CN101282457B - False proof detection method for real time monitoring videosignal - Google Patents
False proof detection method for real time monitoring videosignal Download PDFInfo
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Abstract
The invention discloses an anti-fake detection method for real-time video signal monitoring, which is characterized in that: a cipherkey is provided, time synchronization is performed between the detecting end and the transmitting end, one image is selected from the preset image library to create anti-fake logo according to time signals, one factor of the brightness, size, angle and color of each point or random combination of the factors are adjusted by the cipherkey, and overlay position of the logo is computed; image having same shape and size with the logo is extracted from the received video signal according to the computed position, matching detection is performed to the two images, true-false of the video signal is judged by using statistical method according to the matching degree. The anti-fake detection method for real-time video signal monitoring of the invention can detecting invasion of video motoring network, replacement, time-delay or local modification of the video signal, which serves an anti-fake function; processing work amount is small, implementation cost is low.
Description
The application is for dividing an application, and the applying date of original application is on February 6th, 2005, and application number is 200510038321.1, and denomination of invention is the badge anti-forge method that is used for real-time video monitoring.
Technical field
The present invention relates to vision signal and handle, be specifically related to a kind of reliability that is used to prove real-time video, realize the false proof method of real-time video, especially detect the false-proof detection method of this vision signal.
Background technology
Along with popularizing of video monitoring, how to verify the reliability of real time video signals, false proof to video network enforcement, become the problem that people pay close attention to.
In the security protection in sub-district and some important places, usually use camera and cable to constitute video monitoring net, be directed to this, someone will in video network to insert one section pre-prepd vision signal and confuse security personnel by means such as circuit switchings, utilize the time difference to be engaged in some unlawful activities, how preventing the generation of this situation, is the problem that people need solve.
The method that comparatively generally adopts is that detection video signal interruption and a plurality of camera are verified mutually at present.It is multiple that but the reason of video signal interruption has, a kind of reason of discovery video signal interruption can not be got rid of other reasons, vision signal is recovered and checking can not guarantee that but the whole video network does not have other access points later, thereby causes inserting in the forgery of special time.The mutual proof scheme of a plurality of cameras has increased the cost of equipment and wiring, and the monitor staff's that places one's entire reliance upon attentiveness and vigilance, and under the situation that the vision signal of a plurality of cameras of correspondence is forged simultaneously, artificial observation can not pinpointed the problems.
On the other hand, in remote monitoring, use repeatedly modulus, digital-to-analogue conversion, made this anomaly of video signal interruption become frequent contingent technical failure; Part remote monitoring occasion has more increased by the spoofed IP address and has implemented the possibility that video is distorted, forged also by the public network transmissions signal.These have all further increased the risk in the video signal transmission.
For overcoming the above problems, in remote monitoring, can adopt the method for transmitting or digital video is carried out encrypted transmission by proprietary network at present.
Scheme by the proprietary network transmission is exactly the extension of subzone network in essence, active equipments such as more signal amplifier, optical transceiver, encoder, decoder have just been increased, but not only increased more access point, the reasons that cause video signal interruption have also been increased more, and, for remote monitoring, this scheme can greatly increase operating cost.
Digital video is carried out the scheme of encrypted transmission, can guarantee that vision signal is not forged after digitlization in the transmission course that is decoded between the analog video signal.Yet, in the digital-to-analogue hybrid system, because only segmentation existence in transmission course of digital signal can not connect two from start to finish, thereby its effect is limited; Have only the employing straight numerical system, could really play a role, and straight numerical system is of a high price.Moreover, in straight numerical system, the vision signal of encrypted transmission, encrypt processing such as signal between the video terminal deciphering no longer can be compressed, decompress(ion) as common vision signal from camera, adjust thereby can't be adapt to the network environment oneself, thus to the requirement of the bandwidth of network, reliability etc. than higher.
Digital watermark is the emphasis of people's research in recent years, it is by carrying out sightless disposed of in its entirety to vision signal, in vision signal or its image, embed certain information, the information that embeds becomes the part of vision signal or its image, even through decipher, encrypt again, operating process such as compression, digital to analog conversion or change file format, also can exist.Playing end, need detect this vision signal or image, comparison is read in embedded watermark, with the origin and the reliability of checking vision signal, and can after distorting, find to distort by detecting.Yet, people are when the exploitation digital watermark technology, all be conceived to processing to entire image, and the invisibility of watermark during image replaying, this has caused the problem of three aspects, and the one, owing to need make overall treatment to each two field picture, workload when making watermark interpolation and detection is very big, must adopt expensive isolated plant to carry out, each receiving terminal all will be equipped with special chip or checkout gear, causes the increase of hardware cost; Simultaneously, the invisible people of making of watermark can't use intuitive judgment, and checkout gear that must configure dedicated detects; Moreover the invisibility of watermark makes the intensity be embedded in the watermark signal in the normal video signal be restricted, and in the complex network of repeatedly encoding in the needs experience, decode, compression, decompress(ion) etc. being handled, watermark signal might be lost.
At a kind of badge anti-forge method (number of patent application 200410065245.9) that is used for compressed video signal of Chinese invention patent application, provided a kind of method for anti-counterfeit of vision signal, it is based on the principle to distortion control, by the distortion factor of accurate relatively transmitting terminal and the same logo in test side, judge whether vision signal was handled midway.For the digital video transmission system that experience is once compressed, decompressed, this scheme can play false proof effect in real time.But this scheme is used in real time, and false proof limitation is, the accurately control of use analog signal transmission or modulus be difficult to to(for) distortion mix the complex environment that maybe needs to experience repeatedly modulus, digital-to-analogue conversion etc., and the antifalse effect of this scheme just can't guarantee.
Summary of the invention
In the original bill application, provide a kind of work of treatment amount little, can extensively be adapted to simulate, numeral or digital-to-analogue hybrid system, can with the naked eye observe roughly and can be with the careful real-time video method for anti-counterfeit that detects of equipment.It both can be after having distorted finds distort by detecting, and can play the effect of threatening with tangible sign again, and prevents the generation of distorting.
The purpose of this invention is to provide a kind of to adopting said method to carry out the detection method of the real-time video after the false proof processing.
In order to realize the false proof of video monitoring, a kind of badge anti-forge method that is used for real-time video monitoring of employing is, a key is provided, and according to described key and time signal, selects a image in the default image library as false proof logo; With described false proof logo according to time signal, in the raw video signal that dynamically is added to; Video signal transmission behind the stack logo is used to playing device, to realize the false proof processing of vision signal.
Wherein, can be before stack, with one of the brightness of described false proof logo, size, angle, all key elements of color or wherein the combination of some key elements adjust according to described key.
When described false proof logo dynamically was added in the raw video signal according to time signal, the position of its stack was according to determining with the information of key and time correlation.
The color value of each point is determined according to the information of key and time correlation in the described false proof logo.
Above, realized the false proof processing of vision signal by the logo pattern of stack dynamic change; Deposited different, the variform default logo image of alternative a lot of features in the described default image library, for example, can be the logo image that indicates the user, cartoon pattern, Chinese character etc., its edge complexity, set background transparent, the distribution of the color of prospect on each pixel, dynamically generate by certain rule, this rule can be one by coordinate, time and key function as independent variable, the size, angle that time and key also will determine logo with and position in video image.When logo is superimposed on vision signal, logo can be superimposed on vision signal the institute important on, also can only be superimposed on the single component; Can be superimposed on the frame, also can be superimposed on the field; Can exist all the time, also can not seem and flicker regularly, thus the possibility that acquisition will be restored by that part of image section that logo hides.
Further technical scheme is provided with at least two overlap-add region, and described false proof logo comes across on the different overlap-add region randomly or controllably.The combination of a plurality of possible colors, size, angle, superposed positions can be arranged at one time, appear at the zones of different (such as being divided into the inconspicuous zone in intermediate host zone (sensitizing range) and corner (insensitive zone)) of image respectively.Thereby can select flexibly to use with false proof needs according to the observation by logo stacking apparatus or observer.Such as a ratio that appears at sensitizing range and insensitive zone can be set, thereby at antifalse effect and monitor between quality and average out.
Further technical scheme in the stack logo, is carried out the interruption detection of vision signal, has no progeny in vision signal takes place, and false proof logo stops to superpose.
For reaching goal of the invention of the present invention, the technical solution used in the present invention is: a kind of false-proof detection method that is used for real time monitoring videosignal, one key is provided, carry out time synchronized between test side and the transmitting terminal, according to time signal, select an image in the default image library to generate false proof logo, the brightness of described false proof logo, size, angle and wherein each point one of all key elements of color or wherein the combination of some key elements adjust according to this key; In the vision signal that receives, according to the position that aforementioned calculation goes out, extract and the image of the same shape of false proof logo with size, these two images are carried out matching detection, according to the degree of matching detection, adopt statistical method to judge the true and false of vision signal.
In the technique scheme, can detect each possible superposed positions simultaneously, when having a position to realize coupling therein, confirm that vision signal is true, as adopting statistical method to judge the foundation of genuine-fake of video signal.Set sensitizing range and insensitive regional ratio during false proof logo for stack, also be set in the weight of diverse location when occurring during the relevant detection statistics.
Further technical scheme is considered time-delay possible in the video transmission process and distortion, when the anti-counterfeiting detecting device initialization, sends a request for test signal by control signal to the logo stacking apparatus and detects the vision signal that receives simultaneously; The logo stacking apparatus receives behind the request for test signal i.e. stack standard testing logo in vision signal, according to control signal with detect the used time difference of standard testing logo, set video transmission delay.
Use the false proof device that is used for real time monitoring videosignal of above-mentioned false proof and detection method, comprise the vision signal input port, the vision signal delivery outlet, broken string outage by-pass switch, A/D converter, D/A converter, video frame memory, default logo memory and false proof logo maker, described vision signal input port is connected to A/D converter through broken string outage by-pass switch, the output of A/D converter and false proof logo maker is connected to D/A converter behind video frame memory, the output of D/A converter is connected to the vision signal delivery outlet, and the by-passing signal of broken string outage by-pass switch directly is communicated to the vision signal delivery outlet.
Further concrete structure is: there is a vision signal input port device outside, a vision signal delivery outlet, and a power port and a mains switch can also have a control signal input port, a control signal delivery outlet.Its internal structure is seen figure one.Mixed video signal is imported from the vision signal input port, the fluctuation and the electric power thus supplied of broken string outage by-pass switch detecting input signal, in case find outage or video signal interruption, be about to input signal and be immediate by-pass to the vision signal delivery outlet, otherwise allow input video enter A/D converter; A/D converter deposits video frame memory in after the mixed video decoding is changed.False proof logo maker was selected an image and is changed computing from default logo memory according to key and current time, generated false proof logo, under the control of clock signal, write the ad-hoc location of frame memory.D/A converter is a mixed video signal with the frame of video transform coding in the frame memory under the control of clock signal, exports by the vision signal delivery outlet.If control signal is arranged, control signal incoming control signal input port, and in control signal delivery outlet output, the initial synchronisation signal detector can the initial synchronisation signal of detection of concealed in control signal, and control false proof logo maker in view of the above and generate the standard testing logo; Camera control detection device detects control signal, is rotated or amplifies, when dwindling, can shield the embedding of false proof logo according to setting, so that more perfect image quality to be provided when the camera controlled signal drives.
Further technical scheme, the power supply of described false proof device and system's camera common source.
The present invention is based on such understanding and works:
1. the false proof logo that is superimposed on real time video signals is to seem select randomly from the different image of a lot of features, and the color value of the size of same default logo image, angle, brightness, each point has passed through variation again.So just produced the huge sample space of a possibility logo.
2. owing to generation and the stack and the time correlation of logo, there are different logos and different superposed positions the different time, thereby the effective time of the logo of the state that remains unchanged that can see is very short.
3. the difference of the color value of logo difference has constituted the notable attribute of logo, and just as the sawtooth of key, numerous possibilities of permutation and combination have brought benefit for the accuracy that detects.
4. do not know key and generate and the rule of stack logo according to key and time, the logo that prior art can't superpose up this is in real time separated from dynamic vision signal, thereby also just can't add the false proof logo the same with genuine false proof logo in real time in forging vision signal.The forfeiture real-time has also just been lost validity.
5. because false proof logo may appear at the optional position of video image at any time,, the part of forgery is not found in a period of time by local method of replacing video image.
Because the technique scheme utilization, the present invention compared with prior art has following advantage:
1. because the present invention's logo information that in vision signal, superposeed in real time, can be invaded at video surveillance network, vision signal is replaced, after time-delay or the local modification, learn by detection, plays anti-fake effect;
2. the present invention's stack is logo information, only occupies the sub-fraction of whole image, do not influence the display quality of other parts, and the work of treatment amount is little, not only can realize with the program in the all-purpose computer, also can adopt cheap isolated plant to finish;
3. logo information of the present invention is visible, is receiving (or broadcast) end, can be without Equipment Inspection, and Direct observation identification with the naked eye; And have the effect of threatening, can prevent the general attack of having a mind to.
4. logo information of the present invention and time correlation, and meticulous structure is arranged, in finite time, be difficult to crack forgery.
5. the logo information of the present invention stack exists all the time in the overall process of real-time video transmission, be difficult to erase, and provides on the space anti-tamper security from start to finish to guarantee.And, certain reference value is arranged also for the fake certification of the vision signal of storing.
Description of drawings
Accompanying drawing 1 is the implement device logical construction schematic diagram that the embodiment of the invention one adopts.
Accompanying drawing 2 is the implement device logical construction schematic diagram that the embodiment of the invention two adopts.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment one: a kind of badge anti-forge method that is used for real time monitoring videosignal, one key is provided, according to time signal, select to generate false proof logo after the image change in the default image library, the brightness of described false proof logo, size, angle and wherein the color of each point adjust according to this key; Described false proof logo dynamically is added in the raw video signal, and the position of stack is according to determining with the information of time correlation; Video signal transmission behind the stack logo is used to playing device, to realize the false proof processing of vision signal.
The false-proof detection method of present embodiment is, one key is provided, carry out time synchronized between test side and the transmitting terminal, according to time signal, select an image in the default image library to generate false proof logo, the brightness of described false proof logo, size, angle and wherein the color of each point adjust according to this key; In the vision signal that receives, according to the position that aforementioned calculation goes out, extract and the image of the same shape of false proof logo with size, these two images are carried out matching detection, according to the degree of matching detection, adopt statistical method to judge the true and false of vision signal.
Shown in accompanying drawing 1, realize the false proof device of present embodiment, comprise the vision signal input port, the vision signal delivery outlet, broken string outage by-pass switch, A/D converter, D/A converter, video frame memory, default logo memory, false proof logo maker and clock, described vision signal input port is connected to A/D converter through broken string outage by-pass switch, the output of A/D converter and false proof logo maker is connected to D/A converter behind video frame memory, the output of D/A converter is connected to the vision signal delivery outlet, and the by-passing signal of broken string outage by-pass switch directly is communicated to the vision signal delivery outlet.
Mixed video signal is imported from the vision signal input port, the fluctuation and the electric power thus supplied of broken string outage by-pass switch detecting input signal, in case find outage or video signal interruption, be about to input signal and be immediate by-pass to the vision signal delivery outlet, otherwise allow input video enter A/D converter; A/D converter deposits video frame memory in after the mixed video decoding is changed.False proof logo maker was selected an image and is changed computing from default logo memory according to key and current time, generated false proof logo, under the control of clock signal, write the ad-hoc location of frame memory.D/A converter is a mixed video signal with the frame of video transform coding in the frame memory under the control of clock signal, exports by the vision signal delivery outlet.If control signal is arranged, control signal incoming control signal input port, and in control signal delivery outlet output, the initial synchronisation signal detector can the initial synchronisation signal of detection of concealed in control signal, and control false proof logo maker in view of the above and generate the standard testing logo; Camera control detection device detects control signal, is rotated or amplifies, when dwindling, can shield the embedding of false proof logo according to setting, so that more perfect image quality to be provided when the camera controlled signal drives.
Embodiment two: a kind of be used for real time monitoring videosignal based on badge anti-forge method to temporal information summary, a key is provided, current time information is made an abstract, select a image in the default image library as false proof logo according to summary info; Described false proof logo dynamically is added in the raw video signal, and the position of stack is determined according to summary; Video signal transmission behind the stack logo is used to playing device, to realize the false proof processing of vision signal.
The false-proof detection method of present embodiment is, a key is provided, and carries out time synchronized between test side and the transmitting terminal, to lock in time information make an abstract, select a image in the default image library as false proof logo in view of the above; In the vision signal that receives, according to the position that time and summary are determined, extract and the image of the same shape of false proof logo with size, these two images are carried out matching detection, according to the degree of matching detection, adopt statistical method to judge the true and false of vision signal.
Shown in accompanying drawing 2, realize the false proof device of present embodiment, comprise the vision signal input port, the vision signal delivery outlet, broken string outage by-pass switch, video logo superimposer, digital signature maker and clock, described vision signal input port is connected to video logo superimposer through broken string outage by-pass switch, digital signature maker input clock signal, the output logo selects signal and choice of location signal to video logo superimposer, the output of video logo superimposer is connected to the vision signal delivery outlet, and the by-passing signal of broken string outage by-pass switch directly is communicated to the vision signal delivery outlet.
Mixed video signal is imported from the vision signal input port, the fluctuation and the electric power thus supplied of broken string outage by-pass switch detecting input signal, in case find outage or video signal interruption, be about to input signal and be immediate by-pass to the vision signal delivery outlet, otherwise allow input video enter video logo superimposer.The digital signature maker according to key to the current time digital signature, the result that will sign selects signal and choice of location signal to deliver to video logo superimposer as logo, video logo superimposer selects signal to select the logo that prestores according to logo, determine the superposed positions of logo according to the choice of location signal, under the control of clock signal, logo is added in the mixed video signal, exports by the vision signal delivery outlet.
Embodiment three: a kind of badge anti-forge method that is used for integrated camera, one group key is provided, select parameter to select a key according to key with current time information, global positioning information, camera serial number encryption, select to generate false proof logo after the image change in the default image library according to encrypted result, the brightness of described false proof logo, size, angle and wherein the color value of each point adjust according to this key; Described false proof logo dynamically is added in the raw video signal, and the position of stack is according to determining with the information of time correlation; Video signal transmission behind the stack logo is used to playing device, to realize the false proof processing of vision signal.
The badge anti-forge method of present embodiment, the logo additive process is finished in integrated camera inside, in the concentrated logo control signal subclass of having added of camera control signal, can be used for overlap-add region according to the demand control logo of monitoring by the remote monitoring personnel, and not timing and compartment of terrain more new key select parameter and cryptographic algorithm.
The false-proof detection method of present embodiment is, retention is about the global positioning information and the sequence number of camera installation site, according to the logo control signal, select used key, and between test side and transmitting terminal, carry out time synchronized by the logo control signal, then to temporal information, global positioning information, camera serial number encryption, select in view of the above to generate false proof logo after the image change in the default image library, the brightness of described false proof logo, size, angle and wherein the color value of each point adjust according to this encrypted result, calculate the superposed positions of logo simultaneously; In the vision signal that receives, according to the logo superposed positions that calculates, extract and the image of the same shape of false proof logo with size, these two images are carried out matching detection, according to the degree of matching detection, adopt statistical method to judge the true and false of vision signal.
Embodiment four: a kind of badge anti-forge method that is used for video monitoring of the band digital signature of time synchronized in advance that do not need.One private cipher key is provided, current time information is made digital signature, as false proof logo, the color value of each point was adjusted according to the current time in the described false proof logo according to an image in the default image library of digital signature selection; Identification mark, current time and described false proof logo dynamically are added in the raw video signal together, and the position of stack is selected to determine between several precalculated positions according to this digital signature; Video signal transmission behind the stack logo is used to playing device, to realize the false proof processing of vision signal.
The false-proof detection method of present embodiment is, one publicly-owned key is provided, in the vision signal that receives, method with pattern recognition, from several precalculated positions, detect identification mark, and after obtaining the definite position of current time and false proof logo thus, identify current time and false proof logo, and calculate the signature value according to false proof logo, utilize this signature of publicly-owned key authentication then.On the other hand, according to the current time of identifying, detect the color value distribution situation of each point in the false proof logo, the coupling that judges whether and superpose up.According to statistics, can judge the true and false of vision signal to checking and match condition in a period of time.
Claims (1)
1. false-proof detection method that is used for real time monitoring videosignal, it is characterized in that: a key is provided, carry out time synchronized between test side and the transmitting terminal, according to time signal, select an image in the default image library to generate false proof logo, the brightness of described false proof logo, size, angle and wherein each point one of all key elements of color or wherein the combination of some key elements adjust according to this key, and calculate the superposed positions of this logo; In the vision signal that receives, according to the position that aforementioned calculation goes out, extract and the image of the same shape of false proof logo with size, these two images are carried out matching detection, according to the degree of matching detection, adopt statistical method to judge the true and false of vision signal.
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| CN101783934A (en) * | 2010-03-16 | 2010-07-21 | 江苏瀚远科技股份有限公司 | Video anti-fake circuit board |
| CN101820531A (en) * | 2010-03-16 | 2010-09-01 | 江苏瀚远科技股份有限公司 | Video anti-counterfeiting monitoring device and monitoring method |
| CN104349144B (en) * | 2014-11-12 | 2017-12-29 | 陈运生 | A kind of method and device for differentiating scene and transmitting the monitor video true and false |
| CN105007466B (en) * | 2015-07-23 | 2019-04-19 | 熊建民 | Prevent the monitor video recording system and its method for recording of editing |
| CN107370712A (en) * | 2016-05-11 | 2017-11-21 | 中兴通讯股份有限公司 | A kind of code stream distorts monitoring method, device and communication system |
| US20200215410A1 (en) * | 2017-09-29 | 2020-07-09 | Intel Corporation | Aligning sensor data with video |
| CN108564368B (en) * | 2018-04-11 | 2021-12-03 | 台州市康新电容器有限公司 | Payment method |
| CN113556518B (en) * | 2021-09-23 | 2021-12-17 | 成都派沃特科技股份有限公司 | Video data scheduling method, device, equipment and storage medium |
| CN115460425B (en) * | 2022-07-29 | 2023-11-24 | 上海赫千电子科技有限公司 | Audio and video synchronous transmission method based on vehicle-mounted Ethernet transmission |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1394319A (en) * | 2000-11-02 | 2003-01-29 | 密刻爱你有限公司 | Watermarking system and method for protecting digital image from forgery or alteration |
| CN1414778A (en) * | 2002-12-12 | 2003-04-30 | 中山大学 | Watermark method using geometry calibrated anti geometry conversion image |
| CN1440197A (en) * | 2003-04-03 | 2003-09-03 | 上海交通大学 | Positioned Chaos fragile digital implanting and extracting method |
| WO2004066206A1 (en) * | 2003-01-23 | 2004-08-05 | Koninklijke Philips Electronics N.V. | Embedding multiple watermarks |
| US6792129B1 (en) * | 1999-08-25 | 2004-09-14 | Sharp Laboratories Of America | Digital watermarking in a perceptually uniform domain |
| KR20040079164A (en) * | 2003-03-06 | 2004-09-14 | 삼성전자주식회사 | CCTV system capable of control monitoring and recording in relates with event occurrence and control method thererof |
-
2005
- 2005-02-06 CN CN2008100968040A patent/CN101282457B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6792129B1 (en) * | 1999-08-25 | 2004-09-14 | Sharp Laboratories Of America | Digital watermarking in a perceptually uniform domain |
| CN1394319A (en) * | 2000-11-02 | 2003-01-29 | 密刻爱你有限公司 | Watermarking system and method for protecting digital image from forgery or alteration |
| CN1414778A (en) * | 2002-12-12 | 2003-04-30 | 中山大学 | Watermark method using geometry calibrated anti geometry conversion image |
| WO2004066206A1 (en) * | 2003-01-23 | 2004-08-05 | Koninklijke Philips Electronics N.V. | Embedding multiple watermarks |
| KR20040079164A (en) * | 2003-03-06 | 2004-09-14 | 삼성전자주식회사 | CCTV system capable of control monitoring and recording in relates with event occurrence and control method thererof |
| CN1440197A (en) * | 2003-04-03 | 2003-09-03 | 上海交通大学 | Positioned Chaos fragile digital implanting and extracting method |
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