CN103870577A - Method and device for automatically identifying and judging important media files of law enforcement recording instrument - Google Patents
Method and device for automatically identifying and judging important media files of law enforcement recording instrument Download PDFInfo
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Abstract
The invention relates to a method and a device for automatically identifying and judging important media files of a law enforcement recording instrument. The method comprises the following steps that media files in a memory of the law enforcement recording instrument and picture files generated when law enforcement officers trigger a photo taking press key of the law enforcement recording instrument are read; the shooting starting time of the picture files is used for subtracting the preset calibration time to obtain the first comparison time, in addition, the media files with the shooting starting time being smaller than the first comparison time and with the shooting ending time being greater than the first comparison time are recorded as first important media files; the shooting starting time of the picture files is added to the preset calibration time to obtain the second comparison time, and in addition, the media files with the shooting starting time being smaller than the second comparison time and with the shooting ending time being greater than the second comparison time are recorded as second important media files; the first important media files and the second important media files are correlated, and the important degree grade is marked. The method and the device provided by the invention have the beneficial effects that the operation is simple, the efficiency is high, and the cost is low.
Description
Technical field
The present invention relates to computer program, be specifically related to the judgment technology of the data importance of law-enforcing recorder.
Background technology
Current each ministries and commissions widely popularize single police crime scene investigation device in traffic, municipal administration, procuratorate, industrial and commercial bureau, the use in the administrative law enforcement fields such as Land and Resources Bureau, require law enfrocement official in enforcing law, to wear crime scene investigation device real time record enforcing law, and form video, audio frequency, the media files such as image, after having enforced the law, law enfrocement official can be transferred to the media file that every day, law enforcement was taken in data center's disk array and store, the video council of law enforcement is divided into two large classes: a class is useful video, the video that represents this section of time shooting is to record accident generation or the generation of disputable law enforcement situation, as: delay penalty, traffic hazard etc., and an other class is video file useless, the just process on duty of a normal recordings law enfrocement official period at ordinary times.
But because law enfrocement official is numerous, the video data that take every day is too many, file is all that collection is deposited, the video file of 20 minutes is up to more than 2G, so data center needs the disk space of magnanimity and enough broadbands could meet the transmission of these files and deposit, in fact most of video on duty can be without uploading data center, only need to leave the disk space of acquisition station in temporarily, only need to preserve the short time, just transfer from the inside if necessary, can save so a large amount of disk spaces and bandwidth.
But because enforcement officer is at enforcing law, when really meeting with an accidet with accident, it is useful having no time to allow slowly to arrange which video at all, which video file is useless, so all videos that law enfrocement official takes are all transferred in server, differentiate whether these videos are useful needs manually to open one by one broadcasting, after understanding video content, whether manual this video of mark is useful again, so not only expend a large amount of disk spaces and deposit these useless video files, also need to expend a large amount of manpowers and time and judge that whether video file is useful.
Therefore whether usefully researching and developing the captured video of a kind of method solution automatic decision law enfrocement official, is the technical barrier that current urgent need will solve.
Summary of the invention
The object of the invention is to propose the important media file of a kind of law-enforcing recorder and automatically identify determination methods, it can solve the whether important problem of automatic decision media file.
In order to achieve the above object, the technical solution adopted in the present invention is as follows:
The important media file of law-enforcing recorder is identified determination methods automatically, and it comprises the following steps:
Step 1, read media file in the storer of law-enforcing recorder and trigger the picture file that the button of taking pictures of law-enforcing recorder produces because of law enfrocement official;
Step 2, the beginning shooting time of described picture file is deducted to the default alignment time obtain the first comparison time, and be less than the first comparison time and finish the media file that shooting time is greater than the first comparison time and be designated as the first important media file starting shooting time; The beginning shooting time of described picture file is added to the default alignment time obtains the second comparison time, and be less than the second comparison time and finish the media file that shooting time is greater than the second comparison time and be designated as the second important media file starting shooting time;
Step 3, the first important media file and the second important media file are carried out associated and identify default importance degree grade.
Preferably, described media file and picture file all have the unique identification information of described law-enforcing recorder, carry out so that the time of picture file and media file is compared the file all producing for same law-enforcing recorder.
Preferably, the beginning shooting time of media file and end shooting time, and the beginning shooting time of picture file is all stored in a database with end shooting time.
The present invention also proposes the important media file of a kind of law-enforcing recorder corresponding with said method and automatically identifies judgment means, and it comprises with lower module:
Read module, for read law-enforcing recorder storer media file and trigger the picture file that the button of taking pictures of law-enforcing recorder produces because of law enfrocement official;
Comparing module, obtain the first comparison time for the beginning shooting time of described picture file is deducted to the default alignment time, and be less than the first comparison time and finish the media file that shooting time is greater than the first comparison time and be designated as the first important media file starting shooting time; The beginning shooting time of described picture file is added to the default alignment time obtains the second comparison time, and be less than the second comparison time and finish the media file that shooting time is greater than the second comparison time and be designated as the second important media file starting shooting time;
Identification module, for carrying out associated and identifying default importance degree grade to the first important media file and the second important media file.
The present invention also proposes the important media file of another kind of law-enforcing recorder and automatically identifies determination methods, and it comprises the following steps:
Step 1, read media file in the storer of law-enforcing recorder and because law enfrocement official triggers the text that the button of taking pictures of law-enforcing recorder produces, described text records to be taken the end time before it and takes the filename of start time at two media files thereafter;
Step 2, read the filename of two media files in described text;
Step 3, will carry out associated and identify default importance degree grade with two media files of the filename coupling of described two media files.
Preferably, described media file and text all have the unique identification information of described law-enforcing recorder, carry out so that the title of text and media file is compared the file all producing for same law-enforcing recorder.
Preferably, the beginning shooting time of media file and end shooting time are stored in a database.
The present invention also proposes the law-enforcing recorder important media file corresponding with above-mentioned another kind of method and automatically identifies judgment means, and it comprises with lower module:
The first read module, for read law-enforcing recorder storer media file and because law enfrocement official triggers the text that the button of taking pictures of law-enforcing recorder produces, described text records to be taken the end time before it and takes the filename of start time at two media files thereafter;
The second read module, for reading the filename of two media files of described text;
Identification module, for carrying out associated and identify default importance degree grade with two media files of the filename coupling of described two media files.
Above-mentioned media file is video file or audio file.
The present invention has following beneficial effect:
Can automatically identify the useful or important media file in the captured broad medium file of law-enforcing recorder, needn't artificial screening and mark, there is effect simple to operate, that efficiency is high, cost is low, can save a large amount of human costs and carrying cost.
Accompanying drawing explanation
Fig. 1 is the process flow diagram that the important media file of the law-enforcing recorder of the embodiment of the present invention one is identified determination methods automatically;
Fig. 2 is the theory diagram that the important media file of the law-enforcing recorder of the embodiment of the present invention one is identified judgment means automatically;
Fig. 3 is the process flow diagram that the important media file of the law-enforcing recorder of the embodiment of the present invention two is identified determination methods automatically;
Fig. 4 is the theory diagram that the important media file of the law-enforcing recorder of the embodiment of the present invention two is identified judgment means automatically.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the present invention is described further.
Embodiment mono-
When law enfrocement official uses law-enforcing recorder capture video, if think that the video of taking is at present very important, can be in capture video, press " taking pictures " button, law-enforcing recorder can produce a photo in the process of capture video like this, this photo can be used as the signal of an important video file, by software algorithm, thereby realize carrying out the associated video file of shooting during this period of time by this signal file and reaching the object that video that judgement takes is during this period of time important video file.
We know that single shooting camera once can only take a picture, if so law-enforcing recorder need to be taken a photo in capture video process simultaneously, the video that law-enforcing recorder camera must interrupt taking, first the video file of taking is write in the storage card of law-enforcing recorder, form an independently video file, and then the photo of taking pictures, after taking pictures and having moved, clapped photo is also stored in storage card, complete after storage picture, the video capture task of interrupting will be continued to start to carry out, until receive shooting the finish command, just finally the video that continues to take after interrupting is saved as to the new file of another one.But whole process: capture video---> takes pictures---> continues capture video, the time of midway taking pictures is very of short duration, allow user feel, seem that whole section of process similarly is all the same in capture video, in fact whole shooting process is owing to interrupting midway, will produce three files, be respectively video file before taking a picture, mark pictures file, taken the video file that photo continuation is taken.
Based on aforesaid operations and principle, take video file as example, the solution of the present invention is described below.
As shown in Figure 1, the important media file of law-enforcing recorder is identified determination methods automatically, and it comprises the following steps:
Step S11, read video file in the storer of law-enforcing recorder and trigger the picture file that the button of taking pictures of law-enforcing recorder produces because of law enfrocement official.In addition, can also and finish shooting time by the beginning shooting time of video file and picture file and be converted to standard format: " when year-month-day: point: second ", it should be noted that, before law-enforcing recorder upload file, can not edit the file in its storer, in order to avoid the end shooting time of video file and picture file is updated.Wherein, after video file in storer and picture file are read, the beginning shooting time of video file and end shooting time, and the beginning shooting time of picture file and finish shooting time and all must first be saved in database, avoid the other storage of file and change the raw information of file.
Step S12, the beginning shooting time of described picture file is deducted to the default alignment time (as 10 seconds) obtain the first comparison time, and be less than the first comparison time and finish the video file that shooting time is greater than the first comparison time and be designated as the first important media file starting shooting time; The beginning shooting time of described picture file is added to the default alignment time obtains the second comparison time, and be less than the second comparison time and finish the video file that shooting time is greater than the second comparison time and be designated as the second important media file starting shooting time.
Step S13, the first important media file and the second important media file are carried out associated and identify default importance degree grade.After having identified, just video file can be stored in the disk array of data center.Wherein, described importance degree grade comprises concern, general and serious, be defaulted as concern, also can modify to importance degree grade according to the type of service of video file (as accident, violating the regulations etc.), the storage time of different importance degree grades in disk array is different, as: concern is 60 days, is generally 30 days, is seriously 90 days.
Wherein, described video file and picture file all have the unique identification information (being the numbering of law-enforcing recorder) of described law-enforcing recorder, carry out so that the time of picture file and video file is compared the file all producing for same law-enforcing recorder, thereby avoided causing identification error because of the video file that different law-enforcing recorders were taken in the close time.
As shown in Figure 2, the present embodiment also proposes the important media file of a kind of law-enforcing recorder and automatically identifies judgment means, and it comprises with lower module:
Read module, for read law-enforcing recorder storer video file and trigger the picture file that the button of taking pictures of law-enforcing recorder produces because of law enfrocement official;
Comparing module, obtain the first comparison time for the beginning shooting time of described picture file is deducted to the default alignment time, and be less than the first comparison time and finish the video file that shooting time is greater than the first comparison time and be designated as the first important media file starting shooting time; The beginning shooting time of described picture file is added to the default alignment time obtains the second comparison time, and be less than the second comparison time and finish the video file that shooting time is greater than the second comparison time and be designated as the second important media file starting shooting time;
Identification module, for carrying out associated and identifying default importance degree grade to the first important media file and the second important media file.
Below, with concrete case, the present embodiment is described.
Suppose that 11: 28: 20 on the 10th February in 2014, traffic police just processed a traffic hazard, he records whole processing procedure by law-enforcing recorder on the accident of processing on one side one side conventionally, if whole processing procedure is 20 minutes, after beginning director event, first open capture video, suppose to have taken 2 minutes, at this time the time is 11: 32: 40 on the 10th February in 2014, traffic police thinks that the video of current accident shooting is important, traffic police first presses the button of taking pictures, at this moment law-enforcing recorder can produce video file as 20140210113240.mp4, take a photo, at this time law-enforcing recorder can produce picture file as 20140210113241.jpg, then traffic police continues to handle accident, after finishing dealing with, click end key, the video of follow-up bat will be saved in the storer of law-enforcing recorder, can produce a file 20140210115015.mp4.
It is 20 minutes that 2 video files are added up, the shooting time of these three files and finish shooting time respectively:
First paragraph video file: 20140210113240.mp4, it starts shooting time and is: 2014 02 month 11: 28: 20 on the 10th, finish shooting time and be: 2014 02 month 11: 32: 40 on the 10th;
For the picture file that identifies: 20140210113241.jpg, it starts shooting time and is: 2014 02 month 11: 32: 41 on the 10th, finish shooting time and be: 2014 02 month 11: 32: 41 on the 10th;
Second segment video file: 20140210115015.mp4, beginning shooting time is: 2014 02 month 11: 32: 42 on the 10th, end shooting time was: 2014 02 month 11: 50: 15 on the 10th.
Independently these three files are taken out, we find between them it is not have contact, although the time of taking a picture is between two video files, if but do not do any technical processing, if and other video file mixes, we be cannot be by 20140210113241.jpg file the accurate associated 20140210113240.mp4 of shooting time and two video files of 20140210115015.mp4, because the mark shooting time of picture and shooting time and the end time of these two files all do not occur simultaneously, so read after the beginning shooting time of picture file 20140210113241.jpg, subtract 10 seconds becoming with beginning shooting time is 2014 02 month 11: 32: 31 on the 10th, this is a comparison time after calibration, with this comparison time find start shooting time be less than 2014 02 month 11: 32: 31 on the 10th, finish shooting time and be greater than 2014 02 month 11: 32: 31 on the 10th, just in time can find 20140210113240.mp4, in like manner read after the end shooting time of picture file 20140210113241.jpg, with end shooting time add 10 seconds comparison time be 2014 02 month 11: 32: 51 on the 10th, finding end shooting time to be greater than 2014 02 month 11: 32: 51 on the 10th and to start shooting time by this comparison time is again to be less than the file of 2014 02 month 11: 32: 51 on the 10th, just in time can find 20140210115015.mp4 file, realize the rapid association of data structure records by so simple SQL statement.
Because the video file time that the picture time of taking pictures and accident process are recorded does not intersect, but due to the beginning shooting time of picture file, finish shooting time respectively with mistiming very little (being no more than in theory 3 seconds) of the beginning shooting time of the end shooting time of video one, video two, the shooting time minimizing that identifies photo by use is found with the method for the video file of picture shooting time correlation and be can be described as the time method of making up the difference for 10 seconds.The meaning of this method is if a database records a large amount of video files, can find fast and the video file of photograph taking time correlation by software, and the photo of this shooting can be described as mark picture.
This method is carried out can reading from law-enforcing recorder at file and being written to disk array, also can be put into database background application task and go to carry out.
Embodiment bis-
As shown in Figure 3, the important media file of a kind of law-enforcing recorder is identified determination methods automatically, and it also describes as an example of video file example, and it comprises the following steps:
Step S21, read video file in the storer of law-enforcing recorder and trigger the text that the button of taking pictures of law-enforcing recorder produces because of law enfrocement official, after reading, the beginning shooting time of video file and end shooting time must first be stored in a database.Described text records to be taken the end time before it and takes the start time at the filename of two video files thereafter.For example, law enfrocement official is in the time of capture video, press the button of taking pictures, this video completes to be taken and has a filename, law-enforcing recorder generates a text, law-enforcing recorder is written to the filename of one section of video before described text in described text at once, then, law-enforcing recorder continues capture video, when law enfrocement official presses after end key, the video that continues to take completes to be taken and has a filename, and law-enforcing recorder is written to the filename that continues the video of taking in described text.
Step S22, read the filename of two video files in described text.
Step S23, will carry out associated and identify default importance degree grade with two video files of the filename coupling of described two video files.
Wherein, described video file and text all have the unique identification information of described law-enforcing recorder, carry out so that the title of text and video file is compared the file all producing for same law-enforcing recorder.
As shown in Figure 4, the present embodiment also proposes the important media file of law-enforcing recorder corresponding to a kind of method and automatically identifies judgment means, and it comprises with lower module:
The first read module, for read law-enforcing recorder storer video file and because law enfrocement official triggers the text that the button of taking pictures of law-enforcing recorder produces, described text records to be taken the end time before it and takes the filename of start time at two video files thereafter;
The second read module, for reading the filename of two video files of described text;
Identification module, for carrying out associated and identify default importance degree grade with two video files of the filename coupling of described two video files.
In addition, the video file of embodiment mono-and embodiment bis-can also replace with audio file.
The law enforcement record of the administrative units such as current traffic police, municipal administration, industry and commerce, procuratorate is all to concentrate to upload in the disk array of data center, because most of video file is all law enfrocement official's video common on duty, if not having an accident or particular case, these video files are not have value for preservation, do not need in other words to preserve and just can remove too for a long time, store other video files to vacate disk space.
But some accident video files or controversial enforcing law video must retain, this requires law enfrocement official to upload after video file at every turn, login audio/video player system one by one video is opened to play after watching and is determined whether meaning with a grain of salt again, and identify, this method takes time and effort, very inconvenient management.
The present invention solves automatic identification and the screening problem of the captured multitude of video of law-enforcing recorder, by the present invention, can realize by using software to realize and automatically identify and identify useful video file, and can be in conjunction with the mode of formulating a policy library, by predefined policy library, the important level of dividing more in detail video media, identifies retention time of this video file etc.
For a person skilled in the art, can be according to technical scheme described above and design, make other various corresponding changes and distortion, and these all changes and distortion all should belong to the protection domain of the claims in the present invention within.
Claims (9)
1. the important media file of law-enforcing recorder is identified determination methods automatically, it is characterized in that, comprises the following steps:
Step 1, read media file in the storer of law-enforcing recorder and trigger the picture file that the button of taking pictures of law-enforcing recorder produces because of law enfrocement official;
Step 2, the beginning shooting time of described picture file is deducted to the default alignment time obtain the first comparison time, and be less than the first comparison time and finish the media file that shooting time is greater than the first comparison time and be designated as the first important media file starting shooting time; The beginning shooting time of described picture file is added to the default alignment time obtains the second comparison time, and be less than the second comparison time and finish the media file that shooting time is greater than the second comparison time and be designated as the second important media file starting shooting time;
Step 3, the first important media file and the second important media file are carried out associated and identify default importance degree grade.
2. the important media file of law-enforcing recorder as claimed in claim 1 is identified determination methods automatically, it is characterized in that, described media file and picture file all have the unique identification information of described law-enforcing recorder, carry out so that the time of picture file and media file is compared the file all producing for same law-enforcing recorder.
3. the important media file of law-enforcing recorder as claimed in claim 1 is identified determination methods automatically, it is characterized in that, the beginning shooting time of media file and end shooting time, and the beginning shooting time of picture file is all stored in a database with end shooting time.
4. the important media file of law-enforcing recorder is identified judgment means automatically, it is characterized in that, comprises with lower module:
Read module, for read law-enforcing recorder storer media file and trigger the picture file that the button of taking pictures of law-enforcing recorder produces because of law enfrocement official;
Comparing module, obtain the first comparison time for the beginning shooting time of described picture file is deducted to the default alignment time, and be less than the first comparison time and finish the media file that shooting time is greater than the first comparison time and be designated as the first important media file starting shooting time; The beginning shooting time of described picture file is added to the default alignment time obtains the second comparison time, and be less than the second comparison time and finish the media file that shooting time is greater than the second comparison time and be designated as the second important media file starting shooting time;
Identification module, for carrying out associated and identifying default importance degree grade to the first important media file and the second important media file.
5. the important media file of law-enforcing recorder is identified determination methods automatically, it is characterized in that, comprises the following steps:
Step 1, read media file in the storer of law-enforcing recorder and because law enfrocement official triggers the text that the button of taking pictures of law-enforcing recorder produces, described text records to be taken the end time before it and takes the filename of start time at two media files thereafter;
Step 2, read the filename of two media files in described text;
Step 3, will carry out associated and identify default importance degree grade with two media files of the filename coupling of described two media files.
6. the important media file of law-enforcing recorder as claimed in claim 5 is identified determination methods automatically, it is characterized in that, described media file and text all have the unique identification information of described law-enforcing recorder, carry out so that the title of text and media file is compared the file all producing for same law-enforcing recorder.
7. the important media file of law-enforcing recorder as claimed in claim 5 is identified determination methods automatically, it is characterized in that, the beginning shooting time of media file and end shooting time are stored in a database.
8. the important media file of law-enforcing recorder is identified judgment means automatically, it is characterized in that, comprises with lower module:
The first read module, for read law-enforcing recorder storer media file and because law enfrocement official triggers the text that the button of taking pictures of law-enforcing recorder produces, described text records to be taken the end time before it and takes the filename of start time at two media files thereafter;
The second read module, for reading the filename of two media files of described text;
Identification module, for carrying out associated and identify default importance degree grade with two media files of the filename coupling of described two media files.
9. the important media file of law-enforcing recorder as described in claim 1-3,5-7 any one is identified determination methods automatically, it is characterized in that, described media file is video file or audio file.
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