fragile watermark embedding grammar, it is characterised in that：Include the following steps：
(1) MPEG-2 video code flow is parsed using MPEG-2 decoder according to MPEG-2 video encoding standard, sets I frame
Video has N number of macro block, then counting luminance block Y-component nonzero coefficient number after dct transform and quantization in N number of macro block is MY；
(2) chrominance block U component nonzero coefficient number M after dct transform and quantization in N number of macro block is countedU；
(3) chrominance block V component nonzero coefficient number M after dct transform and quantization in N number of macro block is countedV；
(4) luminance block Y-component energy difference statistical value M is counted according to mapping relationsE；
Its statistical method includes the following steps：
1. calculating luminance block Y-component in i-th of 8x8 macro block according to luminance block Y-component dct transform coefficient in i-th of 8x8 macro block
ENERGY Ei：
In formula, i=1,2 ..., N, a, b=0,1 ..., 7, D (a, b) a rows obtained for 8x8 luminance block Y-component through dct transform
Coefficient value at b column；
2. comparing the ENERGY E of luminance block Y-component in i-th of 8x8 macro blockiWith the energy of luminance block Y-component in the N-i+1 8x8 macro block
Measure EN-i+1If EiGreater than EN-i+1, then luminance block Y-component energy difference statistical value M in N number of macro blockEAdd 1, MEInitial value is 0；
(5) by MY、MU、MVAnd ME16 binarization processing are carried out respectively, and form 64 binary sequences, through Arnold
Transposition encryption obtains binary system encrypted watermark MK；
(6) by binary system encrypted watermark MKIt is embedded into current I-frame video bit stream data tail portion, obtains the video flowing containing watermark.
2. a kind of MPEG-2 compressed domain video fragile watermark embedding grammar according to claim 1, it is characterised in that：It is described
Luminance block Y-component nonzero coefficient number M after dct transform and quantization in the N number of macro block of statistics in step (1)YMethod include with
Lower step：
(1) luminance block Y-component nonzero coefficient number Y after dct transform and quantization in i-th of 8x8 macro block is first countedi, wherein i=
1,2 ..., N；
(2) further according to YiCalculate luminance block Y-component nonzero coefficient number M after dct transform and quantization in N number of macro blockY：
3. a kind of MPEG-2 compressed domain video fragile watermark embedding grammar according to claim 1, it is characterised in that：It is described
Chrominance block U component nonzero coefficient number M after dct transform and quantization in the N number of macro block of statistics in step (2)UMethod include with
Lower step：
(1) chrominance block U component nonzero coefficient number U after dct transform and quantization in i-th of 8x8 macro block is first countedi, wherein i=
1,2 ..., N；
(2) further according to UiCalculate chrominance block U component nonzero coefficient number M after dct transform and quantization in N number of macro blockU：
4. a kind of MPEG-2 compressed domain video fragile watermark embedding grammar according to claim 1, it is characterised in that：It is described
Chrominance block V component nonzero coefficient number M after dct transform and quantization in the N number of macro block of statistics in step (3)VMethod include with
Lower step：
(1) chrominance block V component nonzero coefficient number V after dct transform and quantization in i-th of 8x8 macro block is first countedi, wherein i=
1,2 ..., N；
(2) further according to Vi, calculate chrominance block V component nonzero coefficient number M after dct transform and quantization in N number of macro blockV：
5. the video containing watermark obtained by a kind of MPEG-2 compressed domain video fragile watermark embedding grammar as described in claim 1
The detection method of stream, it is characterised in that：Include the following steps：
(1) the MPEG-2 video code flow containing watermark is solved according to MPEG-2 video encoding standard using MPEG-2 decoder
Analysis, setting I-frame video have N number of macro block data, then count luminance block Y-component non-zero system after dct transform and quantization in N number of macro block
Keep count of M 'Y；
(2) chrominance block U component nonzero coefficient number M ' after dct transform and quantization in N number of macro block is countedU；
(3) chrominance block V component nonzero coefficient number M ' after dct transform and quantization in N number of macro block is countedV；
(4) luminance block Y-component energy difference statistical value M ' is counted according to mapping relationsE；
(5) by M 'Y、M′U、M′VWith M 'E16 binarization processing are carried out respectively, form 64 binary sequences, warp
Arnold conversion encryption obtains binary system encryption authenticating water-mark M 'K；
(6) compare encryption authenticating water-mark M 'KWith the encrypted watermark M of current I-frame video code stream tail portion insertionKIf M 'KEqual to MK,
Then current I-frame video content is not distorted；Otherwise, current I-frame video content is distorted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610297899.7A CN105915912B (en) | 2016-04-30 | 2016-04-30 | A kind of insertion of MPEG-2 compressed domain video fragile watermark and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610297899.7A CN105915912B (en) | 2016-04-30 | 2016-04-30 | A kind of insertion of MPEG-2 compressed domain video fragile watermark and detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105915912A CN105915912A (en) | 2016-08-31 |
| CN105915912B true CN105915912B (en) | 2018-11-23 |
Family
ID=56748583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610297899.7A Active CN105915912B (en) | 2016-04-30 | 2016-04-30 | A kind of insertion of MPEG-2 compressed domain video fragile watermark and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105915912B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658022B (en) * | 2016-11-16 | 2019-05-24 | 佛山科学技术学院 | A kind of Watermarking for Integrity insertion and detection method based on MPEG video compression domain |
| CN106658021B (en) * | 2016-11-16 | 2019-05-14 | 佛山科学技术学院 | There are two types of the insertions and detection method of watermark MPEG video for a kind of tool |
| CN107911754A (en) * | 2017-11-29 | 2018-04-13 | 云南电网有限责任公司 | A kind of strong robust video TXT Text Watermarkings insertion and extracting method |
| CN109151483A (en) * | 2018-09-10 | 2019-01-04 | 五邑大学 | System based on image and video metadata reversible insertion and extraction |
| CN113613015A (en) * | 2021-07-30 | 2021-11-05 | 广州盈可视电子科技有限公司 | Tamper-resistant video generation method and device, electronic equipment and readable medium |
| CN117057971B (en) * | 2023-10-07 | 2023-12-29 | 湖北微模式科技发展有限公司 | JPEG image semi-fragile watermarking algorithm and device based on brightness shrinkage calibration |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101668185A (en) * | 2008-09-05 | 2010-03-10 | 广东电子工业研究院有限公司 | Video monitoring system and video data authentication method thereof |
| CN102223540A (en) * | 2011-07-01 | 2011-10-19 | 宁波大学 | Information hiding method facing to H.264/AVC (automatic volume control) video |
| CN102801947A (en) * | 2012-07-02 | 2012-11-28 | 西南科技大学 | Semantic information transmission and protection method based on H264 |
| CN102857831A (en) * | 2012-08-01 | 2013-01-02 | 合肥工业大学 | H.264 video integrality authentication method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7596239B2 (en) * | 2005-08-02 | 2009-09-29 | Lsi Corporation | Method and/or apparatus for video watermarking and steganography using simulated film grain |
-
2016
- 2016-04-30 CN CN201610297899.7A patent/CN105915912B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101668185A (en) * | 2008-09-05 | 2010-03-10 | 广东电子工业研究院有限公司 | Video monitoring system and video data authentication method thereof |
| CN102223540A (en) * | 2011-07-01 | 2011-10-19 | 宁波大学 | Information hiding method facing to H.264/AVC (automatic volume control) video |
| CN102801947A (en) * | 2012-07-02 | 2012-11-28 | 西南科技大学 | Semantic information transmission and protection method based on H264 |
| CN102857831A (en) * | 2012-08-01 | 2013-01-02 | 合肥工业大学 | H.264 video integrality authentication method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105915912A (en) | 2016-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105915912B (en) | A kind of insertion of MPEG-2 compressed domain video fragile watermark and detection method | |
| KR101213161B1 (en) | Video watermarking apparatus in compression domain and method using the same | |
| CN108965887B (en) | Video information hiding method and device based on inter-block decoupling | |
| CN101668170A (en) | Digital television program copyright protecting method for resisting time synchronization attacks | |
| Prabakaran et al. | A robust QR-Code video watermarking scheme based on SVD and DWT composite domain | |
| CN106101714B (en) | A kind of and tightly coupled H.264 video information hiding method of compression encoding process | |
| CN107318022B (en) | video steganography method based on H.265 standard undistorted drift | |
| CN101540898B (en) | AVS video digital watermark method based on nonnegative matrix decomposition | |
| Li et al. | A semi-fragile video watermarking algorithm based on H. 264/AVC | |
| US20100026813A1 (en) | Video monitoring involving embedding a video characteristic in audio of a video/audio signal | |
| CN103533377B (en) | Frame deletion manipulation detection method based on H.264/AVC (advanced video coding) video | |
| Xu et al. | Detection of video transcoding for digital forensics | |
| Jianfeng et al. | A mpeg2 video watermarking algorithm based on dct domain | |
| CN112714230A (en) | Robust video steganography method and device based on audio side channel | |
| CN105072453A (en) | Video watermarking method for mobile terminal | |
| Chen et al. | H. 264 video authentication based on semi-fragile watermarking | |
| Li et al. | Video watermarking algorithm based DC coefficient | |
| CN100387062C (en) | Method for protecting MPEG-2 video frequency data with compensation | |
| Yoo et al. | Real-time video watermarking techniques robust against re-encoding | |
| CN114598887A (en) | Anti-recompression video watermarking method for controlling bit rate increase | |
| Zhou et al. | The research for tamper forensics on MPEG-2 video based on compressed sensing | |
| Singh et al. | MPEG-2 video watermarking using quantization index modulation | |
| Seong et al. | Scene-based watermarking method for copy protection using image complexity and motion vector amplitude | |
| CN115150627B (en) | DST-based video compression robustness-resistant blind watermarking method | |
| CN110012296B (en) | Rapid information embedding method for MP4 video code stream |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |