CN108063914A - Monitor video file generated, playback method, device and terminal device - Google Patents
Monitor video file generated, playback method, device and terminal device Download PDFInfo
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- CN108063914A CN108063914A CN201711174553.9A CN201711174553A CN108063914A CN 108063914 A CN108063914 A CN 108063914A CN 201711174553 A CN201711174553 A CN 201711174553A CN 108063914 A CN108063914 A CN 108063914A
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/70—Information retrieval; Database structures therefor; File system structures therefor of video data
- G06F16/73—Querying
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Abstract
The present invention provides a kind of monitor video file generated, playback method, device and terminal device.Wherein, monitor video document generating method includes：Obtain the real-time video frame of monitoring camera shooting；The first video frame consistent with the real-time video frame is inquired about in duplicate removal sets of video frames；If not inquiring the first video frame consistent with the real-time video frame, the real-time video frame is saved into the duplicate removal sets of video frames, and the mapping relations in index is played between recording played time and the real-time video frame；If inquiring the first video frame consistent with the real-time video frame, the real-time video frame, and the mapping relations in index is played between recording played time and the first video frame are abandoned；Monitor video file is generated according to the duplicate removal sets of video frames and the index that plays.The present invention can reduce the size of monitor video file, extend storable monitor video duration.
Description
Technical field
The present invention relates to field of information security technology, and in particular to a kind of monitor video file generated, playback method, device
And terminal device.
Background technology
Video monitoring system has been widely used in daily life as a kind of social security system system, bank, business
The public places such as field, supermarket, hotel, street corner, crossing, charge station are seen everywhere the video capture devices such as camera.This kind of system
Installation substantially increase social safty, play the role of real time monitoring and record to the behavior of criminal, for public affairs
Peace organ clear up a criminal case provides a large amount of true and reliable clues.
The mode of existing video monitoring system storage monitor video, video under usually camera is recorded is real-time,
It intactly preserves in the database.For general video surveillance applications scene, such as shop, warehouse, workshop etc., at night etc.
Some periods, the situation that changing occurs in the scene monitored is less, for the application scenarios being monitored using static camera,
Scenic picture is typically all static, that is to say, that monitored picture can keep same picture without generating more for a long time
Apparent variation.
The prior art is all in real time saved in monitor video all the time in the storage devices such as hard disk, video-tape, in case
Later retrieval, which is returned, the uses such as looks into, but the monitor video file so generated needs larger memory space, is set so as to cause monitoring
The standby monitor video grown when that can only store shorter in the case of limited storage space.
The content of the invention
In view of the above problems, the purpose of the present invention is by providing a kind of monitor video document generating method, device and end
A kind of end equipment and monitor video document play-back method, device and terminal device are occupied with solving current monitor video file
Memory space is big and monitoring that monitoring device is grown when that can only store shorter in the case of limited storage space caused by
The problem of video.
First aspect present invention provides a kind of monitor video document generating method, including：The reality that monitoring camera is taken to shoot
When video frame；
The first video frame consistent with the real-time video frame is inquired about in duplicate removal sets of video frames；
If not inquiring the first video frame consistent with the real-time video frame, the real-time video frame is saved into institute
State duplicate removal sets of video frames, and the mapping relations in index is played between recording played time and the real-time video frame；
If inquiring the first video frame consistent with the real-time video frame, the real-time video frame is abandoned, and is being played
Mapping relations in index between recording played time and the first video frame；
Monitor video file is generated according to the duplicate removal sets of video frames and the index that plays.
It is described in the inquiry of duplicate removal sets of video frames and described real-time in one change embodiment of first aspect present invention
The consistent first video frame of video frame, including：
According to the first video frame in duplicate removal sets of video frames described in the order traversal of shooting time from the front to the back, and will be all over
The first video frame gone through is compared with the real-time video frame, until obtaining consistent with the real-time video frame comparison result
First video frame.
It is described in the inquiry of duplicate removal sets of video frames and the reality in another change embodiment of first aspect present invention
When the consistent first video frame of video frame, including：
Extract the characteristics of image of the real-time video frame；
The characteristics of image tree of the duplicate removal sets of video frames is traveled through, inquires about regarding in real time from described image characteristics tree with described
The consistent characteristics of image of the characteristics of image of frequency frame, determine the corresponding first video frame of the described image feature inquired be with it is described
The consistent first video frame of real-time video frame, wherein, record has each in the duplicate removal sets of video frames in described image characteristics tree
The characteristics of image of first video frame.
Another of first aspect present invention is changed in embodiment, according to the duplicate removal sets of video frames and described is being broadcast
Before putting index generation monitor video file, further include：
Calculate the estimated memory space of the duplicate removal sets of video frames；
Judge whether the estimated memory space meets default file unloading condition, gone when meeting described in triggering basis
Weight sets of video frames and the index that plays generate monitor video file.
In another change embodiment of first aspect present invention, according to the duplicate removal sets of video frames and described broadcasting
Before putting index generation monitor video file, further include：
The cryptographic Hash of each video frame preserved in the duplicate removal sets of video frames is calculated using hash algorithm；
Described play of cryptographic Hash write-in is indexed.
Second aspect of the present invention provides a kind of monitor video file creating apparatus, including：
Real-time video frame acquisition module, for obtaining the real-time video frame of monitoring camera shooting；
Video frame enquiry module is repeated, it is consistent with the real-time video frame first for being inquired about in duplicate removal sets of video frames
Video frame；
Real-time video frame memory module, if for not inquiring the first video frame consistent with the real-time video frame,
The real-time video frame is saved into the duplicate removal sets of video frames, and play index in the recording played time with it is described in real time
Mapping relations between video frame；
If real-time video frame discard module for inquiring the first video frame consistent with the real-time video frame, is lost
Abandon the real-time video frame, and the mapping relations in index is played between recording played time and the first video frame；
Video file generation module, for generating monitor video according to the duplicate removal sets of video frames and the index that plays
File.
It is described to repeat video frame enquiry module in one change embodiment of second aspect of the present invention, including：
Video frame comparing unit, for according in duplicate removal sets of video frames described in shooting time order traversal from the front to the back
First video frame, and the first video frame traversed is compared with the real-time video frame, until obtaining and the reality
When the consistent first video frame of video frame comparison result.
It is described to repeat video frame enquiry module in another change embodiment of second aspect of the present invention, including：
Image characteristics extraction unit, for extracting the characteristics of image of the real-time video frame；
Image feature comparison unit, it is special from described image for traveling through the characteristics of image tree of the duplicate removal sets of video frames
The characteristics of image consistent with the characteristics of image of the real-time video frame is inquired about in sign tree, determines the described image feature pair inquired
The first video frame answered is the first video frame consistent with the real-time video frame, wherein, there is record in described image characteristics tree
The characteristics of image of each first video frame in the duplicate removal sets of video frames.
Another of second aspect of the present invention is changed in embodiment, and the monitor video file creating apparatus further includes：
It is expected that memory space estimation block, for calculating the estimated memory space of the duplicate removal sets of video frames；
Unloading judgment module for judging whether the estimated memory space meets default file unloading condition, is according with
Triggering generates monitor video file according to the duplicate removal sets of video frames and the index that plays during conjunction.
In another change embodiment of second aspect of the present invention, the monitor video file creating apparatus further includes：
Cryptographic Hash computing module, for calculating each video frame preserved in the duplicate removal sets of video frames using hash algorithm
Cryptographic Hash；
Cryptographic Hash logging modle, for described play of cryptographic Hash write-in to be indexed.
Third aspect present invention provides a kind of terminal device, including：It memory, processor and is stored on the memory
And the computer program that can be run on the processor, the present invention is performed when the processor runs the computer program and is carried
The monitor video document generating method of confession.
Fourth aspect present invention provides a kind of monitor video document play-back method, including：
Monitor video file to be played is parsed, obtains playing index and duplicate removal sets of video frames；
It reads described play to index, obtains the reproduction time recorded in the broadcasting index and the duplicate removal sets of video frames
The mapping relations of middle corresponding video frame；
Corresponding video frame is transferred from the duplicate removal sets of video frames according to reproduction time and the mapping relations to carry out
It plays.
Fifth aspect present invention provides a kind of monitor video file playing device, including：
Monitor video document analysis module for parsing monitor video file to be played, obtains playing index and duplicate removal
Sets of video frames；
Index read module is played, is indexed for reading described play, when obtaining the broadcasting recorded in the broadcasting index
Between mapping relations with corresponding video frame in the duplicate removal sets of video frames；
Playing module, for being transferred according to reproduction time and the mapping relations from the duplicate removal sets of video frames accordingly
Video frame play out.
Sixth aspect present invention provides a kind of terminal device, including：It memory, processor and is stored on the memory
And the computer program that can be run on the processor, the present invention is performed when the processor runs the computer program and is carried
The monitor video document play-back method of confession.
The monitor video document generating method that first aspect present invention provides, including：Obtain the reality of monitoring camera shooting
When video frame；The first video frame consistent with the real-time video frame is inquired about in duplicate removal sets of video frames；If not inquiring and institute
The consistent first video frame of real-time video frame is stated, then the real-time video frame is saved into the duplicate removal sets of video frames, and
Play the mapping relations between recording played time and the real-time video frame in index；If it inquires and the real-time video frame
Consistent first video frame then abandons the real-time video frame, and recording played time and the first video in index is played
Mapping relations between frame；Monitor video file is generated according to the duplicate removal sets of video frames and the index that plays.The present invention
By abandoning the real-time video frame consistent with first video frame, so as to fulfill the duplicate removal to the video frame repeated, can effectively drop
The size of the low monitor video file ultimately generated so that monitoring device can store longer under conditions of similary memory space
The monitor video of time.
The terminal device that monitor video file creating apparatus that second aspect of the present invention provides, the third aspect provide, it is and upper
The monitor video document generating method of first aspect offer is stated for identical inventive concept, there is identical advantageous effect.
The monitor video document play-back method that fourth aspect present invention provides is to provide monitoring with first aspect present invention to regard
Frequency file generation method is corresponding, since the monitor video file generated according to a first aspect of the present invention deletes partial video
Frame, the monitor video document play-back method provided using fourth aspect present invention are indexed by parsing and reading to play, and according to
Reproduction time and the mapping relations are transferred corresponding video frame from the duplicate removal sets of video frames and are played out, can be to avoid
Cause the time step played due to the deletion of video frame, ensure the continuity of reproduction time, make user that can not perceive and regard
Frequency frame is deleted, so as to ensure the credibility of monitor video file.
The terminal device that monitor video file playing device that fifth aspect present invention provides, the 6th aspect provide, it is and upper
The monitor video document play-back method of fourth aspect offer is stated for identical inventive concept, there is identical advantageous effect.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this field
Technical staff will be apparent understanding.Attached drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 shows a kind of flow chart for monitor video document generating method that embodiment of the present invention is provided；
Fig. 2 shows a kind of schematic diagram for monitor video file creating apparatus that embodiment of the present invention is provided；
Fig. 3 shows a kind of schematic diagram for terminal device that embodiment of the present invention is provided；
Fig. 4 shows a kind of flow chart for monitor video document play-back method that embodiment of the present invention is provided；
Fig. 5 shows a kind of schematic diagram for monitor video file playing device that embodiment of the present invention is provided；
Fig. 6 shows the schematic diagram for another terminal device that embodiment of the present invention is provided.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although this public affairs is shown in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to be best understood from the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The scope opened completely is communicated to those skilled in the art.
It should be noted that unless otherwise indicated, the technical term or scientific terminology that the present invention uses should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
The present invention provides a kind of monitor video document generating method, device and terminal device and a kind of monitor video text
Part playback method, device and terminal device.The embodiment of the present invention is illustrated below in conjunction with the accompanying drawings.
It please refers to Fig.1, it illustrates a kind of streams for monitor video document generating method that embodiment of the present invention is provided
Cheng Tu, the monitor video document generating method comprise the following steps：
Step S101：Obtain the real-time video frame of monitoring camera shooting.
Wherein, the real-time video frame is the monitoring image of the monitoring camera captured in real-time, this step can be direct
The real-time video frame is obtained from camera or the real-time video frame is read from caching.
Step S102：The first video frame consistent with the real-time video frame is inquired about in duplicate removal sets of video frames.
Wherein, the duplicate removal sets of video frames is for storing the set of the video frame after duplicate removal, is stored in the set
Video frame is more early compared with the shooting time for the real-time video frame that step 1 obtains, therefore can be described as first video frame.It is described consistent
Also it is not necessarily completely the same, in practical operation, if the similarity of two images (i.e. video frame) is more than predetermined threshold value, i.e.,
It is consistent for can determine that the two images.
Embodiment that there are many this step S102, for example, in an embodiment of inventive embodiments, it is described in duplicate removal
Sets of video frames inquires about the first video frame consistent with the real-time video frame, including：
According to the first video frame in duplicate removal sets of video frames described in the order traversal of shooting time from the front to the back, and will be all over
The first video frame gone through is compared with the real-time video frame, until obtaining consistent with the real-time video frame comparison result
First video frame.
Wherein, the first video frame traversed is compared with the real-time video frame, can by extract it is described
First video frame and the respective bottom visual signature of the real-time video frame, such as the color of image, texture, shape, profile image
Feature, then by comparing the similarity of a kind of above-mentioned characteristics of image or a variety of characteristics of image, calculate the first video frame with
Whether the similarity of real-time video frame more than preset threshold condition judges the first video frame with regarding in real time according to the similarity
Whether frequency frame is consistent.It is described by the first video frame traversed and institute in a change embodiment of the embodiment of the present invention
It states real-time video frame to be compared, specifically include：
Image characteristics extraction is carried out to the real-time video frame and the first video frame respectively, obtains the real-time video
Frame and the respective characteristics of image of first video frame；
According to real-time video frame described in described image feature calculation and the similarity of the first video frame；
According to the similarity whether more than preset threshold condition judge the first video frame and real-time video frame whether one
It causes.
In a change embodiment of the embodiment of the present invention, described image feature includes：Color characteristic, shape feature
And textural characteristics, the extraction algorithm of each characteristics of image are exemplified below：
The color characteristic can be based on color histogram extraction algorithm and extract, for example, setting image size as M × N, M is
Image horizontal pixel quantity, N be image longitudinal direction pixel quantity, color histogram Hc, wherein c ∈ C, C are color sets, to adopt
Exemplified by rgb space color set with 16 intensity.Wherein, Ii,jRepresent the RGB color value of certain pixel in image.Then color is straight
Side's figure is HcExtraction algorithm be：
Wherein,
It is extracted in addition, the color characteristic can also be based on image key color extraction algorithm.Human eye in relatively two images,
It is good at catching respective mass-tone, the quantity of mass-tone is generally between several to tens of kinds.For example, rgb space is divided into 8 sons
Space, 8 sub-spaces represent 8 kinds of mass-tones respectively：Red (R), green (G), blue (B), yellow (R+G), purple (R+B), blue or green (G+B), black, white
(R+G+B).Specifically, the frequency of occurrences of all kinds of colors is counted after being divided to the entire rgb space of image, finds out frequency
A maximum mass-tone for being assured that image, for the identical mass-tone of ratio, is selected by the order of color value from small to large
Mass-tone.
The shape feature can pass through gray level entropy matrix algorithm and shape contour point distribution histogram PcIt obtains, specifically
Ground, image are made of pixel, the difference of the pixel occurrence number of different gray scales and its difference of distribution space position so that image
Different shapes is presented.Therefore, the entropy that image of different shapes is included is also what is be not quite similar, therefore can describe image with entropy
Shape feature, the referred to herein as image characteristics extraction algorithm based on entropy matrix.The frequency that gray scale occurs is taken as its probability,
Therefore, with shape contour point distribution histogram statistics gray scale frequency and color histogram statistical method be it is completely the same,
Slightly different to be that color set C is gray scale herein, only there are one dimension, 256 gray values.The shape feature, that is, entropy e's
Extraction algorithm is：
E=- ∑sc∈CPclog2Pc
Wherein,
The textural characteristics can be obtained by the Texture Segmentation Algorithm converted based on Radon：
(1) Radon conversion is carried out to pending image (i.e. real-time video frame, first video frame), obtains Rf matrixes, Rf is
The projection matrix of all angular direction compositions in Radon domains；
(2) each row of Rf matrixes are carried out with 3 layers of dual-tree complex wavelet transform, symbiosis is into 9 high-frequency sub-bands and 1 low frequency
Band；
(3) average (M), variance (σ), energy (E) of each subband are calculated, more than 10 subbands average, variance and energy
Just generate the feature vector of 1 dimension, i-th layer of average, variance, energy are respectively：
(4) then the feature vector of the textural characteristics is：
F=(M1,σ1,E1,M2,σ2,E2,……M10,σ10,E10,)
After color characteristic, shape feature and textural characteristics this 3 kinds of characteristics of image are extracted, you can calculate the reality accordingly
When video frame and the first video frame similarity, specifically, can be that each characteristics of image sets corresponding weight, then
The similarity of characteristics of image is calculated respectively, and last weighted average obtains total similarity, regarded in real time using total similarity as described
Frequency frame and the similarity of the first video frame.
Wherein, the calculating of the similarity of each characteristics of image may be employed Euclidean distance, Pasteur's distance, manhatton distance etc. into
Row calculates, these are common similarity calculating method of the prior art, are no longer repeated one by one herein.
It is considered that if the first video frame consistent with the real-time video frame is inquired about in duplicate removal sets of video frames each time
When, all using the method for the above embodiment offer, extract the characteristics of image of each first video frame again successively and be compared,
It is clearly less efficient, therefore, the characteristics of image of extracted each first video frame can be preserved in the form of a tree,
The characteristics of image tree of the duplicate removal sets of video frames is obtained, in subsequent query, it is only necessary to which the image for extracting real-time video frame is special
Sign, is then compared the phase that can determine real-time video frame and first video frame with the characteristics of image in described image characteristics tree
Like degree, so as to improve comparison and search efficiency on the whole, ensure that shooting for monitor video is same with first video frame query process
Step, correspondingly, in an embodiment of inventive embodiments, it is described in the inquiry of duplicate removal sets of video frames and the real-time video
The consistent first video frame of frame, including：
Extract the characteristics of image of the real-time video frame；
The characteristics of image tree of the duplicate removal sets of video frames is traveled through, inquires about regarding in real time from described image characteristics tree with described
The consistent characteristics of image of the characteristics of image of frequency frame, determine the corresponding first video frame of the described image feature inquired be with it is described
The consistent first video frame of real-time video frame, wherein, record has each in the duplicate removal sets of video frames in described image characteristics tree
The characteristics of image of first video frame.
Wherein, extract the characteristics of image of the real-time video frame method can refer to it is above-mentioned to color characteristic, shape feature,
The extracting method of textural characteristics, the uniformity of characteristics of image can determine that similarity is more than pre- according to the similarity of characteristics of image
If threshold value then judges that two characteristics of image are consistent, and then determines the first video frame consistent with the real-time video frame, herein not
It repeats and repeats.
In this step S102, by the characteristics of image for extracting three color characteristic, shape feature and textural characteristics dimensions
And the similarity of comprehensive descision real-time video frame and first video frame, can more accurately judge the real-time video frame with
The uniformity of first video frame realizes the real-time video frame more accurately duplicate removal, while can sensitively find to regard in real time to repeating
Frequency frame and the difference of first video frame, and will there is different real-time video frames to preserve, ensure that monitor video file can be true
Real record monitoring situation.
Step S103：If the first video frame consistent with the real-time video frame is not inquired, by the real-time video
Frame is saved into the duplicate removal sets of video frames, and the reflecting between recording played time and the real-time video frame in index is played
Penetrate relation.
Step S104：If inquiring the first video frame consistent with the real-time video frame, the real-time video frame is abandoned,
And the mapping relations in index is played between recording played time and the first video frame.
Due to the size of monitor video file be mainly by video frame number determine, do not reducing the feelings of image quality
Under condition, the size of monitor video file can be significantly reduced by the quantity for reducing the video frame preserved, therefore, in step S102
On the basis of the image consistency comparison for carrying out video frame, this step S104, which passes through, abandons the video frame that part repeats, Ke Yiyou
Effect reduces the size of the monitor video file ultimately generated, extends the duration for the monitor video that monitoring device can be recorded.
But the video frame repeated due to having abandoned part, can preserve in the monitor video ultimately generated file and take the photograph
As all monitoring images that head is shot, if being not provided with playing index and broadcasting still according to the mode played frame by frame in the prior art
Put the monitor video file, the discontinuous of reproduction time can be caused, for example, certain monitored picture in 1:00 AM to all keeping between 6 points
It is constant, if simply simply all video frame gathered in this period all abandoned, then the monitor video file of generation
It directly can jump at 6 points from 1 point when playing, give people the mistake that a kind of monitored picture of this time is caused artificially to be deleted
Feel, so can seriously reduce the credibility of the monitor video file.
It is reduced in order to which monitor video is credible caused by solving the problems, such as reproduction time jump, method introduces play rope
Regard it as the mapping relations between recording played time and video frame, the index that plays is recorded by clue of time shaft, with
Ensure the continuity of reproduction time, within the period for abandoning video frame, reproduction time be mapped in the video frame preserved,
So that monitor video file can keep continuous picture when playing, still with all of above-mentioned 1:00 AM to 6 points of acquisitions
In case of video frame all abandons, all moment between 1 point to 6 points can be mapped at 1 point in index is played and adopted
In the video frame of collection, in this way, transferring with reproduction time and regarding accordingly according to the mapping relations recorded in index are played when playing
Frequency frame plays out, and thereby may be ensured that the continuity of reproduction time, makes user that can not perceive the video frame in this time
It has been be deleted that, not only available energy enough reduced the size of the monitor video file ultimately generated, but also can ensure monitor video file
It is credible.
It should be noted that the step S103 and step S104 is step arranged side by side, during monitoring, according to step
S102 performs step S103 or S104 to the query result triggering of each real-time video frame, during the broadcasting indexes, had both recorded and has broadcast
The mapping relations between time and the real-time video frame are put, also record has reflecting between reproduction time and the first video frame
Penetrate relation, in the monitor video file ultimately generated, it is described play index in record have multiple reproduction times with it is same formerly
Mapping relations between video frame.
Step S105：Monitor video file is generated according to the duplicate removal sets of video frames and the index that plays.
This step can be periodically generated monitor video file, for example, passing through abovementioned steps S101- by foundation of the time
S104 can keep in the duplicate removal sets of video frames and broadcasting index in cache file folder, from cache file when 6 is small
The duplicate removal sets of video frames preserved in this 6 hours is transferred in folder and is played and is indexed, is packaged into monitor video file.
The repetition video frame deleted in view of the embodiment of the present invention occurs mainly in the special occasions such as night, in most cases
Continuity with the time, if being that foundation is periodically generated monitor video file according to the time, the monitoring that may be generated at night
The monitor video file storage that video file can be generated with daytime differs greatly, therefore, at one of the embodiment of the present invention
It changes in embodiment, before step S105, further includes：
Calculate the estimated memory space of the duplicate removal sets of video frames；
Judge whether the estimated memory space meets default file unloading condition, gone when meeting described in triggering basis
Weight sets of video frames and the index that plays generate monitor video file.
Wherein, the estimated memory space of the duplicate removal sets of video frames is calculated, it can be by adding up duplicate removal sets of video frames
In video frame file size, along with being estimated roughly to play the reserved memory space of index；It is described default
File unloading condition can be a threshold condition, for example, when the estimated memory space reaches 1GB, that is, trigger according to institute
It states duplicate removal sets of video frames and the index that plays generates monitor video file.By the change embodiment, can to deposit
The size of each monitor video file after storage is relatively uniform, convenient for preservation, unloading and management.
It is considered that the main application of monitor video file is that history traces, to find out the truth, in order to avoid illegal
Molecule distorts the monitor video file with the truth that covers up facts, the embodiment of the present invention, on the one hand, hash algorithm meter may be employed
The cryptographic Hash of each video frame in the duplicate removal sets of video frames is calculated, and described play of cryptographic Hash write-in is indexed, to avoid
Criminal distorts the monitoring by replacing or changing some or multiple video frame in the duplicate removal sets of video frames
Video file；On the other hand anti-tamper processing can also be carried out to the index that plays, to avoid criminal by changing
It states broadcasting index and distorts the monitor video file, for example, can be broadcast when needing to generate monitor video file according to described
The local generated time stamp of index is put or to timestamp certification authority application time stamp, then according to the timestamp, the broadcasting
Index and duplicate removal sets of video frames encapsulation generation monitor video file, so as to effectively criminal be avoided to pass through described in modification
It plays index and distorts the monitor video file.
More than, it is that a kind of embodiment of monitor video document generating method provided by the invention illustrates, the embodiment of the present invention
By abandoning the real-time video frame consistent with first video frame, so as to fulfill the duplicate removal to the video frame repeated, can effectively drop
The size of the low monitor video file ultimately generated so that monitoring device can store longer under conditions of similary memory space
The monitor video of time in addition, by the way that broadcasting is set to index and establishes the mapping relations of reproduction time and video frame, can use
Family can not perceive repetition video frame and be deleted, so as to ensure the credibility of monitor video file.
In the above-described embodiment, a kind of monitor video document generating method is provided, corresponding, the present invention is also
A kind of monitor video file creating apparatus is provided.It please refers to Fig.2, a kind of monitor video provided by embodiment of the present invention
The schematic diagram of file creating apparatus.Since device embodiment is substantially similar to embodiment of the method, so describe fairly simple, phase
Part is closed referring to the part of embodiment of the method to illustrate.Device embodiment described below is only schematical.
As shown in Fig. 2, a kind of monitor video file creating apparatus 2 provided in an embodiment of the present invention, including：
Real-time video frame acquisition module 21, for obtaining the real-time video frame of monitoring camera shooting；
Repeat video frame enquiry module 22, for the inquiry of duplicate removal sets of video frames it is consistent with the real-time video frame
First video frame；
Real-time video frame memory module 23, if for not inquiring the first video frame consistent with the real-time video frame,
The real-time video frame is then saved into the duplicate removal sets of video frames, and recording played time and the reality in index is played
When video frame between mapping relations；
Real-time video frame discard module 24, if for inquiring the first video frame consistent with the real-time video frame,
Abandon the real-time video frame, and the mapping relations in index is played between recording played time and the first video frame；
Video file generation module 25, for being regarded according to the duplicate removal sets of video frames and the broadcasting index generation monitoring
Frequency file.
It is described to repeat video frame enquiry module 22 in a change embodiment of the embodiment of the present invention, including：
Video frame comparing unit, for according in duplicate removal sets of video frames described in shooting time order traversal from the front to the back
First video frame, and the first video frame traversed is compared with the real-time video frame, until obtaining and the reality
When the consistent first video frame of video frame comparison result.
It is described to repeat video frame enquiry module 22 in another change embodiment of the embodiment of the present invention, including：
Image characteristics extraction unit, for extracting the characteristics of image of the real-time video frame；
Image feature comparison unit, it is special from described image for traveling through the characteristics of image tree of the duplicate removal sets of video frames
The characteristics of image consistent with the characteristics of image of the real-time video frame is inquired about in sign tree, determines the described image feature pair inquired
The first video frame answered is the first video frame consistent with the real-time video frame, wherein, there is record in described image characteristics tree
The characteristics of image of each first video frame in the duplicate removal sets of video frames.
Another in the embodiment of the present invention changes embodiment, and the monitor video file creating apparatus 2 also wraps
It includes：
It is expected that memory space estimation block, for calculating the estimated memory space of the duplicate removal sets of video frames；
Unloading judgment module for judging whether the estimated memory space meets default file unloading condition, is according with
Triggering generates monitor video file according to the duplicate removal sets of video frames and the index that plays during conjunction.
In another change embodiment of the embodiment of the present invention, the monitor video file creating apparatus 2 also wraps
It includes：
Cryptographic Hash computing module, for calculating each video frame preserved in the duplicate removal sets of video frames using hash algorithm
Cryptographic Hash；
Cryptographic Hash logging modle, for described play of cryptographic Hash write-in to be indexed.
Monitor video file creating apparatus 2 provided in an embodiment of the present invention, the monitoring provided with present invention
Video file generation method has identical advantageous effect for identical inventive concept.
In the above-described embodiment, a kind of monitor video document generating method and device are provided, it is corresponding, this
Invention also provides a kind of terminal device, the terminal device can be monitoring device or with monitoring camera by having
Line mode or the monitor video management equipment of wireless mode connection etc., can be independent computing device or distribution
Formula server cluster etc..It please refers to Fig.3, Fig. 3 is a kind of schematic diagram of terminal device provided in an embodiment of the present invention.Such as Fig. 3 institutes
Show, the terminal device 3 includes：Processor 30, memory 31, bus 32 and communication interface 33, the processor 30, communication connect
Mouth 33 and memory 31 are connected by bus 32；The calculating that can be run on the processor 30 is stored in the memory 31
Machine program, the processor 30 perform monitor video document generating method provided by the invention when running the computer program.
Wherein, memory 31 may include high-speed random access memory (RAM：Random Access Memory),
Non-labile memory (non-volatile memory), for example, at least a magnetic disk storage may be further included.By extremely
A few communication interface 33 (can be wired or wireless) is realized logical between the system network element and at least one other network element
Letter connection can use internet, wide area network, local network, Metropolitan Area Network (MAN) etc..
Bus 32 can be isa bus, pci bus or eisa bus etc..The bus can be divided into address bus, data
Bus, controlling bus etc..Wherein, memory 31 is for storing program, and the processor 30 performs after receiving and executing instruction
Described program, the monitor video document generating method that foregoing any embodiment of the embodiment of the present invention discloses can be applied to
It is realized in processor 30 or by processor 30.
Processor 30 may be a kind of IC chip, have the processing capacity of signal.During realization, above-mentioned side
Each step of method can be completed by the integrated logic circuit of the hardware in processor 30 or the instruction of software form.Above-mentioned
Processor 30 can be general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network
Processor (Network Processor, abbreviation NP) etc.；It can also be digital signal processor (DSP), application-specific integrated circuit
(ASIC), ready-made programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components.It can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general
Processor can be microprocessor or the processor can also be any conventional processor etc..With reference to institute of the embodiment of the present invention
The step of disclosed method, can be embodied directly in hardware decoding processor and perform completion or with the hardware in decoding processor
And software module combination performs completion.Software module can be located at random access memory, and flash memory, read-only memory may be programmed read-only
In the storage medium of this fields such as memory or electrically erasable programmable memory, register maturation.The storage medium is located at
The step of memory 31, processor 30 reads the information in memory 31, the above method is completed with reference to its hardware.
Terminal device provided in an embodiment of the present invention goes out with monitor video document generating method provided in an embodiment of the present invention
In identical inventive concept, there is identical advantageous effect.
Corresponding with the monitor video document generating method provided in an embodiment of the present invention, the embodiment of the present invention also provides
A kind of monitor video document play-back method, please refers to Fig.4, and it illustrates a kind of monitor videos that embodiment of the present invention is provided
The flow chart of document play-back method, the monitor video document play-back method provided in an embodiment of the present invention are carried with previous embodiment
The monitor video document generating method of confession is corresponding, and the record that related content can refer to previous embodiment is understood, herein
It is only briefly described, as shown in figure 4, the monitor video document play-back method comprises the following steps：
Step S401：Monitor video file to be played is parsed, obtains playing index and duplicate removal sets of video frames.
Step S402：It reads described play to index, obtains the reproduction time recorded in the broadcasting index and the duplicate removal
The mapping relations of corresponding video frame in sets of video frames.Wherein, it is described play index in record have multiple reproduction times with it is same
Mapping relations between a video frame.
Step S403：It transfers from the duplicate removal sets of video frames according to reproduction time and the mapping relations and regards accordingly
Frequency frame plays out.
Monitor video document play-back method provided in an embodiment of the present invention is to provide monitoring with present invention to regard
Frequency file generation method is corresponding, is regarded since the monitor video file of previous embodiment generation according to the present invention deletes part
Frequency frame using monitor video document play-back method provided in an embodiment of the present invention, is indexed by parsing and reading to play, and according to
Reproduction time and the mapping relations are transferred corresponding video frame from the duplicate removal sets of video frames and are played out, can be to avoid
Cause the time step played due to the deletion of video frame, ensure the continuity of reproduction time, make user that can not perceive and regard
Frequency frame is deleted, so as to ensure the credibility of monitor video file.
In the above-described embodiment, a kind of monitor video document play-back method is provided, corresponding, the present invention is also
A kind of monitor video file playing device is provided.Fig. 5 is refer to, a kind of monitor video provided by embodiment of the present invention
The schematic diagram of file playing device.Since device embodiment is substantially similar to embodiment of the method, so describe fairly simple, phase
Part is closed referring to the part of embodiment of the method to illustrate.Device embodiment described below is only schematical.
As shown in figure 5, a kind of monitor video file playing device 5 provided in an embodiment of the present invention, including：
Monitor video document analysis module 51 for parsing monitor video file to be played, is obtained playing index and gone
Weight sets of video frames；
Index read module 52 is played, is indexed for reading described play, obtains the broadcasting for playing and being recorded in index
Time and the mapping relations of corresponding video frame in the duplicate removal sets of video frames；
Playing module 53, for transferring phase from the duplicate removal sets of video frames according to reproduction time and the mapping relations
The video frame answered plays out.
Monitor video file playing device provided in an embodiment of the present invention, the monitoring provided with present invention regard
Frequency file playback method has identical advantageous effect for identical inventive concept.
In the above-described embodiment, a kind of monitor video document play-back method and device are provided, it is corresponding, this
Invention also provides a kind of terminal device, the terminal device can be have playing function monitoring device or with prison
The monitor video management equipment that camera is connected by wired mode or wireless mode is controlled, can also be such as computer, mobile phone, put down
Plate computer etc. has the computing device of playing function.Fig. 6 is refer to, Fig. 6 is a kind of terminal device provided in an embodiment of the present invention
Schematic diagram.As shown in fig. 6, the terminal device 6 includes：Processor 60, memory 61, bus 62 and communication interface 63, institute
Processor 60, communication interface 63 and memory 61 is stated to connect by bus 62；Being stored in the memory 61 can be at the place
The computer program run on reason device 60, the processor 60 perform monitoring provided by the invention when running the computer program
Video file broadcasting method.
Wherein, memory 61 may include high-speed random access memory (RAM：Random Access Memory),
Non-labile memory (non-volatile memory), for example, at least a magnetic disk storage may be further included.By extremely
A few communication interface 63 (can be wired or wireless) is realized logical between the system network element and at least one other network element
Letter connection can use internet, wide area network, local network, Metropolitan Area Network (MAN) etc..
Bus 62 can be isa bus, pci bus or eisa bus etc..The bus can be divided into address bus, data
Bus, controlling bus etc..Wherein, memory 61 is for storing program, and the processor 60 performs after receiving and executing instruction
Described program, the monitor video document play-back method that foregoing any embodiment of the embodiment of the present invention discloses can be applied to
It is realized in processor 60 or by processor 60.
Processor 60 may be a kind of IC chip, have the processing capacity of signal.During realization, above-mentioned side
Each step of method can be completed by the integrated logic circuit of the hardware in processor 60 or the instruction of software form.Above-mentioned
Processor 60 can be general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network
Processor (Network Processor, abbreviation NP) etc.；It can also be digital signal processor (DSP), application-specific integrated circuit
(ASIC), ready-made programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components.It can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general
Processor can be microprocessor or the processor can also be any conventional processor etc..With reference to institute of the embodiment of the present invention
The step of disclosed method, can be embodied directly in hardware decoding processor and perform completion or with the hardware in decoding processor
And software module combination performs completion.Software module can be located at random access memory, and flash memory, read-only memory may be programmed read-only
In the storage medium of this fields such as memory or electrically erasable programmable memory, register maturation.The storage medium is located at
The step of memory 61, processor 60 reads the information in memory 61, the above method is completed with reference to its hardware.
Terminal device provided in an embodiment of the present invention goes out with monitor video document play-back method provided in an embodiment of the present invention
In identical inventive concept, there is identical advantageous effect.
It should be noted that the flow chart and block diagram in attached drawing show multiple embodiments according to the present invention system,
Architectural framework in the cards, function and the operation of method and computer program product.In this regard, in flow chart or block diagram
Each box can represent a part for a module, program segment or code, the part bag of the module, program segment or code
The executable instruction of defined logic function is used to implement containing one or more.It should also be noted that at some as the reality replaced
In existing, the function of being marked in box can also be occurred with being different from the order marked in attached drawing.For example, two continuous sides
Frame can essentially perform substantially in parallel, they can also be performed in the opposite order sometimes, this according to involved function and
It is fixed.It is also noted that the group of each box in block diagram and/or flow chart and the box in block diagram and/or flow chart
It closes, function or the dedicated hardware based system of action can realize as defined in execution or specialized hardware can be used
Combination with computer instruction is realized.
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, and details are not described herein.
In several embodiments provided by the present invention, it should be understood that disclosed apparatus and method can pass through it
Its mode is realized.The apparatus embodiments described above are merely exemplary, for example, the division of the unit, is only
A kind of division of logic function can have other dividing mode in actual implementation, in another example, multiple units or component can combine
Or it is desirably integrated into another system or some features can be ignored or does not perform.Another, shown or discussed phase
Coupling, direct-coupling or communication connection between mutually can be by some communication interfaces, the INDIRECT COUPLING of device or unit or
Communication connection can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That unit is individually physically present, can also two or more units integrate in a unit.
If the function is realized in the form of SFU software functional unit and is independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words
The part contribute to the prior art or the part of the technical solution can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, is used including some instructions so that a computer equipment (can be
People's computer, server or network equipment etc.) perform all or part of the steps of the method according to each embodiment of the present invention.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the present invention technology
The scope of scheme should all cover among the claim of the present invention and the scope of specification.
Claims (10)
1. a kind of monitor video document generating method, which is characterized in that including：
Obtain the real-time video frame of monitoring camera shooting；
The first video frame consistent with the real-time video frame is inquired about in duplicate removal sets of video frames；
If not inquiring the first video frame consistent with the real-time video frame, the real-time video frame is saved into described go
Weight sets of video frames, and the mapping relations in index is played between recording played time and the real-time video frame；
If inquiring the first video frame consistent with the real-time video frame, the real-time video frame is abandoned, and is indexed playing
Mapping relations between middle recording played time and the first video frame；
Monitor video file is generated according to the duplicate removal sets of video frames and the index that plays.
2. monitor video document generating method according to claim 1, which is characterized in that described in duplicate removal sets of video frames
The inquiry first video frame consistent with the real-time video frame, including：
According to the first video frame in duplicate removal sets of video frames described in the order traversal of shooting time from the front to the back, and will traverse
First video frame be compared with the real-time video frame, until obtain it is consistent with the real-time video frame comparison result
First video frame.
3. monitor video document generating method according to claim 1, which is characterized in that described in duplicate removal sets of video frames
The inquiry first video frame consistent with the real-time video frame, including：
Extract the characteristics of image of the real-time video frame；
The characteristics of image tree of the duplicate removal sets of video frames is traveled through, inquiry and the real-time video frame from described image characteristics tree
The consistent characteristics of image of characteristics of image, determine the corresponding first video frame of the described image feature inquired be with it is described in real time
The consistent first video frame of video frame, wherein, record has each first in the duplicate removal sets of video frames in described image characteristics tree
The characteristics of image of video frame.
4. monitor video document generating method according to claim 1, which is characterized in that according to the duplicate removal video frame
Set and described play are indexed before generating monitor video file, are further included：
Calculate the estimated memory space of the duplicate removal sets of video frames；
Judge whether the estimated memory space meets default file unloading condition, go to pay attention to described in triggering basis when meeting
Frequency frame set and the index that plays generate monitor video file.
5. monitor video document generating method according to claim 1, which is characterized in that according to the duplicate removal video frame
Set and described play are indexed before generating monitor video file, are further included：
The cryptographic Hash of each video frame preserved in the duplicate removal sets of video frames is calculated using hash algorithm；
Described play of cryptographic Hash write-in is indexed.
6. a kind of monitor video file creating apparatus, which is characterized in that including：
Real-time video frame acquisition module, for obtaining the real-time video frame of monitoring camera shooting；
Video frame enquiry module is repeated, for inquiring about the first video consistent with the real-time video frame in duplicate removal sets of video frames
Frame；
Real-time video frame memory module, if for not inquiring the first video frame consistent with the real-time video frame, by institute
It states real-time video frame and is saved into the duplicate removal sets of video frames, and recording played time and the real-time video in index is played
Mapping relations between frame；
Real-time video frame discard module, if for inquiring the first video frame consistent with the real-time video frame, abandoning should
Real-time video frame, and the mapping relations in index is played between recording played time and the first video frame；
Video file generation module, for generating monitor video text according to the duplicate removal sets of video frames and the index that plays
Part.
7. a kind of terminal device, including：It memory, processor and is stored on the memory and can transport on the processor
Capable computer program, which is characterized in that any one of perform claim requirement 1-5 when the processor runs the computer program
The monitor video document generating method.
8. a kind of monitor video document play-back method, which is characterized in that including：
Monitor video file to be played is parsed, obtains playing index and duplicate removal sets of video frames；
It reads described play to index, obtains the reproduction time recorded in the broadcasting index and phase in the duplicate removal sets of video frames
Answer the mapping relations of video frame；
Corresponding video frame is transferred according to reproduction time and the mapping relations from the duplicate removal sets of video frames to play out.
9. a kind of monitor video file playing device, which is characterized in that including：
Monitor video document analysis module for parsing monitor video file to be played, obtains playing index and duplicate removal video
Frame set；
Play index read module, for read it is described play index, obtain it is described play in index the reproduction time that records with
The mapping relations of corresponding video frame in the duplicate removal sets of video frames；
Playing module regards accordingly for being transferred according to reproduction time and the mapping relations from the duplicate removal sets of video frames
Frequency frame plays out.
10. a kind of terminal device, including：It memory, processor and is stored on the memory and can be on the processor
The computer program of operation, which is characterized in that when the processor runs the computer program described in perform claim requirement 8
Monitor video document play-back method.
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