CN107241585A - Video frequency monitoring method and system - Google Patents
Video frequency monitoring method and system Download PDFInfo
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- CN107241585A CN107241585A CN201710669125.7A CN201710669125A CN107241585A CN 107241585 A CN107241585 A CN 107241585A CN 201710669125 A CN201710669125 A CN 201710669125A CN 107241585 A CN107241585 A CN 107241585A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
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Abstract
The invention provides video frequency monitoring method and system, it is related to field of video monitoring.The video frequency monitoring method that the present invention is provided, it is pre-processed by first processor to video, first processor has extracted key frame from the video-frequency band branched away, and has obtained its corresponding first object coding, and then has obtained the first summary of first coding；Then, first summary and video-frequency band have been sent to by second processor by different communication ports, afterwards, second processor extracts key frame and the second target code, when only the second target code is consistent with first object coding from video-frequency band in a predetermined manner after it have received video-frequency band, it is effective just to think video-frequency band, afterwards, video-frequency band is stored in locally by second processor again, to complete the transmission of monitor video.So as to ensure that second processor can only complete effective video preservation, remaining invalid video can be ignored.
Description
Technical field
The present invention relates to field of video monitoring, in particular to video frequency monitoring method and system.
Background technology
Video monitoring is the important component of safety and protection system, English Cameras and Surveillance.Pass
The monitoring system of system includes front-end camera, transmission cable, video monitoring platform.Video camera can be divided into network digital camera and
Analog video camera, can as head end video picture signal collection.It is a kind of stronger integrated system of prevention ability.Video is supervised
Control is enriched with its directly perceived, accurate, timely and information content and is widely used in many occasions.In recent years, with computer, network
And image procossing, transmission technology are developed rapidly, Video Supervision Technique there has also been significant progress.
The main function of video monitoring is that the real-time pictures of target area are transferred in monitor terminal, but real work to send out
Existing, the mode of tradition monitoring image transmission is not reasonable.
The content of the invention
It is an object of the invention to provide video frequency monitoring method and system, to improve the efficiency of video monitoring.
In a first aspect, the embodiments of the invention provide a kind of video frequency monitoring method, including：
Monitoring camera sends the video photographed to first processor by WIFI；
Video is divided into continuous multiple video-frequency bands by first processor, each video-frequency band when a length of 5 minutes；
First processor extracts the key frame in video-frequency band；
First processor extracts first object coding according to the first acquisition modes from key frame；
First processor calculates the first summary that first object is encoded using the first digest algorithm obtained in advance；
First processor uses the first communication port, and first is made a summary and is sent to second processor；First communication port is
Telecommunication passage；
First processor was packed newest video-frequency band every 5 minutes, to form the first packet, and passed through
Two communication ports send the first packet to second processor；Second communication port is different from the first communication port long-range
Communication port；
Second processor is after video-frequency band is received, and the validity to the video-frequency band in the first packet is verified；
If validation verification passes through, second processor is extracted the second target according to the second acquisition modes from key frame and compiled
Code；
If validation verification does not pass through, second processor sends reissue commands to first processor；
Second processor calculates the second summary of the second target code using the second digest algorithm obtained in advance；
Whether the summary of second processor checking first and the second summary are identical；
If the first summary is identical with the second summary, the corresponding video-frequency band of the second summary is stored in this by second processor
Ground.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the first of first aspect, wherein, also
Including：
Second processor obtains the significance level of video-frequency band；
If significance level exceedes default threshold value, second processor obtains the video corresponding with significance level and decomposes rule
Then；
Video-frequency band is resolved into three parts of local datas by second processor according to video decomposition rule；In every part of local data
Carry the partial data of each two field picture in video-frequency band；
Second processor stores three parts of local datas to the first publicly-owned memory, the second publicly-owned memory and privately owned respectively
In memory.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of second of first aspect, wherein,
Before newest video-frequency band is packed and sent by the second communication port to second processor by step first processor, also wrap
Include：
Decoded information is encrypted using the first encryption key for first processor；Decoded information is located at the first packet
In stem, encoded video data body is carried in the data portion of the first packet；Decoded information is used to read video
Body of data；
The first communication port is used in step first processor, first is made a summary also includes before being sent to second processor：
The first summary is encrypted using the second encryption key for first processor, and first after encryption is made a summary to the
Two processors are sent；First encryption key and the second encryption key are differed；
The second summary of the second target code is calculated using the second digest algorithm obtained in advance in step second processor
It is preceding also to include：
Decoded information is decrypted the first summary using the first decruption key for second processor, to obtain decoding letter
Breath；
Second processor is decoded using decoded information to encoded video data body；
The first summary after encryption is decrypted using the second decruption key for second processor.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the third of first aspect, wherein,
Two processors resolve into three parts of local datas according to video decomposition rule, by video-frequency band to be included：
Each two field picture in video-frequency band is carried out gray processing processing by second processor；
Second processor generates the first two field picture, the second two field picture and the according to the gray value of designated frame image in video-frequency band
Three two field pictures；The gray value and the 3rd frame figure of the gray value of first two field picture specified pixel point, the second two field picture specified pixel point
The gray value sum selected as specified pixel is equal to the gray value for specifying two field picture middle finger fixation vegetarian refreshments；
First two field picture, the second two field picture and the 3rd two field picture are stored in different local datas by second processor respectively
In.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 4th of first aspect kind, wherein,
One encryption key and the second encryption key are unsymmetrical key.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 5th of first aspect kind, wherein, also
Including：
Second processor calculates the value differences of preceding picture frame and rear picture frame in video-frequency band, obtains pixel value difference；
Second processor judges whether pixel value difference exceedes default threshold value；
If exceeding, preceding picture frame and rear picture frame are marked second processor, and by the preceding picture frame after mark
With corresponding picture frame in rear picture frame covering video-frequency band.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 6th of first aspect kind, wherein,
One publicly-owned memory, the second publicly-owned memory are the equipment of publicly-owned cloud storage；Privately owned memory is private cloud storage equipment.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 7th of first aspect kind, wherein,
One publicly-owned memory, the second publicly-owned memory are the equipment of publicly-owned cloud storage；Privately owned memory is storage device under line.
Second aspect, the embodiment of the present invention additionally provides a kind of video monitoring system, including：Multiple monitoring cameras,
One processor and second processor；Multiple monitoring cameras are separately positioned in different regions, first processor respectively with it is many
Individual monitoring camera is connected by WIFI；First processor and the connection of second processor telecommunication；
Monitoring camera, first processor and second processor perform corresponding operation according to the method for such as first aspect.
With reference to second aspect, the embodiments of the invention provide the possible embodiment of the first of second aspect, wherein, often
Fluorescence labeling note is provided with individual monitoring camera.
Video frequency monitoring method provided in an embodiment of the present invention, it is pre-processed by first processor to video, the
One processor has extracted key frame from the video-frequency band branched away, and has obtained its corresponding first object coding, and then obtains
The first summary of first coding is arrived；Then, the first summary and video-frequency band have been sent to the by different communication ports
Two processors, afterwards, second processor extract key frame from video-frequency band in a predetermined manner after it have received video-frequency band
With the second target code, when only the second target code and first object coding are consistent, just think video-frequency band be it is effective, it
Afterwards, video-frequency band is stored in locally by second processor again, to complete the transmission of monitor video.So as to ensure that second processor only
Effective video can be preserved, remaining invalid video can be ignored.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be attached to what is used required in embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore is not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 shows the module frame chart of the system corresponding to the video frequency monitoring method that the embodiment of the present invention is provided；
Fig. 2 shows first details flow chart of the video frequency monitoring method that the embodiment of the present invention is provided；
Fig. 3 shows second details flow chart of the video frequency monitoring method that the embodiment of the present invention is provided；
Fig. 4 shows the 3rd details flow chart of the video frequency monitoring method that the embodiment of the present invention is provided.
Embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Generally exist
The component of the embodiment of the present invention described and illustrated in accompanying drawing can be arranged and designed with a variety of configurations herein.Cause
This, the detailed description of the embodiments of the invention to providing in the accompanying drawings is not intended to limit claimed invention below
Scope, but it is merely representative of the selected embodiment of the present invention.Based on embodiments of the invention, those skilled in the art are not doing
The every other embodiment obtained on the premise of going out creative work, belongs to the scope of protection of the invention.
In correlation technique, various video monitoring systems and corresponding method, but the monitoring in correlation technique have been occurred in that
In system and method, no matter which kind of video data is background devices receive, video can be all stored in locally, this is directly resulted in
The problem of memory space inadequate of background devices.
For this kind of problem, this application provides a kind of video frequency monitoring method, this method acts on video monitoring system, depending on
Frequency monitoring system has three part compositions, as shown in figure 1, being monitoring camera 101, first processor 102 and second respectively
Processor 103；This method includes：
Monitoring camera 101 sends the video photographed to first processor 102 by WIFI；
Video is divided into continuous multiple video-frequency bands by first processor 102, each video-frequency band when a length of 5 minutes；
First processor 102 extracts the key frame in video-frequency band；
First processor 102 extracts first object coding according to the first acquisition modes from key frame；
First processor 102 calculates the first summary that first object is encoded using the first digest algorithm obtained in advance；
First processor 102 uses the first communication port, and first is made a summary and is sent to second processor 103；First communication
Passage is telecommunication passage；
First processor 102 was packed newest video-frequency band every 5 minutes, to form the first packet, and was passed through
Second communication port sends the first packet to second processor 103；Second communication port is different from the first communication port
Telecommunication passage；
Second processor 103 is after video-frequency band is received, and the validity to the video-frequency band in the first packet is verified；
If validation verification passes through, second processor 103 extracts the second mesh according to the second acquisition modes from key frame
Mark coding；
If validation verification does not pass through, second processor 103 sends reissue commands to first processor 102；
Second processor 103 calculates the second summary of the second target code using the second digest algorithm obtained in advance；
Whether the summary of the checking of second processor 103 first and the second summary are identical；
If the first summary is identical with the second summary, second processor 103 stores the corresponding video-frequency band of the second summary
Local.
Monitoring camera 101 is typically to be set directly in the scene specified, such as square, cinema place.It is same
The monitoring camera 101 of a small range is connected by way of wifi with first processor 102, and then, monitoring camera 101
Shooting obtained video can be sent by wifi to first processor 102.
Video is divided into continuous multiple video-frequency bands by first processor 102 first after video is received.Ordinary circumstance
Under, the video that first processor 102 is received is a continuous video, and it needs to carry out timing while video is received,
Reached per timing 5 minutes, just by video one video-frequency band of formation received in nearest 5 minutes.Generally, one regards
Video in frequency range is produced by same monitoring camera 101 is shot.
Because video is the order arrangement form by multiple continuous two field pictures according to time order and function, then, at first
Device 102 is managed also to extract key frame from video-frequency band and come out, with the time in subsequent steps.
Extracting the mode of key frame has a variety of, is set forth below two kinds can used as example.The first, the first processing
A two field pictures in video-frequency band may be selected as key frame in device 102, and the brightness value sums of whole pixels of A two field pictures is higher than regarding
The brightness value sum of whole pixels of any one two field picture of other in frequency range.Second, the first processing can calculate any
The image difference of one two field picture, image difference is obtained by the absolute value sum of the first difference and the second difference, and first is poor
Value is the pixel value of current frame image and previous frame image, and the second difference is the pixel of current frame image and latter two field picture
Value difference value.And then, just key frame images simply very can be determined in the way of traversal by both modes.Certainly, true
Determine before key frame images, each two field picture in video-frequency band can also be pre-processed, to improve the effect of its contrast.
Afterwards, first processor 102 also needs to extract first object coding from key frame, regional first object coding
Form has a variety of, it is necessary to which explanation, first object coding is that the information of direct basis key frame images is obtained, and is disobeyed
According to external information.Such as, first object coding can be formed by the quantity of the first row pixel of key frame images；Compare again
Such as, first object coding can be by the brightness value arrangement form of the first row pixel of key frame images；Again such as, first
Target code can be the amount formed of the pixel that brightness value exceedes predetermined value in key frame images.
After first object coding is determined, it is corresponding to calculate first object coding to use the first digest algorithm
First summary.It should be noted that digest algorithm is Hash (Hash) algorithm, it is right that it can calculate first object coding institute
The first summary answered, this calculating process is irreversible, i.e. according to the irreversible release first object coding of the first summary,
Can not backstepping go out the calculation formula of digest algorithm.
Then, first processor 102 sends first summary by the first communication port to second processor 103.Also,
First processor is packed the video-frequency band being newly generated in 102 each 5 minutes, and will send packing to second processor 103
Video-frequency band afterwards.
Second processor 103 carries out validation verification to video-frequency band first after video-frequency band is received, if checking is logical
If crossing, then can obtain the second summary according to the course of work similar mode with first processor 102, then by than
It is whether identical to the first summary and the second summary, to judge whether video-frequency band is effective video section.First processor 102 and
Two processors 103 determine key frame, determine target code and determine that the mode made a summary should be identical.
Generally, video-frequency band can only be sent to second processor 103 by some external equipment, rather than send video
Summary corresponding to section, now, then system need not comprehend the video-frequency band, so as to ensure that second processor 103 will can only have
The video-frequency band of effect is preserved, and then directly ignores (as deleted) for those video-frequency bands do not made a summary, and is deposited so as to ensure that
Storage space can be effectively used.And it is different with the communication port of the first summary to send video-frequency band, can also play certain
Raising safety effect.
It is preferred that, method provided herein, as shown in Fig. 2 also including：
S201, second processor 103 obtains the significance level of video-frequency band；
S202, if significance level exceedes default threshold value, second processor 103 obtains corresponding with significance level regard
Frequency decomposition rule；
Video-frequency band is resolved into three parts of local datas by S203, second processor 103 according to video decomposition rule；Every part of office
The partial data of each two field picture in video-frequency band is carried in portion's data；
S204, second processor 103 stores three parts of local datas to the first publicly-owned memory, the second publicly-owned storage respectively
In device and privately owned memory.
Video-frequency band is stored in locally it is, second processor 103 is handled, video-frequency band other can also be stored in and deposited
In reservoir, but in order to ensure the safety of data, should using first decompose store afterwards by the way of stored so that every part of local number
The partial data of each two field picture in video-frequency band is carried in, to ensure read for some timely hackers as far as possible
Data in some memory, can not also know the implication of the desired expression of whole video-frequency band, so as to ensure that the safety of data
Property.
It is preferred that, step first processor 102 by newest video-frequency band packed and by the second communication port to
Before second processor 103 is sent, in addition to：
Decoded information is encrypted using the first encryption key for first processor 102；Decoded information is located at the first data
In the stem of bag, encoded video data body is carried in the data portion of the first packet；Decoded information is used to read
Video data body；
The first communication port is used in step first processor 102, first is made a summary before being sent to second processor 103 also
Including：
The first summary is encrypted using the second encryption key for first processor 102, and first after encryption is made a summary
Sent to second processor 103；First encryption key and the second encryption key are differed；
Plucked in step second processor 103 using the second of the second digest algorithm the second target code of calculating obtained in advance
Preceding also to include：
Decoded information is decrypted the first summary using the first decruption key for second processor 103, to obtain decoding
Information；
Second processor 103 is decoded using decoded information to encoded video data body；
The first summary after encryption is decrypted using the second decruption key for second processor 103.
It is, first processor 102 is also needed before the first summary and video-frequency band are sent into second processor 103
The two data are encrypted, because the frame of video in video-frequency band is excessive, while being carried out to these frame of video direct
If encryption, then workload is excessive, unfavorable to system treatment effeciency.Therefore, now solved using being encrypted to decoded information
Code is the process being subjected to before video can be normally read, and therefore, can also be played by the way that decoded information is encrypted
Effect to a certain extent.Similar, the first summary, which is encrypted, can also play a part of improving security.Also, by
Differed in the first encryption key and the second encryption key, this ensure that hacker can not learn that the two are encrypted simultaneously
The content of key, further increases security.Certainly, it is corresponding, second processor 103 receive the two data it
Afterwards, in addition it is also necessary to the corresponding operation being decrypted.
Below, the process for generating local data is illustrated.That is, as shown in figure 3, step second processor 103 according to
Video decomposition rule, video-frequency band is resolved into three parts of local datas includes：
Each two field picture in video-frequency band is carried out gray processing processing by S301, second processor 103；
S302, second processor 103 generates the first two field picture, the second frame according to the gray value of designated frame image in video-frequency band
Image and the 3rd two field picture；The gray value of first two field picture specified pixel point, the gray value of the second two field picture specified pixel point and
The gray value sum that 3rd two field picture specified pixel is selected is equal to the gray value for specifying two field picture middle finger fixation vegetarian refreshments；
First two field picture, the second two field picture and the 3rd two field picture are stored in different by S303, second processor 103 respectively
In local data.
It is, first, each two field picture in video-frequency band is first carried out gray processing processing by second processor 103.It is right
For same two field picture (specified two field picture), its image is by being constituted according to multiple pixels of matrix arrangement, and often
Individual pixel all has a gray value, the gray value is divided into three values, that is, the gray value is split as into three numerical value
Sum.The gray value for such as specifying the A pixels (such as coordinate is the pixel of (9,12)) in two field picture is 123, then the gray scale
Value can be split as 50+20+53, and then, coordinate is that the gray value of the pixel of (9,12) is 50 in the first two field picture；Second frame
Coordinate is that the gray value of the pixel of (9,12) is 20 in image；Coordinate is the gray scale of the pixel of (9,12) in first two field picture
It is worth for 53.And then, by this kind of mode, the gray value of each pixel in specified two field picture can be split, and
The gray value is distributed into three different two field pictures, also, these three two field pictures are stored in different local datas respectively
In.And then, it is ensured that simple is that can not know the implication expressed by original image by a two field picture.Serve raising
The effect of security.
It is preferred that, the first encryption key and the second encryption key are unsymmetrical key.Such as, can be that RSA is asymmetric
Key used in AES.
It is preferred that, as shown in figure 4, also including in method provided herein：
S401, second processor 103 calculates the value differences of preceding picture frame and rear picture frame in video-frequency band, obtains pixel
Difference；
S402, second processor 103 judges whether pixel value difference exceedes default threshold value；
S403, if exceeding, preceding picture frame and rear picture frame are marked second processor 103, and by after mark
Corresponding picture frame in preceding picture frame and rear picture frame covering video-frequency band.
It is, in this programme, can calculate the difference of the pixel value for the adjacent two field pictures specified (such as, can refer to
The difference of the pixel value of fixation vegetarian refreshments；Again such as, can be the difference of the pixel value sum of the pixel of designated area).If
Difference is excessive, then it is assumed that have larger difference between this two field pictures, now, then will be understood that the prospect on this two images
Change (being walked about if any pedestrian) is there occurs, therefore, it can improve other by way of increasing mark in this two field pictures
Personnel watch the efficiency of video.
It is preferred that, the first publicly-owned memory, the second publicly-owned memory are the equipment of publicly-owned cloud storage；Privately owned memory is
Private cloud storage equipment.Cloud storage technology can obtain corresponding data anywhere or anytime in order to user, be conducive to user to use
Data.
It is preferred that, the first publicly-owned memory, the second publicly-owned memory are the equipment of publicly-owned cloud storage；Privately owned memory is
Storage device under line.By privately owned memory be set to storage device under line can avoid networking (reaching the standard grade) afterwards caused data by the
The problem of tripartite steals.
Present invention also provides a kind of video monitoring system, including：At multiple monitoring cameras, first processor and second
Manage device；Multiple monitoring cameras are separately positioned in different regions, and first processor passes through with multiple monitoring cameras respectively
WIFI connections；First processor and the connection of second processor telecommunication；
Monitoring camera, first processor and second processor perform corresponding operation according to the method described above.
It is preferred that, fluorescence labeling note is provided with each monitoring camera.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.
If the function is realized using in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially in other words
The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are to cause a computer equipment (can be individual
People's computer, server, or network equipment etc.) perform all or part of step of each of the invention embodiment methods described.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of video frequency monitoring method, it is characterised in that including：
Monitoring camera sends the video photographed to first processor by WIFI；
The video is divided into continuous multiple video-frequency bands by first processor, each video-frequency band when a length of 5 minutes；
First processor extracts the key frame in the video-frequency band；
First processor extracts first object coding according to the first acquisition modes from the key frame；
The first processor calculates the first summary that the first object is encoded using the first digest algorithm obtained in advance；
The first processor uses the first communication port, and described first is made a summary and is sent to second processor；Described first leads to
Believe that passage is telecommunication passage；
First processor was packed newest video-frequency band every 5 minutes, to form the first packet, and logical by second
Letter passage sends the first packet to second processor；Second communication port is different from first communication port
Telecommunication passage；
Second processor is after video-frequency band is received, and the validity to the video-frequency band in the first packet is verified；
If validation verification passes through, second processor is extracted the second target according to the second acquisition modes from the key frame and compiled
Code；
If validation verification does not pass through, second processor sends reissue commands to first processor；
Second processor calculates the second summary of second target code using the second digest algorithm obtained in advance；
Whether the summary of second processor checking first and the second summary are identical；
If the first summary is identical with the second summary, the corresponding video-frequency band of the described second summary is stored in this by second processor
Ground.
2. video frequency monitoring method according to claim 1, it is characterised in that also include：
Second processor obtains the significance level of the video-frequency band；
If the significance level exceedes default threshold value, second processor obtains the video point corresponding with the significance level
Solution rule；
The video-frequency band is resolved into three parts of local datas by second processor according to the video decomposition rule；Every part of local number
The partial data of each two field picture in the video-frequency band is carried in；
Second processor stores three parts of local datas to the first publicly-owned memory, the second publicly-owned memory and privately owned storage respectively
In device.
3. video frequency monitoring method according to claim 1, it is characterised in that in step first processor by newest video
Before Duan Jinhang packs and sent by the second communication port to second processor, in addition to：
Decoded information is encrypted using the first encryption key for first processor；The decoded information is located at first data
In the stem of bag, encoded video data body is carried in the data portion of first packet；The decoded information
For reading video data body；
The first communication port is used in first processor described in step, described first is made a summary and is also wrapped before being sent to second processor
Include：
The first summary is encrypted using the second encryption key for first processor, and first after encryption is made a summary at second
Device is managed to send；First encryption key and the second encryption key are differed；
The second summary of second target code is calculated using the second digest algorithm obtained in advance in step second processor
It is preceding also to include：
The decoded information is decrypted the first summary using the first decruption key for second processor, to obtain decoding letter
Breath；
Second processor is decoded using decoded information to encoded video data body；
The first summary after encryption is decrypted using the second decruption key for second processor.
4. video frequency monitoring method according to claim 2, it is characterised in that second processor is decomposed according to the video and advised
Then, the video-frequency band is resolved into three parts of local datas includes：
Each two field picture in video-frequency band is carried out gray processing processing by second processor；
Second processor generates the first two field picture, the second two field picture and the 3rd frame according to the gray value of designated frame image in video-frequency band
Image；The gray value and the 3rd frame figure of the gray value of the first two field picture specified pixel point, the second two field picture specified pixel point
The gray value sum selected as specified pixel is equal to the gray value for specifying two field picture middle finger fixation vegetarian refreshments；
First two field picture, the second two field picture and the 3rd two field picture are stored in different local datas by second processor respectively.
5. video frequency monitoring method according to claim 3, it is characterised in that first encryption key and described second adds
Key is unsymmetrical key.
6. video frequency monitoring method according to claim 1, it is characterised in that also include：
Second processor calculates the value differences of preceding picture frame and rear picture frame in video-frequency band, obtains pixel value difference；
Second processor judges whether pixel value difference exceedes default threshold value；
If exceeding, the preceding picture frame and rear picture frame are marked second processor, and by the preceding picture frame after mark
Corresponding picture frame in the video-frequency band is covered with rear picture frame.
7. video frequency monitoring method according to claim 2, it is characterised in that the first publicly-owned memory, the second publicly-owned storage
Device is the equipment of publicly-owned cloud storage；The privately owned memory is private cloud storage equipment.
8. video frequency monitoring method according to claim 2, it is characterised in that the first publicly-owned memory, the second publicly-owned storage
Device is the equipment of publicly-owned cloud storage；The privately owned memory is storage device under line.
9. a kind of video monitoring system, it is characterised in that including：Multiple monitoring cameras, first processor and second processor；
The multiple monitoring camera is separately positioned in different regions, and the first processor is logical with multiple monitoring cameras respectively
Cross WIFI connections；The first processor and second processor telecommunication connection；
The monitoring camera, the first processor and the second processor are according to as described in claim any one of 1-8
Method perform corresponding operation.
10. system according to claim 9, it is characterised in that be provided with fluorescence labeling note on each monitoring camera.
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