CN1996378A - Embedded device for detecting iris watermark information - Google Patents
Embedded device for detecting iris watermark information Download PDFInfo
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- CN1996378A CN1996378A CN 200510135692 CN200510135692A CN1996378A CN 1996378 A CN1996378 A CN 1996378A CN 200510135692 CN200510135692 CN 200510135692 CN 200510135692 A CN200510135692 A CN 200510135692A CN 1996378 A CN1996378 A CN 1996378A
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Abstract
The invention relates to a device embedding acquired iris watermark to the digital image. It adds a device for acquiring iris data and a watermark embedding device in the digital camera. Using the original iris of the photo taker as the watermark acquiring the digital iris information of the photo taker in the mean time of photo taking, to verify the copyright information. It will not affect the picture quality.
Description
[affiliated technical field]
The present invention relates to a kind ofly in digital picture, embed the iris watermark information in time obtain, and to its device that detects, also relate to a kind of can to take a picture and embed the digital camera of iris watermark information.The invention belongs to the digital figure watermark technology.
[background technology]
Digital camera is the product that the digitizing technique with maturation combines with traditional camera.In today of the growing maturation of digitizing technique, digital camera is owing to the parent that its convenient and swift fashion obtains men and women, old and young looks at.Digital camera can be taken high-quality digitized image, and can allow you that they are passed through printout on network bamboo telegraph or the color printer.Conveniently simultaneously because digital photograph can be made amendment by various softwares and edit at an easy rate, its as the copyright information of photo and true integrality all by big heavy discount.
At present, digital watermark technology is a kind of comparatively effective method, is used for preventing and differentiate that modes such as despiteful individual or group spread through the internet under the situation that does not obtain data file owner permission duplicate and propagate the document of copyright protection wantonly.Digital watermark technology is to add some numerical information in the multi-medium data (as image, sound, vision signal etc.) to reach effect such as copyright protection.We utilize embedded digital watermarking device in digital camera, and utilize special watermark information, thereby realize better copyright protection effect.
The watermark information that embeds digital picture can be photographer's a iris information.Iris is the internal of the unique human body that can see from the outside, is positioned at outside the pupil, and within the sclera, grain details is abundant, and people's iris in all one's life can not change, and the collection of iris is untouchable.Iris does not have the genepenetrance in the heredity in shape, has surmounted the anatomy form, even have nothing in common with each other with the twinborn iris of oviparity yet.Thereby iris has the biological characteristic of uniqueness, stability, protected property, and iris recognition is the high and comparatively complicated health recognition technology of security performance.
In the prior art, Friedman has proposed a kind of method based on digital signature in document " GL.Friedman The trustworthy digitalcamera restoring credibility to the photographic image.IEEE Trans; Consumer Electron; Vol.39; PP.905-910; Nov.1993 ", be used for confirming the authenticity of digital camera photo, the method is to utilize RSA arithmetic, generate the digital signature of image again by magazine private cipher key, preserve as another file, together issue with image.Domestic consumer is by public-key cryptography like this, combining image file and digital signature file thereof again, and authenticity that can authentication image, but this method has the shortcoming that has increased storage space, inconvenient administering digital signing messages, can not survey the distortion situation.All first-class people that dives under water have proposed image is divided into two zones in patent documentation " embeds the system and the image modification detection system of authentication information; application number: CN97121196.9; the applying date: 1997.10.27 " to image, calculate hashed value from a zone of image, utilize the hashed value that obtains the block of pixels coding method to be embedded into another zone of image then, with regional assembled unit two zones are merged to get up again.The shortcoming of this method maximum is exactly to orient the zone that image is altered.WongP W document " Wong P W.A public key watermark for image verification andauthentication[A] .In:Proc of the IEEE International Conference onImage Processing (ICIP ' 98) [C]; Chicago; Illinois; USA; 1998,1:455
-A kind of public-key cryptography water mark method that is used for image authentication has been proposed 459 ".The watermarking algorithm of this digital picture is to be utilized as image block to locate the zone of altering, if this piecemeal is handled the method for image and is used on digital camera, to reduce the speed of taking pictures of digital camera greatly, therefore, it is unsatisfactory to be used on the digital camera practicality.Same inventor has proposed the method and apparatus that a kind of digital figure watermark adds and verifies in patent documentation " method of digital figure watermark and related device and the digital camera that can add watermark; number of patent application: CN200510055680.8; the applying date: 2005.3.23 ", and a kind of digital camera that adds watermark, the document has disclosed true integrality how to utilize Fragile Watermark Technique to verify digital picture, thereby has realized the fidelity of logarithmic code photo.But the document is not mentioned the copyright protection that how to realize digital photograph.
[summary of the invention]
At existing deficiency in the prior art, the objective of the invention is to: propose a kind of embedding, detect the device of iris watermark information and can embed the digital camera of iris watermark.With the photo that this digital camera is taken, can verify its copyright information.Owing to be used as the original iris for the people that takes pictures of watermark information among the present invention, and be the digital iris information of when taking pictures, obtaining the people that takes pictures, mode with watermark embeds in the digital photograph, thereby can be by extract the method for iris watermark from digital photograph, verify copyright owner's information, thereby reach the effect of copyright authentication.Simultaneously, do not influence the photographic quality of digital photograph yet.
In order to achieve the above object, the present invention is performed such.
Iris is the annular viewable portion between pupil and sclera, and its surface has comprised abundant information, and as gland nest, gauffer, pigmented spots etc., it just no longer changes after three years old two.In addition, do not change owing to full grown iris is not vulnerable to extraneous injury, therefore the shape without any iris is identical.Even the iris of same individual's left eye and right eye, shape are also inequality.The height uniqueness of iris, stability and the characteristics that can not change are that iris can be used as the material base that identity is differentiated.Therefore utilizing iris is one of biological identification technology of develop rapidly in recent years as the technology of identification.The system principle of this iris and identification thereof is in " research of iris authentication system " of South Korea, Lu Hengli work, and being published in " computer engineering and application, 2002 17 phases " has disclosed.
The present invention utilizes digital watermark technology, before image imaging, embeds in the digital picture taking the digital iris information of gathering simultaneously, and as the foundation of copyright authentication, the copyright person's identity in the time of can the discriminating digit image imaging.
The digital watermark processing system can represent WS (A, W, K, E, D) with following function:
The A digital picture of indicating to protect wherein; K represents the watermark secret key; W represents watermark, and the generation of digital watermarking is generally pseudo random number etc., and W=W (K, A); E represents the embedding algorithm of watermark, and watermark embeds to be watermark is embedded in the original figure works, and general formula is represented: E:W '=E (A.E)
Common algorithm is:
I
W,=I (i)+α (i) W (i) addition principle
I
W,=I (i) (1+ α (i) W (i)) multiplication principle
I (i) expression Digital Media amplitude or variation factor, W (i) is watermark, α (i) is a strength factor.D represents the detection algorithm of digital watermarking.D:H (D (K, W ')), W ' is the image behind the embed watermark, and detection algorithm is generally coherent detection, and it is that 1 expression has watermark through the result of decision behind the detection algorithm as H that H represents, is 0 as H, then is expressed as no watermark.
In the present invention, disclosed the method that in digital picture, embeds iris watermark.This method comprises: obtain digital image information, obtain the digital iris information of original iris, utilize digital watermark technology in described digital image information, to embed the watermark information that comprises described digital iris information, obtain three steps of new digital image information that contain described digital iris information.
Wherein before above-mentioned the 3rd step, also comprise the step that the digital iris information of the described original iris that will extract is encrypted.Because iris information relates to person identification, belong to individual privacy, in order to prevent that other people from extracting iris information from the digital image information of the digital iris information of this embedding, and be used for other illegal objectives, so can encrypt to the digital iris information that adds before the watermark.Like this, even if extract watermark information, because this information is enciphered message, so also can be protected.
First invention provides a kind of device that embeds iris watermark in digital picture.Comprise the device that obtains view data that is used for obtaining digital image information, be used for obtaining the device that obtains iris data of the digital iris information of original iris, be used for utilizing digital watermark technology in described digital image information, to embed the watermark flush mounting of the watermark information that comprises described digital iris information.In addition, also comprise the encryption device that the digital iris information of the described original iris that will extract is encrypted.
Second invention provides a kind of digital camera that embeds the iris watermark device, comprise the device that obtains view data that is used for obtaining digital image information, be used for obtaining the device that obtains iris data of the digital iris information of original iris, be used for utilizing digital watermark technology in described digital image information, to embed the watermark flush mounting of the watermark information that comprises described digital iris information.Wherein, the device that obtains iris data can be to comprise the iris information collector that is used for confining the iris capturing platform of eyeball position and is used for obtaining digital iris information.Described iris image acquiring platform can be positioned at the view-finder position of digital camera, also can be other positions that are positioned at the digital camera back, such as by view-finder.Like this, when taking digital camera, can obtain photographer's iris information simultaneously.The iris information collector can be a miniature digital camera module.In addition, the iris information collector can be the noctovisor scan module also, is used for scanning the iris information of user's eyeball.
Common digital camera generally only has common device, central data processor and the memory storage that obtains view data.As mentioned above, in digital camera of the present invention, also added a device that obtains iris data.In the present embodiment, the described iris capturing platform that is used for confining eyeball position is placed on the position of view-finder, photographer is when taking digital photograph, when pressing camera shutter, because its eyeball is positioned at the position of view-finder, the device that obtains iris data of this digital camera just can obtain photographer's digital iris information simultaneously, then digital iris information is embedded in the digital photograph of taking simultaneously, as copyright authentication information as watermark information.The iris information collector also can be a noctovisor scan processor, by infrared scan iris information is obtained.The iris information collector also can be other device.
In digital camera of the present invention, added a watermark flush mounting in addition, this device can be placed in the central data processor in the described digital camera.The digital iris information that this device will obtain is embedded in the digital image with the form of watermark, and the embedded mode of digital watermarking is publicly-owned technology, does not remake elaboration here.
The 3rd invention provides a kind of digital camera that detects iris watermark information in the digital picture, comprise and be used for from described digital picture, utilizing the corresponding digital digital watermark to extract the extraction watermarking device of the iris watermark information of embedding, obtain the iris deriving means of iris information, be used for the iris information of more described iris watermark information and appointment and the output unit of the result of determination shown in the comparatively validate device of result of determination and the output.
This device can be placed in the central data processor in the described digital camera, also can be used as the processor that independent apparatus module places computing machine and so on, and the logarithmic code photo detects, and judges its copyright information.The process that photo detects, comprise reading of digital signal, from digital signal, utilize the corresponding digital digital watermark to extract hiding watermark information, the watermark information that deciphering extracts, the watermark information after the deciphering and the digital iris information of appointment are compared, the digital iris information of described appointment can be from being stored in the digital iris information in the digital camera, perhaps from the timely digital iris information of extracting of the device that obtains iris information, if the two is complementary, the host of the copyright person of this photo for the digital iris information of appointment then is described, the copyright authentication success, if the two does not match, the copyright person that this photo is described is not the host of the digital iris information of appointment, the copyright authentication failure.The method of relatively taking is digital iris information correlation technique, and this technology is a prior art, no longer sets forth here.
We can also set up authentication center on Internet when detecting photo, set up iris database in this authentication center, and anyone can detect the copyright information of picture here, and the result of notarization checking.
In addition, though present embodiment the invention is not restricted to this, but goes for such as digital display circuits such as digital videos for the digital camera explanation.And, present mobile phone, PDA (palm PC), notebook, video media player etc. has all added the function of digital camera, also can be suitable for device of the present invention.
In addition, use device of the present invention, also can adopt method shown in the present to carry out authentication,, deposit in this device as obtaining specific person's iris information earlier, then when the user uses, must be according to the iris information that originally deposited in, thus judge user's use of whether obtaining the authorization, if be not authorized, can only use the partial function in this device, perhaps can not use fully.Even, do not have can use aforesaid method under the situation of start at this device yet, if do not authorize, can not start shooting.
The present invention's's " device of a kind of embedding, detection iris watermark information " advantage is as follows:
1, since the present invention to adopt photographer's digital iris be watermark information, before digital image-forming, the iris information embedding that just will in time obtain, thereby copyright that can the logarithmic code photo authenticates, and confirms its copyright information.
2, because the present invention adopts built-in watermark embed system, and before the photo imaging, added watermark information, from the authenticity of the copyright information that begins just to have guaranteed digital photograph most.
3, among the present invention, device that obtains iris information and watermark flush mounting all are built in the digital camera, realized integrated, thereby be convenient for carrying.
4, the present invention is when embedding eigenwert, according to the mankind's visual characteristic, success data message is hidden in the insensitive zone of image vision, guarantee the image vision difference minimum before and after the embed watermark.
[description of drawings]
Fig. 1 a is the front view of traditional digital cameras
Fig. 1 b is the rear view of traditional digital cameras
Fig. 2 a is the rear view of digital camera of the present invention
Fig. 2 b is the rear view of present embodiment digital camera
Fig. 3 is the structural drawing that the present embodiment shown in Fig. 2 b obtains the device of iris data
Fig. 4 is the present embodiment digital camera internal module figure shown in Fig. 2 b
Fig. 5 is the inner watermark flush mounting of the present embodiment digital camera shown in a Fig. 2 b synoptic diagram
Fig. 6 is the process flow diagram that present embodiment corresponding shown in Figure 5 is verified photo
[embodiment]
The present invention is described in further detail below in conjunction with drawings and Examples, and see also accompanying drawing.
Being the front view of traditional digital cameras 100 shown in Fig. 1 a, is the rear view of traditional digital cameras 100 shown in Fig. 1 b.Shown in Fig. 1 a, 1b, traditional digital cameras 100 comprises shutter device 101, view-finder 102, flashlamp 106, main lens 104, LCDs 105 and user input apparatus 103.User input apparatus 103 generally comprises button 103A-103C.User input apparatus 103 allows user input data and selects to use the various functions of camera.
In operation, the user adjusts the position of camera 100 and goes to obtain needed scene by view-finder 102 or LCDs 105.When camera 100 was placed on the appropriate location, the user pressed shutter device 101, thereby obtained needed scene.And optical imagery is hinted obliquely at imageing sensor 400 by main lens 104, and the signal here all is an optical signalling.The image that is obtained shows on LCDs 105.Flashlamp 106 is user's servicing units when obtaining the image optimum light effects in being in the not good zone of light status.User input apparatus 103 is user input data and the various functions of selecting to use camera 100.
Fig. 2 a is the rear view of the digital camera 200 in the present embodiment.Digital camera 200 can be used as the camera function of ordinary digital camera, can obtain simultaneously photographer's iris information, and the form of this iris information with watermark is embedded in the captured digital photograph, thereby can judges the copyright information of captured digital photograph.Why digital camera 200 can realize this function, is because added our bright method and apparatus of setting forth.As shown in Figure 2, digital camera 200 comprises the used same parts of digital camera 100, comprises iris capturing platform 201 simultaneously.
In the present embodiment, iris capturing platform 201 and view-finder 102 are combined into parts, shown in Fig. 2 b.Like this, when touching shutter device 101, when the user presses shutter device 101, generally be the requirement that whether meets oneself with the scene that eyes come observation post to obtain by view-finder 102.Like this, iris capturing platform 201 just can be confined the position of eyeball, gathers user's iris information simultaneously by the iris capturing device.After shutter device was pressed, digital camera 200 obtained needed scene by main lens 104 on the one hand, obtains user's iris image on the other hand simultaneously by iris capturing platform 201.
In the present invention, iris capturing platform 201 also can be placed on other positions at digital camera 200 rear portions, and view-finder 102 is other such as iris capturing platform 201 is placed on.
Fig. 3 is the synoptic diagram of the iris deriving means of the present embodiment digital camera shown in Fig. 2 b.Iris capturing platform 201 is the auxiliary equipments on the digital camera 200, is same position with view-finder in the present embodiment.The device that obtains iris is except iris capturing platform 201, and this platform is lens, can be used as view-finder, also can be used for confining the position of user's eyeball.Also have the iris information collector in addition, the iris information collector comprises a pair of infrared light emission diode 202a, 202b, a pair of opaque light baffle plate 203a, 203b, an attachment lens 204 and 205, one spectroscopes 206 of a miniature digital camera module.Wherein spectroscope 206 comprises a dichroscope, and this spectroscopical function allows visible light pass through, and allows Infrared reflect.
Eyeball 300 is when filmed image, just by the observation image of finding a view.Therefore, also just in time be in the parallel position of iris capturing platform 201.When gathering iris information, infrared light emission diode 202a, 202b send Infrared, and opaque light baffle plate 203a, 203b block the downward light that infrared light emission diode 202a, 202b send, and be transmitted on the iris capturing platform 201.The iris information of eyeball 300 to spectroscope 206, owing to be Infrared, reflexes to attachment lens 204 by Infrared.Camera lens 204 is an attachment lens, is a micro lens in the present embodiment, and micro lens can obtain the trickle information of the iris letter of eyeball.Attachment lens 204 also can be a wide-angle lens.To miniature digital camera module 205, miniature digital camera module 205 is converted to digital signal with optical signalling to attachment lens 204, and is stored in the storer at last with the optical signalling transmission of iris.Simultaneously, the image information that obtains by view-finder 102 or main lens 104 is a visible light, is transmitted into spectroscope 206, and passes spectroscope 206 and iris capturing platform 201, arrives eyeball 300.Like this, when the user took digital photograph, eyeball 300 can be seen the image that will obtain by view-finder on the one hand, and its iris information also is acquired on the one hand, and unaffected.
In addition, in the present invention, the iris information collector also can adopt infrared scanner, and different with present embodiment is that what to adopt in the present embodiment is the method for face scanning iris.The device that obtains iris also can be other devices.
Fig. 4 is the present embodiment digital camera 200 internal module figure shown in Fig. 2 b.Digital camera 200 comprises main lens 104, iris capturing platform 201, attachment lens 204, imageing sensor 400, control device 401, central processing unit 402, dynamic storage 407, nonvolatile memory 403, built-in Control Software 404, watermark embedded software 405, data input/output interface 406, shutter device 102, LCDs 105, user input apparatus 103 etc.There is built-in Control Software 404 in the nonvolatile memory 403, includes watermark embedded software 405 in the built-in Control Software 404.
When the user presses shutter device 102, central processing unit 402 and control device 401 drive imageing sensor 400 and obtain image, this image comprises the master image of being obtained from main lens 104, also comprises the iris image of the eyeball 300 that is in iris capturing platform 201 parallel positions that is obtained from attachment lens 204.In the present embodiment, image processor 400 is two processors, the master image that the master image processor processing is obtained from main lens 104, auxilliary image processor are handled from the iris image of attachment lens 204 eyeball 300 parallel with iris capturing platform 201 that obtained.Also two image processors can be merged into an image processor.Image processor 400 is transferred to central processing unit 402 with the pixel data of representative image then.The pixel data of two images all stores dynamic storage 407 into temporarily, and simultaneously, the image that main lens 104 is obtained will show on LCDs 105.The built-in Control Software 404 that is stored in the nonvolatile memory 403 is used for controlling central processing unit 402, also contain watermark embedded software 405 in the built-in Control Software 404, the digital iris information that is stored in the eyeball 300 in the dynamic storage 407 that the watermark embedded software is used for obtaining embeds in the digital picture in the watermark mode, obtain a new digital picture at last, this image is stored in the nonvolatile memory 403 at last.
In the present invention, built-in Control Software 404 also can comprise the software that is used for detecting watermark information.By user input apparatus 103, choose a digital camera 200 image detection function is carried out watermark detection with built-in Control Software 404 to the digital photographs that are stored in the nonvolatile memory 403, detects the watermark information of digital photograph, and carry out iris and contrast, identify its copyright information.Testing process as shown in Figure 6.Related algorithm is a known technology, no longer describes in detail.
In the present invention, digital camera 200 can be used for limited subscriber and use the function of digital camera 200, such as forbid unauthorized user take pictures or watch be stored in the nonvolatile memory 403 before the photo taken.The iris information of having only user's iris information and being stored in the mandate in the nonvolatile memory 403 in advance matches, and could use these functions.In the present invention, can also be limited under the situation of digital camera 200 shutdown, have only after the iris user rs authentication by digital camera 200, digital camera 200 could be started shooting.
Data input/output interface 406, be used for digital camera 200 be connected such as electronic equipments such as computer, digital partners, at transmitting data information between the two.Such as with the image data download in the digital camera 200 in electronic equipment.In the present invention, the software that detects watermark information also can be installed in this electronic equipment, and the view data from digital camera 200 is detected, and detects the true integrality of digital photograph, and carries out iris simultaneously and contrast, and identifies its copyright information.
Fig. 5 is the inner watermark flush mounting of the present embodiment digital camera shown in a Fig. 2 b synoptic diagram.Digital camera 200 comprises main lens 104, attachment lens 204, imageing sensor 400 (master image sensor, auxilliary imageing sensor), obtain the device 501 of digital signal signal value, cipher key calculation device 502, encryption device 503, the device 504 of embed watermark information, nonvolatile memory 403 etc.
The device 501 that obtains the digital signal signal value is used to read out the value of digital signal, and this digital signal is to be reacted to the digital signal that the analog signal conversion in the digital camera becomes by optical imagery; Key generating device 502 is used to generate key; Encryption device 503 is used to utilize secret key encryption numeral iris information; Digital iris information after the device 504 of embed watermark information is used for utilizing digital watermark technology to encrypt is embedded into digital signal.
Arrive imageing sensor 400 when image passes through main lens 104, then, imageing sensor passes to the device 501 that obtains digital signal letter signal value with signal, and device 501 reads out the value of the digital signal of digital picture.Simultaneously, the iris information of eyeball 300 arrives imageing sensor 400 by attachment lens 204, and imageing sensor passes to device 501 with the iris signal, and device 501 reads out the value of digital signal.Then, the value of digital iris signal is utilized the secret key encryption of key generating device 502 generations by encryption device 503.At last, by embed watermark information device 504, the digital iris information after utilizing digital watermark technology to encrypt is embedded in the data image signal.After above calculating, the digital picture that contains digital iris watermark the most at last is stored in the nonvolatile memory 403.
Fig. 6 is the process flow diagram that present embodiment corresponding shown in Figure 5 is verified photo.The step of the operation of checking digital photograph is as follows: step 601 reads for digital signal, restores digital signal earlier from the photo of lossless format.Step 602 utilizes the corresponding digital digital watermark to extract hiding watermark information from the information of hiding watermark.Step 603 extracts watermark information for utilizing the PKI deciphering.Step 604 is the watermark information that relatively extracted and the digital iris information of appointment, be used for judging if the digital iris information of described watermark information and appointment is identical, the digital iris information of then judging described digital picture and described appointment is complementary, the copyright authentication success.If the digital iris information of described watermark information and appointment is different, judge that then the digital iris information of described digital picture and described appointment does not match, the copyright authentication failure.
In the above-described embodiments, told about and how to have utilized the present invention, in digital camera, realized iris information is embedded digital photograph in the mode of watermark, and to its method of verifying.In addition, though present embodiment the invention is not restricted to this, but goes for such as digital display circuits such as digital videos for the digital camera explanation.And, present mobile phone, PDA (palm PC), notebook, video media player etc. has all added the function of digital camera, also can be suitable for device of the present invention.
Above embodiment is the technical scheme of unrestricted our face in order to explanation only, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and the task of not breaking away from the spirit and scope of the present invention is revised or local the replacement, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (9)
1, a kind of device that embeds iris watermark in digital picture comprises:
(1) obtains the device of view data, be used for obtaining digital image information;
(2) obtain the device of iris data, be used for obtaining the digital iris information of original iris;
(3) watermark flush mounting is used for utilizing digital watermark technology to embed the watermark information that comprises described digital iris information in described digital image information.
2, a kind of device that adds iris watermark in digital picture as claimed in claim 1 is characterized in that: also comprise the encryption device that the digital iris information of the described original iris that will extract is encrypted.
3, a kind of digital camera that embeds iris watermark comprises:
(1) obtains the device of view data, be used for obtaining digital image information;
(2) obtain the device of iris data, be used for obtaining the digital iris information of original iris;
(3) watermark flush mounting is used for utilizing digital watermark technology to embed the watermark information that comprises described digital iris information in described digital image information.
4. a kind of digital camera that embeds iris watermark as claimed in claim 3 is characterized in that the device that obtains iris data comprises:
A, iris capturing platform are used for confining the platform of iris image;
B, iris information collector are used for obtaining digital iris information.
5. a kind of digital camera that embeds iris watermark as claimed in claim 4 is characterized in that: described iris capturing platform is positioned at the view-finder position of digital camera.
6. a kind of digital camera that embeds iris watermark as claimed in claim 4, it is characterized in that: described iris image acquiring platform is positioned at the back of digital camera, the iris information when obtaining user's function digit camera.
7, a kind of digital camera that embeds iris watermark as claimed in claim 4 is characterized in that described iris information collector comprises a digital image-forming module.
8. a kind of digital camera that embeds the iris watermark device as claimed in claim 4 is characterized in that described iris information collector comprises a noctovisor scan module.
9. digital camera of verifying iris watermark information in the digital picture comprises:
(1) extracts watermarking device, be used for from described digital picture, utilizing the corresponding digital digital watermark to extract the iris watermark information of embedding;
(2) the iris deriving means obtains iris information;
(3) comparatively validate device is used for more described iris watermark information and described iris information and result of determination;
(4) output unit, the result of determination shown in the output.
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| CN 200510135692 CN1996378A (en) | 2005-12-31 | 2005-12-31 | Embedded device for detecting iris watermark information |
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| CN 200510135692 CN1996378A (en) | 2005-12-31 | 2005-12-31 | Embedded device for detecting iris watermark information |
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| CN107330395A (en) * | 2017-06-27 | 2017-11-07 | 中国矿业大学 | A kind of iris image encryption method based on convolutional neural networks |
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- 2005-12-31 CN CN 200510135692 patent/CN1996378A/en active Pending
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| CN102075928A (en) * | 2011-01-13 | 2011-05-25 | 中兴通讯股份有限公司 | Intelligent terminal, receiving end and method for countersigning by using intelligent terminal |
| WO2012094861A1 (en) * | 2011-01-13 | 2012-07-19 | 中兴通讯股份有限公司 | Intelligent terminal, receiving end, and method for performing countersigning using intelligent terminal |
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| CN106851403A (en) * | 2017-02-27 | 2017-06-13 | 首影科技（深圳）有限公司 | Display device and content safety player method |
| CN106851403B (en) * | 2017-02-27 | 2023-11-28 | 首影科技（深圳）有限公司 | Display device for preventing pirate playing picture and content safe playing method |
| CN107330395A (en) * | 2017-06-27 | 2017-11-07 | 中国矿业大学 | A kind of iris image encryption method based on convolutional neural networks |
| CN107330395B (en) * | 2017-06-27 | 2018-11-09 | 中国矿业大学 | A kind of iris image encryption method based on convolutional neural networks |
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