CN106570817A - Geometric attack resistant robust and reversible watermarking method - Google Patents
Geometric attack resistant robust and reversible watermarking method Download PDFInfo
- Publication number
- CN106570817A CN106570817A CN201610935102.1A CN201610935102A CN106570817A CN 106570817 A CN106570817 A CN 106570817A CN 201610935102 A CN201610935102 A CN 201610935102A CN 106570817 A CN106570817 A CN 106570817A
- Authority
- CN
- China
- Prior art keywords
- robust
- reversible
- watermark
- embedded
- embedding
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0021—Image watermarking
- G06T1/005—Robust watermarking, e.g. average attack or collusion attack resistant
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2201/00—General purpose image data processing
- G06T2201/005—Image watermarking
- G06T2201/0061—Embedding of the watermark in each block of the image, e.g. segmented watermarking
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2201/00—General purpose image data processing
- G06T2201/005—Image watermarking
- G06T2201/0065—Extraction of an embedded watermark; Reliable detection
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2201/00—General purpose image data processing
- G06T2201/005—Image watermarking
- G06T2201/0203—Image watermarking whereby the image with embedded watermark is reverted to the original condition before embedding, e.g. lossless, distortion-free or invertible watermarking
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Editing Of Facsimile Originals (AREA)
- Image Processing (AREA)
Abstract
The invention discloses a geometric attack resistant robust and reversible watermarking method. An image is divided into a robust watermark embedded part and a reversible watermark embedded part according to pixel values; the robust watermark embedded part is corroded and expanded, two maximal communication areas are solved, and mass centers of the two areas and the gradient of a connecting line between the mass centers are solved; the robust watermark is embedded, two points of longest distance are searched in the robust watermark, a portion between the two points is divided into blocks via a gradient line, and the amount of blocks is the same with the embedding capacity; the average pixel value of the blocks is calculated, watermark information is embedded in a quantified method, the pixel value is increased to meet the quantification requirement, the modified value diff of each part is recorded, and a bitmap records overflow points; and the reversible watermark is embedded, and coordinates of two points, the modified value diff of each part and the bitmap are embedded into the reversible watermark in a PVO method. According to the invention, the image is avoided from distortion, and it is ensured that information is extracted correctly and an original graph is recovered when there is no attack and information can be extracted in higher accuracy when there is an attack.
Description
Technical field
The invention belongs to digital watermark technology field, more particularly to a kind of robust reversible watermark of resist geometric attackses.
Background technology
In the last few years, in the fields such as military affairs, medical science, remote sensing image processing, scholar original image is analyzed and
Research, by adjusting human eye for the information in insensitive region in image, it is proposed that reversible water mark technology.Extract watermark it
Afterwards, original image accurately can be recovered.But, in real world applications and transmitting procedure, image suffers from various
Geometric attack is (such as：Scaling, rotation).Traditional robust reversible watermark algorithm is roughly divided into two classes：The first kind, two steps are embedded in.First
Robust watermarking embedded images I is obtained into I2, then I2 I2 embedded with the method for the difference reversible water mark of I, obtains final watermark
Image I3；Equations of The Second Kind, carries out watermark using rectangular histogram panning techniques and is embedded in.But both approaches can not all resist geometric attack.
After geometric attack, watermark information cannot be extracted.
The content of the invention
It is an object of the invention to provide a kind of robust reversible watermark of resist geometric attackses, it is intended to which solving traditional robust can
Algorithm for inversion can not resist geometric attack；After by geometric attack, it is impossible to recover artwork piece, the problem that watermark cannot be extracted.
The present invention is achieved in that a kind of robust reversible watermark of resist geometric attackses, the robust of the resist geometric attackses
Picture is divided into two parts according to pixel value by reversible water mark, and a part is used for embedding robust watermarking, another part be used for it is embedding can be against the current
Print；Burn into expansive working is carried out to embedded robust watermarking part, two largest connected regions is obtained, is obtained the barycenter in two regions
And two barycenter line slope；
Embedded robust watermarking, finds apart from two farthest points in robust watermarking, will be the part of point-to-point transmission straight with slope
Line piecemeal, block number are identical with embedding capacity；The average pixel value per block is calculated, with the embedded watermark information of the method for quantifying, increase
Pixel value meets quantization and requires, and records value diff changed per part, records spill point with bitmap；
Embedded reversible water mark, by the coordinate of two points, value diff and bitmap per part modification is embedded in the method for PVO can
India and China against the current.
Further, the embedding robust watermarking is larger 60% of pixel value；Embedding reversible water mark is pixel value less 40%.
Further, the reversible watermark embedding method of the robust of the resist geometric attackses is comprised the following steps：
Step one, splits picture, and artwork is divided into two parts according to pixel value, and a part is used for embedding robust watermarking I1, separately
A part is used for embedding reversible water mark I2；
Step 2, finds barycenter, carries out burn into expansive working to I1, obtain I3；Two that area maximum is found in I3
Connected domain, and barycenter P1, P2 are asked, seek the slope k of two barycenter line L；
Step 3, is embedded in robust watermarking：Find in I1 apart from L farthest two points P3, P4, by the part of I1 point-to-point transmissions
With the straight line piecemeal that slope is k, block number is identical with embedding capacity；The average pixel value per block is calculated, is embedded in the method for quantifying
Watermark information, increase pixel value meet quantization and require, and record value diff changed per part, record spill point with bitmap；
Step 4, is embedded in reversible water mark：By P1, P2 coordinate, value diff and bitmap per part modification is embedding with the method for PVO
Enter in I2.
Further, when being not affected by attacking, the extracting method of watermark is comprised the following steps：
(1) split picture：Artwork is divided into into two parts according to pixel value, a part is used for extracting robust watermarking IW1, another
Part is used for extracting reversible water mark IW2；Obtain for extracting robust watermarking IW1 and extracting reversible water mark IW2；
(2) reversible water mark is extracted, center-of-mass coordinate, value diff_ changed per part are extracted with the method for PVO in IW2
Ex and bitmap；
(3) robust watermarking is extracted, is found in IW1 apart from L farthest two points P3, P4, the part of I1 point-to-point transmissions is used
Straight line piecemeal of the slope for k, block number are identical with embedding capacity；Robust watermarking information is extracted with the method for quantifying；
(4) recover artwork：According to diff_ex and bitmap, the value of diff_ex is deducted in corresponding block.
Further, when under attack, the extracting method of watermark is comprised the following steps：
1) split picture：Artwork is divided into into two parts according to pixel value, a part is used for extracting robust watermarking IW1, another
Part is used for extracting reversible water mark IW2；Obtain for extracting robust watermarking IW1 and extracting reversible water mark IW2；
2) find barycenter：Burn into expansive working is carried out to IW1, IW3 is obtained；Two maximum companies of area are found in IW3
Logical domain, and barycenter IWP1, IWP2 are asked, seek the slope IWK of two barycenter line L；
3) extract robust watermarking：Using IWP1, the IWP2 and slope IWK for obtaining by IW1 piecemeals；Obtain the average picture per block
Element value, extracts watermark information with the method for quantifying.
Another object of the present invention is to provide at a kind of reversible digital watermarking of robust using the resist geometric attackses
Reason system.
Another object of the present invention is to provide a kind of reversible medical image of robust using the resist geometric attackses
Image processing system.
Another object of the present invention is to provide at a kind of reversible remote sensing images of robust using the resist geometric attackses
Reason system.
The robust reversible watermark method of the resist geometric attackses that the present invention is provided, picture is divided into two parts to be respectively embedded into Shandong
Rod watermark and reversible water mark, in the robust watermarking stage, choose less embedment strength derta, make the modification amount of pixel value less,
In the reversible water mark stage, in the block of 4*4, only one of pixel value is changed, change value is 1, and embedding capacity very little.
Therefore, this method avoids the distortion sense of image to a certain extent, and to ensure that and can correctly extract letter when being not affected by and attacking
Artwork is ceased and recovered, when under attack, have higher accuracy to extract information such as table 1- tables 4.The present invention can be used for secret information
Hide；Reversible and robust information is respectively embedded into by picture is divided into two parts, the robust reversibility of algorithm is realized.
Bit error rate when 1. picture Lena of table is under attack, PSNR=36.67
Bit error rate when 2. picture Airlpane of table is under attack, PSNR=36.92
| Attack type | BER |
| JPEG compression (90) | 0% |
| JPEG compression (80) | 1% |
| JPEG compression (70) | 1% |
| Scaling (0.9) | 0 |
| Scaling (1.1) | 1% |
| Scaling (1.2) | 1% |
| Rotation (5) | 0% |
| Rotation (10) | 0% |
| Rotation (15) | 5% |
Bit error rate when 3. picture Elaine of table is under attack, PSNR=37.5
| Attack type | BER |
| JPEG compression (90) | 2% |
| JPEG compression (80) | 2% |
| JPEG compression (70) | 28% |
| Scaling (0.9) | 7% |
| Scaling (1.1) | 18% |
| Scaling (1.2) | 30% |
| Rotation (5) | 0% |
| Rotation (10) | 0% |
| Rotation (15) | 0% |
Bit error rate when 4. picture Barbara of table is under attack, PSNR=37.26
| Attack type | BER |
| JPEG compression (90) | 1% |
| JPEG compression (80) | 1% |
| JPEG compression (70) | 2% |
| Scaling (0.9) | 7% |
| Scaling (1.1) | 23% |
| Scaling (1.2) | 35% |
| Rotation (5) | 0% |
| Rotation (10) | 0% |
| Rotation (15) | 0% |
Description of the drawings
Fig. 1 is watermark embedding method flow chart provided in an embodiment of the present invention.
Fig. 2 is extracting method (the being not affected by attacking) flow chart that the embodiment of the present invention provides watermark.
Fig. 3 is extracting method (under attack) flow chart that the embodiment of the present invention provides watermark.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that specific embodiment described herein is not used to only to explain the present invention
Limit the present invention.
Below in conjunction with the accompanying drawings the application principle of the present invention is explained in detail.
The robust reversible watermark of resist geometric attackses provided in an embodiment of the present invention includes：Watermark embedding method, watermark are carried
Take the extracting method (under attack) of method (being not affected by attacking) and watermark.
As shown in figure 1, watermark embedding method provided in an embodiment of the present invention is comprised the following steps：
S101：Artwork is divided into two parts according to pixel value by segmentation picture, and a part is used for embedding robust watermarking I1 (pixels
Value is larger 60%), and another part is used for embedding reversible water mark I2 (less 40%) of pixel value；
S102：Barycenter is found, burn into expansive working is carried out to I1, I3 is obtained；Two maximum companies of area are found in I3
Logical domain, and barycenter P1, P2 are asked, seek the slope k of two barycenter line L；
S103：Embedded robust watermarking, finds apart from L farthest two points (one, straight line both sides) P3, P4 in I1,
By the straight line piecemeal that the part slope of I1 point-to-point transmissions is k, block number is identical with embedding capacity；The average pixel value per block is calculated,
With the embedded watermark information of the method for quantifying, increase pixel value meets quantization and requires, and records value diff changed per part, with position
Seal records spill point；
S104：P1, P2 coordinate, value diff and bitmap per part modification (are used pixel value with PVO by embedded reversible water mark
Minimum and time little right, so only reduce minima) method be embedded in I2.
As shown in Fig. 2 the extracting method (being not affected by attacking) of watermark provided in an embodiment of the present invention is comprised the following steps：
S201：Segmentation picture：Artwork is divided into into two parts according to pixel value, a part is used for extracting robust watermarking IW1, separately
A part is used for extracting reversible water mark IW2；Obtain for extracting robust watermarking IW1 and extracting reversible water mark IW2；
S202：Reversible water mark is extracted, and center-of-mass coordinate, the value changed per part is extracted with the method for PVO in IW2
Diff_ex and bitmap；
S203：Extract robust watermarking, find in IW1 apart from L farthest two points (one, straight line both sides) P3,
P4, by the straight line piecemeal that the part slope of I1 point-to-point transmissions is k, block number is identical with embedding capacity；Shandong is extracted with the method for quantifying
Rod watermark information；
S204：Recover artwork：According to diff_ex and bitmap, the value of diff_ex is deducted in corresponding block.
As shown in figure 3, the extracting method (under attack) of watermark provided in an embodiment of the present invention is comprised the following steps：
S301：Segmentation picture：Artwork is divided into into two parts according to pixel value, a part is used for extracting robust watermarking IW1, separately
A part is used for extracting reversible water mark IW2；Obtain for extracting robust watermarking IW1 and extracting reversible water mark IW2；
S302：Find barycenter：Burn into expansive working is carried out to IW1, IW3 is obtained；The two of area maximum are found in IW3
Individual connected domain, and barycenter IWP1, IWP2 are asked, seek the slope IWK of two barycenter line L；
S303：Extract robust watermarking：Using IWP1, the IWP2 and slope IWK for obtaining by IW1 piecemeals, obtain flat per block
Pixel value, extracts watermark information with the method for quantifying.
The application principle of the present invention is further described with reference to specific embodiment.
1. the telescopiny of watermark
Step 1, splits picture.
Artwork is divided into into two parts according to pixel value, a part for embedding robust watermarking I1 (pixel value larger 60%),
Another part is used for embedding reversible water mark I2 (less 40%) of pixel value.
Step 2, finds barycenter.
1st step, Image semantic classification：Burn into expansive working is carried out to I1, makes the profile of image become smooth, disconnected narrow
Interruption and eliminate thin outthrust, obtain I3.
2nd step, finds barycenter：Two maximum connected domains of area are found in I3, and asks barycenter P1, P2, seek two barycenter
The slope k of line L.
Step 3, is embedded in robust watermarking.
1st step, picture piecemeal：Find in I1 apart from L farthest two points (one on one side, straight line both sides) P3, P4, will
The part slope of I1 point-to-point transmissions is the straight line piecemeal of k, and block number is identical with embedding capacity；
2nd step, is embedded in watermark：The average pixel value aver per block is calculated, aver is increased to according to embedded information embedding
Aver (if embedding information is 1, is increased to the odd-multiple of derta by the odd number or even-multiple for entering intensity derta；Such as embedding information
It is 0, aver is increased to into the even-multiple of derta), and value diff per part modification is recorded, spill point is recorded with bitmap；
Step 4, is embedded in reversible water mark.
Picture (is divided into into the block of 4*4, according to pixel with PVO by P1, P2 coordinate, value diff and bitmap per part modification
Descending (the X that sorts of value1,X2…X16), obtain the poor D=X of minimum two values15-X16If D=0, this block do not appoint
What changes, and is not embedded in reversible information；If D >=2, D is translated, by minima X16Reduce 1, be not embedded in reversible information；If D=1,
When embedded reversible information is 1, by minima X16Reduce 1, when embedded reversible information is 0, does not do and change) method it is embedding
Enter in I2.
2. the extraction process (be not affected by attack) of watermark
Step 1, splits picture.
With the step of watermark telescopiny 1, obtain for extracting robust watermarking IW1 and extracting reversible water mark IW2；
Step 2, extracts reversible water mark.
(picture is divided into into the block of 4*4, according to (the Y of the descending sequence of pixel value with PVO in IW21,Y2,…Y16),
Obtain poor the D '=Y of minimum two values15-Y16.When D '=0, this block is not embedded in watermark information；When D ' >=3, this
Block is not embedded in watermark information, Y16Increase 1, returns to the value before being embedded in；When D '=1, watermark information 0 is extracted, works as D '=2
When, watermark information 1 is extracted, and by Y16Increase 1, return to it is embedded before value) method extract center-of-mass coordinate, change per part
Value diff_ex and bitmap；
Step 3, extracts robust watermarking.
With the 1st step of watermark telescopiny step 2 and step 3 by picture IW1 piecemeals, (each piece of pixel is calculated with quantization
Meansigma methodss aver ', be the odd-multiple of embedment strength derta, watermark information is 1；For the even-multiple of embedment strength derta, water
Official seal breath extracts robust watermarking information for method 0)；
Step 4, recovers artwork.
According to diff_ex and bitmap, the value of diff_ex is deducted in corresponding block.
3. watermark extraction process (under attack).
Step 1, splits picture.
With the step of watermark telescopiny 1, obtain for extracting robust watermarking IW1.
Step 2, extracts robust watermarking.
With the 1st step of watermark telescopiny step 2 and step 3 by picture IW1 piecemeals, (each piece of pixel is calculated with quantization
Meansigma methodss aver ', be the odd-multiple of embedment strength derta, watermark information is 1；For the even-multiple of embedment strength derta, water
Official seal breath extracts robust watermarking information for method 0).
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of robust reversible watermark method of resist geometric attackses, it is characterised in that the robust of the resist geometric attackses can be against the current
Picture is divided into two parts according to pixel value by impression method, and a part is used for embedding robust watermarking, and another part is used for embedding reversible water mark；
Burn into expansive working is carried out to embedded robust watermarking part, two largest connected regions is obtained, is obtained the barycenter and two in two regions
The slope of barycenter line；
Embedded robust watermarking, finds apart from two farthest points in embedding robust watermarking part, by the part slope of point-to-point transmission
Straight line piecemeal, block number are identical with embedding capacity；The average pixel value per block is calculated, with the embedded watermark information of the method for quantifying, is increased
Big pixel value meets quantization and requires, and records value diff changed per part, records spill point with bitmap；
Embedded reversible water mark, by the coordinate of two points, value diff and bitmap per part modification is embedded in the method for PVO can be against the current
India and China.
2. the robust reversible watermark method of resist geometric attackses as claimed in claim 1, it is characterised in that the embedding robust watermarking
For pixel value it is larger 60%；Embedding reversible water mark is pixel value less 40%.
3. the robust reversible watermark method of resist geometric attackses as claimed in claim 1, it is characterised in that the resist geometric attackses
The reversible watermark embedding method of robust comprise the following steps：
Step one, splits picture, and artwork is divided into two parts according to pixel value, and a part is used for embedding robust watermarking I1, another portion
Divide for embedding reversible water mark I2；
Step 2, finds barycenter, carries out burn into expansive working to I1, obtain I3；Two maximum connections of area are found in I3
Domain, and barycenter P1, P2 are asked, seek the slope k of two barycenter line L；
Step 3, is embedded in robust watermarking, is found apart from L farthest two points P3, P4 in I1, by the part of I1 point-to-point transmissions with tiltedly
Straight line piecemeal of the rate for k, block number are identical with embedding capacity；The average pixel value per block is calculated, with the embedded watermark of the method for quantifying
Information, increase pixel value meet quantization and require, and record value diff changed per part, record spill point with bitmap；
Step 4, is embedded in reversible water mark, and P1, P2 coordinate, value diff and bitmap per part modification are embedded in I2 with the method for PVO
In.
4. the robust reversible watermark method of resist geometric attackses as claimed in claim 1, it is characterised in that water when being not affected by attacking
The extracting method of print is comprised the following steps：
(1) split picture：Artwork is divided into into two parts according to pixel value, a part is used for extracting robust watermarking IW1, another part
For extracting reversible water mark IW2；Obtain for extracting robust watermarking IW1 and extracting reversible water mark IW2；
(2) extract reversible water mark, in IW2 with the method for PVO extract center-of-mass coordinate, per part modification value diff_ex and
Bitmap；
(3) robust watermarking is extracted, is found in IW1 apart from L farthest two points P3, P4, by the part slope of I1 point-to-point transmissions
For the straight line piecemeal of k, block number is identical with embedding capacity；Robust watermarking information is extracted with the method for quantifying；
(4) recover artwork：According to diff_ex and bitmap, the value of diff_ex is deducted in corresponding block.
5. the robust reversible watermark method of resist geometric attackses as claimed in claim 1, it is characterised in that watermark when under attack
Extracting method comprise the following steps：
1) split picture：Artwork is divided into into two parts according to pixel value, a part is used for extracting robust watermarking IW1, another part
For extracting reversible water mark IW2；Obtain for extracting robust watermarking IW1 and extracting reversible water mark IW2；
2) find barycenter：Burn into expansive working is carried out to IW1, IW3 is obtained；Two maximum connections of area are found in IW3
Domain, and barycenter IWP1, IWP2 are asked, seek the slope IWK of two barycenter line L；
3) extract robust watermarking：Using IWP1, the IWP2 and slope IWK for obtaining by IW1 piecemeals；Obtain the mean pixel per block
Value, extracts watermark information with the method for quantifying.
6. the reversible digital watermark processing system of the robust of resist geometric attackses described in a kind of utilization claim 1～5 any one.
7. at the image of the reversible medical image of the robust of resist geometric attackses described in a kind of utilization claim 1～5 any one
Reason system.
8. the reversible Remote Sensing Image Processing System of the robust of resist geometric attackses described in a kind of utilization claim 1～5 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610935102.1A CN106570817B (en) | 2016-11-01 | 2016-11-01 | Robust reversible watermarking method for resisting geometric attack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610935102.1A CN106570817B (en) | 2016-11-01 | 2016-11-01 | Robust reversible watermarking method for resisting geometric attack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106570817A true CN106570817A (en) | 2017-04-19 |
| CN106570817B CN106570817B (en) | 2020-03-06 |
Family
ID=58533417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610935102.1A Active CN106570817B (en) | 2016-11-01 | 2016-11-01 | Robust reversible watermarking method for resisting geometric attack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106570817B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107169915A (en) * | 2017-05-26 | 2017-09-15 | 西安电子科技大学 | A kind of PVO digital watermark methods based on piecemeal consolidation strategy |
| CN108492240A (en) * | 2018-03-21 | 2018-09-04 | 泰山学院 | A kind of reversible image digital watermark spilling solution |
| CN108615217A (en) * | 2018-03-22 | 2018-10-02 | 西安电子科技大学 | A kind of robust reversible watermark method of the anti-JPEG compression based on quantization |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101533506A (en) * | 2009-04-24 | 2009-09-16 | 西安电子科技大学 | Robust image double-watermarking method |
| CN102542655A (en) * | 2011-11-16 | 2012-07-04 | 中钞实业有限公司 | Note anti-counterfeiting discrimination method based on fiber personality characteristics |
| CN104751402A (en) * | 2015-04-16 | 2015-07-01 | 西安电子科技大学 | Method for embedding robust and reversible watermark |
| CN105761196A (en) * | 2016-01-28 | 2016-07-13 | 西安电子科技大学 | Color image reversible digital watermarking method based on three-dimensional prediction error histogram |
-
2016
- 2016-11-01 CN CN201610935102.1A patent/CN106570817B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101533506A (en) * | 2009-04-24 | 2009-09-16 | 西安电子科技大学 | Robust image double-watermarking method |
| CN102542655A (en) * | 2011-11-16 | 2012-07-04 | 中钞实业有限公司 | Note anti-counterfeiting discrimination method based on fiber personality characteristics |
| CN104751402A (en) * | 2015-04-16 | 2015-07-01 | 西安电子科技大学 | Method for embedding robust and reversible watermark |
| CN105761196A (en) * | 2016-01-28 | 2016-07-13 | 西安电子科技大学 | Color image reversible digital watermarking method based on three-dimensional prediction error histogram |
Non-Patent Citations (4)
| Title |
|---|
| XIANG WANG 等: "A novel reversible image data hiding scheme based on pixel value ordering and dynamic pixel block partition", 《INFORMATION SCIENCES》 * |
| XIAOLONG LI 等: "High-fidelity reversible data hiding scheme based on pixel-value-ordering and prediction-error expansion", 《SIGNAL PROCESSING》 * |
| 蔡正保: "一种基于像素差值的无损数字水印技术研究", 《大庆师范学院学报》 * |
| 赵艳丽: "一种可抗几何攻击的图像鲁棒水印算法", 《小型微型计算机系统》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107169915A (en) * | 2017-05-26 | 2017-09-15 | 西安电子科技大学 | A kind of PVO digital watermark methods based on piecemeal consolidation strategy |
| CN107169915B (en) * | 2017-05-26 | 2020-07-03 | 西安电子科技大学 | PVO digital watermarking method based on block merging strategy |
| CN108492240A (en) * | 2018-03-21 | 2018-09-04 | 泰山学院 | A kind of reversible image digital watermark spilling solution |
| CN108492240B (en) * | 2018-03-21 | 2021-09-17 | 泰山学院 | Reversible image digital watermark overflow solution method |
| CN108615217A (en) * | 2018-03-22 | 2018-10-02 | 西安电子科技大学 | A kind of robust reversible watermark method of the anti-JPEG compression based on quantization |
| CN108615217B (en) * | 2018-03-22 | 2021-09-10 | 西安电子科技大学 | Quantization-based JPEG compression resistant robust reversible watermarking method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106570817B (en) | 2020-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102147912B (en) | Adaptive difference expansion-based reversible image watermarking method | |
| Thabit et al. | Medical image authentication using SLT and IWT schemes | |
| CN106023058B (en) | A kind of high-fidelity reversible water mark embedding grammar | |
| CN105741224B (en) | The reversible water mark algorithm divided based on PVO and adaptive block | |
| CN101105857B (en) | High capacity reversible water mark method based on predication and companding technology | |
| CN100517381C (en) | Methof for embedding and extracting watermark based on statistical model of coefficient in transform domain of digital images | |
| CN106228501B (en) | A kind of adaptive reversible digital watermarking process based on integer transform | |
| CN105741225A (en) | Reversible watermark method of multi-dimensional prediction error extension | |
| CN104751402B (en) | A kind of method of robust reversible watermark insertion | |
| CN108280797A (en) | A kind of Arithmetic on Digital Watermarking of Image system based on Texture complication and JND model | |
| CN106570817A (en) | Geometric attack resistant robust and reversible watermarking method | |
| Zhao et al. | Tampered region detection of inpainting JPEG images | |
| Yang et al. | Efficient reversible data hiding algorithm based on gradient-based edge direction prediction | |
| CN106485640A (en) | A kind of reversible water mark computational methods based on multi-level IPVO | |
| Chen et al. | A robust watermarking algorithm based on salient image features | |
| Zhong et al. | A robust image copy-move forgery detection based on mixed moments | |
| Li et al. | Dual video watermarking algorithm based on SIFT and HVS in the contourlet domain | |
| Sharma et al. | A novel multipurpose watermarking scheme capable of protecting and authenticating images with tamper detection and localisation abilities | |
| CN103024375B (en) | A kind of stereo-picture semi-fragile watermarking method that just can perceive distortion based on binocular | |
| Lee et al. | Digital watermarking based on JND model and QR code features | |
| CN104156909B (en) | The robust reversible watermark insertion of image content-based and detection method | |
| CN107169915A (en) | A kind of PVO digital watermark methods based on piecemeal consolidation strategy | |
| Al-Gindy et al. | A novel blind Image watermarking technique for colour RGB images in the DCT domain using green channel | |
| CN108171643B (en) | Robust reversible image watermarking method based on histogram shift and application | |
| CN115690014A (en) | Medical image tampering detection and self-recovery method based on texture degree cross embedding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |