CN205179222U - Real -time video monitoring device of shooing anti -fake watermark of hiding - Google Patents
Real -time video monitoring device of shooing anti -fake watermark of hiding Download PDFInfo
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- CN205179222U CN205179222U CN201520529050.9U CN201520529050U CN205179222U CN 205179222 U CN205179222 U CN 205179222U CN 201520529050 U CN201520529050 U CN 201520529050U CN 205179222 U CN205179222 U CN 205179222U
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Abstract
The utility model provides a same device, wherein that real -time video monitoring device of shooing anti -fake watermark of hiding, surveillance video formation of image light path comprises surveillance camera camera lens, optical imaging battery of lens, beam splitting device and control camera CCD in proper order, and watermark formation of image light path comprises the adjustable light source of low -power, collimating lens, watermark transmission mask, watermark imaging lens group, beam splitting device and control camera CCD in proper order, and the beam splitting device in two formation of image light paths shares for the light path with control camera CCD beam splitting device installs in the quadrature position of surveillance video formation of image light path and watermark formation of image light path, merges two tunnel formation of images become all the way, makes watermark image and surveillance video image realize non - coherence stack. The utility model discloses a physics means realize the anti -fake watermark of real -time shooting and hide in surveillance video, borrow this the utility model discloses can improve surveillance video's antifalsification and reliability, and then follow the public credibility that surveillance video is ensured to technological angle, realize more easily, be favorable to the lowering system cost.
Description
Technical field
The utility model belongs to the field of anti-counterfeit technology of video monitoring, specifically relates to a kind of video monitoring apparatus hiding shooting anti-counterfei waterprint in real time.
Background technology
Video monitoring is the important component part of safety and protection system, traditional supervisory control system generally includes front-end camera, transmission cable and video monitoring platform, video camera can be divided into network digital camera and analog video camera, as the collection of head end video picture signal.Supervisory control system is the integrated system that a kind of prevention ability is stronger, and its monitor video enriches with directly perceived, accurate, timely and the information content and is widely used in many occasions.In recent years, along with the develop rapidly of computer, network, image procossing and transmission technology, Video Supervision Technique there has also been significant progress.Video monitoring makes full use of characteristics of the multimedia, in conjunction with technology such as seizure, hard disc recording in real time, serves powerful deterrent force to crime, more can delinquency prevention effectively, and each monitoring site of real-time tracking, reflects that ability can be fought crime effectively rapidly.Surveillance video is often as most important legal argument, and for refuting denial and the sophistry of lawless person, but in video recording, most important part is also of common occurrence owing to being deleted the case caused by malice.
The application of video monitoring widely, community security, shopping square, highway, bus and large-scale celebration etc., and the accuracy of surveillance video and reliability are made most accurately judge to seem particularly important.Because monitor video uses extensively, and can be used as the most reliable legal argument, lawless person is originally by deleting the data on hard disk, all monitor video files are all destroyed and denies, but the loss of these mass data is certain to expose very large weak point, involve out a collection of related personnel, that lawless person or unable to escape the net of justice.Some lawless person then adopts more brilliant means at present, and by the key component frame deletion in monitor video or replacement, this is just judged that the accuracy of surveillance video and reliability bring very large trouble.
In order to improve the anti-counterfeiting performance of monitor video, Chinese patent CN104168484A discloses a kind of video watermark process of view-based access control model attention mechanism, this invention selects the vision non-significant region DCT domain of MPEG-2 key frame of video to embed binary system watermark information, realizes the object of video anti-counterfeiting and infringement.Chinese patent CN103997652A discloses a kind of video watermark embedding grammar and device, this invention is according to the binary data of watermark information to be embedded and default coding rule, determine encoding block quantity needed for watermark information to be embedded and motion vector needed for each encoding block is encoded, and according to determined encoding block quantity and motion vector, encode, with embed watermark information in target video frame from start code BOB(beginning of block) to needing each encoding block of embedded embed watermark information target video frame.Chinese patent CN102892048A discloses a kind of video watermark method for anti-counterfeit of resist geometric attacks, this invention is by extracting the maximum stable extremal region MSER of frame of video, the elliptic region simulated is screened, eliminate region overlapping, choose for final watermark embedment elliptic region, then by the vertical low-frequency band of horizontal high-frequent (HL) and the vertical high frequency band of horizontal low frequencies (LH) of amendment wavelet conversion coefficient, watermark embedment is carried out to the characteristic area selected, enhances anti-affine geometry attacking ability.According to investigation, the different hidden algorithm that current published monitor video watermark concealing technology all proposes based on digital image processing techniques, the hiding technology of real-time watermark is realized there are no adopting physical means, the utility model devises a kind of video monitoring apparatus hiding shooting anti-counterfei waterprint in real time for this reason, its watermark hidden method is realized by physical means, and provides corresponding using method and method of detecting watermarks.
Utility model content
The utility model mainly solves the technical problem existing for prior art, provide a kind of video monitoring apparatus hiding shooting anti-counterfei waterprint in real time, its watermark hidden method is realized by physical means, and provides corresponding using method and method of detecting watermarks.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of video monitoring apparatus hiding shooting anti-counterfei waterprint in real time, comprise monitor video imaging optical path and the watermark imaging optical path of right-angled intersection, wherein monitor video imaging optical path is successively by monitoring camera camera lens, optical imaging lens group, light-dividing device and monitoring camera CCD are formed, monitoring camera camera lens adopts general business security lens, specifications and models are not particularly limited, optical imaging lens group is an optics adaptation module, its effect is the image distance extending security lens, the optical image relay of coming in by security lens shooting is imaged onto on the photosurface of monitoring camera CCD, its focus adjustment scope is 21 × 6mm, monitoring site image taking is come in by this optical routing monitoring camera camera lens, then change after image distance through optical imaging lens group and be imaged onto monitoring camera CCD, thus on the photosurface of monitoring camera CCD, produce the optical imagery of monitoring site, watermark imaging optical path is made up of low-power tunable light source, collimating lens, watermark transmissive mask, watermark imaging lens group, light-dividing device and monitoring camera CCD successively, this optical routing low-power tunable light source is luminous, light irradiates watermark transmissive mask after collimating lens collimation, watermark transmissive mask is imaged onto monitoring camera CCD through watermark imaging lens group, thus produces the optical imagery of watermark transmissive mask on the photosurface of monitoring camera CCD.Imaging lens group in two imaging optical paths is all for optical imagery, and its focal length regulates by the fine position of several eyeglasses.Light-dividing device in two imaging optical paths and monitoring camera CCD are the same device that light path shares, be that monitoring camera CCD and low-power tunable light source are powered by power supply, wherein said light-dividing device is arranged on the quadrature position of monitor video imaging optical path and watermark imaging optical path, two-way imaging is merged into a road, makes watermarking images and monitor video image realize non-coherent addition.In described watermark imaging optical path, low-power tunable light source is arranged on the front focal plane of collimating lens, for watermark transmissive mask provides illumination, the position of watermark transmissive mask between collimating lens and watermark imaging lens group is unrestricted relative to the distance of collimating lens, can regulate according to equipment size size, but watermark transmissive mask and monitoring camera CCD must be object-image relations relative to the installation site of watermark imaging lens group, to guarantee that watermark transmissive mask is imaged onto on the photosurface of monitoring camera CCD by watermark imaging lens group, the large I of its imaging is regulated by watermark imaging lens group.
As preferably, describedly provide the low-power tunable light source of illumination to select LED light source for watermark transmissive mask, but be not limited to LED light source, its driving voltage is 1.8 ~ 3.6V, and electric current is 20mA, and colour temperature is 4000 ~ 7000, and brightness is adjustable; Further, describedly provide the low-power tunable light source of illumination to select LED white light source for watermark transmissive mask, but also can select other colors, as blue, green etc.
As preferably, Amici prism selected by described light-dividing device, but is not limited to Amici prism, can also select grating, light splitting eyeglass etc.
As preferably, watermark transmissive mask in video monitoring apparatus is the light transmission piece of approximate white noise original watermark pattern to be concealed formed after double random phase modulation, it is also the image of white noise in the imaging of monitoring camera CCD photosensitive surface, the brightness of its image is regulated by the intensity of low-power tunable light source, its mean flow rate is 15% ~ 25% of monitoring image mean flow rate, so that the watermark after superposition in monitor video image is difficult to be aware, improve the disguise of watermark anti-counterfeiting.The concrete manufacture method of watermark transmissive mask is: original watermark pattern to be concealed is carried out gray processing W (m, n) by (1), produces the gray processing figure of original watermark pattern; (2) generation two phase values are evenly distributed in the random number array between 0 ~ 2 π
with
with this random number array for phase place builds two pure phase bitmaps
with
wherein phase diagram
be called spatial domain random phase figure, phase diagram
be called frequency domain random phase figure; (3) be multiplied by the gray processing figure of original watermark pattern with above-mentioned spatial domain random phase figure and do Fourier transform, obtaining Fourier transform figure
(4) above-mentioned Fourier transform figure be multiplied by frequency domain random phase figure and do inverse Fourier transform, namely
(5) real part getting above-mentioned inverse Fourier transform builds the watermark figure of a new approximate white noise, and this watermark figure is modulated to transmissive spatial light modulator or is molded on transparent film, is made into double random phase modulation watermark transmissive mask.
The using method of the utility model video monitoring apparatus is: first starting power supply is that monitoring camera CCD and low-power tunable light source are powered, regulate the brightness of low-power tunable light source, its mean flow rate is made to be that monitoring camera camera lens leads to 15% ~ 25% of brightness, the light that low-power tunable light source sends irradiates watermark transmissive mask after collimating lens collimation, the photosurface of monitoring camera CCD is imaged onto again through watermark optical lens group and light-dividing device, non-coherent addition is carried out with the monitor video image from monitoring camera camera lens, the video image being concealed with watermark recovery can be obtained.
Use the video image that the utility model video monitoring apparatus obtains, the detection method wherein hiding watermark recovery is: (1) extracts video image frame sequence, the digital image sequence arranged in chronological order, if coloured image then carries out gray processing process to image; (2) Fourier transform is carried out to above-mentioned video image, and extract the phase place ψ (m, n) of Fourier transform figure, generate pure phase bit function exp{j ψ (m, n) }; (3) above-mentioned pure phase bit function is multiplied by frequency domain random phase figure, namely
(4) right
do inverse Fourier transform, delivery is the watermark recovery hidden in video image, namely
The utility model employing physical means realizes captured in real-time anti-counterfei waterprint and is hidden in monitor video, the utility model can improve antifalsification and the reliability of monitor video whereby, and then the public credibility of monitor video is guaranteed from technical standpoint, compare to and traditional realize based on Digital Image Processing the method that watermark hides, be more prone to realize, be conducive to reducing system cost.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the utility model video monitoring apparatus.
In figure, 1-low-power tunable light source, 2-collimating lens, 3-watermark transmissive mask, 4-watermark imaging lens group, 5-light-dividing device, 6-optical imaging lens group, 7-monitoring camera camera lens, 8-monitoring camera CCD, 9-power supply.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: referring to Fig. 1, the utility model comprises monitor video imaging optical path and the watermark imaging optical path of right-angled intersection, wherein monitor video imaging optical path is successively by monitoring camera camera lens, optical imaging lens group, light-dividing device and monitoring camera CCD are formed, monitoring camera camera lens adopts general business security lens, specifications and models are not particularly limited, optical imaging lens group is an optics adaptation module, its effect is the image distance extending security lens, the optical image relay of coming in by security lens shooting is imaged onto on the photosurface of monitoring camera CCD, its focus adjustment scope is 21 × 6mm, monitoring site image taking is come in by this optical routing monitoring camera camera lens, then change after image distance through optical imaging lens group and be imaged onto monitoring camera CCD, thus on the photosurface of monitoring camera CCD, produce the optical imagery of monitoring site, watermark imaging optical path is made up of low-power tunable light source, collimating lens, watermark transmissive mask, watermark imaging lens group, light-dividing device and monitoring camera CCD successively, this optical routing low-power tunable light source is luminous, light irradiates watermark transmissive mask after collimating lens collimation, watermark transmissive mask is imaged onto monitoring camera CCD through watermark imaging lens group, thus produces the optical imagery of watermark transmissive mask on the photosurface of monitoring camera CCD.Imaging lens group in two imaging optical paths is all for optical imagery, and its focal length regulates by the fine position of several eyeglasses.Light-dividing device in two imaging optical paths and monitoring camera CCD are the same device that light path shares, be that monitoring camera CCD and low-power tunable light source are powered by power supply, wherein said light-dividing device is arranged on the quadrature position of monitor video imaging optical path and watermark imaging optical path, two-way imaging is merged into a road, makes watermarking images and monitor video image realize non-coherent addition.In described watermark imaging optical path, low-power tunable light source is arranged on the front focal plane of collimating lens, for watermark transmissive mask provides illumination, the position of watermark transmissive mask between collimating lens and watermark imaging lens group is unrestricted relative to the distance of collimating lens, can regulate according to equipment size size, but watermark transmissive mask and monitoring camera CCD must be object-image relations relative to the installation site of watermark imaging lens group, to guarantee that watermark transmissive mask is imaged onto on the photosurface of monitoring camera CCD by watermark imaging lens group, the large I of its imaging is regulated by watermark imaging lens group.Describedly the low-power tunable light source of illumination is provided to select LED light source for watermark transmissive mask, but be not limited to LED light source, preferentially select LED white light source, but also can select other colors, as blue, green etc., its driving voltage is 1.8 ~ 3.6V, and electric current is 20mA, colour temperature is 4000 ~ 7000, and brightness is adjustable.Amici prism selected by described light-dividing device, but is not limited to Amici prism, can also select grating, light splitting eyeglass etc.
Watermark transmissive mask in video monitoring apparatus is the light transmission piece of approximate white noise original watermark pattern to be concealed formed after double random phase modulation, it is also the image of white noise in the imaging of monitoring camera CCD photosensitive surface, the brightness of its image is regulated by the intensity of low-power tunable light source, its mean flow rate is 15% ~ 25% of monitoring image mean flow rate, so that the watermark after superposition in monitor video image is difficult to be aware, improve the disguise of watermark anti-counterfeiting.The concrete manufacture method of watermark transmissive mask is: original watermark pattern to be concealed is carried out gray processing W (m, n) by (1), produces the gray processing figure of original watermark pattern; (2) generation two phase values are evenly distributed in the random number array between 0 ~ 2 π
with
with this random number array for phase place builds two pure phase bitmaps
wherein phase diagram
be called spatial domain random phase figure, phase diagram
be called frequency domain random phase figure; (3) be multiplied by the gray processing figure of original watermark pattern with above-mentioned spatial domain random phase figure and do Fourier transform, obtaining Fourier transform figure
(4) above-mentioned Fourier transform figure be multiplied by frequency domain random phase figure and do inverse Fourier transform, namely
(5) real part getting above-mentioned inverse Fourier transform builds the watermark figure of a new approximate white noise, and this watermark figure is modulated to transmissive spatial light modulator or is molded on transparent film, is made into double random phase modulation watermark transmissive mask.
The using method of the utility model video monitoring apparatus is: first starting power supply is that monitoring camera CCD and low-power tunable light source are powered, regulate the brightness of low-power tunable light source, its mean flow rate is made to be that monitoring camera camera lens leads to 15% ~ 25% of brightness, the light that low-power tunable light source sends irradiates watermark transmissive mask after collimating lens collimation, the photosurface of monitoring camera CCD is imaged onto again through watermark optical lens group and light-dividing device, non-coherent addition is carried out with the monitor video image from monitoring camera camera lens, the video image being concealed with watermark recovery can be obtained.
Use the video image that the utility model video monitoring apparatus obtains, the detection method wherein hiding watermark recovery is: (1) extracts video image frame sequence, the digital image sequence arranged in chronological order, if coloured image then carries out gray processing process to image; (2) Fourier transform is carried out to above-mentioned video image, and extract the phase place ψ (m, n) of Fourier transform figure, generate pure phase bit function exp{j ψ (m, n) }; (3) above-mentioned pure phase bit function is multiplied by frequency domain random phase figure, namely
(4) right
do inverse Fourier transform, delivery is the watermark recovery hidden in video image, namely
The utility model employing physical means realizes captured in real-time anti-counterfei waterprint and is hidden in monitor video, the utility model can improve antifalsification and the reliability of monitor video whereby, and then the public credibility of monitor video is guaranteed from technical standpoint, compare to and traditional realize based on Digital Image Processing the method that watermark hides, be more prone to realize, be conducive to reducing system cost.
Finally, it should be pointed out that above embodiment is only the more representational example of the utility model.Obviously, the technical solution of the utility model is not limited to above-described embodiment, can also have many distortion.All distortion that those of ordinary skill in the art can directly derive from content disclosed in the utility model or associate, all should think protection range of the present utility model.
Claims (4)
1. hide the video monitoring apparatus of shooting anti-counterfei waterprint in real time for one kind, it is characterized in that described video monitoring apparatus comprises monitor video imaging optical path and the watermark imaging optical path of right-angled intersection, monitor video imaging optical path is successively by monitoring camera camera lens, optical imaging lens group, light-dividing device and monitoring camera CCD are formed, watermark imaging optical path is successively by low-power tunable light source, collimating lens, watermark transmissive mask, watermark imaging lens group, light-dividing device and monitoring camera CCD are formed, light-dividing device in two imaging optical paths and monitoring camera CCD are the same device that light path shares, be that monitoring camera CCD and low-power tunable light source are powered by power supply, wherein said light-dividing device is arranged on the quadrature position of monitor video imaging optical path and watermark imaging optical path, two-way imaging is merged into a road, watermarking images and monitor video image is made to realize non-coherent addition, in described watermark imaging optical path, low-power tunable light source is arranged on the front focal plane of collimating lens, for watermark transmissive mask provides illumination, the position of watermark transmissive mask between collimating lens and watermark imaging lens group is unrestricted relative to the distance of collimating lens, can regulate according to equipment size size, but watermark transmissive mask and monitoring camera CCD must be object-image relations relative to the installation site of watermark imaging lens group, to guarantee that watermark transmissive mask is imaged onto the photosensitive surface of monitoring camera CCD by watermark imaging lens group, the large I of its imaging is regulated by watermark imaging lens group.
2. a kind of video monitoring apparatus hiding in real time shooting anti-counterfei waterprint according to claim 1, for watermark transmissive mask provides the low-power tunable light source of illumination to select LED light source described in it is characterized in that, its driving voltage is 1.8 ~ 3.6V, electric current is 20mA, colour temperature is 4000 ~ 7000, and brightness is adjustable.
3. a kind of video monitoring apparatus hiding shooting anti-counterfei waterprint in real time according to claim 1 or 2, for watermark transmissive mask provides the low-power tunable light source of illumination to select LED white light source described in it is characterized in that.
4. a kind of video monitoring apparatus hiding in real time shooting anti-counterfei waterprint according to claim 1, is characterized in that Amici prism selected by described light-dividing device.
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| CN201520529050.9U CN205179222U (en) | 2015-01-04 | 2015-07-21 | Real -time video monitoring device of shooing anti -fake watermark of hiding |
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| CN2015100028336 | 2015-01-04 | ||
| CN201520529050.9U CN205179222U (en) | 2015-01-04 | 2015-07-21 | Real -time video monitoring device of shooing anti -fake watermark of hiding |
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| CN201520529050.9U Withdrawn - After Issue CN205179222U (en) | 2015-01-04 | 2015-07-21 | Real -time video monitoring device of shooing anti -fake watermark of hiding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049805A (en) * | 2015-01-04 | 2015-11-11 | 浙江工大盈码科技发展有限公司 | Video monitoring device capable of hiding anti-counterfeiting shooting watermark in real time |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105611232B (en) * | 2015-12-17 | 2019-07-12 | 北京旷视科技有限公司 | One camera multi-path monitoring method and system |
| CN110517179B (en) * | 2019-07-15 | 2023-06-16 | 贝壳技术有限公司 | VR 3D model watermark adding method and system |
| CN111161259B (en) * | 2019-12-31 | 2021-06-22 | 支付宝(杭州)信息技术有限公司 | Method and device for detecting whether image is tampered or not and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001298707A (en) * | 2000-04-12 | 2001-10-26 | Hitachi Ltd | Image output device and method |
| CN1507279A (en) * | 2002-12-11 | 2004-06-23 | 中国科学院计算技术研究所 | Video acquisition method adopting digital watermark technology |
| CN102142130B (en) * | 2011-04-11 | 2012-08-29 | 西安电子科技大学 | Watermark embedding method and device based on wavelet-domain enhanced image masks |
| CN103997652B (en) * | 2014-06-12 | 2017-06-20 | 北京奇艺世纪科技有限公司 | A kind of video watermark embedding grammar and device |
| CN105049805B (en) * | 2015-01-04 | 2018-04-13 | 浙江工大盈码科技发展有限公司 | A kind of video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time |
-
2015
- 2015-07-21 CN CN201510429980.1A patent/CN105049805B/en not_active Expired - Fee Related
- 2015-07-21 CN CN201520529050.9U patent/CN205179222U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049805A (en) * | 2015-01-04 | 2015-11-11 | 浙江工大盈码科技发展有限公司 | Video monitoring device capable of hiding anti-counterfeiting shooting watermark in real time |
| CN105049805B (en) * | 2015-01-04 | 2018-04-13 | 浙江工大盈码科技发展有限公司 | A kind of video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time |
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| Publication number | Publication date |
|---|---|
| CN105049805B (en) | 2018-04-13 |
| CN105049805A (en) | 2015-11-11 |
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