CN113094551A - Vehicle event data recorder video retrieval method and device, server and retrieval system - Google Patents
Vehicle event data recorder video retrieval method and device, server and retrieval system Download PDFInfo
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- 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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- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0841—Registering performance data
- G07C5/085—Registering performance data using electronic data carriers
- G07C5/0866—Registering performance data using electronic data carriers the electronic data carrier being a digital video recorder in combination with video camera
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Abstract
The invention relates to the technical field of video retrieval, in particular to a method, a device, a server and a retrieval system for retrieving videos of a vehicle event data recorder. The method comprises the following steps: generating a video calendar snapshot table, a video schedule table and a query video snapshot table; inquiring a time ascending list from the short video corresponding to the video calendar snapshot list; screening a video travel time axis list meeting the requirements corresponding to the video travel table; correspondingly inquiring a video snapshot table, and acquiring video details containing a target time period; and returning the event video or the event picture in the video detail. The invention reduces the query range through various pre-generated snapshot tables, and can quickly index the records to be queried. In addition, because the video source file is compressed by time-reducing and frame-drawing, the video duration can be positioned after the specific time is found by searching the corresponding metadata at the specific positioning moment, so that the required video data can be conveniently intercepted, and the video can be conveniently and quickly inquired by an application terminal.
Description
Technical Field
The invention relates to the technical field of video retrieval, in particular to a method, a device, a server and a retrieval system for retrieving videos of a vehicle event data recorder.
Background
At present, video data of a traditional recorder is generally stored in a storage card of an equipment end, most of video files are not uploaded to a cloud end, when the video data need to be checked in the later period, an application end sends query parameters to a remote vehicle-mounted machine system, and then the query parameters are retrieved by the vehicle-mounted machine system.
For part of schemes, video source files are compressed and uploaded, and although access to the cloud is convenient in many ways, the large capacity of the video files brings great storage cost to enterprises, and therefore all videos cannot be uploaded to the cloud. Therefore, the conventional solution has the following disadvantages:
firstly, statistical analysis and query are inconvenient, query conditions need to be sent to equipment, an equipment system queries records meeting the conditions according to the conditions, then directory data are uploaded through control equipment, and finally, when all video data are uploaded to a cloud end, unified analysis can be carried out;
secondly, the bottleneck of storage capacity is achieved by enabling the video with the compressed code rate to be in cloud state all the time when the equipment amount and the data amount reach a certain scale, so that the searching and warehousing are slower and slower, and finally the business development cannot be supported;
thirdly, with the development of the mobile internet technology, the functions of the intelligent car machine are more and more, besides the conventional video files, more query requirements are required at the user side, and at the moment, the conventional query mode is difficult to support the query speed requirements of more conditions.
And fourthly, even if data such as videos are stored in the cloud, the data cannot be quickly retrieved because reasonable logic storage processing classification is not carried out, and at the moment, if a video file table is forcibly inquired in real time, firstly, the record number is huge, and secondly, due to various conditions, the inquiry can be long, and the browsing physical examination of a client is seriously influenced.
The above retrieval modes all have obvious disadvantages, and the implementation of the methods has some limiting conditions, so that the purpose of real-time retrieval is difficult to achieve when massive data is subjected to big data retrieval analysis.
Disclosure of Invention
In view of the above technical problems, embodiments of the present invention provide a method, an apparatus, a server and a retrieval system for retrieving a video of a car event data recorder, so as to solve one or more problems that a conventional car event data recorder is inconvenient to query and difficult to achieve a retrieval goal.
A first aspect of an embodiment of the present invention provides a method for retrieving a video of a car recorder, where key frames in the video of the car recorder are merged into a short video with a shortened segment, where the method includes: generating a video calendar snapshot table, a video schedule table and a query video snapshot table according to the short video; inquiring a time-up list meeting the requirement from the short video according to a video calendar snapshot list corresponding to the inquiry time; according to the effective date, corresponding to a video schedule, and screening a video schedule time axis list meeting the requirements from the calendar video data; correspondingly inquiring a video snapshot table according to the video period parameters, and acquiring video details containing target periods from the video travel time axis list; and returning the event video or the event picture in the video detail.
Optionally, the returning of the event video or the event picture in the video detail specifically includes: searching metadata of a corresponding event according to the video journey time shaft list; obtaining an event video or an event picture according to the metadata of the corresponding event; and returning the event video or the event picture.
Optionally, after querying the video data meeting the calendar from the video calendar snapshot table according to the query time, the method further includes: and returning the inquired calendar video data to the application end so that the application end displays the calendar video data through the UI.
Optionally, after querying a video schedule table according to the effective date to screen a video schedule timeline list meeting requirements from the calendar video data, the method further includes: and returning the screened video travel time axis list to the application end so that the application end displays the video travel time axis list in a form with a playing window and a visual time axis.
Optionally, the event video is obtained according to metadata of the corresponding event, specifically: finding out video files and structured data in corresponding time periods according to the metadata; downloading the video files and the structured data in batches; positioning an accurate video time frame according to the structured data; calculating the video duration of the corresponding moment according to the video moment frame; respectively intercepting a plurality of video data at intervals before and after the moment frame according to the video duration; and carrying out video combination on the video data of the plurality of intervals to obtain an event video.
Optionally, the event picture is obtained according to metadata of the corresponding event, specifically: obtaining metadata details according to the metadata link; traversing the metadata detail, and finding out the video frame closest to the query moment; and extracting the video frame and storing the video frame into a picture format to obtain an event picture.
A second aspect of the embodiments of the present invention provides a device for retrieving a video of a car recorder, including:
the generating module is used for generating a video calendar snapshot table, a video schedule table and a query video snapshot table according to the short video; the first query module is used for querying a time-up list meeting the requirement from the short video according to a video calendar snapshot list corresponding to query time; the screening module is used for screening a video travel time axis list meeting the requirements from the calendar video data according to the effective date and the corresponding video travel schedule; the acquisition module is used for correspondingly inquiring the video snapshot table according to the video time period parameters and acquiring the video details containing the target time period from the video travel time axis list; and the return module is used for returning the event video or the event picture in the video detail.
Optionally, the return module comprises: the searching unit is used for searching metadata of a corresponding event according to the video journey time axis list; the obtaining unit is used for obtaining an event video or an event picture according to the metadata of the corresponding event; and the return unit is used for returning the event video or the event picture.
A third aspect of the embodiments of the present invention provides a service end for a video of a car event data recorder, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the retrieval method as described above when executing the computer program.
A fourth aspect of the embodiments of the present invention provides a retrieval system for a video of a car recorder, including:
an application end; a vehicle-mounted end; the server side of the automobile data recorder video is respectively interconnected with the application side and the vehicle-mounted side; the server side executes the retrieval method based on the application side and the vehicle-mounted side.
According to the method for retrieving the automobile data recorder video, provided by the embodiment of the invention, the query range is narrowed through various pre-generated snapshot tables, and the records needing to be queried can be quickly indexed. In addition, because the video source file is compressed by time-reducing and frame-drawing, the video duration can be positioned after the specific time is found by searching the corresponding metadata at the specific positioning moment, so that the required video data can be conveniently intercepted, and the video can be conveniently and quickly inquired by an application terminal.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a block diagram of a vehicle event data recorder video retrieval system according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a method for retrieving a video of a car recorder according to an embodiment of the present invention;
fig. 3 is a block diagram of a video retrieval device of a car recorder according to an embodiment of the present invention.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used in this specification, the terms "upper," "lower," "inner," "outer," "bottom," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The video data retrieval is time-consuming and resource-consuming, particularly network flow and hard disk storage space, and is very difficult to retrieve and obtain quickly due to large data volume. Referring to fig. 1, the search system includes: the system comprises a service end, an application end and a vehicle-mounted end of a vehicle event data recorder video. In the embodiment of the invention, the vehicle-mounted end of the automobile data recorder is respectively interconnected with the server and the application end, the automobile data recorder is installed at the vehicle-mounted end and is used for recording videos in the driving process, and the automobile data recorder can extract key frames from a section of recorded long videos and combine the key frames into a section of shortened short videos according to the configuration of the server.
Here, it should be noted that, a segment of recorded long video with extracted key frames is merged into a segment of compressed short video, and instead of compressing the original video at the bit rate, a segment of video with little change in picture for a long time is compressed into a short key drawing video, so that the video data can effectively reduce the space consumption of non-key videos and the time for users to watch.
Meanwhile, the automobile data recorder merges key frames in the video into a new time-lapse video file according to video merging conditions such as speed and scene change, stores metadata into a queue, finally transmits video directory records and the metadata to the server side together, and the server side performs data analysis according to uploaded records and uploads the data to the cloud side for reasonable storage. Specifically, the server generates various data snapshot records of the internet of vehicles related services according to the short video, and the following embodiments of the present invention specifically describe the various data snapshot records including: video calendar snapshot tables, video schedule tables, query video snapshot tables, and the like.
Finally, when a user requests video playback from the application end, the user can respectively inquire the data snapshot records according to the retrieval conditions, continuously traverse from the parent snapshot to the child snapshot to obtain the detail records meeting the conditions, finally intercept effective video data according to the detail records meeting the conditions, then merge the videos, upload the videos to a cloud disk of the server end, and generate a video link accessible to the public network; the downloading and uploading actions are in the same cloud environment, so that the speed is very high, and the waiting time of a user is greatly reduced.
According to the automobile data recorder video retrieval system provided by the embodiment of the invention, the query range is continuously narrowed through various pre-generated snapshot lists (calendar, schedule, summary, detail, label and the like), and the records needing to be queried can be quickly indexed. In addition, because the video source file is compressed by time-lapse and frame-extraction, the video duration can be positioned after the specific time is found by searching the corresponding metadata at the specific time, so that the required video data can be conveniently intercepted. Specifically, whether a video exists or not can be inquired through calendar positioning, a video calendar interface is finally displayed at an application end, a calendar is clicked to obtain a video travel time interval, a digital timestamp of the video detail is positioned through the travel time interval, the video detail is inquired quickly, a video event is inquired according to the detail time interval, and finally an event result is displayed for a client to browse and watch.
The following describes a method executed by a video server of a car recorder in the embodiment of the present invention. Referring to fig. 2, fig. 2 is a retrieval method of a video of a car recorder according to an embodiment of the present invention, where key frames in the video of the car recorder are merged into a short video with a shortened segment at a vehicle-mounted end, and at the same time, the car recorder merges the key frames in the video into a new video file with a shortened segment according to video merging conditions such as speed and scene change, and stores metadata into a queue, and finally transmits a video directory record and the metadata to a server, as shown in fig. 2, the method includes the following steps:
and step 21, generating a video calendar snapshot table and a video schedule table according to the short video and inquiring the video snapshot table.
In the embodiment of the invention, the server receives the video record data, preprocesses the video record, and finally generates the following data: the method comprises the following steps of video calendar recording (corresponding to a video calendar snapshot table), video travel recording (corresponding to a video travel table), video tag recording (corresponding to a video snapshot table), video metadata recording and video cloud storage recording, so that query conditions can be matched quickly during later retrieval. Correspondingly, the interface retrieval process corresponding to the subsequent application end is divided into: time period video recording retrieval (calendar, itinerary, details, events), time event photo retrieval, time event video retrieval, and the like.
And step 22, inquiring a time ascending list meeting the requirement from the short video according to the video calendar snapshot list corresponding to the inquiry time.
Video calendar recording in the above step 21: a matching result time-up list may be queried from the video calendar snapshot table based on the start time and end time of the query.
The server returns the video calendar record to the application end, the application end displays the video calendar record to the user through an interface of a calendar UI, the user can select which day of video needs to be watched through various label icons and state marks on the calendar, and after clicking a certain day needing to be watched, the application end sends the watching date to the server end.
And 23, screening a video travel time axis list meeting the requirements from the calendar video data according to the effective date and the corresponding video travel table.
Video trip recording in step 21 above: the video travel schedule can be inquired according to the effective date, and a video travel time axis list with specific time, which comprises the starting time and the ending time of each section of travel, a video channel, a video thumbnail, video file information, a video state and the like, is further obtained.
The server returns the video travel to the application end, the application end displays the video travel by using a visual time axis with a playing window, various label states are attached to the time axis, a user can directly slide the label time axis or click the label to select the video, a thumbnail of the travel is displayed firstly during selection, and then a request of the video is sent to the server end.
And 24, correspondingly inquiring a video snapshot table according to the video period parameters, and acquiring video details containing the target period from the video travel time axis list.
Video tag recording in step 21 above: video details may be looked up from a video snapshot table based on a video period parameter accurate to milliseconds.
Further, if the query result exists, the video event table is continuously queried according to the time interval of the detail record, the video event table and the time interval are combined into an independent data structure, and the data structure is returned to the application end. And after the application terminal acquires the video link and the video event list, starting to acquire the video source, starting to play the video and simultaneously drawing an event icon on the application terminal map.
And 25, returning the event video or the event picture in the video detail.
The step is to search the metadata of the corresponding event according to the video journey time shaft list; then, according to the metadata of the corresponding event, an event video or an event picture is obtained; and returns an event video or an event picture.
If the event video is returned, specifically: firstly, inquiring a video calendar snapshot table, and detecting whether a video calendar exists at the moment; if yes, the video schedule is continuously inquired, and video snapshot tables at a plurality of intervals before and after the corresponding time are inquired according to the time of the event.
If the video of the corresponding time interval can be found, downloading the video files and the structured data in batches, positioning an accurate video time frame according to the structured data, calculating the video time length of the corresponding time of the video according to the frame, respectively intercepting the video data of a plurality of intervals (intervals which can be dynamically configured) before and after the frame according to the time length, merging the videos, and finally returning the merged video. Specifically, the merged video can be uploaded to an intranet cloud space, and a public network download link is generated, i.e. the video can be downloaded; it should be noted that the downloading and uploading operations can be performed in the same cloud environment, so that the speed is very high, and the waiting time of the user is greatly reduced.
If the event picture is returned, the method specifically comprises the following steps: and the application end detects whether the video calendar exists at the moment or not according to the inquired event calendar snapshot table, if so, the application end continues to inquire the video travel record, then inquires the video snapshot record according to the travel time period, and finally obtains the video details of the video containing time period.
Because the video source of the recorder is compressed by time-reducing frame extraction, even if the time of a moment is known, the video source is difficult to be positioned in the video detail to prepare a specific video source, metadata needs to be downloaded, namely the metadata detail is obtained according to a metadata link, then the metadata detail is traversed, the video frame closest to the query moment is found out when the metadata has a record of the real time corresponding to the frame, the frame is extracted and stored into a picture format, and finally the picture can be returned.
According to the method for retrieving the automobile data recorder video, the video is stored reasonably by adopting the snapshot tables and the cloud disk, so that the application end can inquire the video more conveniently and quickly. Specifically, the query scope is continuously narrowed through various pre-generated snapshot tables (calendar, schedule, summary, detail, label, etc.), and records needing to be queried can be quickly indexed. In addition, because the video source file is compressed by time-lapse and frame-extraction, the video duration can be positioned after the specific time is found by searching the corresponding metadata at the specific time, so that the required video data can be conveniently intercepted.
The embodiment of the present invention further provides a device for retrieving a video of a car recorder, where the method for retrieving a video of a car recorder is also applicable to the device in the embodiment of the present invention, and referring to fig. 3, a retrieving device 300 in the embodiment of the present invention includes: a generation module 31, a first query module 32, a screening module 33, an acquisition module 34 and a return module 35.
The generating module 31 is configured to generate a video calendar snapshot table, a video schedule table, and a query video snapshot table according to the short video; the first query module 32 is configured to query a time-up list meeting requirements from the short video according to the video calendar snapshot list corresponding to the query time; the screening module 33 is configured to screen a video schedule timeline list meeting requirements from the calendar video data according to the effective date and the corresponding video schedule; the obtaining module 34 is configured to correspondingly query the video snapshot table according to the video period parameter, and obtain the video details including the target period from the video trip timeline list; the returning module 35 is used for returning the event video or the event picture in the video detail.
The automobile data recorder video retrieval device provided by the embodiment of the invention continuously reduces the query range through various pre-generated snapshot tables, and can quickly index the record to be queried. In addition, because the video source file is compressed by time-lapse and frame-extraction, the video duration can be positioned after the specific time is found by searching the corresponding metadata at the specific time, so that the required video data can be conveniently intercepted.
In some embodiments, the return module 35 includes: the device comprises a searching unit, an obtaining unit and a returning unit. The searching unit is used for searching metadata of a corresponding event according to the video journey time axis list; the obtaining unit is used for obtaining an event video or an event picture according to the metadata of the corresponding event; and the return unit is used for returning the event video or the event picture.
The embodiment of the invention also provides a video server of the automobile data recorder, which comprises: a memory, a processor, and a computer program stored on the memory and executable on the processor. The memory may be at least one memory device located remotely from the aforementioned processor. Wherein the processor may be in connection with the apparatus described in fig. 3, the memory stores an application program therein, and the processor calls the program code stored in the memory for executing the retrieval method in the above-described embodiment.
It will be further appreciated by those of skill in the art that the various steps of the exemplary tachograph video retrieval method described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, and that the various exemplary components and steps have been generally described in terms of functions in the foregoing description for clarity of illustration of interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation.
Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention. The computer software may be stored in a computer readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory or a random access memory.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for retrieving a vehicle event recorder video, wherein key frames in the vehicle event recorder video are combined into a short video with a reduced time period, the method comprising:
generating a video calendar snapshot table, a video schedule table and a query video snapshot table according to the short video;
inquiring a time-up list meeting the requirement from the short video according to a video calendar snapshot list corresponding to the inquiry time;
according to the effective date, corresponding to a video schedule, and screening a video schedule time axis list meeting the requirements from the calendar video data;
correspondingly inquiring a video snapshot table according to the video period parameters, and acquiring video details containing target periods from the video travel time axis list;
and returning the event video or the event picture in the video detail.
2. The retrieval method according to claim 1, wherein the returning of the event video or the event picture in the video detail specifically includes:
searching metadata of a corresponding event according to the video journey time shaft list;
obtaining an event video or an event picture according to the metadata of the corresponding event;
and returning the event video or the event picture.
3. The retrieval method of claim 1, wherein after querying the video calendar snapshot table for calendar-compliant video data based on the query time, the method further comprises:
and returning the inquired calendar video data to the application end so that the application end displays the calendar video data through the UI.
4. The retrieval method of claim 1, wherein after querying a video schedule table based on the expiration date to screen a list of satisfactory video schedule timelines from the calendar video data, the method further comprises:
and returning the screened video travel time axis list to the application end so that the application end displays the video travel time axis list in a form with a playing window and a visual time axis.
5. The retrieval method according to claim 2, wherein the event video is obtained according to metadata of the corresponding event, specifically:
finding out video files and structured data in corresponding time periods according to the metadata;
downloading the video files and the structured data in batches;
positioning an accurate video time frame according to the structured data;
calculating the video duration of the corresponding moment according to the video moment frame;
respectively intercepting a plurality of video data at intervals before and after the moment frame according to the video duration;
and carrying out video combination on the video data of the plurality of intervals to obtain an event video.
6. The retrieval method according to claim 2, wherein the event picture is obtained according to metadata of the corresponding event, specifically:
obtaining metadata details according to the metadata link;
traversing the metadata detail, and finding out the video frame closest to the query moment;
and extracting the video frame and storing the video frame into a picture format to obtain an event picture.
7. A retrieval device of a vehicle event data recorder video is characterized by comprising:
the generating module is used for generating a video calendar snapshot table, a video schedule table and a query video snapshot table according to the short video;
the first query module is used for querying a time-up list meeting the requirement from the short video according to a video calendar snapshot list corresponding to query time;
the screening module is used for screening a video travel time axis list meeting the requirements from the calendar video data according to the effective date and the corresponding video travel schedule;
the acquisition module is used for correspondingly inquiring the video snapshot table according to the video time period parameters and acquiring the video details containing the target time period from the video travel time axis list;
and the return module is used for returning the event video or the event picture in the video detail.
8. The retrieval device of claim 7, wherein the return module comprises:
the searching unit is used for searching metadata of a corresponding event according to the video journey time axis list;
the obtaining unit is used for obtaining an event video or an event picture according to the metadata of the corresponding event;
and the return unit is used for returning the event video or the event picture.
9. The utility model provides a video server of vehicle event data recorder, its characterized in that includes: a memory, a processor, and a computer program stored on the memory and executable on the processor,
the processor, when executing the computer program, implements the retrieval method of any of claims 1 to 6.
10. A vehicle event recorder video retrieval system, comprising:
an application end;
a vehicle-mounted end;
the server side of the automobile data recorder video is respectively interconnected with the application side and the vehicle-mounted side;
the server side executes the retrieval method according to any one of claims 1 to 6 on the basis of the application side and the vehicle side.
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| CN202110195796.0A CN113094551B (en) | 2021-02-19 | 2021-02-19 | Method, device, server and system for retrieving videos of automobile data recorder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114339299A (en) * | 2021-12-27 | 2022-04-12 | 司法鉴定科学研究院 | Video evidence obtaining method for automobile driving recorder |
| CN114550489A (en) * | 2022-01-28 | 2022-05-27 | 深圳市海雀科技有限公司 | Vehicle searching information processing method, system and related device |
| CN115348477A (en) * | 2022-04-28 | 2022-11-15 | 武汉众智数字技术有限公司 | Method and system for quickly retrieving videos based on time axis |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101601286A (en) * | 2007-01-31 | 2009-12-09 | 惠普开发有限公司 | The parallel of video segment of realizing the fast video document understanding presents |
| CN103605778A (en) * | 2013-11-28 | 2014-02-26 | 中安消技术有限公司 | Method, device and system for locating video file |
| CN103748609A (en) * | 2011-08-23 | 2014-04-23 | 微软公司 | Method for transferring media playback from a different device |
| CN104636330A (en) * | 2013-11-06 | 2015-05-20 | 北京航天长峰科技工业集团有限公司 | Related video rapid searching method based on structural data |
| US20150154452A1 (en) * | 2010-08-26 | 2015-06-04 | Blast Motion Inc. | Video and motion event integration system |
| CA2909018A1 (en) * | 2014-10-15 | 2016-04-15 | Comcast Cable Communications, Llc | Identifying content of interest |
| CN105917359A (en) * | 2013-10-21 | 2016-08-31 | 微软技术许可有限责任公司 | Mobile video search |
| CN109643368A (en) * | 2016-06-24 | 2019-04-16 | 帝国科技及医学学院 | Detect the object in video data |
-
2021
- 2021-02-19 CN CN202110195796.0A patent/CN113094551B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101601286A (en) * | 2007-01-31 | 2009-12-09 | 惠普开发有限公司 | The parallel of video segment of realizing the fast video document understanding presents |
| US20150154452A1 (en) * | 2010-08-26 | 2015-06-04 | Blast Motion Inc. | Video and motion event integration system |
| CN103748609A (en) * | 2011-08-23 | 2014-04-23 | 微软公司 | Method for transferring media playback from a different device |
| CN105917359A (en) * | 2013-10-21 | 2016-08-31 | 微软技术许可有限责任公司 | Mobile video search |
| CN104636330A (en) * | 2013-11-06 | 2015-05-20 | 北京航天长峰科技工业集团有限公司 | Related video rapid searching method based on structural data |
| CN103605778A (en) * | 2013-11-28 | 2014-02-26 | 中安消技术有限公司 | Method, device and system for locating video file |
| CA2909018A1 (en) * | 2014-10-15 | 2016-04-15 | Comcast Cable Communications, Llc | Identifying content of interest |
| CN109643368A (en) * | 2016-06-24 | 2019-04-16 | 帝国科技及医学学院 | Detect the object in video data |
Non-Patent Citations (4)
| Title |
|---|
| SANGMIN OH等: "a large scale benchmark dataset for event recognition in surveillance video", CVPR 2011, pages 1 - 8 * |
| 廖佳佳等: "海量视频智能搜索领域专利布局分析", 中国科技信息, no. 6, pages 18 - 19 * |
| 张仲炜: "视觉处理在MPEG-7中的初步应用", 计算机时代, no. 10, pages 26 - 28 * |
| 杨英仓: "案件视频画面目标的测量技术研究", 贵州警官职业学院学报, vol. 31, no. 1, pages 84 - 90 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114339299A (en) * | 2021-12-27 | 2022-04-12 | 司法鉴定科学研究院 | Video evidence obtaining method for automobile driving recorder |
| CN114550489A (en) * | 2022-01-28 | 2022-05-27 | 深圳市海雀科技有限公司 | Vehicle searching information processing method, system and related device |
| CN115348477A (en) * | 2022-04-28 | 2022-11-15 | 武汉众智数字技术有限公司 | Method and system for quickly retrieving videos based on time axis |
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