CN108712570A - Enhance the method for the fact and authenticity of Intelligent mobile equipment detection of concealed image - Google Patents
Enhance the method for the fact and authenticity of Intelligent mobile equipment detection of concealed image Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
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- G06Q30/00—Commerce
- G06Q30/018—Certifying business or products
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
- H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
- H04N1/32267—Methods relating to embedding, encoding, decoding, detection or retrieval operations combined with processing of the image
- H04N1/32272—Encryption or ciphering
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Abstract
The present invention provides a kind of method of the fact and authenticity of enhancing Intelligent mobile equipment detection of concealed image, is related to smart mobile phone or the identification of Intelligent mobile equipment information and field of anti-counterfeit technology.After the base map image that this method is hidden in smart mobile phone or the Intelligent mobile equipment decryption corresponding frame page of live video, simultaneous display table figure live video and the hiding base map image of at least part for being decrypted in frame page corresponding with the live video.The present invention can synchronize the base map of the fact and the detection corresponding to the table figure fact of displaying table figure, and formed dynamic comparison, to greatly increase detection or distinguish real-time, authenticity, the transparency, certainty and the live sense of base map, greatly reduce the printed matter containing hidden image and its distinguish the possibility that is counterfeited of APP, better assure that with smart mobile phone or Intelligent mobile equipment APP sweep figure, barcode scanning it is anti-fake trace to the source, the function of anti-channel conflict.
Description
Technical field
The present invention relates to smart mobile phone or the identification of Intelligent mobile equipment information and field of anti-counterfeit technology more particularly to a kind of increasings
The method of the fact and authenticity of strong Intelligent mobile equipment detection of concealed image.
Background technology
Has considerably long history in the technology that the Biao Tuli of printing hides other images or information.With the number of printing
Change and develop, the technical method of more and more hidden images or information is developed application, most commonly used to apply anti-fake
Field.It includes the SI technologies of Graphics Security System companies, JURA that most representative high-fidelity, which hides diagram technology,
The high-fidelity that the ICI technologies and number of patent application of company are 201610519053.3 and 201610518384.5 hides the digital linked network of figure
Technology.
The image for the actual displayed that observer can see is known as table figure；By particular technology be hidden in it is under table figure,
Image that is that naked eyes can not be differentiated and just can see by corresponding detection means is known as base map；By base map be hidden in table figure it
Under process be known as hide figure.
Hiding diagram technology is realized by the structural modulation to screen, and the both macro and micro feature of screen is included, and hides figure skill
In art, the detection of base map is usually used to be realized with periodic lenticular lenses, and the detection of base map can also use intelligence
Mobile phone or Intelligent mobile equipment are detected by algorithm.It is far from smart mobile phone or Intelligent mobile equipment detection base map
No more, the base map of detection must have enough confidence levels that user is allowed to firmly believe, be detected on smart mobile phone or Intelligent mobile equipment
And the base map content shown, it is actually coming from the material picture (i.e. printed matter) captured by it, this is smart mobile phone or intelligence
Mobile device identifies the key of base map.
Mobile internet era, smart mobile phone and intelligent mobile terminal equipment have become important in people's daily life
Component part, Query Information shopping, are read, make a reservation, entertaining, exchanging ..., and more and more things are all with smart mobile phone come complete
At.Mobile Internet brings prodigious facility to people's lives, while more and more industries are all mobile Internet knot
It closes, all trades and professions all dock the traffic ingress with mobile Internet.
In anti-fake industry, sweep that figure is anti-fake, barcode scanning is anti-fake, barcode scanning is traced to the source and barcode scanning anti-channel conflict have become it is main, have
Anti-fake, the anti-channel conflict means of effect.And mobile Internet for sweep figure, barcode scanning it is anti-fake trace to the source, the landing of anti-channel conflict provides new base
Plinth technical conditions.One smart mobile phone of consumer's human hand, scanning figure or code true-false inquiring and information of tracing to the source are convenient and efficient；Producer manages
Reason personnel, officer cracking down on fake goods can also hold smart mobile phone or Intelligent mobile equipment scans our company's product, obtain relevant information, to this
Products carry out anti-channel conflict management and crack down on counterfeit goods.Simultaneously with the raising of people's standard of living, consumption is constantly upgrading, people couple
Product quality and added value are increasingly valued, and smart mobile phone or other mobile devices sweep figure, barcode scanning true-false inquiring and information of tracing to the source
The consumer psychology of consumer is complied with, while also being provided for production producer and is prevented fake products, prevents falsifying from providing technology hand
Section.
Sweep figure, barcode scanning anti-fake, barcode scanning anti-channel conflict of tracing to the source mainly there are following a few class modes at present：
The first kind is redirected using APP barcode scannings, that is, the APP of smart mobile phone or Intelligent mobile equipment is used to scan a weight
Code (such as Quick Response Code) is oriented, a new background page is then linked to, a code living is scanned or inputted on the new page
Character string (such as plain code of one yard of a usual object), then one information of background page return, determines authenticity of products or other phases
Close information.
After APP barcode scannings are redirected to a new background page, it is invisible that a naked eyes are scanned using APP again for second class
Hidden Codes, then by background page return an information, determine authenticity of products or other relevant informations.
Third class, APP scan the sightless Hidden Codes of naked eyes, are connected to a backstage to log in or orient heavy chain, so
After return to user related information.
Then 4th class, one backstage of APP initial landings utilize APP to shoot the sightless Tibetan figure of width naked eyes or hide
Code photo, by this still photo pass to backstage, backstage by simply comparing, algorithm compare or image analysis processing, by rear
Platform return the hidden image or Hidden Codes can reading information, or a conclusion is provided in turn, to achieve the purpose that examine the true and false.
The method that above a few class smart mobile phones or Intelligent mobile equipment identify plain code, Hidden Codes or Tibetan figure has limitation.
In first kind technology, since the technology of generated code has versatility, redirects concatenation code and be easy by one
The code of personation is replaced, and when possible barcode scanning is just linked to a false backstage, behind input or the work code of scanning either what,
False website can reply a false information, to mislead user.Therefore, Tibetan figure or Hidden Codes technology become increasingly to weigh
It wants.
In the second class technology, the APP of Hidden Codes is scanned, when scanning to hiding all kinds of so-called Hidden Codes, not in real time
The process or its scanning result for showing identification do not have the direct property distinguished visually, similar secret operation, only after
As the prompt to user, the APP that such APP is easy to be counterfeited is imitated the information that platform returns, and personation APP, which can be utilized, to be known
Read the invisibility of result, no matter any scanning result or ignore scanning result at all, directly reply a personation from the background or
Palm off preset deceptive information in APP.
In three types of technology, such Hidden Codes may also be counterfeited fixed false redirect preset inside APP and link
It is replaced, to lose anti-fake effect.
In the 4th class technology, hides figure or hide the APP corresponding to code technology, identification process is to shoot a figure first
Then piece passes this static images back backstage, be compared with networking backstage, still, this identification method is also easy to be counterfeited
APP replaced by the personation of still image backstage, prediction picture overlapping inside personation APP, prediction picture generation inside personation APP
For etc. means institute it is counterfeit.Its reason is：The basis of this kind of recognition is the static picture of a width fixed image, and counterfeiter can be very
Easily on the static picture of a width fixed image, the personation base map of a preset same fixed image is superimposed, replaced.
In conclusion the base map for detecting hidden image with smart mobile phone or Intelligent mobile equipment is far from being enough, detection
Base map must have enough confidence levels that user is allowed to firmly believe, the bottom for detecting and showing on smart mobile phone or Intelligent mobile equipment
Figure content, be actually coming from its shooting material picture (i.e. printed matter), this be smart mobile phone or Intelligent mobile equipment knowledge
The key of other base map.The base map or Hidden Codes adhered in printed matter is distinguished true using smart mobile phone or Intelligent mobile equipment APP
Reality, key point are real-time, authenticity, the transparency, certainty, live sense and the expressive force of APP recognition processes, and
It can mutually be confirmed with other Aided Physical detection means (such as periodic piece is examined).
Invention content
The invention solves technology between topic be in view of the above shortcomings of the prior art, a kind of enhancing intelligent mobile to be provided and is set
The method of the fact and authenticity of standby detection of concealed image, by the internal algorithm of smart mobile phone or Intelligent mobile equipment APP,
Quickly analysis recognition is carried out in real time to the live video that its camera is taken the photograph, the fact of synchronous displaying table figure and the table figure are live
The base map of corresponding detection, and formed dynamic comparison, to greatly increase detection or distinguish the real-time, true of base map
Reality, the transparency, certainty and live sense, greatly reduce the possibility that smart mobile phone or Intelligent mobile equipment APP are counterfeited, more
Ensure that well with smart mobile phone or Intelligent mobile equipment APP sweep figure, barcode scanning it is anti-fake trace to the source, the function of anti-channel conflict.
In order to solve the above technical problems, the technical solution used in the present invention is：
A method of the fact and authenticity, this method enhancing Intelligent mobile equipment detection of concealed image include following
Content：It is synchronous after the base map image hidden in smart mobile phone or the Intelligent mobile equipment decryption corresponding frame page of live video
The base map image that display table figure live video and at least part decrypted in frame page corresponding with the live video are hidden.
Further, the base map image of the decryption is continuous, is interim continuous, discrete or discontinuous.
Further, the simultaneous display is：Some or all of table figure live video and the base map image of detection are aobvious
Show and is alternately displayed on the same area or position of device.
Further, the method alternately displayed include but not limited to the switching of table figure image and base map image, overlapping,
It is fade-in fade-out, the variation of integration percentage or other video transition methods.
Further, another situation of the simultaneous display is：Table figure is shown on the different location of display simultaneously
The base map image of live video and detection, the different location include different windows.
Further, each described simultaneous display is synchronous with table figure live video when base map image update, the bottom of at
When figure image replaces with table figure audio video synchronization or asynchronous.
Further, when the base map image of the decryption is discontinuous, extend the display time of base map picture frame page, including but
It is not limited to extend to next frame when decrypting base map image.
Further, the base map image shown in the extended time is the repetition of former base map image, or by with this base map
Base map image that the corresponding table figure image of image is decrypted with different parameters, or the base map image decrypted with series of parameters
Animation.
Further, the base map image of the simultaneous display, table figure video frame page and decryption is shown in temporal error
Or less than 1 second or less than 0.5 second be less than 0.2 second, which includes that the display of base map image is later than table figure live video.
Further, the base map image of the decryption of the display includes several base maps of multilayer, several base maps at least one
Width is synchronous with table figure live video.
Further, the base map being hidden under table figure is to realize Tibetan figure by the Tibetan drawing method modulated based on site
, the site modulation includes but not limited to the modulation to conventional periodic site screen.
Further, the smart mobile phone or Intelligent mobile equipment are that comprising photographic unit, display unit and have image
The hardware-software system of processing function module.
Further, the smart mobile phone or Intelligent mobile equipment include but not limited to smart mobile phone, lithographic plate computer, notes
This computer, portable electronic terminal, wearable device, Specialised mobile terminal equipment.
Further, the OS Type that the smart mobile phone or Intelligent mobile equipment use includes but not limited to pacify
Tall and erect, apple i0S and the Intelligent mobile equipment operating system of other customizations.
It is using advantageous effect caused by above-mentioned technical proposal：Enhancing Intelligent mobile equipment detection provided by the invention
The fact of hidden image and the method for authenticity take the photograph it by the internal algorithm of smart mobile phone or Intelligent mobile equipment APP
The live video taken the photograph as head carries out quick analysis in real time and distinguishes, corresponding to live and table figure fact of synchronous displaying table figure
Detection base map, and formed dynamic comparison, to greatly increase detection or distinguish the real-time of base map, authenticity,
The transparency, certainty and live sense, greatly reduce the possibility that smart mobile phone or Intelligent mobile equipment APP are counterfeited, preferably
Ensure that with smart mobile phone or Intelligent mobile equipment APP sweep figure, barcode scanning it is anti-fake trace to the source, the function of anti-channel conflict.
Description of the drawings
Fig. 1 is the side that hidden image in decryption printed matter is analyzed based on digital video image that the embodiment of the present invention 1 provides
The flow chart of method；
Fig. 2 is that being analyzed based on digital video image for caching base map function that carry that the embodiment of the present invention 1 provides decrypts print
The method flow diagram of hidden image in brush product；
Fig. 3 is that being analyzed based on digital video image with cache table figure function that the embodiment of the present invention 1 provides decrypts print
The method flow diagram of hidden image in brush product；
Fig. 4 is the synchronous display method schematic diagram of image switching or insertion that the embodiment of the present invention 2 provides；Wherein, (a) is
Continuous live video is (b) that discontinuous base map is decrypted, is (c) that the first synchronism switching exports, is (d) second of synchronization
Switching output；
Fig. 5 is the synchronous display method schematic diagram of image switching or insertion that the embodiment of the present invention 3 provides；Wherein, (a) is
Continuous live video is (b) that discontinuous base map is decrypted, and is (c) to stablize the base map exported to show；
Fig. 6 is the method flow diagram that detection Tibetan figure is shown with animation mode that the embodiment of the present invention 4 provides.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
The APP of smart mobile phone or Intelligent mobile equipment is when identifying all kinds of base maps hidden in printed matter, since APP is identified
The limitation of method or the defect of recognizer, the APP that true APP is easy to be counterfeited is replaced, and user can not differentiate APP
The true and false, can not also differentiate the true and false of base map, to which the true and false of former printed matter can not be differentiated, can not effectively realize and sweep figure, sweep
Code it is anti-fake trace to the source, the function of anti-channel conflict.
Core of the invention is exactly the internal algorithm by smart mobile phone or Intelligent mobile equipment APP, is taken the photograph to its camera
To the table figure for keeping base map live video carry out in real time, quickly analysis recognition, the fact of synchronous displaying table figure and the table figure
The base map of detection corresponding to fact, and dynamic comparison is formed, to greatly increase detection or distinguish the real-time of base map
Property, authenticity, the transparency, certainty and live sense, greatly reduce the possibility that APP is counterfeited, better assure that with intelligence
Mobile phone or Intelligent mobile equipment APP sweep figure, barcode scanning it is anti-fake trace to the source, the function of anti-channel conflict.
The invention solves technical difficult point one：The base map that smart mobile phone or Intelligent mobile equipment decrypt, frame
Speed is likely lower than the video frame of the table figure of smart mobile phone or Intelligent mobile equipment camera institute captured in real-time visually nearly singular integral
Number, it is difficult to form the one-to-one correspondence on frame number.The invention solves technical difficult point two：Smart mobile phone or intelligence are improved as possible
Energy mobile device decrypts the frame speed of Tibetan figure.
The basic hardware for decrypting base map in the present invention with Intelligent mobile equipment is required to include but is not limited to：
Device requirement：Camera (camera), display screen and image processor (cpu, gpu, spu signal processor) etc.；
Device type：All kinds of mobile devices such as mobile phone, tablet computer, wearable device, Specialised mobile terminal；
Operating system：Android, ios (apple) etc., can also be the system for being particularly developed customization.
Embodiment 1
Through this embodiment, it will be appreciated that smart mobile phone or Intelligent mobile equipment detect hidden image general flow and
Where difficulty.Video is concatenated by the higher discrete image of frequency acquisition, to be reached visually using the persistence of vision
Continuous effect, each discrete image be known as a frame.In general, the analysis deciphering of hidden image is independent based on each frame
It carries out.
The detection and decryption of base map have specific requirement to the image quality of captured or interception original image.According to Tibetan
The concrete mode of figure, it is desirable that slightly difference, but focusing to camera system and magnifying power have higher requirement.
It is higher anti-fake, anti-copy due to having the function of, the technology of hidden image is realized by the modulation of lattice point structure
(such as：The SI technologies of Graphics Security System companies, the ICI technologies of JURA companies, number of patent application are
201610519053.3 the high-fidelity with 201610518384.5 hides the digital screening technology of figure) there is good development prospect.It is high
The printed matter of quality needs the screen using high line number (such as 1751pi), and hidden image is also necessary under this high-quality printed matter
With the lattice point structure of similar high-frequency (spatial frequency).In order to detect base map, shooting or the image scanned must have enough
High resolution ratio can tell the slight change of lattice point structure.By taking 1751pi as an example, need to have told black (site) and nothing
Black (background) area, therefore, image at least needs the actual resolution of about 2x175=350dpi.For higher anti-fake effect,
When hidden image, often make the screen of higher frequency or more fine structure, therefore, the requirement to the resolution ratio of image also can
Higher, the actual resolution requirement even higher 1000dpi is quite a few to be seen.
Realize that the technology of hidden image is not limited solely to the image of printing by the modulation of lattice point structure, application can also lead to
The lines to body surface is crossed to realize.Such as by be molded, adorn carve the methods of formed in body surface or substrate surface it is similar
The depth lines of site cable or other reflective lines, can also similarly hidden image.When detection, under the conditions of particular light
(such as sidelight) can also treasure figure by the Optical devices such as grating or image processing method solution.The present invention is to such hiding figure
The detection decryption of picture is same effective.
The actual resolution of image refers to the true resolution of image, and is not only the pixel dpi of image.In general,
The actual resolution of image can be less than the pixel resolution of image, much lower sometimes, such as image focusing is bad, then such as phase
Machine uses interpolation calculation, the dpi values etc. to give virtual height.
In order to reach higher spatial resolution, camera on present smart mobile phone or Intelligent mobile equipment generally can be with
Reach the closely shooting (less than 20cm), sometimes, or even to be clapped on the permitted minimum distance of camera (minimum object distance)
It takes the photograph, obtains maximum magnifying power, while ensureing accurately to focus.In terms of technical standpoint, the accurate of short distance is focused to camera just
It is a prodigious challenge, along with the shake of user's hand in shooting process so that it is high-resolution, suitable to obtain a frame
The image of analysis detection decryption base map becomes extremely challenging.
In the present embodiment by taking smart mobile phone as an example, detected in smart mobile phone hiding the corresponding frame page of live video
The method of base map image uses the method for analyzing hidden image in decryption printed matter based on digital video image, as shown in Figure 1, tool
Body method is as described below.
The first step：Exact focus is analyzed：The table figure to be identified is shot with the camera of smart mobile phone or Intelligent mobile equipment,
Analysis is focused to certain frame image captured by smart mobile phone or Intelligent mobile equipment camera.Focusing point to digital picture
Analysis has the method for many routines, including but not limited to Analysis of Contrast, acutance analysis etc..If it is good enough to focus, meet accurate
The requirement of focusing then enters in next step；If not meeting the requirement of exact focus, selection next frame is returned, continues to gather
Burnt analytic process.
The method that the image of the high magnifying power of high-resolution is obtained in video frame page extremely has detection decryption hidden image
Profit.Since the upper camera of short distance is focused because of difficulty, chance is transient.Video image provides a large amount of chance, and to video frame page
The focus analysis of image, which then gives, catches the means for putting forward the chance.
Second step：Geometrical Characteristics Analysis：Calibration, especially image are measured to the geometric properties of above-mentioned frame of digital image
The measurement of scale and direction.
Using pixel as basic unit, geometric properties are described digital picture by the rectangular co-ordinate as unit of pixel.For example,
Center, the trend of lines and point and the spacing of point etc..Wherein, scale (measurement of distance) be as unit of pixel,
Its absolute measure has certain randomness, it is necessary to which there are one amounts to connect the scale of pixel and real space, such as image
Dpi numbers, i.e., the corresponding number of pixels of each inch.
The digital picture of the printed matter of one width hidden image, it is necessary to it meets some requirements, especially the condition of resolution ratio,
It could be detected parsing, extract hidden image.The condition is related to parameter with the mode for hiding figure.Such as based on lattice point structure tune
The digital picture of the Tibetan figure of method processed, carrier (printed matter) in kind must have enough resolution ratio, can clearly differentiate institute
The lattice point structure variation stated, it has to be possible to the clear ink zone for differentiating site and background blank area.That is two sites it
Between at least need to show white space, i.e. at least more than two pixels of the spacing of site there are one pixel.As previously mentioned, by
Scale and angle detecting, if enough resolution ratio (magnifying power and clarity, basic demand is not achieved in image：The dpi > of pixel
2 × screen lpi), which cannot use, and retract and choose next frame, continue first step process.
When the digital picture for hiding base map passes through the analysis of geometric properties, the especially detection of scale and direction meets Tibetan
After resolution requirement needed for figure detection parsing, you can carry out the Tibetan figure detection parsing of next step.
Third walks：Hide figure detection parsing.The detection parsing for hiding figure includes obtaining to hide figure mode and associated parameter.It is right
It is parsed in the detection of digital picture, needs to obtain as unit of pixel and using the coordinate system where pixel as the geometric parameters of reference
Number.
Some or all of mode and parameter of Tibetan figure can be known in advance sometimes, such as hide figure printed matter and produced in design
When parameter (these to hide figure printed matter design parameter it is sometimes still effective to its digital picture)；Or algorithm can be passed through and converted
Can be obtained (such as the digital picture obtained by scanner has good geometrical relationship with artwork, including horizontal put down is erected on direction
Directly, few big deflections；On scale also very precisely, such as 600dpi etc.).Therefore, to the Tibetan figure detection of scan image
Parsing can be obtained as unit of pixel, by simply converting with pixel when Tibetan figure mode and relevant parameter is known in advance
Coordinate system is the parameter of reference, then directly handles image with mode corresponding with Tibetan figure mode, detects hiding base map.
But for smart mobile phone or Intelligent mobile equipment, the geometry between solid images and its digital picture closes
System just becomes not knowing very much.For example, the direction of the paper when direction of camera and its shooting can have prodigious angular deviation；
For another example the far and near variation of camera distance printed matter paper can greatly change the scale (such as dpi) of digital picture.This
When, can only have partial information (such as hiding drawing method) that can be obtained ahead of time, and at least partly geometric parameter need by pair
Digital picture carries out analysis measurement and obtains.
As previously mentioned, the Tibetan figure detection parsing to digital picture, it is only necessary to the geometric parameter based on pixel and its coordinate system
(geometric parameter of relative measurement parameter or pixel space), and need be not necessarily based on physical size (such as centimetre, inch etc.)
With the absolute reference of solid images.Front illustrates by taking scanner as an example and (is equal to digital picture by means of the dpi of scanner
Dpi), by the method for the geometric parameter in the absolute geometry Parameter Switch pixel space of solid images.
Tibetan figure detection with the uncertain digital picture of the geometrical relationship of solid images is parsed, a kind of direct method
Exactly by (for helping to establish the datum mark of point-to-point relative position, easily identifying the spy of resolution with positioning mark, anchor point
Different icon) method etc. establish the geometrical relationship of digital picture and solid images.
The method that another kind obtains Tibetan drawing method and geometric parameter based on image processing and analyzing is then more effective, especially needle
To by modulating the technology into conduct figure, such as number of patent application to lattice point structure as 201610519053.3 Hes
201610518384.5 high-fidelity hide the digital screening technology of figure.It is analyzed by the structure feature to site, including but not
It is limited to the analysis to features such as site spacing, period, frequency, trend, shape, sizes, obtains lattice point structure scale, direction, position
It the relevant geometric parameter such as sets, even directly obtains the mode of Tibetan figure.
Existing Tibetan diagram technology is varied, and most of is to be based on digital linked network, such as number of patent application
201610519053.3 and 201610518384.5 high-fidelity hides the digital screening technology of figure, there is screen angle modulation, site frequency
Rate modulation, network cable frequency modulation, dot shape modulation, cable phase-modulation, site phase-modulation, two-way site (cable) phase
Modulation, the methods of dynamic mole line, the basic principle of these methods are：It initial is opened from one with reference to net point net screen system structure
Begin, requires according to figure is hidden, according to the figure for hiding figure, the system structure with reference to site screen is modulated, modulator approach includes
But it is not limited to size, shape, black and white, position, phase, the density of site, frequency, angle etc..For can be by body surface
Lines come the method for realizing Tibetan figure, modulator approach further includes the depth of lines or the power of reflective function.
For the Tibetan diagram technology based on digital linked network, it is generally not required to setting positioning mark.At this moment, the structure of site can be passed through
It calculates, such as by the spacing of site or period (frequency), magnifying power (linear-scale) can be extrapolated using algorithm, is passed through
The direction of site can extrapolate the direction etc. of image.A kind of effective method is calculated in frequency space, such as two dimension
Fourier transformation.With the corresponding position of peak value in frequency space, you can accurately calculate frequency (lpi) and the direction of site.
Tibetan figure mode and hide graph parameter obtain can in conjunction with the information learnt in advance and practical survey calculation as a result, with
Time needed for the accuracy of parameter, Reduction Computation analysis needed for optimizing to the maximum extent and resource.For example, if being known in advance
The general direction of figure site used is hidden, when calculating analysis digital picture parameter, so that it may to be substantially reduced the range of parameter search.
4th step decrypts and obtains base map：The information obtained according to third step and former Tibetan drawing method, drawing method is hidden with original
Corresponding method, is calculated by algorithm, one weight of detection or multiple base map.
According to the former modulation system for hiding figure, corresponding base map manner of decryption is also different, and basic principle is modulation
Site screen afterwards and the initial base map information for comparing with reference to site screw structure, being hidden to decryption.Optical detection is
According to the structure or its certain feature of initial reference site screen, an optical mask or micro mirror array (such as grating are created
Piece) as detection diaphragm, then detection diaphragm image planes cover is equally covered on table figure, through detection diaphragm, so that it may with decryption
Hiding image or information.
To hide base map digital picture decryption, algorithm may include with digital algorithm analog physical decryption device or
Device.Such as：The Tibetan drawing method that a kind of phase with periodical site is modulated, can use the detection of its entity printed matter
The lenticular lenses of respective frequencies detect in a respective direction；Due to have third step provide parameter, accordingly pixel space with
Pixel is that the frequency of unit and directioin parameter have all had, and can be calculated with the digital algorithm similar to grating and detect base map.
It is modulated on 1751pi for example, hiding drawing method, it is 1000dpi to obtain image by camera, then corresponding site
Frequency is the pixel of 175 lines/1000, i.e. 1000/175=5.714 pixels/lines (period), has this in the direction indicated with one group
The digital parallel lines masking-out in period can decrypt base map.
Decryption to the digital picture for implying base map, algorithm include but not limited to use digital algorithm analog physical decipher
The flexibility of part or device, digital algorithm can provide huge room for improvement and chance.One obvious advantage just exists
It is parsed in the detection of the digital picture to hiding multiple base map with a variety of methods or different parameters, is not needing to change detecting instrument
In the case of, Digital Detecting analytical algorithm can be multi-purpose with a figure, and differently or parameter decrypts multiple base map simultaneously.
With mobile detection apparatus obtain a frame it is good can detect that the image of base map is not easy to.Therefore, once finding
Picture frame, it should preserve.Two kinds of storages are exemplified below, includes the method for caching, video, especially fact is regarded
Frequently largely effective.
The first storage caching method, after decrypting base map, base map is stored in and is cached, as shown in Figure 2.Its advantage is that base map
It calls soon, meanwhile, the size (memory size of occupancy) of base map can be smaller than the former artwork for choosing frame.
Original is chosen frame image deposit caching, as shown in Figure 3 by second of caching method.When calling, by recalculating,
Obtain base map.Advantage is the former lossless preservation of artwork for choosing frame, can advanced optimize, can also detect multiple when re-calling
Base map is without depositing several figures.
So far, the present embodiment can obtain one or more and detect the hiding base map parsed.But it uses
It is far from being enough that smart mobile phone or Intelligent mobile equipment, which decrypt base map, and the base map decrypted must have enough confidence levels to allow
User firmly believes that the base map content for detecting and showing on smart mobile phone or Intelligent mobile equipment is actually coming from it and is clapped
The table figure (i.e. printed matter) in kind taken the photograph.This is the key that smart mobile phone or Intelligent mobile equipment identification base map.
When base map can be decrypted continuously, simultaneous display base map video and Biao Tu videos can form real-time comparison, increase
Strong authenticity.But in many cases, these hiding base maps are likely to discontinuous, and are nonlinear.And by intelligence
Can mobile phone or Intelligent mobile equipment camera captured in real-time to table figure live video be continuous, it is linear.Table figure video
The one-to-one correspondence on frame number can not be formed with the Tibetan figure of detection, to which the comparison one by one by corresponding frame can not be formed.
In order to keep live innervation and the dynamic live sense of reality on the spot in person, and the base map decrypted and decryption can be allowed
The table figure shot when base map is allowed among base map involvement table figure or allows tester that can experience base map conscientiously really at dynamic comparison
The combination of the detection process being derived from inside table figure, rather than the fixation image being preset in algorithm, base map and Biao Tu facts and
It synchronizes to show and just seems extremely important.Two different presentation modes are shown respectively below by embodiment 2 and embodiment 3.It is real
When border operates, both modes are not repelled, and can use respectively, can also use simultaneously, can with it is compatible, in conjunction with making
With.
Embodiment 2
The method of the fact and authenticity that enhance Intelligent mobile equipment detection of concealed image in the present embodiment is a kind of figure
As switching or the synchronous display method being inserted into, as shown in figure 4, the first row in figure shows a series of table figures of continuous table figure video
Frame；Second row shows the corresponding hiding base map decrypted, such as only on frame number 3,6,7,11 obtains base map；
The third line shows a kind of image display pattern, i.e., is switched with the base map decrypted on the former table figure frame for decrypt the base map
Former table figure picture frame.
It is time-consuming shorter in display since the frame number for decrypting base map is limited, it is written in water, it is possible to will not leave behind vision
Effect is persisted, the fourth line in Fig. 4 then shows a kind of method of enhancing base map persistence of vision effect, that is, when extending the display of base map
Between, such as extend 1 second so that observe the real-time video that smart mobile phone or Intelligent mobile equipment camera are taken the photograph in real time in user
When, the persistence of vision effect of real-time video selection table figure frame is left, then synchronism switching, shows 1 second base map decrypted, to
It is formed and is compared.
The core of the method is, when base map is cut, base map and corresponding table figure video are synchronous or almost
It is synchronous.The decryption of base map has certain delay since algorithm calculation amount is larger, but as long as delay is less (being, for example, less than 1 second), no
It can influence the subjective sensation of visual synchronism switching.
The base map obtained by Digital Image Processing generally all also contains the feature of many table figures, rather than completely solely
Stand on the former base map of table figure.The table figure feature that exactly these hidden images are left is compared with the formation of table figure video, especially synchronous
Dynamic comparison so that become extremely difficult using preset fixation image replacement is counterfeit.
Simple switching is used only in the present embodiment, in specific implementation, can also use other transition switching modes, example
Such as switching is overlapped, is fade-in fade-out, the variation of integration percentage or other video transition methods.
This mode of the present embodiment can be broadly interpreted as in a certain specific display space region, at any time to regarding
Frequency image does one direction synchronism switching or transition, i.e. the certain time range in base map incision, and table figure video and base map are almost same
Step.It is nonsynchronous when base map is cut out.So one direction synchronism switching is the core of this method.
Embodiment 3
The present embodiment provides the method for the fact and authenticity of another enhancing Intelligent mobile equipment detection of concealed image,
Realize the mode that base map and Biao Tu audio video synchronizations are shown.In the same manner as in Example 2, smart mobile phone or Intelligent mobile equipment camera
The base map that the live video for the table figure taken the photograph in real time is continuous, but is decrypted through algorithm picks table figure particular frame may be interruption
, it is nonlinear.In the present embodiment, the area of space of display is divided into several parts, or directly display several windows,
The base map of multiple window synchronization display table figure facts and a weight or multiple simultaneous decrypted, as shown in Figure 5.
As different from Example 2, a certain subregion or a certain child window show complete smart mobile phone or intelligent sliding
The table figure continuous videos that dynamic equipment camera is taken the photograph in real time, and other regions or other child window show a corresponding weight
Or the multiple base map decrypted from certain table figure frame.The display of the base map of each child window decryption all continues to what next width decrypted
Base map has the enough display time to be distinguished for user so the display of each child window base map is stable, and the update of base map
It is synchronous with table figure live video, cut out and the fact of base map are nonsynchronous.It is another that this is that one direction synchronism switching is shown
A kind of method.
Embodiment 2 respectively shows one direction synchronous (being synchronized when only base map update is cut) with embodiment 3 and is shown in the time
Segmentation spatially, but the two and be not antagonistic, it can be used together or be compatible with.Such as the live video in embodiment 3 can be by reality
The some scheme applied in example 2 substitutes.Therefore, the mode that figure and table figure audio video synchronization are shown of hiding is realized in embodiment 2 and embodiment 3
Any combinations mode all the present invention coverage area within.
Embodiment 4
The decryption for hiding base map in figure printed matter is to combine one group of parameter complete by decryption method corresponding with drawing method is hidden
At the variation of parameter can influence the effect of base map detection.Such as：The most common type hides drawing method, to periodical site
The Tibetan drawing method that phase is modulated, is hidden by this method and schemes later printed matter, and base map can use the matched grating of frequency
Piece detects.The angle change of lenticular lenses, the variation of the density and direction of interference fringe (moir patterns) when base map can be caused to show.
The movement of lenticular lenses can cause phase change, so as to cause the mobile effect of interference fringe (moir patterns).To such printed matter
Smart mobile phone or the Digital Map images that decrypt of Intelligent mobile equipment APP can also obtain similar effect, such as Fig. 6 institutes
Show, method is to do corresponding variation to Tibetan figure detection parameters.For example, the parameter for controlling angle is changed, for another example
The parameter for controlling frequency can be changed, generate series of parameters or parameter group, then with each (group) parameter to print
The digital picture table figure of brush product carries out base map decryption, to obtain a series of image containing base map of detections, this series of images
It can show in animated way, to reach the authenticity effect of higher expressive force.
This animation display mode, it is only necessary to the digital picture of a width table figure can be completed, in a width table figure digital picture,
By the effect and innervation of series of parameters control base map detection, therefore it is not limited to the digital picture obtained by video, it can be with
It is widely applicable for the digital picture obtained in any manner, including but not limited to scans, take pictures, screenshotss, taking frame etc., very
To the design original text for including digital picture.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, it does not separate the essence of the corresponding technical solution, and the claims in the present invention are limited
Fixed range.
Claims (14)
1. a kind of method of the fact and authenticity of enhancing Intelligent mobile equipment detection of concealed image, it is characterised in that：The party
Method includes the following contents：The base map figure hidden in smart mobile phone or the Intelligent mobile equipment decryption corresponding frame page of live video
As after, what simultaneous display table figure live video and at least part for being decrypted in frame page corresponding with the live video were hidden
Base map image.
2. the method for the fact and authenticity of enhancing Intelligent mobile equipment detection of concealed image according to claim 1,
It is characterized in that：The base map image of the decryption is continuous, is interim continuous, discrete or discontinuous.
3. the method for the fact and authenticity of enhancing Intelligent mobile equipment detection of concealed image according to claim 2,
It is characterized in that：The simultaneous display is：Some or all of table figure live video and the base map image of detection are in display
It is alternately displayed on the same area or position.
4. the method for the fact and authenticity of enhancing Intelligent mobile equipment detection of concealed image according to claim 3,
It is characterized in that：The method alternately displayed includes but not limited to the switching of table figure image and base map image, be overlapped, fade in it is light
Go out, the variation of integration percentage or other video transition methods.
5. the method for the fact and authenticity of enhancing Intelligent mobile equipment detection of concealed image according to claim 2,
It is characterized in that：The simultaneous display is：Show the bottom of table figure live video and detection simultaneously on the different location of display
Figure image, the different location include different windows.
6. fact and the authenticity of the enhancing Intelligent mobile equipment detection of concealed image according to claim 1,3 or 5
Method, it is characterised in that：The simultaneous display is synchronous with table figure live video when base map image update, in base map image
When replacing with table figure audio video synchronization or asynchronous.
7. the method for the fact and authenticity of enhancing Intelligent mobile equipment detection of concealed image according to claim 2,
It is characterized in that：When the base map image of the decryption is discontinuous, extend the display time of base map picture frame page, including but not limited to
When extending to next frame and decrypting base map image.
8. the method for the fact and authenticity of enhancing Intelligent mobile equipment detection of concealed image according to claim 7,
It is characterized in that：The base map image shown in the extended time is the repetition of former base map image, or by with this base map image pair
Answer table figure image different parameters decryption base map image, or with series of parameters decrypt base map image animation.
9. the method for the fact and authenticity of enhancing Intelligent mobile equipment detection of concealed image according to claim 6,
It is characterized in that：The base map image of the simultaneous display, table figure video frame page and decryption is shown in temporal error and is less than 1 second
Or less than 0.5 second or be less than 0.2 second, which includes that the display of base map image is later than table figure live video.
10. the method for the fact and authenticity of enhancing Intelligent mobile equipment detection of concealed image according to claim 1,
It is characterized in that：The base map image of the decryption of the display includes several base maps of multilayer, several base maps at least a width and table
Figure live video synchronizes.
11. the method for the fact and authenticity of enhancing Intelligent mobile equipment detection of concealed image according to claim 1,
It is characterized in that：The base map being hidden under table figure is to realize Tibetan figure by the Tibetan drawing method modulated based on site, described
Site modulation includes but not limited to the modulation to conventional periodic site screen.
12. the method for the fact and authenticity of enhancing Intelligent mobile equipment detection of concealed image according to claim 1,
It is characterized in that：The smart mobile phone or Intelligent mobile equipment are that comprising photographic unit, display unit and have image procossing work(
The hardware-software system of energy module.
13. the side of the fact and authenticity of enhancing Intelligent mobile equipment detection of concealed image according to claim 12
Method, it is characterised in that：The smart mobile phone or Intelligent mobile equipment include but not limited to smart mobile phone, lithographic plate computer, notebook
Computer, portable electronic terminal, wearable device, Specialised mobile terminal equipment.
14. the side of the fact and authenticity of enhancing Intelligent mobile equipment detection of concealed image according to claim 12
Method, it is characterised in that：The OS Type that the smart mobile phone or Intelligent mobile equipment use includes but not limited to Android, apple
Fruit iOS and the Intelligent mobile equipment operating system of other customizations.
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| CN108647659A (en) * | 2018-05-16 | 2018-10-12 | 臧戈平 | A method of hidden image in decryption printed matter is analyzed based on digital video image |
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| CN105550891A (en) * | 2016-03-01 | 2016-05-04 | 源品汇信息科技（北京）股份有限公司 | Product anti-fake source tracing method and system |
| KR20170098701A (en) * | 2016-02-22 | 2017-08-30 | 신현해 | Security system and method for preventing camera image illegal outward flow and reacting real-time crime |
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| KR20170098701A (en) * | 2016-02-22 | 2017-08-30 | 신현해 | Security system and method for preventing camera image illegal outward flow and reacting real-time crime |
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