CN105049805B - A kind of video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time - Google Patents
A kind of video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time Download PDFInfo
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Abstract
A kind of video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time, 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, collimation lens, watermark transmissive mask, watermark imaging lens group, light-dividing device and monitoring camera CCD are formed, light-dividing device and monitoring camera CCD in two imaging optical paths are the same device that light path shares, wherein described light-dividing device is installed on the quadrature position of monitor video imaging optical path and watermark imaging optical path, two-way imaging is merged into all the way, watermarking images are made to realize non-coherent addition with monitor video image.The present invention realizes that captured in real-time anti-counterfei waterprint is hidden in monitor video using physical means, the present invention can improve the antifalsification and reliability of monitor video whereby, and then the public credibility of monitor video is ensured from technical standpoint, it is more prone to realize, advantageously reduces system cost.
Description
Technical field
The invention belongs to the field of anti-counterfeit technology of video monitoring, is specifically related to a kind of hide in real time and shoots anti-counterfei waterprint
Video monitoring apparatus, and its corresponding application method and method of detecting watermarks.
Background technology
Video monitoring is the important component of safety and protection system, and traditional monitoring system generally includes front end shooting
Machine, transmission cable and video monitoring platform, video camera can be divided into network digital camera and analog video camera, as head end video
The collection of picture signal.Monitoring system is a kind of stronger integrated system of prevention ability, its monitor video with directly perceived, accurate and
When and the information content enrich and be widely used in many occasions.In recent years, with computer, network, image procossing and transmission skill
The rapid development of art, Video Supervision Technique there has also been significant progress.Video monitoring makes full use of characteristics of the multimedia, with reference to real-time
The technologies such as seizure, HD recording, play crime powerful deterrent force, more can effectively prevent crime, and real-time tracking is each
A monitoring site, rapid reflection ability can effectively fight crime.Surveillance video is often demonstrate,proved as most important law
According to, for refuting the denial and sophistry of criminal, but it is most important in video recording partially due to being deleted the case triggered by malice
Also it is commonplace.
The application of video monitoring is very extensive, community security, shopping square, highway, bus and large-scale celebrating
Allusion quotation etc., and the accuracy and reliability of surveillance video is made and most accurately judges to be particularly important.Since monitoring regards
Frequency uses extensively, and can be used as most reliable legal argument, and criminal, will be all originally by deleting the data on hard disk
Monitor video file is all destroyed and denied, but the loss of these mass data is certain to expose very big weak point, involves out
A collection of related personnel, that criminal or unable to escape the net of justice.Some criminals then use more brilliant means at present, will monitor
Key component frame deletion or replacement in video, this just brings very big to the accuracy and reliability for judging surveillance video
Trouble.
In order to improve the anti-counterfeiting performance of monitor video, Chinese patent CN104168484A discloses a kind of view-based access control model and pays attention to
The video watermark process of mechanism, the non-significant region DCT domain insertion binary system of vision of invention selection MPEG-2 key frame of video
Watermark information, realizes the purpose of video anti-counterfeiting and infringement.Chinese patent CN103997652A discloses a kind of video watermark insertion
Method and device, binary data and default coding rule of the invention according to watermark information to be embedded, determines to be embedded
Coding number of blocks needed for watermark information and each encoding block is carried out to encode required motion vector, and according to identified
Number of blocks and motion vector are encoded, it is embedded with each of embedded watermark information to being needed in target video frame from start code BOB(beginning of block)
A encoding block is encoded, with the embedded watermark information in target video frame.Chinese patent CN102892048A discloses one kind
The video watermark method for anti-counterfeit of resist geometric attacks, the invention is by extracting the maximum stable extremal region MSER of video frame, to intending
The elliptic region closed out is screened, and elimination region is overlapping, is chosen and is used for final watermark insertion elliptic region, then by repairing
Change the vertical low-frequency band of horizontal high-frequent (HL) and the vertical high frequency band of horizontal low frequencies (LH) of wavelet conversion coefficient, to the feature selected
Region carries out watermark insertion, enhances anti-affine geometry attacking ability.According to investigation, current published monitor video watermark is hidden
The different hidden algorithms that technology is all based on digital image processing techniques and proposes, there are no and realize Real-time Water using physical means
The hiding technology of print, of the invention for this to devise a kind of video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time, its watermark is hidden
Tibetan method is realized by physical means, and provides corresponding application method and method of detecting watermarks.
The content of the invention
The present invention mainly solves the technical problem present in the prior art, there is provided a kind of to hide the false proof water of shooting in real time
The video monitoring apparatus of print, its watermark hidden method is realized by physical means, and provides corresponding application method
And method of detecting watermarks.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals：It is a kind of to hide shooting in real time
The video monitoring apparatus of anti-counterfei waterprint, includes the monitor video imaging optical path and watermark imaging optical path of right-angled intersection, wherein monitoring
Video imaging light path is made of monitoring camera camera lens, optical imaging lens group, light-dividing device and monitoring camera CCD successively, monitoring
Pick-up lens uses general business security lens, and specifications and models are not particularly limited, and optical imaging lens group is one
Optics adaptation module, it is the image distance for extending security lens that it, which is acted on, i.e., is imaged the optical image relay that security lens shooting is come in
Onto the photosurface of monitoring camera CCD, its focus adjustment scope is 21 × 6mm, which will monitor existing
Field picture shooting is come in, and then monitoring camera CCD is imaged onto after optical imaging lens group changes image distance, so that in monitoring camera
The optical imagery of monitoring site is produced on the photosurface of CCD；Watermark imaging optical path is saturating by low-power tunable light source, collimation successively
Mirror, watermark transmissive mask, watermark imaging lens group, light-dividing device and monitoring camera CCD are formed, the optical routing low-power tunable optical
Source shines, and watermark transmissive mask is irradiated after the collimated collimated of light, and watermark transmissive mask is formed through watermark imaging len
As arriving monitoring camera CCD, so as to produce the optical imagery of watermark transmissive mask on the photosurface of monitoring camera CCD.Two into
As the imaging lens group in light path contributes to optical imagery, its focal length can be adjusted by the fine position of several eyeglasses
Section.Light-dividing device and monitoring camera CCD in two imaging optical paths are the same device that light path shares, and are monitoring camera by power supply
CCD and the power supply of low-power tunable light source, wherein the light-dividing device is installed on monitor video imaging optical path and watermark imaging optical path
Quadrature position, two-way imaging is merged into all the way, watermarking images and monitor video image is realized non-coherent addition.The water
Print in imaging optical path, low-power tunable light source is installed on the front focal plane of collimation lens, and illumination, water are provided for watermark transmissive mask
It is unrestricted relative to the distance of collimation lens to print position of the transmissive mask between collimation lens and watermark imaging lens group, can
It is adjusted according to equipment size size, but peace of the watermark transmissive mask with monitoring camera CCD relative to watermark imaging lens group
Holding position must be object-image relation, and the sense of monitoring camera CCD is imaged onto to ensure watermark transmissive mask by watermark imaging lens group
In smooth surface, it is imaged big I and is adjusted by watermark imaging lens group.
Preferably, the low-power tunable light source that illumination is provided for watermark transmissive mask selects LED light source, but it is unlimited
In LED light source, its driving voltage is 1.8~3.6V, and electric current 20mA, colour temperature is 4000~7000K, and brightness is adjustable；Further
Ground, the low-power tunable light source that illumination is provided for watermark transmissive mask selects LED white light source, but can also select other
Color, such as blueness, green.
Preferably, the light-dividing device selects Amici prism, but Amici prism is not limited to, grating can also be selected, divided
Light microscopic piece etc..
Preferably, the watermark transmissive mask in video monitoring apparatus is through double random by original watermark pattern to be concealed
The light transmission piece of the approximate white noise formed after phase-modulation, it is also white noise in the imaging of monitoring camera CCD photosensitive surfaces
Image, the brightness of its image are adjusted by the intensity of low-power tunable light source, its average brightness is that monitoring image is average bright
The 15%~25% of degree, in order to which the watermark in monitor video image after being superimposed is difficult to be aware to improving the hidden of watermark anti-counterfeiting
Covering property.The specific production method of watermark transmissive mask is：(1) original watermark pattern to be concealed is subjected to gray processing W (m, n), made
Go out the gray processing figure of original watermark pattern；(2) the random number array that two phase values are evenly distributed between 0~2 π is generated
WithTwo pure phase bitmaps are built by phase of the random number arrayWithWherein
Phase diagramReferred to as spatial domain random phase figure, phase diagramReferred to as frequency domain random phase figure；(3)
The gray processing figure of original watermark pattern is multiplied by with above-mentioned spatial domain random phase figure and does Fourier transformation, up to Fourier transformation figure(4) above-mentioned Fourier transformation figure is multiplied by frequency domain random phase figure and to be Fourier inverse
Conversion, i.e.,(5) real part of above-mentioned inverse Fourier transform is taken
The watermark figure of one new approximate white noise of structure, and the watermark figure is modulated to transmissive spatial light modulator or is molded into transparent
On film, double random phase modulation watermark transmissive mask is fabricated to.
The application method of video monitoring apparatus of the present invention is：Startup power supply is that monitoring camera CCD and low-power are adjustable first
Light source power supply, adjust low-power tunable light source brightness, make its average brightness be monitoring camera camera lens thang-kng brightness 15%~
25%, watermark transmissive mask is irradiated after the collimated collimated of light that low-power tunable light source is sent, then through watermark optical lens
Group and light-dividing device are imaged onto the photosurface of monitoring camera CCD, are carried out with the monitor video image from monitoring camera camera lens non-
Coherent superposition, you can obtain being concealed with the video image of watermark recovery.
The video image obtained using video monitoring apparatus of the present invention, wherein the detection method for hiding watermark recovery is：(1) carry
Video image frame sequence is taken, the digital image sequence being sequentially arranged, if coloured image then carries out gray processing to image
Processing；(2) Fourier transformation is carried out to above-mentioned video image, and extracts the phase ψ (m, n) of Fourier transformation figure, generation pure phase position letter
Number exp { j ψ (m, n) }；(3) above-mentioned pure phase bit function is multiplied by frequency domain random phase figure, i.e.,
(4) it is rightInverse Fourier transform is done, modulus is the watermark recovery hidden in video image,
Namely
The present invention realizes that captured in real-time anti-counterfei waterprint is hidden in monitor video using physical means, and the present invention can carry whereby
The antifalsification and reliability of high monitor video, and then ensure from technical standpoint the public credibility of monitor video, compared to traditional base
Method that watermark is hidden is realized in Digital Image Processing, is more prone to realize, is advantageously reduced system cost.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of video monitoring apparatus of the present invention；
Fig. 2 is a kind of schematic diagram of present invention original watermark pattern to be concealed；
Fig. 3 is a kind of schematic diagram of random phase figure in spatial domain of the present invention；
Fig. 4 is a kind of schematic diagram of frequency domain random phase figure of the present invention；
Fig. 5 is the approximate whitening watermark figure that the present invention is formed after double random phase is modulated；
Fig. 6 is a kind of schematic diagram that the present invention is sequentially arranged digital image sequence；
Fig. 7 is a kind of schematic diagram that watermark recovery is hidden in Fig. 6 that the present invention detects.
In figure, 1- low-power tunable light sources, 2- collimation lenses, 3- watermark transmissive masks, 4- watermark imaging lens groups, 5- points
Electro-optical device, 6- optical imaging lens groups, 7- monitoring camera camera lenses, 8- monitoring cameras CCD, 9- power supply.
Embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment：Referring to Fig. 1, the present invention includes the monitor video imaging optical path and watermark imaging optical path of right-angled intersection, its
Middle monitor video imaging optical path is successively by monitoring camera camera lens, optical imaging lens group, light-dividing device and monitoring camera CCD structures
Into monitoring camera camera lens uses general business security lens, and specifications and models are not particularly limited, optical imaging lens group
It is an optics adaptation module, it is the image distance for extending security lens that it, which is acted on, i.e., connects the optical image that security lens shooting is come in
Power is imaged onto on the photosurface of monitoring camera CCD, its focus adjustment scope is 21 × 6mm, which will
Monitoring site image taking is come in, and then monitoring camera CCD is imaged onto after optical imaging lens group changes image distance, so as to supervise
Control the optical imagery that monitoring site is produced on the photosurface of camera CCD；Watermark imaging optical path is successively by low-power tunable light source, standard
Straight lens, watermark transmissive mask, watermark imaging lens group, light-dividing device and monitoring camera CCD are formed, which can
Light source luminescent is adjusted, watermark transmissive mask is irradiated after the collimated collimated of light, by watermark transmissive mask through watermark imaging len
Group is imaged onto monitoring camera CCD, so as to produce the optical imagery of watermark transmissive mask on the photosurface of monitoring camera CCD.Two
Imaging lens group in a imaging optical path contributes to optical imagery, its focal length can be carried out by the fine position of several eyeglasses
Adjust.Light-dividing device and monitoring camera CCD in two imaging optical paths are the same device that light path shares, and are monitoring phase by power supply
Machine CCD and the power supply of low-power tunable light source, wherein the light-dividing device is installed on monitor video imaging optical path and watermark imaging
The quadrature position on road, two-way imaging is merged into all the way, watermarking images is realized non-coherent addition with monitor video image.It is described
In watermark imaging optical path, low-power tunable light source is installed on the front focal plane of collimation lens, and illumination is provided for watermark transmissive mask,
Position of the watermark transmissive mask between collimation lens and watermark imaging lens group is unrestricted relative to the distance of collimation lens,
It can be adjusted according to equipment size size, but watermark transmissive mask and monitoring camera CCD are relative to watermark imaging lens group
Installation site must be object-image relation, to ensure that watermark transmissive mask is imaged onto monitoring camera CCD's by watermark imaging lens group
On photosurface, it is imaged big I and is adjusted by watermark imaging lens group.It is described to provide the low of illumination for watermark transmissive mask
Power adjustable light source selects LED light source, but is not limited to LED light source, preferentially selects LED white light source, but can also select other
Color, such as blueness, green, its driving voltage is 1.8~3.6V, and electric current 20mA, colour temperature is 4000~7000K, and brightness can
Adjust.The light-dividing device selects Amici prism, but is not limited to Amici prism, can also select grating, light splitting eyeglass etc..
Watermark transmissive mask in video monitoring apparatus is to modulate original watermark pattern to be concealed through double random phase
The light transmission piece of the approximate white noise formed afterwards, it is in the image that the imaging of monitoring camera CCD photosensitive surfaces is also white noise, its figure
The brightness of picture is adjusted by the intensity of low-power tunable light source, its average brightness be monitoring image average brightness 15%~
25%, in order to which the watermark in monitor video image after being superimposed is difficult to be aware to improving the concealment of watermark anti-counterfeiting.Watermark is saturating
The specific production method for penetrating mask is：(1) original watermark pattern to be concealed is subjected to gray processing W (m, n), produces initial condition
The gray processing figure being patterned；(2) the random number array that two phase values are evenly distributed between 0~2 π is generatedWithTwo pure phase bitmaps are built by phase of the random number arrayWithWherein phase
BitmapReferred to as spatial domain random phase figure, phase diagramReferred to as frequency domain random phase figure；(3)
The gray processing figure of original watermark pattern is multiplied by with above-mentioned spatial domain random phase figure and does Fourier transformation, up to Fourier transformation figure(4) above-mentioned Fourier transformation figure is multiplied by frequency domain random phase figure and to be Fourier inverse
Conversion, i.e.,(5) real part of above-mentioned inverse Fourier transform is taken
The watermark figure of one new approximate white noise of structure, and the watermark figure is modulated to transmissive spatial light modulator or is molded into transparent
On film, double random phase modulation watermark transmissive mask is fabricated to.
The application method of video monitoring apparatus of the present invention is：Startup power supply is that monitoring camera CCD and low-power are adjustable first
Light source power supply, adjust low-power tunable light source brightness, make its average brightness be monitoring camera camera lens thang-kng brightness 15%~
25%, watermark transmissive mask is irradiated after the collimated collimated of light that low-power tunable light source is sent, then through watermark optical lens
Group and light-dividing device are imaged onto the photosurface of monitoring camera CCD, are carried out with the monitor video image from monitoring camera camera lens non-
Coherent superposition, you can obtain being concealed with the video image of watermark recovery.
The video image obtained using video monitoring apparatus of the present invention, wherein the detection method for hiding watermark recovery is：(1) carry
Video image frame sequence is taken, the digital image sequence being sequentially arranged, if coloured image then carries out gray processing to image
Processing；(2) Fourier transformation is carried out to above-mentioned video image, and extracts the phase ψ (m, n) of Fourier transformation figure, generation pure phase position letter
Number exp { j ψ (m, n) }；(3) above-mentioned pure phase bit function is multiplied by frequency domain random phase figure, i.e.,
(4) it is rightInverse Fourier transform is done, modulus is the watermark recovery hidden in video image,
Namely
The present invention realizes that captured in real-time anti-counterfei waterprint is hidden in monitor video using physical means, and the present invention can carry whereby
The antifalsification and reliability of high monitor video, and then ensure from technical standpoint the public credibility of monitor video, compared to traditional base
Method that watermark is hidden is realized in Digital Image Processing, is more prone to realize, is advantageously reduced system cost.
Finally it is pointed out that above example is only the more representational example of the present invention.Obviously, technology of the invention
Scheme is not limited to above-described embodiment, can also there is many deformations.Those of ordinary skill in the art can be from disclosed by the invention
All deformations that content is directly exported or associated, are considered as protection scope of the present invention.
Claims (7)
1. a kind of video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time, it is characterised in that the video monitoring apparatus includes ten
The monitor video imaging optical path and watermark imaging optical path that word intersects, monitor video imaging optical path is successively by monitoring camera camera lens, light
Learn imaging lens group, light-dividing device and monitoring camera CCD to form, watermark imaging optical path is successively by low-power tunable light source, collimation
Lens, watermark transmissive mask, watermark imaging lens group, light-dividing device and monitoring camera CCD are formed, point in two imaging optical paths
Electro-optical device and monitoring camera CCD are the same device that light path shares, and are supplied by power supply for monitoring camera CCD and low-power tunable light source
Electricity, wherein the light-dividing device is installed on the quadrature position of monitor video imaging optical path and watermark imaging optical path, two-way is imaged
It is merged into all the way, watermarking images is realized non-coherent addition with monitor video image；In the watermark imaging optical path, low-power can
Light modulation source is installed on the front focal plane of collimation lens, provides illumination for watermark transmissive mask, watermark transmissive mask is in collimation lens
Position between watermark imaging lens group is unrestricted relative to the distance of collimation lens, can be carried out according to equipment size size
Adjust, but watermark transmissive mask must be object-image relation relative to the installation site of watermark imaging lens group with monitoring camera CCD,
The photosensitive surface of monitoring camera CCD is imaged onto to ensure watermark transmissive mask by watermark imaging lens group, its be imaged big I by
Watermark imaging lens group is adjusted.
2. a kind of video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time according to claim 1, it is characterised in that described
The low-power tunable light source that illumination is provided for watermark transmissive mask selects LED light source, its driving voltage is 1.8~3.6V, electric current
For 20mA, colour temperature is 4000~7000K, and brightness is adjustable.
3. a kind of video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time according to claim 2, it is characterised in that described
The low-power tunable light source that illumination is provided for watermark transmissive mask selects LED white light source.
4. a kind of video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time according to claim 1, it is characterised in that described
Light-dividing device selects Amici prism.
A kind of 5. video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time according to claim 1, it is characterised in that the watermark
Transmissive mask is the light transmission piece for the approximate white noise for forming original watermark pattern to be concealed after double random phase is modulated, its
The imaging of monitoring camera CCD photosensitive surfaces is also the image of white noise, the brightness of its image by the intensity of low-power tunable light source into
Row is adjusted, its average brightness is the 15%~25% of monitoring image average brightness, and specific production method is：(1) will be to be concealed original
Watermark recovery carries out gray processing W (m, n), produces the gray processing figure of original watermark pattern；(2) two phase values are generated to be evenly distributed in
Random number array between 0~2 πWithTwo pure phase bitmaps are built by phase of the random number arrayWithWherein phase diagramReferred to as spatial domain random phase figure, phase diagramReferred to as frequency domain random phase figure；(3) the gray processing figure of original watermark pattern is multiplied by with above-mentioned spatial domain random phase figure
And Fourier transformation is done, up to Fourier transformation figure(4) above-mentioned Fourier transformation figure is multiplied
With frequency domain random phase figure and inverse Fourier transform is done, i.e.,
(5) take the real part of above-mentioned inverse Fourier transform to build the watermark figure of a new approximate white noise, and the watermark figure is modulated to
Transmissive spatial light modulator is molded on transparent film, is fabricated to double random phase modulation watermark transmissive mask.
It is 6. a kind of according to the video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time of claim 1 or 2 or 4 or 5, its feature
The application method for being the video monitoring apparatus is：Startup power supply supplies for monitoring camera CCD and low-power tunable light source first
Electricity, adjust low-power tunable light source brightness, make its average brightness be monitoring camera camera lens thang-kng brightness 15%~25%, it is low
Watermark transmissive mask is irradiated after the collimated collimated of light that power adjustable light source is sent, then through watermark optical lens group and light splitting
Device is imaged onto the photosurface of monitoring camera CCD, and non-coherent addition is carried out with the monitor video image from monitoring camera camera lens,
It can obtain being concealed with the video image of watermark recovery.
A kind of 7. video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time according to claim 6, it is characterised in that the video
The detection method of hiding watermark recovery is in image：(1) video image frame sequence, the digitized map being sequentially arranged are extracted
As sequence, if coloured image then carries out gray processing processing to image；(2) Fourier transformation is carried out to above-mentioned video image, and carried
Take the phase ψ (m, n) of Fourier transformation figure, generation pure phase bit function exp { j ψ (m, n) }；(3) above-mentioned pure phase bit function is multiplied by frequency
Domain random phase figure, i.e.,(4) it is rightIt is inverse to be Fourier
Conversion, modulus are the watermark recovery hidden in video image, that is,
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| CN201510429980.1A CN105049805B (en) | 2015-01-04 | 2015-07-21 | A kind of video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time |
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| CN201510002833 | 2015-01-04 | ||
| CN2015100028336 | 2015-01-04 | ||
| CN201510429980.1A CN105049805B (en) | 2015-01-04 | 2015-07-21 | A kind of video monitoring apparatus for hiding shooting anti-counterfei waterprint in real time |
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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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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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| 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 |
| CN102142130A (en) * | 2011-04-11 | 2011-08-03 | 西安电子科技大学 | Watermark embedding method and device based on wavelet-domain enhanced image masks |
| CN103997652A (en) * | 2014-06-12 | 2014-08-20 | 北京奇艺世纪科技有限公司 | Video watermark embedding method and device |
| CN205179222U (en) * | 2015-01-04 | 2016-04-20 | 浙江工大盈码科技发展有限公司 | Real -time video monitoring device of shooing anti -fake watermark of hiding |
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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
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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 |
| CN102142130A (en) * | 2011-04-11 | 2011-08-03 | 西安电子科技大学 | Watermark embedding method and device based on wavelet-domain enhanced image masks |
| CN103997652A (en) * | 2014-06-12 | 2014-08-20 | 北京奇艺世纪科技有限公司 | Video watermark embedding method and device |
| CN205179222U (en) * | 2015-01-04 | 2016-04-20 | 浙江工大盈码科技发展有限公司 | Real -time video monitoring device of shooing anti -fake watermark of hiding |
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| CN105049805A (en) | 2015-11-11 |
| CN205179222U (en) | 2016-04-20 |
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