CN105302856A - Method for quickly extracting monitoring video data - Google Patents
Method for quickly extracting monitoring video data Download PDFInfo
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- CN105302856A CN105302856A CN201510600770.4A CN201510600770A CN105302856A CN 105302856 A CN105302856 A CN 105302856A CN 201510600770 A CN201510600770 A CN 201510600770A CN 105302856 A CN105302856 A CN 105302856A
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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
- G06F16/78—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
- G06F16/7867—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using information manually generated, e.g. tags, keywords, comments, title and artist information, manually generated time, location and usage information, user ratings
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Abstract
The invention discloses a method for quickly extracting monitoring video data and belongs to the field of data recovery and evidence obtaining. The method comprises the following steps of (101) acquiring a disk storing video data from a monitor, (102) analyzing time parameters of video data acquired in the disc (101), searching required video data in the full disc according to the parameters acquired in the step (102), and extracting data according to relative formats of the video data acquired in the step (103). The beneficial effects are that time parameters in the video data are looked for via specific signs and a data area comparison method; area retrieval is conducted via the time parameters, so the area for retrieval can be quickly determined and 4/5 of time can be reduced compared with the prior art; according to the parameters, videos of related parameters can be quickly determined to be stored in the disc or not; and great effects can be achieved when the method is applied to evidence obtaining of public security organs.
Description
Technical field
The invention belongs to date restoring and evidence obtaining field, be specifically related to a kind of method of rapid extraction monitor video data.
Background technology
In the information age, monitor video data play important role, it is mainly used in safety-security area, national, civilian, enterprises and institutions' tight association all with it, but the disaster tolerance of monitor data does not also attract great attention, so monitor data occurs that various logic problem causes the phenomenon of video-losing also just to be comed one after another.
In addition, monitor video data layout Dou Shige manufacturer is each self-defining, and this just adds a difficult problem to the recovery of monitor video data, at present, in monitor video date restoring, usually the parameters of usage monitoring video data is to data location, parsing form, recovery data, but, owing to being difficult to find relevant parameter, therefore just there is obstacle when operation parameter is located, even if some method can find parameter now, but need to extract all parameters, cause inefficiency.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of method of rapid extraction monitor video data, prior art can be separated and recover the low problem of monitor video data efficiency.
For overcoming the above problems, the technical solution used in the present invention is as follows: a kind of method of rapid extraction monitor video data, comprises the following steps:
S101 obtains the disk of stored video data from monitoring equipment;
S102 resolves the time parameter of the video data in the disk of S101 acquisition;
S103 retrieves the video data needed according to the parameter obtained in S102 in totally;
The corresponding format of the video data that S104 obtains according to S103 carries out data extraction.
As preferably, S102 comprises the following steps:
S1021 resolves the time parameter in video data;
S1022 is verified the time parameter parsed in S1021.
As preferably, S1021 comprises the following steps:
The data structure of S10211 checking monitoring machine, finds position, data field;
S10212 finds mark in sector such as grade of data field, then finds out at least Liang Ge set of metadata of similar data district by mark, is finally contrasted at least Liang Ge set of metadata of similar data district found out, the data always changed and regular increase or reduce then for time parameter; Wherein, described mark refers to specific constant character, and the video data of different-format can be different; Described set of metadata of similar data district refers to the data field containing same mark.
As preferably, video data is packed out and plays, verify whether its time shown is the parsing time, if it is illustrate and resolve correctly, otherwise, return S1021, again resolve.
As preferably, S103 comprises the following steps:
S1031 determines the video time needing to extract, and the standard time format shown is changed into the time format of monitoring equipment internal record in video;
S1032 arranges out the time point of correspondence according to a certain size disk storage region M of interval, then time point as required determines the disk storage region of corresponding retrieval;
1031 time points needed are retrieved in the region that S1033 determines in 1032.
Beneficial effect of the present invention is as follows: the present invention utilizes the time parameter in specific markers and data field Comparison Method searching video data; And carry out area reseach by time parameter, can determine the region needing retrieval fast, the time is reduced by least 4/5 than before; Can determine whether the video of correlation parameter exists in disk fast according to parameter simultaneously; This method of inventing is used for the evidence obtaining of public security organs, extraordinary effect can be obtained.
Accompanying drawing explanation
The main flow chart of Fig. 1 embodiment of the present invention;
Fig. 2 is the process flow diagram of resolving time parameter;
Fig. 3 to Fig. 5 is first sector of three data fields in embodiment;
Fig. 6 is video broadcasting condition;
Fig. 7 carries out according to time parameter the process flow diagram retrieved.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, to develop simultaneously embodiment referring to accompanying drawing, the present invention is described in further details.
In order to describe the inventive method in detail, set forth further by reference to the accompanying drawings: a kind of method of rapid extraction monitor video data, comprises the following steps:
S101 obtains the disk of stored video data from monitoring equipment;
S102 resolves time parameter or the channel parameters of the video data in the disk of S101 acquisition;
S103 retrieves the video data needed according to the parameter obtained in S102 in totally;
The corresponding format of the video data that S104 obtains according to S103 carries out data extraction.
S102 comprises the following steps:
S1021 resolves the time parameter in video data;
S1022 is verified the time parameter parsed in S1021.
S1021 comprises the following steps:
The data structure of S10211 checking monitoring machine, finds position, data field;
S10212 finds mark in sector such as grade of data field, at least Liang Ge set of metadata of similar data district is found out again by mark, contrast finally by least Liang Ge set of metadata of similar data district found out, the data always changed and regular increase or reduce then for time parameter; Wherein, described mark refers to specific constant character, and the video data of different-format can be different; Described set of metadata of similar data district refers to the data field containing same mark.
Embodiment: if Fig. 3 is to first sector that Figure 5 shows that three data fields found, find that several data of OE beginning change (increasing progressively) regularly by contrast, be judged to be time parameter, as follows according to recording time parsing time parameter: 0x0E05080A0C39, wherein 0X0E is 14,0X05 is 5,0X08 is 8,0X0A be 10,0X0C is 12,0X39 is 57, and the time is 14 on May 8,10: 12: 57.The concrete grammar of S1022 is as follows: video data is packed out and plays, and verifies whether its time shown is the parsing time, if it is illustrates and resolves correctly, otherwise, return S1021, again resolve.
S103 comprises the following steps:
S1031 determines the video time needing to extract, and the standard time format shown is changed into the time format of monitoring equipment internal record in video; Due to possible it is desirable that the video of a time period in practice, therefore need the expanded range of time, realize by asterisk wildcard, concrete grammar is as follows: the video such as needing whole day on the 10th May in 2014, after being changed, time format is 0X0E050A3F3F3F (wherein 3F is wildcard mark, can define arbitrarily);
S1032 arranges out the time point of correspondence according to a certain size disk storage region M of interval, then time point as required determines the disk storage region of corresponding retrieval, as shown in Table 1; Wherein, disk size is 1000G, gap size M is 10G, can set arbitrarily, then time point distribution as shown in Table 1.
1031 time points needed are retrieved in the region that S1033 determines in 1032.
Such as: table one
Can find out the video of needs whole day on the 10th May in 2014 according to table 1, the scope only needing retrieval is in this 100G region of 900G-1000G.
Those of ordinary skill in the art will appreciate that, embodiment described here is to help reader understanding's implementation method of the present invention, should be understood to that protection scope of the present invention is not limited to so special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combination of not departing from essence of the present invention according to these technology enlightenment disclosed by the invention, and these distortion and combination are still in protection scope of the present invention.
Claims (5)
1. a method for rapid extraction monitor video data, is characterized in that, comprises the following steps:
S101 obtains the disk of stored video data from monitoring equipment;
S102 resolves the time parameter of the video data in the disk of S101 acquisition;
S103 retrieves the video data needed according to the parameter obtained in S102 in totally;
The corresponding format of the video data that S104 obtains according to S103 carries out data extraction.
2. the method for a kind of rapid extraction monitor video data according to claim 1, it is characterized in that, S102 comprises the following steps:
S1021 resolves the time parameter in video data;
S1022 is verified the time parameter parsed in S1021.
3. the method for a kind of rapid extraction monitor video data according to claim 2, it is characterized in that, S1021 comprises the following steps:
The data structure of S10211 checking monitoring machine, finds position, data field;
S10212 finds mark in sector such as grade of data field, then finds out at least Liang Ge set of metadata of similar data district by mark, is finally contrasted at least Liang Ge set of metadata of similar data district found out, the data always changed and regular increase or reduce then for time parameter; Wherein, described mark refers to specific constant character, and the video data of different-format can be different; Described set of metadata of similar data district refers to the data field containing same mark.
4. the method for a kind of rapid extraction monitor video data according to Claims 2 or 3, it is characterized in that, the concrete grammar of S1022 is as follows: video data is packed out and plays, verify whether its time shown is the parsing time, if it is illustrate and resolve correctly, otherwise, return S1021, again resolve.
5. the method for a kind of rapid extraction monitor video data according to claim 1, it is characterized in that, S103 comprises the following steps:
S1031 determines the video time needing to extract, and the standard time format shown is changed into the time format of monitoring equipment internal record in video;
S1032 arranges out the time point of correspondence according to a certain size disk storage region M of interval, then time point as required determines the disk storage region of corresponding retrieval;
1031 time points needed are retrieved in the region that S1033 determines in 1032.
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| CN201510600770.4A CN105302856B (en) | 2015-09-18 | 2015-09-18 | The method of rapidly extracting monitor video data |
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| CN201510600770.4A CN105302856B (en) | 2015-09-18 | 2015-09-18 | The method of rapidly extracting monitor video data |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962291A (en) * | 2018-07-25 | 2018-12-07 | 武汉恩智电子科技有限公司 | A kind of log identification video playback system based on video monitoring |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325694A (en) * | 2007-06-13 | 2008-12-17 | 中国科学院自动化研究所 | System and method for monitoring intelligent video combining wireless radio frequency recognition technique |
| CN102291256A (en) * | 2011-07-25 | 2011-12-21 | 杭州华三通信技术有限公司 | Monitoring data query method and equipment |
| CN102945679A (en) * | 2012-09-29 | 2013-02-27 | 华为技术有限公司 | Video data processing method and video data read-write equipment |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325694A (en) * | 2007-06-13 | 2008-12-17 | 中国科学院自动化研究所 | System and method for monitoring intelligent video combining wireless radio frequency recognition technique |
| CN102291256A (en) * | 2011-07-25 | 2011-12-21 | 杭州华三通信技术有限公司 | Monitoring data query method and equipment |
| CN102945679A (en) * | 2012-09-29 | 2013-02-27 | 华为技术有限公司 | Video data processing method and video data read-write equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962291A (en) * | 2018-07-25 | 2018-12-07 | 武汉恩智电子科技有限公司 | A kind of log identification video playback system based on video monitoring |
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