CN101808229A - Video stream rapid-playback system based on feature tag - Google Patents
Video stream rapid-playback system based on feature tag Download PDFInfo
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- CN101808229A CN101808229A CN 200910096163 CN200910096163A CN101808229A CN 101808229 A CN101808229 A CN 101808229A CN 200910096163 CN200910096163 CN 200910096163 CN 200910096163 A CN200910096163 A CN 200910096163A CN 101808229 A CN101808229 A CN 101808229A
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Abstract
The invention discloses a video stream rapid-playback system based on a feature tag, and the method comprises the following steps: at the same time of carrying out compression coding on input digital video signals, an encoding module carries out feature analysis on the signals and analyzes whether a specific behavior or scene which is concerned by a user is generated or not; a feature tag is generated according to the analysis result, the feature tag is written into a selectable domain of the video stream after compression coding as an attached field, and the compressed video stream with the feature tag is stored in a storage module; and a decoding module reads the video stream from the storage module and detects the attached field of the feature tag at the same time of carrying out rapid decoding playback on the video stream, and when detecting an effective value in the field, the rapid decoding playback is changed to normal playback. By using the system, the decoding playback speed of the video stream can be automatically regulated on the basis of the content features of the video signals, thus greatly reducing the labor intensity of manual search; and simultaneously, the system has good compatibility and openness.
Description
Technical field
The present invention relates to a kind of video flowing playback system, especially a kind of content characteristic based on vision signal is adjusted the system of decoding playback speed automatically.
Background technology
Video monitoring system is used in all trades and professions more and more widely.Two stages have been experienced in the development of video monitoring system: first stage is that simulation monitoring transforms to digital supervision, and second stage is that compartmentalization is changed to networking.After having realized digitlization and networking, the storage of monitoring video data, transmission, sharing problem solve substantially, and effective utilization of existing monitoring video data has become a problem that urgency is to be solved.So just draw the three phases of video monitoring development, promptly realized the intellectuality of monitoring to greatest extent.
The intellectuality of monitoring is a unfailing topic, and for example, application number is " intelligent interlink warning and monitor system " of " 200710017451 ".But similarly system or method sharing problems that solve or various monitoring resources can't be determined some specific behavior or the special scenes position in the monitoring video data fast.
Need to prove that in view of diversity, complexity, the identification of specific behavior or special scenes is a very complicated problems, also is the hot research problem of present area of pattern recognition.The system itself that the present invention describes does not relate to the concrete recognition methods of specific behavior or special scenes.What the system that the present invention describes solved is that intelligently definite fast some specific behavior or particular location and the playback of special scenes in the monitoring video data are watched to the user.
For example, the digital video monitor system of certain sub-district.This sub-district has totally 10 residential buildings 1 to No. 10, and every residential building has four unit, in the porch of each unit of the front door of sub-district, every residential building monitoring camera is housed all, and promptly this sub-district will be installed 41 monitoring cameras at least.302 Sun Xiansheng of Room resident family 7:50 in the morning of Unit 2 of Building 8 are away from home, and evening, 7:00 After Hours found in the family stolen.Local police station receive a crime report the back to sub-district room security requirement retrieve for examination that morning 7:50 to the relevant Video Document between the evening 7:00 to seek suspicious people.Be the 2 unit that morning 7:50 that need playback Building 8 one by one of the police to the video file between the evening 7:00, when in video file, finding suspicious man-hour, retrieve for examination the Video Document of the community gate of same time period again, to determine the suspect.
In present supervisory control system, the 2 unit that morning 7:50 that need artificial playback Building 8 one by one to the vision signal video file between the evening 7:00 until suspicious people occur.In the replayed section; return visit personnel eyes will stare at screen always; the playback speed manual adjustment, slow if normal playback speed is disliked, if playback (2 times of speed, 4 times of speed, 8 times of speed etc.) fast; speed increases; but leaked key picture easily, rhythm is not easy control, and workload is very big; and because people's visual fatigue or absent minded has been easy to omission.
In sum, in order from the video file data, to find the suspicious people in certain time period, the method of using is with the artificial one by one playback of the All Files in this time period at present, but the quick playback of speed artificial selection during playback, need manually watch the playback picture, when finding the suspicious figure,, promptly finish suspicious figure's search location with the normal speed playback.Such implementation method mainly contains two shortcomings: the one, and workload is very big, as sometimes needing up to a hundred files of playback; The 2nd, cause human error easily, because making, the difference of the fatigue of eye, working sense of responsibility in replayed section, is easy to take place to omit phenomenon.
Summary of the invention
Technical problem to be solved by this invention provides a kind of video stream rapid-playback system based on feature tag.
The present invention addresses the above problem the technical scheme that is adopted: a kind of video stream rapid-playback system based on feature tag is provided, this system comprises image acquisition module, analog-to-digital conversion module, coding module, memory module, decoder module and the display module that connects successively, it is characterized in that:
Described image acquisition module is used for the analog video signal at acquisition monitoring scene and delivers to analog-to-digital conversion module;
Described analog-to-digital conversion module is used for analog video signal is done sample quantization, and the output digital video signal is to coding module;
Described coding module is used for digital video signal is carried out compressed encoding, the video flowing behind the generation compressed encoding; Also to do signature analysis simultaneously to the digital video signal of input, analyze whether specific behavior or special scenes that the user is concerned about have taken place, generate a feature tag according to analysis result, this feature tag is write as an added field on the optional territory of the video flowing behind the compressed encoding, and the video flowing after the compression of band feature tag is stored on the memory module;
Described memory module is used for the video flowing that has the feature tag added field after the stores compression-encoded;
Described decoder module is used for reading the video flowing that has the feature tag added field from memory module, detected characteristics label added field when this video flowing is done the fast decoding playback, when in the feature tag added field, detecting effective value, change the fast decoding playback into normal speed decoding playback; In the playback that begins to decode, decoded vision signal is delivered to display module;
Described display module is used for the vision signal of decoding after the playback shown for the user and watches.
2, the video stream rapid-playback system based on feature tag according to claim 1, it is characterized in that: described decoder module is done the fast decoding playback to video flowing, comprises 2 times of speed decoding playback commonly used in the video monitoring, 4 times of speed decoding playback, 8 times of speed decoding playback, 16 times of speed decoding playback.
3, the video stream rapid-playback system based on feature tag according to claim 1, it is characterized in that: described image acquisition module, analog-to-digital conversion module, coding module, memory module, decoder module and display module, can be integrated in the hardware cell, also can be integrated in a plurality of hardware cells; Can be installed in the same place of video monitoring system, also can be installed in a plurality of different places.
4, the video stream rapid-playback system based on feature tag according to claim 1, it is characterized in that: described coding module carries out compressed encoding to digital video signal, and the compressed encoding standard comprises mpeg 4 standard, H.264 standard, AVS standard; Described decoder module uses the standard consistent with coding module when decoding playback.
The present invention compared with prior art; have following beneficial effect: the first, use designed system of the present invention, can when being carried out quick playback, specified video stream detect feature tag field wherein automatically; after detecting effective value, change normal playback into and be beneficial to the user and watch.I.e. when feature is invalid (the unconcerned picture of user), playback speed fast (2 times of speed, 4 times of speed, 8 times of speed, 16 times of speed decoding playback etc.); When feature is effective (picture that the user is concerned about), playback speed is normal.Compare with the decoder module of common video supervisory control system, do not need the speed of manual adjustment decoding playback, thereby shortened the time of manual retrieval's specific behavior or special scenes greatly, reduce the labour intensity of manual search; Reduce because the human error of bringing such as not enough of the fatigue of eye, working sense of responsibility.The second, the present invention does not influence the compatible and open of system.Because the feature tag among the present invention is to be used as an added field to write on the optional territory of the video flowing behind the compressed encoding, if the Video Document that native system is stored need be shared with other system, as long as the decoder module of other system is followed the compressed encoding standard consistent with native system (as all being standard H.264), just can skip this optional territory, the normal decoder playback.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of the embodiment of the invention 1.
Fig. 3 is the structural representation of the embodiment of the invention 2.
Embodiment
Embodiment 1
Present embodiment is the digital video monitor system that the present invention is used for certain sub-district.This sub-district has totally 10 residential buildings 1 to No. 10, and every residential building has four unit.Requirement all is equipped with monitoring camera in the porch of each unit of the front door of sub-district, every residential building.
Structural representation of the present invention as shown in Figure 2.Image acquisition module 1 is used the simulation camera, and coding module 3 uses DSP and CPU module, and memory module 4 is used hard disc module; Analog-to-digital conversion module 2, coding module 3, memory module 4 all are integrated in the video coder; Number difference according to the simulation camera that inserts is divided into 1 road and 4 tunnel two kinds of video coders, is four road video coders shown in Fig. 2; Installed software is finished on common computer of decoder module 5 usefulness; Display of display module 6 usefulness.
Every residential building has four unit, and a simulation camera 1 is respectively installed on each doorway, unit, and one four road video coder is installed in every building; A simulation camera 1 is adorned on the doorway, sub-district, and one one road video coder is installed.Computer 5 and display 6 all are installed in the sub-district room security.
Simulation camera 1 is used for the analog video signal at acquisition monitoring scene and delivers to analog-to-digital conversion module 2;
Analog-to-digital conversion module 2 is used for analog video signal is done sample quantization, and the output digital video signal is to DSP and CPU module 3;
DSP and CPU module 3, be used for digital video signal is carried out compressed encoding according to mpeg 4 standard, the video flowing of the mpeg 4 standard behind the generation compressed encoding, the header of this video flowing carries an optional territory as added field, and the value in optional territory is changed to " 0 " earlier; Also to do human body discrepancy feature detection simultaneously to the digital video signal of input, the guarded region if the personnel that detect quarter at a time come in and go out, generate the feature tag of a value constantly at this for " 1 ", the value in above-mentioned optional territory is substituted by the value of this feature tag, and the video flowing of the mpeg 4 standard after the compression of band feature tag is stored on the hard disc module 4;
Hard disc module 4 is used for the video flowing of the mpeg 4 standard that has the feature tag added field after the stores compression-encoded;
Display 6 is used for the vision signal of decoding after the playback shown for the user and watches.
Have one day, 302 Sun Xiansheng of Room resident family 7:50 in the morning of Unit 2 of Building 8 are away from home, and evening, 7:00 After Hours found in the family stolen.Local police station receive a crime report the back to sub-district room security requirement retrieve for examination that morning 7:50 to the relevant Video Document between the evening 7:00 to seek suspicious people.Be the 2 unit that morning 7:50 that need playback Building 8 one by one of the police to the video file between the evening 7:00, when in video file, finding suspicious man-hour, retrieve for examination the Video Document of the community gate of same time period again, to determine the suspect.
In general supervisory control system; the 2 unit that morning 7:50 that need artificial playback Building 8 one by one are to the vision signal video file between the evening 7:00; the playback speed manual adjustment, slow if normal playback speed is disliked, if playback (2 times of speed, 4 times of speed, 8 times of speed etc.) fast; speed increases; but leaked key picture easily, rhythm is not easy control, and workload is very big; and because people's visual fatigue has error easily.
Use system of the present invention, at the vision signal file of preserving the MPEG4 form of that morning 7:50 behind the compressed encoding of band feature tag added field between the evening 7:00 on the hard disc module 4 of the video coder that Building 8 is installed.Move the client decoding software on the computer 5 that is installed in the sub-district room security, incoming video signal to the pairing video coder in Building 8 Unit 2, the client decoding software reads the file of that morning 7:50 between the evening 7:00 one by one by network, do in the process of fast decoding playback detected characteristics label added field simultaneously, when in the feature tag added field, detecting " 1 " (i.e. someone come in and go out doorway, unit), change the fast decoding playback into the normal decoder playback; Use the same method the vision signal of being stored that also can the pairing video coder in doorway, playback sub-district.At this moment in conjunction with artificial knowledge's experience, judge whether it is a suspect.Can shorten the time of manual retrieval's playback so greatly, reduce labour intensity, reduce the error that people's kopiopia is brought.
Present embodiment is the digital video monitor system that the present invention is used for certain section highway.
Structural representation of the present invention as shown in Figure 3.Image acquisition module 1 is used the CCD module, and coding module 3 uses DSP and CPU module, and memory module 4 is used hard disc module, and decoder module 5 also uses DSP and CPU module; CCD module 1, analog-to-digital conversion module 2, DSP and CPU module are integrated in the web cam; Hard disc module 4 and DSP and CPU module 5 are integrated in the video server; Display of display module 6 usefulness.
Suppose that highway adorns a web camera every 5 kilometers, adorned 20 altogether, numbering is followed successively by 1 to 20.The output of these web cam all inserts video server by mixed-media network modules mixed-media.Video server is installed in this section freeway management office.
The CCD module 1 of web camera is used for the analog video signal at acquisition monitoring scene and delivers to analog-to-digital conversion module 2;
The analog-to-digital conversion module 2 of web camera is used for analog video signal is done sample quantization, and the output digital video signal is to DSP and CPU module 3;
The DSP of web camera and CPU module 3, be used for digital video signal is carried out compressed encoding according to standard H.264, video flowing behind the generation compressed encoding, the header of this video flowing carries an optional territory as added field, and the value in optional territory is changed to " 0 " earlier; (reason that causes warning can be that illegal parking, railing are crossed, exceed the speed limit, blocked up or the like also will to do alarm detection to the digital video signal of input simultaneously, propose and be attainable by the user), if carve at a time and detect alarm signal, generating a value constantly at this (also can distinguish different alarm source generation different values for the feature tag of " 2 ", as parking violation is " 2 ", railing is crossed to " 3 ", decides according to user's request); The value in above-mentioned optional territory is substituted by the value of this feature tag, and the video flowing of the H.264 standard after the compression of band feature tag is stored on the hard disc module 4;
The hard disc module 4 of video server is used for the video signal flow of the mpeg 4 standard that has the feature tag added field after the stores compression-encoded;
The DSP of video server and CPU module 5 be according to customer requirements, and the storage file of certain web cam correspondence of appointment is retrieved playback.DSP and CPU module 5 read corresponding document from hard disc module 4, do in the process of fast decoding playback detected characteristics label added field simultaneously, when detecting " 2 " in the feature tag added field, change the fast decoding playback into the normal decoder playback; In the playback of beginning fast decoding, decoded vision signal is delivered to display 6;
Display 6 is used for the vision signal of decoding after the playback shown for the user and watches.
Have one day, the freeway management personnel need check alarm signal whether arranged to evening between the 7:00 at that morning 7:50 to the guarded region of No. 8 web cam correspondences, to add up the situation violating the regulations of this section highway in this time period.Promptly need No. 8 web cam that mornings of playback one by one 7:50 to the video file between the evening 7:00, search whether alarm signal is arranged, when alarm signal, the concrete reason that causes warning is checked in the playback video recording.
In general supervisory control system; need artificial playback 8 web cam that morning 7:50 one by one to the vision signal video file between the evening 7:00; the playback speed manual adjustment; if normal playback speed is slow; if playback (2 times of speed, 4 times of speed, 8 times of speed) speed increases, but leaked key picture easily fast.Workload is very big, and because people's visual fatigue has error easily.
Use system of the present invention, on the hard disc module 4 on the video server, preserve the vision signal file that No. 8 web cam pass that morning 7:50 that comes the H.264 form behind the compressed encoding of band feature tag added field between the evening 7:00 simultaneously.DSP on the video server and CPU module 5; these files are done one by one in the process of fast decoding playback detected characteristics label added field simultaneously; when in the feature tag added field, detecting " 2 " (alarm signal is promptly arranged), change normal playback into, check the concrete reason that causes warning.Can shorten the time of manual retrieval's playback so greatly, reduce labour intensity, reduce the error that people's kopiopia is brought.
Claims (4)
1. video stream rapid-playback system based on feature tag, this system comprises image acquisition module, analog-to-digital conversion module, coding module, memory module, decoder module and the display module that connects successively, it is characterized in that:
Described image acquisition module is used for the analog video signal at acquisition monitoring scene and delivers to analog-to-digital conversion module;
Described analog-to-digital conversion module is used for analog video signal is done sample quantization, and the output digital video signal is to coding module;
Described coding module is used for digital video signal is carried out compressed encoding, the video flowing behind the generation compressed encoding; Also to do signature analysis simultaneously to the digital video signal of input, analyze whether specific behavior or special scenes that the user is concerned about have taken place, generate a feature tag according to analysis result, this feature tag is write as an added field on the optional territory of the video flowing behind the compressed encoding, and the video flowing after the compression of band feature tag is stored on the memory module;
Described memory module is used for the video flowing that has the feature tag added field after the stores compression-encoded;
Described decoder module is used for reading the video flowing that has the feature tag added field from memory module, detected characteristics label added field when this video flowing is done the fast decoding playback, when in the feature tag added field, detecting effective value, change the fast decoding playback into normal speed decoding playback; In the playback that begins to decode, decoded vision signal is delivered to display module;
Described display module is used for the vision signal of decoding after the playback shown for the user and watches.
2. the video stream rapid-playback system based on feature tag according to claim 1, it is characterized in that: described decoder module is done the fast decoding playback to video flowing, comprises 2 times of speed decoding playback commonly used in the video monitoring, 4 times of speed decoding playback, 8 times of speed decoding playback, 16 times of speed decoding playback.
3. the video stream rapid-playback system based on feature tag according to claim 1, it is characterized in that: described image acquisition module, analog-to-digital conversion module, coding module, memory module, decoder module and display module, can be integrated in the hardware cell, also can be integrated in a plurality of hardware cells; Can be installed in the same place of video monitoring system, also can be installed in a plurality of different places.
4. the video stream rapid-playback system based on feature tag according to claim 1 is characterized in that: described coding module carries out compressed encoding to digital video signal, and the compressed encoding standard comprises mpeg 4 standard, H.264 standard, AVS standard; Described decoder module uses the standard consistent with coding module when decoding playback.
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| CN104735385A (en) * | 2015-03-31 | 2015-06-24 | 小米科技有限责任公司 | Playing control method and device and electronic equipment |
| CN105205083A (en) * | 2014-06-27 | 2015-12-30 | 国际商业机器公司 | Method and equipment for browsing content by means of key points in progress bar |
| CN105245817A (en) * | 2014-06-19 | 2016-01-13 | 深圳中兴力维技术有限公司 | Video playback method and video playback device |
| CN105453573A (en) * | 2013-06-27 | 2016-03-30 | 英国电讯有限公司 | Provision of video data |
| CN105933634A (en) * | 2016-06-14 | 2016-09-07 | 努比亚技术有限公司 | Video playing control device, playing terminal and video unequal-speed playing control method |
| CN110337022A (en) * | 2019-06-11 | 2019-10-15 | 福建天泉教育科技有限公司 | Video variable playback method based on attention rate, storage medium |
| CN111491166A (en) * | 2019-12-15 | 2020-08-04 | 王娟 | Dynamic compression system and method based on content analysis |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105453573A (en) * | 2013-06-27 | 2016-03-30 | 英国电讯有限公司 | Provision of video data |
| CN105245817A (en) * | 2014-06-19 | 2016-01-13 | 深圳中兴力维技术有限公司 | Video playback method and video playback device |
| CN105245817B (en) * | 2014-06-19 | 2019-08-30 | 深圳力维智联技术有限公司 | Video recording playback method and its device |
| CN105205083A (en) * | 2014-06-27 | 2015-12-30 | 国际商业机器公司 | Method and equipment for browsing content by means of key points in progress bar |
| CN104735385A (en) * | 2015-03-31 | 2015-06-24 | 小米科技有限责任公司 | Playing control method and device and electronic equipment |
| CN104735385B (en) * | 2015-03-31 | 2018-10-12 | 小米科技有限责任公司 | Control method for playing back and device, electronic equipment |
| US10217487B2 (en) | 2015-03-31 | 2019-02-26 | Xiaomi Inc. | Method and device for controlling playback |
| CN105933634A (en) * | 2016-06-14 | 2016-09-07 | 努比亚技术有限公司 | Video playing control device, playing terminal and video unequal-speed playing control method |
| CN110337022A (en) * | 2019-06-11 | 2019-10-15 | 福建天泉教育科技有限公司 | Video variable playback method based on attention rate, storage medium |
| CN110337022B (en) * | 2019-06-11 | 2022-04-12 | 福建天泉教育科技有限公司 | Attention-based video variable-speed playing method and storage medium |
| CN111491166A (en) * | 2019-12-15 | 2020-08-04 | 王娟 | Dynamic compression system and method based on content analysis |
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