CN109829843A - A kind of image blind watermarking processing method and processing device improving robustness and encoding amount - Google Patents
A kind of image blind watermarking processing method and processing device improving robustness and encoding amount Download PDFInfo
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Abstract
Embodiment of the invention discloses a kind of image blind watermarking processing method and processing devices for improving robustness and encoding amount, the corresponding transmission source information of original image when outgoing or screenshot is converted into quick response codes, the watermarking images for carrying and sending source information are extracted from quick response codes.It is added in the first frequency domain picture of original image after carrying out size resetting to watermarking images, the Target Photo of watermarked image is obtained by inverse Fourier transform.When decoding the watermark information in Target Photo, carrying out reduction to the region for being superimposed watermarking images can be obtained transmission source information.Quick response codes are used in watermark information coding stage and replace original plaintext coding, are considerably increased the portable information content of onesize watermarking images, are also enhanced the robustness of watermark using the error correcting capability of quick response codes.It does not need manually to recognize when extracting watermark information simultaneously, enhances the identifiability of watermark.
Description
Technical field
The present embodiments relate to image watermark processing technology fields, more particularly, to a kind of raising robustness and encoding amount
Image blind watermarking processing method and processing device.
Background technique
Watermark is generally used for identifying the source of certain picture or for stating copyright, the watermark being typically embedded into is comprising text
The image of word.In existing method, picture frequency domain is write information into based on Fourier transformation and obtains the picture of watermark.When need
Identify the transmission source information of watermarked picture, then restoring out the watermark information in picture just can track picture
Transmission source information.
However, on the one hand, in the existing method, the watermark of insertion is the image comprising text, information extraction therein
Manual identified is relied on, and in actual scene, picture frequency domain information is inherently mixed and disorderly unordered, and work is communicated during image outgoing
Tool can also compress image, be allowed to be difficult to the naked eye to be recognized to destroy original watermark information, be data source information
It is smooth reduction bring great difficulty.On the other hand, use plaintext text as watermarking images, in order to fight original image
Issuable interference of the compression for watermark information during frequency domain noise and outgoing, the text size on watermarking images
It needs sufficiently large, great limitation is produced hence for the portable information content of watermarking images, to affect for image
The detailed description of transmission source.
In actual application, inventor has found existing easy based on watermark of the Fourier transformation addition in picture
Because the loss of picture compression causes watermark, identification is difficult, and the information content that watermark carries is smaller.
Summary of the invention
It is easy based on watermark of the Fourier transformation addition in picture because of picture compression the invention solves existing
Loss causes watermark identification difficult, and the lesser problem of information content that watermark carries.
Against the above technical problems, the embodiment provides a kind of Image Blind water for improving robustness and encoding amount
Print processing method, comprising:
Before in outgoing original image or carrying out screenshot to original image, by according to current user information, equipment letter
The quick response codes that breath and timestamp generate obtain watermarking images, carry out size to the watermarking images and reset to obtain target watermark
Image；
Fourier transformation is carried out to the original image and obtains first frequency domain picture, the target watermarking images are superimposed
Into first frequency domain picture, the first overlap-add region of preset superposition watermark, obtains superposition picture；
The picture that inverse Fourier transform obtains carrying the target watermarking images is carried out to the superposition picture, as target
Picture, Target Photo described in outgoing or carries out screenshot to the Target Photo.
The embodiment provides a kind of image blind watermarking processing units for improving robustness and encoding amount, comprising:
Watermark generation module is used in outgoing original image or before carrying out screenshot to original image, according to current
The quick response codes that user information, facility information and timestamp generate obtain watermarking images, carry out size to the watermarking images
Resetting obtains target watermarking images；
Watermark superposition module obtains first frequency domain picture for carrying out Fourier transformation to the original image, by institute
State target watermarking images be added in the picture of the first frequency domain it is preset superposition watermark the first overlap-add region, be superimposed
Picture；
Processing module obtains carrying the target watermarking images for carrying out inverse Fourier transform to the superposition picture
Picture, as Target Photo, Target Photo described in outgoing or to the Target Photo carry out screenshot.
The embodiment provides a kind of electronic equipment, comprising:
At least one processor, at least one processor, communication interface and bus；Wherein,
The processor, memory, communication interface complete mutual communication by the bus；
The communication interface is for the information transmission between the electronic equipment and the communication equipment of other electronic equipments；
The memory is stored with the program instruction that can be executed by the processor, and the processor calls described program to refer to
Order is able to carry out the process described above.
Present embodiments provide a kind of non-transient computer readable storage medium, the non-transient computer readable storage medium
Matter stores computer instruction, and the computer instruction makes the computer execute the process described above.
The embodiment provides it is a kind of improve robustness and encoding amount image blind watermarking processing method and processing device,
The corresponding transmission source information of original image when outgoing or screenshot is converted into quick response codes, is extracted from quick response codes
The watermarking images for sending source information are carried out.To the first frequency of the original image that is added to after watermarking images progress size resetting
In the picture of rate domain, the Target Photo of watermarked image is obtained by inverse Fourier transform.Decoding the water in Target Photo
When official seal ceases, carrying out reduction to the region for being superimposed watermarking images can be obtained transmission source information.Rank is encoded in watermark information
Section uses quick response codes and replaces original plaintext coding, considerably increases the portable information of onesize watermarking images
Amount, also enhances the robustness of watermark using the error correcting capability of quick response codes.It is not needed when extracting watermark information simultaneously artificial
Identification, enhances the identifiability of watermark.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is blind watermatking image product process schematic diagram as a comparison provided by one embodiment of the present invention；
Fig. 2 is the watermark information extraction flow diagram that another embodiment of the present invention is provided as comparison；
Fig. 3 is the image blind watermarking processing side of a kind of raising robustness and encoding amount that another embodiment of the present invention provides
The flow diagram that watermark picture generates in method；
Fig. 4 is the image blind watermarking processing side of a kind of raising robustness and encoding amount that another embodiment of the present invention provides
The flow diagram that watermark information extracts in method；
Fig. 5 is the flow diagram that the blind watermatking image that another embodiment of the present invention provides generates；
Fig. 6 is the flow diagram for the blind watermatking information extraction that another embodiment of the present invention provides；
Fig. 7 is the image blind watermarking processing dress of a kind of raising robustness and encoding amount that another embodiment of the present invention provides
The structural block diagram set；
Fig. 8 is the structural block diagram for the electronic equipment that another embodiment of the present invention provides.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Before introducing blind watermatking processing method provided by the invention, a kind of blind watermatking processing side as a comparison is introduced
Method, Fig. 1 are blind watermatking image product process schematic diagram as a comparison provided in this embodiment, and Fig. 2 is the work that this example provides
Flow diagram is extracted for the watermark information of comparison.Referring to Fig. 1, in the scheme of comparison, outgoing picture or to picture into
Before row screenshot, when the size of the picture meets the condition of addition watermark, Fourier transformation is carried out to the picture first and is obtained
Frequency area image, meanwhile, using active user and end message write-in image, as watermarking images, (i.e. watermark information is encoded
Journey).Then, by the watermarking images of generation be added to image frequency domain high-frequency region to evade present in original frequency domain
Noise.Finally, carrying out inverse Fourier transform to the frequency area image after superposition watermarking images makes close with original image
Image, and complete outgoing or shot operation.
Referring to fig. 2, in the scheme of comparison, to extract the watermarking images in picture, then first the picture is carried out in Fu
Leaf transformation, acquisition are superimposed on watermarking images therein.Using obtaining watermark information therein after manual identified.
As can be seen that watermarking images are directly superimposed with frequency domain picture, due to watermark figure in watermark information adding procedure
It seem the image comprising word content, therefore the watermarking images being superimposed are likely to lose during picture compression, lead to watermark
Information can not identify, and the information content that watermarking images can carry is limited.During identifying watermark information, need to pass through
It is manually identified, not can guarantee recognition success rate.
In order to solve the problems, such as comparison scheme, Fig. 3 is a kind of raising robustness provided in this embodiment and coding
The flow diagram that watermark picture generates in the image blind watermarking processing method of amount, referring to Fig. 3, this method comprises:
301: outgoing original image or to original image carry out screenshot before, by according to current user information, set
The quick response codes that standby information and timestamp generate obtain watermarking images, carry out size to the watermarking images and reset to obtain target
Watermarking images；
302: Fourier transformation being carried out to the original image and obtains first frequency domain picture, by the target watermarking images
Be added to preset the first overlap-add region for being superimposed watermark in the picture of the first frequency domain, obtains superposition picture；
303: the picture that inverse Fourier transform obtains carrying the target watermarking images is carried out to the superposition picture, as
Target Photo, Target Photo described in outgoing or carries out screenshot to the Target Photo.
Method provided in this embodiment is by computer or is exclusively used in picture watermarking and the equipment for extracting watermark information
It executes.Step 301-303 is the process for adding watermark by Fourier transformation to picture.In outgoing original image or to original
Before picture carries out screenshot, watermarking images are added in original image by step 301-303, watermarking images carry original graph
The source-information of piece, for example, user information, facility information and timestamp when transmission or screenshot.Original image adds watermark
It retransmits or screenshot, the tracking to original image source can be realized by the watermark information for adding on it.For example, for
After concerning security matters picture adds watermark by the above method, after the leakage of concerning security matters sensitive image, picture leakage can be chased after by watermark
Track is traced to the source and positioning is called to account.
In the present embodiment, by quick response codes obtain watermarking images be actually by the location information of quick response codes,
After version information and timing information remove, image that remaining part is reset.For example, quick response codes are determined
Position information, version information and timing information obtain 208 two code information after removing, this 208 2 code information are rearranged to
In 16 × 13 rectangular images, watermarking images are obtained.Target watermarking images are the images obtained after amplifying to watermarking images.The
One overlap-add region is the region set in the picture of first frequency domain in advance, for the region dedicated for being superimposed watermarking images.
A kind of image blind watermarking processing method for improving robustness and encoding amount is present embodiments provided, by outgoing or is cut
The corresponding transmission source information of original image is converted to quick response codes when figure, extracts from quick response codes and carries transmission
The watermarking images of source information.It is added in the first frequency domain picture of original image after carrying out size resetting to watermarking images,
The Target Photo of watermarked image is obtained by inverse Fourier transform.It is right when decoding the watermark information in Target Photo
The region for being superimposed watermarking images carries out reduction and transmission source information can be obtained.It is used in watermark information coding stage quick
Answer code replaces original plaintext coding, considerably increases the portable information content of onesize watermarking images, is rung using quick
The error correcting capability of code is answered to also enhance the robustness of watermark.It does not need manually to recognize when extracting watermark information simultaneously, enhances water
The identifiability of print.
Further, Fig. 4 is a kind of image blind watermarking processing side for improving robustness and encoding amount provided in this embodiment
The flow diagram that watermark information extracts in method, referring to fig. 4, on the basis of the above embodiments, further includes:
401: obtaining the Target Photo of watermark information extraction to be carried out, Fourier transformation is carried out to the Target Photo and is obtained
Second frequency domain picture；
402: intercepted from the picture of the second frequency domain it is preset fold the second watermarked overlap-add region, as watermark
Also original image carries out bounds size reset operation to the watermark also original image, obtains being superimposed upon in the Target Photo
Watermarking images；
403: restoring Target Photo described in outgoing according to the watermarking images or screenshot is carried out to the Target Photo
When user information, facility information and timestamp, as the watermark information of the Target Photo, export restore watermark letter
Breath.
Second overlap-add region is the prespecified region in the picture of second frequency domain where watermarking images.In fact,
First overlap-add region and the second overlap-add region have corresponded to the same area in original image, and only the first overlap-add region is
In one frequency domain picture, the second overlap-add region is in the picture of second frequency domain.Watermark also original image is similar to target watermarking images,
By the way that the watermarking images after watermark also original image progress boundary dimensions reset operation can be extracted watermark information, outgoing is obtained
Target Photo or to Target Photo carry out screenshot when user information, facility information and timestamp.
Present embodiments provide a kind of image blind watermarking processing method for improving robustness and encoding amount, the watermark figure of addition
As the image to be converted to quick response codes, in the process for extracting watermark information, according to the mistake of addition watermarking images
Journey restores obtain watermarking images step by step, to decode watermark information.The process does not need manpower intervention, improves identification effect
Rate and identification accuracy.
Further, described that original image progress Fourier transformation is obtained on the basis of the various embodiments described above
The target watermarking images are added to the of preset superposition watermark in the picture of the first frequency domain by first frequency domain picture
One overlap-add region obtains superposition picture, comprising:
Fourier transformation is carried out to the original image and obtains first frequency domain picture, according to the random seed of setting by institute
It states target watermarking images to upset at random, the target watermarking images after upsetting are added to first overlap-add region, obtain described
It is superimposed picture.
It is superimposed after being upset when being superimposed watermarking images, is folded so that two kinds of colors of black and white are more evenly distributed in first again
Add region, the picture quality after avoiding the excessive watermark to addition of area that same color flocks together impacts.
A kind of image blind watermarking processing method for improving robustness and encoding amount is present embodiments provided, watermarking images are upset
It is overlapped again afterwards, so that watermarking images are difficult to be aware in folding watermarked picture, avoids watermarking images to picture
The influence of quality.
Further, on the basis of the various embodiments described above, it is described intercepted from the picture of the second frequency domain it is preset
The second watermarked overlap-add region is folded, as watermark also original image, bounds size weight is carried out to the watermark also original image
Operation is set, the watermarking images being superimposed upon in the Target Photo are obtained, comprising:
Second overlap-add region is intercepted from the picture of the second frequency domain, according to the random seed to the institute of interception
The image for stating the second overlap-add region is restored, using the image after reduction as the watermark also original image；
To the watermark also original image by Edge contrast, watermarking images are added to the target figure according to setting
The ratio-dependent that size resetting is carried out when piece goes out the corresponding region of each pixel of watermarking images, and each pixel is corresponding
Value of the pixel average in region as the pixel is restored by the value of each pixel of watermarking images and is superimposed upon the target
Watermarking images in picture.
For example, 9 × 9 region has corresponded to a pixel in watermarking images in watermark also original image, in watermarking images
A pixel it is corresponding value be equal to 9 × 9 corresponding regions in pixel average value.So obtained by watermark also original image
To 16 × 13 watermarking images.
A kind of image blind watermarking processing method for improving robustness and encoding amount is present embodiments provided, in watermark reduction
In the process, watermarking images are obtained by bounds size reset operation, passes through the source-information of the watermarking images decoding picture, tool
There is good identifiability.
Further, described to be carried out in outgoing original image or to original image on the basis of the various embodiments described above
Before screenshot, watermarking images are obtained according to the quick response codes that current user information, facility information and timestamp generate, to institute
Watermarking images progress size is stated to reset to obtain target watermarking images, comprising:
Outgoing original image or to original image carry out screenshot before, obtain current user information, facility information and
Timestamp, the user information that will acquire, facility information and timestamp transcoding are decimal number, are generated according to the decimal number of transcoding
Quick response codes, will remove the quick response codes of location information, version information and timing information according to setting watermark re format,
The watermarking images are obtained, the ratio enlargement that the watermarking images are reset according to the size of setting obtains the target watermark
Image.
Further, described to restore mesh described in outgoing according to the watermarking images on the basis of the various embodiments described above
Mark on a map piece or to the Target Photo carry out screenshot when user information, facility information and timestamp, as the target figure
The watermark information of piece exports the watermark information restored, comprising:
The watermarking images are reset, and in watermarking images after rearrangement increase location information, version information and
Timing information generates quick response codes, identifies the corresponding decimal number of quick response codes, solve to obtained decimal number
User information, facility information and time when code obtains Target Photo described in outgoing or carries out screenshot to the Target Photo
Stamp, as the watermark information of the Target Photo, exports the watermark information restored.
Set watermark format, for example, 16 × 13 watermarking images.Location information, version information and timing information are quick
The attribute information of answer code.
In the present embodiment, user information, facility information and timestamp are 8 decimal numbers, these three information groups
At 24 decimal numbers.This 24 decimal number is generated into two dimensional code, removes location information on two dimensional code, version information
And timing information, the information on two-dimensional code data position and error correction bit is only obtained, which is rearranged to 16 × 13 watermarking images.
When to watermarking images decoding, two dimensional code is restored by addition location information, version information and timing information, is known by two dimensional code
Not Chu decimal number, decrypted to obtain user information, facility information and timestamp by decimal number.
A kind of image blind watermarking processing method for improving robustness and encoding amount is present embodiments provided, quick response is passed through
Code, which is realized, is converted to two dimensional code for image credit information, and two dimensional code is decoded as to the process of image credit information, guarantees
Watermark addition and watermark information extraction process are gone on smoothly.
In summary, the process for generating watermarking images is summarized as following steps, step 1: coding current user information, equipment
Information and timestamp are to one 24 decimal numbers；Step 2: by decimal number obtained in step 1 according to quick response
Code is encoded；Step 3: by the location information of quick response codes obtained in step 2, version information and timing information are gone
It recodes after falling, obtains final watermark picture.
The process for extracting watermark information is summarized as following steps, step 1: after carrying out Fourier transformation to image, according to right
Position is answered to extract the watermarking images after superposition original image frequency domain information；Step 2: according to unit block sizes to step 1
Obtained in watermarking images each unit square carry out the resetting of bounds size；Step 3: according to watermark information coding stage
Recodification mode, the location information of completion quick response codes, version information and timing information, and identify watermark letter therein
Breath.
The above process uses quick response codes in watermark information coding stage and replaces original plaintext coding, greatly increases
The portable information content of onesize watermarking images, while using the error correcting capability of quick response codes enhancing the robust of scheme
Property.Bounds size is used during watermark information extracts stage of reduction quick response codes to reset to be conducive to fight
The mixed and disorderly frequency domain information that original image is superimposed on it extracts naked eyes information inconspicuous, is based in conjunction with quick response codes
The error correction step of Reed-Solomon code, to effectively promote the robustness of the watermarking project.
In order to watermarking images generate and watermark information extraction illustrated in more detail, Fig. 5 for the present embodiment provides
Blind watermatking image generate flow diagram, referring to Fig. 5, which can be summarized as following steps:
Step 1: obtaining by outgoing or the original image of screenshot；
Step 2: by current user information, end message, temporal information transcoding is decimal number, and is switched to quickly
Answer code image, and take wherein data bit and error correction bit position as watermark information, and regard the resetting of its size as watermarking images；
Step 3: Fast Fourier Transform (FFT) is done as frequency area image to original image；
Step 4: the high-frequency region size for the frequency area image that watermarking images obtained in step 2 are obtained according to step 3
Upset at random, by the image superposition after upsetting on the real part for each pixel position of frequency area image that step 3 obtains, save with
Machine；
Step 5: image obtained in the previous step being done into inverse Fourier transform, gives up imaginary part information therein, only retains real part
Information obtains the image for carrying blind watermatking；
Step 6: completing outgoing or shot operation using the image in step 5.
Fig. 6 is the flow diagram of blind watermatking information extraction provided in this embodiment, and referring to Fig. 6, which can be summarized
For following steps:
Step 1: Fast Fourier Transform (FFT) being carried out to image and obtains its frequency area image；
Step 2: stage parameter being added according to watermark and is intercepted from frequency area image with noisy watermarking images, life is used
Image is restored at the random seed that the stage saves, is obtained with noisy watermarking images；
Step 3: carrying out the resetting of bounds size to noisy watermarking images, and carry out binaryzation and obtain containing only fastly
The image of fast answer code data bit and error correction bit；
Step 4: the location information of completion Quick Response Code Image, version information and timing information obtain complete fast
Fast answer code image；
Step 5: extracting the decimal number information in Quick Response Code Image；
Step 6: being user, equipment and the temporal information of transmission source by obtained decimal sequence transcoding.
Method provided in this embodiment is improved by improving watermark information coding mode and watermark information extracting method
Outgoing image also improves the information content carried in same size watermarking images, and eliminate to the ability of incompressible equal noises
Extract and need the step of manually recognizing during watermark information, provide it is a kind of more efficiently, it is bigger to carry information content, and robust
Property more preferably image blind watermarking scheme.
Fig. 7 shows the image blind watermarking processing dress of a kind of the raising robustness and encoding amount of the embodiment of the present invention offer
The structural block diagram set, referring to Fig. 7, the image blind watermarking processing unit of raising robustness provided in this embodiment and encoding amount includes
Watermark generation module 701, watermark superposition module 702 and processing module 703, wherein
Watermark generation module 701 is used in outgoing original image or before carrying out screenshot to original image, according to current
User information, the quick response codes that generate of facility information and timestamp obtain watermarking images, ruler is carried out to the watermarking images
Very little resetting obtains target watermarking images；
Watermark superposition module 702 obtains first frequency domain picture for carrying out Fourier transformation to the original image, will
The target watermarking images be added in the picture of the first frequency domain it is preset superposition watermark the first overlap-add region, folded
Add picture；
Processing module 703 obtains carrying the target watermark figure for carrying out inverse Fourier transform to the superposition picture
The picture of picture, as Target Photo, Target Photo described in outgoing or to the Target Photo carry out screenshot.
The image blind watermarking processing unit provided in this embodiment for improving robustness and encoding amount is suitable for above-described embodiment
The raising robustness of middle offer and the image blind watermarking processing method of encoding amount, details are not described herein.
The embodiment provides a kind of image blind watermarking processing units for improving robustness and encoding amount, by outgoing
Or the corresponding transmission source information of original image is converted to quick response codes when screenshot, and carrying is extracted from quick response codes
Send the watermarking images of source information.To the first frequency domain figure for the original image that is added to after watermarking images progress size resetting
In piece, the Target Photo of watermarked image is obtained by inverse Fourier transform.Decoding the watermark information in Target Photo
When, carrying out reduction to the region for being superimposed watermarking images can be obtained transmission source information.It is used in watermark information coding stage
Quick response codes replace original plaintext coding, considerably increase the portable information content of onesize watermarking images, utilize
The error correcting capability of quick response codes also enhances the robustness of watermark.It does not need manually to recognize when extracting watermark information simultaneously, increase
The strong identifiability of watermark.
Fig. 8 is the structural block diagram for showing electronic equipment provided in this embodiment.
Referring to Fig. 8, the electronic equipment includes: processor (processor) 801, memory (memory) 802, communication
Interface (Communications Interface) 803 and bus 804；
Wherein,
The processor 801, memory 802, communication interface 803 complete mutual communication by the bus 804；
The communication interface 803 is for the information transmission between the electronic equipment and the communication equipment of other electronic equipments；
The processor 801 is used to call the program instruction in the memory 802, to execute above-mentioned each method embodiment
Provided method, for example, before in outgoing original image or carrying out screenshot to original image, by according to current use
The quick response codes that family information, facility information and timestamp generate obtain watermarking images, carry out size weight to the watermarking images
It sets to obtain target watermarking images；Fourier transformation is carried out to the original image and obtains first frequency domain picture, by the target
Watermarking images be added in the picture of the first frequency domain it is preset superposition watermark the first overlap-add region, obtain superposition picture；
The picture that inverse Fourier transform obtains carrying the target watermarking images is carried out to the superposition picture, as Target Photo, outside
It sends out Target Photo described or screenshot is carried out to the Target Photo.
The present embodiment provides a kind of non-transient computer readable storage medium, the non-transient computer readable storage medium
Computer instruction is stored, the computer instruction makes the computer execute method provided by above-mentioned each method embodiment, example
It such as include: in outgoing original image or before carrying out screenshot to original image, by according to current user information, facility information
The quick response codes generated with timestamp obtain watermarking images, carry out size to the watermarking images and reset to obtain target watermark figure
Picture；Fourier transformation is carried out to the original image and obtains first frequency domain picture, the target watermarking images are added to institute
The first overlap-add region for stating preset superposition watermark in the picture of first frequency domain, obtains superposition picture；To the superposition picture into
Row inverse Fourier transform obtains carrying the picture of the target watermarking images, as Target Photo, Target Photo described in outgoing or
Person carries out screenshot to the Target Photo.
The present embodiment discloses a kind of computer program product, and the computer program product includes being stored in non-transient calculating
Computer program on machine readable storage medium storing program for executing, the computer program include program instruction, when described program instruction is calculated
When machine executes, computer is able to carry out method provided by above-mentioned each method embodiment, it may for example comprise: in outgoing original image
Or before carrying out screenshot to original image, by the quick sound generated according to current user information, facility information and timestamp
It answers code to obtain watermarking images, size is carried out to the watermarking images and resets to obtain target watermarking images；To the original image into
Row Fourier transformation obtains first frequency domain picture, and the target watermarking images are added in the picture of the first frequency domain in advance
If superposition watermark the first overlap-add region, obtain superposition picture；Inverse Fourier transform is carried out to the superposition picture to be taken
Picture with the target watermarking images, as Target Photo, Target Photo described in outgoing or to the Target Photo carry out
Screenshot.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
The various media that can store program code such as disk.
The embodiments such as electronic equipment described above are only schematical, wherein it is described as illustrated by the separation member
Unit may or may not be physically separated, and component shown as a unit may or may not be object
Manage unit, it can it is in one place, or may be distributed over multiple network units.It can select according to the actual needs
Some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying wound
In the case where the labour for the property made, it can understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the embodiment of the present invention, rather than it is right
It is limited；Although the embodiment of the present invention is described in detail referring to foregoing embodiments, the ordinary skill of this field
Personnel are it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments, or to part
Or all technical features are equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution
The range of each embodiment technical solution of the embodiment of the present invention.
Claims (14)
1. a kind of image blind watermarking processing method for improving robustness and encoding amount characterized by comprising
Outgoing original image or to original image carry out screenshot before, by according to current user information, facility information and
The quick response codes that timestamp generates obtain watermarking images, carry out size to the watermarking images and reset to obtain target watermark figure
Picture；
Fourier transformation is carried out to the original image and obtains first frequency domain picture, the target watermarking images are added to institute
The first overlap-add region for stating preset superposition watermark in the picture of first frequency domain, obtains superposition picture；
The picture that inverse Fourier transform obtains carrying the target watermarking images is carried out to the superposition picture, as target figure
Piece, Target Photo described in outgoing or carries out screenshot to the Target Photo.
2. the method according to claim 1, wherein further include:
The Target Photo for obtaining watermark information extraction to be carried out carries out Fourier transformation to the Target Photo and obtains second frequency
Domain picture；
Intercepted from the picture of the second frequency domain it is preset fold the second watermarked overlap-add region, as watermark also original image
Picture carries out bounds size reset operation to the watermark also original image, obtains the watermark figure being superimposed upon in the Target Photo
Picture；
User when restoring Target Photo described in outgoing according to the watermarking images or carrying out screenshot to the Target Photo
Information, facility information and timestamp export the watermark information restored as the watermark information of the Target Photo.
3. according to the method described in claim 2, it is characterized in that, described obtain original image progress Fourier transformation
The target watermarking images are added to the of preset superposition watermark in the picture of the first frequency domain by first frequency domain picture
One overlap-add region obtains superposition picture, comprising:
Fourier transformation is carried out to the original image and obtains first frequency domain picture, according to the random seed of setting by the mesh
Mark watermarking images are upset at random, and the target watermarking images after upsetting are added to first overlap-add region, obtain the superposition
Picture.
4. according to the method described in claim 3, it is characterized in that, it is described intercepted from the picture of the second frequency domain it is preset
The second watermarked overlap-add region is folded, as watermark also original image, bounds size weight is carried out to the watermark also original image
Operation is set, the watermarking images being superimposed upon in the Target Photo are obtained, comprising:
Second overlap-add region is intercepted from the picture of the second frequency domain, according to the random seed to described the of interception
The image of two overlap-add regions is restored, using the image after reduction as the watermark also original image；
To the watermark also original image by Edge contrast, according to setting when watermarking images are added to the Target Photo
The ratio-dependent for carrying out size resetting goes out the corresponding region of each pixel of watermarking images, by the corresponding region of each pixel
Value of the pixel average as the pixel, restored by the value of each pixel of watermarking images and be superimposed upon the Target Photo
In watermarking images.
5. according to right want 1 described in method, which is characterized in that it is described in outgoing original image or original image to be cut
Before figure, watermarking images are obtained according to the quick response codes that current user information, facility information and timestamp generate, to described
Watermarking images carry out size and reset to obtain target watermarking images, comprising:
Before in outgoing original image or carrying out screenshot to original image, current user information, facility information and time are obtained
Stamp, user information, facility information and the timestamp transcoding that will acquire are decimal number, are generated according to the decimal number of transcoding quick
Answer code is obtained by the quick response codes for removing location information, version information and timing information according to setting watermark re format
The watermarking images, the ratio enlargement that the watermarking images are reset according to the size of setting, obtain the target watermarking images.
6. according to right want 2 described in method, which is characterized in that it is described to restore target described in outgoing according to the watermarking images
Picture or to the Target Photo carry out screenshot when user information, facility information and timestamp, as the Target Photo
Watermark information, export the watermark information restored, comprising:
The watermarking images are reset, and increase location information, version information and timing in watermarking images after rearrangement
Information generates quick response codes, identifies the corresponding decimal number of quick response codes, be decoded to obtained decimal number
User information, facility information and the timestamp when screenshot are carried out to Target Photo described in outgoing or to the Target Photo, are made
For the watermark information of the Target Photo, the watermark information restored is exported.
7. a kind of image blind watermarking processing unit for improving robustness and encoding amount characterized by comprising
Watermark generation module is used in outgoing original image or before carrying out screenshot to original image, according to current user
The quick response codes that information, facility information and timestamp generate obtain watermarking images, carry out size resetting to the watermarking images
Obtain target watermarking images；
Watermark superposition module obtains first frequency domain picture for carrying out Fourier transformation to the original image, by the mesh
Mark watermarking images be added in the picture of the first frequency domain it is preset superposition watermark the first overlap-add region, obtain stacking chart
Piece；
Processing module, for carrying out the figure that inverse Fourier transform obtains carrying the target watermarking images to the superposition picture
Piece, as Target Photo, Target Photo described in outgoing or to the Target Photo carry out screenshot.
8. device according to claim 7, which is characterized in that further include watermark decoder module；
The watermark decoder module is used to obtain the Target Photo of watermark information extraction to be carried out, and carries out Fu to the Target Photo
In leaf transformation obtain second frequency domain picture；Intercept that preset to fold watermarked second folded from the picture of the second frequency domain
Add region, as watermark also original image, bounds size reset operation is carried out to the watermark also original image, obtains being superimposed upon institute
State the watermarking images in Target Photo；Target Photo described in outgoing is restored according to the watermarking images or to the target figure
Piece carries out user information, facility information and the timestamp when screenshot, and as the watermark information of the Target Photo, output is restored
Watermark information.
9. device according to claim 8, which is characterized in that the watermark superposition module is also used to the original image
It carries out Fourier transformation and obtains first frequency domain picture, beaten the target watermarking images at random according to the random seed of setting
Disorderly, the target watermarking images after upsetting are added to first overlap-add region, obtain the superposition picture.
10. device according to claim 9, which is characterized in that the watermark decoder module is for being also used to from institute
It states and intercepts second overlap-add region in the picture of second frequency domain, according to the random seed to second superposition area of interception
The image in domain is restored, using the image after reduction as the watermark also original image；To the watermark by Edge contrast
Also original image goes out watermark according to the ratio-dependent for carrying out size resetting when watermarking images to be added to the Target Photo of setting
The corresponding region of each pixel of image, using the pixel average in the corresponding region of each pixel as the pixel
Value, restores the watermarking images being superimposed upon in the Target Photo by the value of each pixel of watermarking images.
11. device according to claim 7, which is characterized in that the watermark generation module is also used in outgoing original image
Or before carrying out screenshot to original image, current user information, facility information and timestamp are obtained, the user's letter that will acquire
Breath, facility information and timestamp transcoding are decimal number, generate quick response codes according to the decimal number of transcoding, will remove positioning
The quick response codes of information, version information and timing information obtain the watermarking images, by institute according to setting watermark re format
The ratio enlargement that watermarking images are reset according to the size of setting is stated, the target watermarking images are obtained.
12. according to right want 8 described in device, which is characterized in that the watermark decoder module is also used to the watermarking images
It is reset, and increases location information, version information and timing information in watermarking images after rearrangement, generate quick response
Code, identifies the corresponding decimal number of quick response codes, is decoded to obtain target figure described in outgoing obtained decimal number
Piece or to the Target Photo carry out screenshot when user information, facility information and timestamp, as the Target Photo
Watermark information exports the watermark information restored.
13. a kind of electronic equipment characterized by comprising
At least one processor, at least one processor, communication interface and bus；Wherein,
The processor, memory, communication interface complete mutual communication by the bus；
The communication interface is for the information transmission between the electronic equipment and the communication equipment of other electronic equipments；
The memory is stored with the program instruction that can be executed by the processor, and the processor calls described program to instruct energy
It is enough to execute such as method described in any one of claims 1 to 6.
14. a kind of non-transient computer readable storage medium, which is characterized in that the non-transient computer readable storage medium is deposited
Computer instruction is stored up, the computer instruction makes the computer execute such as method as claimed in any one of claims 1 to 6.
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