CN104079890A - Recording device and method capable of labeling panoramic audio and video information - Google Patents
Recording device and method capable of labeling panoramic audio and video information Download PDFInfo
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Abstract
The invention relates to the technical field of audio and video information acquisition, in particular to a recording device capable of labeling panoramic audios and videos. The recording device comprises video sensors, a sound pick-up, an audio processing module, a label generation module, a label information receiving module, a label information processing module and an index information generation module, wherein the index information generation module is connected with an audio and video information processing module. According to the recording device capable of labeling the panoramic audios and videos, the label generation module generates label information when an important event happens, the index information generation module associates the label information with corresponding audio and video information, then an audio and video index information file is generated, related audio and video clips of the important event can be quickly and conveniently found according to the generated audio and video index information, and therefore the problem that the important audio and video clips are inconvenient to find in the prior art is solved. In addition, by integrating the multiple video sensors in one device, panoramic audio and video information acquisition can be achieved under the condition that the video quality is guaranteed.
Description
Technical field
The present invention relates to audio/video information acquisition technique field, can mark panorama audio/video information tape deck and method in particular to one.
Background technology
For important meeting or security sensitive place, need the on-the-spot audio/video information of the 360 degree undistorted record of panorama, so that the later stage is searched playback.
Although the audio frequency and video that traditional video monitoring equipment can collection site, are difficult to obtain 360 degree panorama information.Although adopt the panoramic video watch-dog of the designs such as fish eye lens can record panorama information, picture distortion is serious, need the later stage to proofread and correct, have a strong impact on the quality of video image.
In addition, existing audio-video acquisition equipment only can produce audio and video data streams, owing to lacking audio frequency and video description metadata, in the time need to searching important audio frequency and video fragment, can only be searched by artificial sequential playback, and length consuming time, searches inconvenience.
Summary of the invention
The object of the present invention is to provide one can mark panorama audio/video information tape deck, one can mark the recording method of panorama audio/video information simultaneously, to solve the problem of above-mentioned important audio frequency and video sheet segment search inconvenience.
The panorama video-with-audio recording device that marks provided by the invention, comprise at least one video sensor, at least one pick-up, at least one mark generation module, label information receiver module and power module, described pick-up is connected with audio processing modules, and described video sensor is all connected with an audio/video information processing module with audio processing modules; Described mark generation module is used for sending label information in the time that event to be marked occurs, and label information is sent to described label information receiver module; Described label information receiver module is connected with label information processing module, and described label information processing module is connected with index information generation module, and described index information generation module connects audio/video information processing module, generates audio frequency and video index information file.
In above-mentioned tape deck, described audio/video information processing module receives the video image information and the audio-frequency information that gather, and by video image information and audio-frequency information synthesized voice video information; In the time that event to be marked occurs, described mark generation module sends label information, and label information is sent to label information receiver module; Described label information processing module is resolved label information; Described index information generation module receive label information after resolving and synthetic after audio/video information, and label information after associated parsing and synthetic after audio/video information, generate audio frequency and video index information file.
As a kind of execution mode, described mark generation module is RFID card reader, and described label information receiver module is the mixed-media network modules mixed-media that receives RFID card reader perception information.
As another kind of execution mode, described mark generation module is remote controller, and described label information receiver module is the radio mark information receiving module that receives the wireless signal that sends of remote controller.Further, described remote controller comprises the memory module, sound identification module and the control module that connect successively, and described control module is connected with sound identification module; Described memory module is for the phonetic feature of the keyword of the event to be marked that prestores; Described audio processing modules Realtime Audio Information Transmission after treatment is to described sound identification module, sound identification module extracts the phonetic feature of real-time audio information, and the phonetic feature of keyword in itself and memory module is identified to judgement, if the phonetic feature of real-time audio information mates with the phonetic feature of pre-stored, control module control signal transmitter module sends label information.
Preferably, described video sensor is at least 4, and 4 video sensors carry out 360 degree full-view video image collections.
The present invention provides one can mark panorama video-with-audio recording method simultaneously, and it comprises the following steps:
Gather video image information and audio-frequency information, and by the video image information gathering and audio-frequency information synthesized voice video information storage;
In audio/video information Real-time Collection process, judge whether event to be marked occurs, if occurred, send label information;
Label information and audio/video information are carried out associated, generate audio frequency and video index informations file.
As a kind of execution mode, in described audio/video information Real-time Collection process, judge whether event to be marked occurs, if occurred, the method for sending label information is: carry out RFID identification, if RFID signal detected, send label information.
As another kind of execution mode, in described audio/video information Real-time Collection process, judge whether event to be marked occurs, if occurred, the method for sending label information is: the phonetic feature that extracts the real-time audio information collecting, and the phonetic feature of the keyword of itself and pre-stored is identified to judgement, if the phonetic feature of real-time audio information mates with the phonetic feature of pre-stored, send label information.
The technique effect that the present invention realizes: the panorama video-with-audio recording device and method that marks provided by the invention, in the time that occurring, critical event produces label information by mark generation module, and by index information generation module connective marker information and corresponding audio/video information, generate audio frequency and video index information file, according to the audio frequency and video index information generating, can find fast, easily the relevant audio frequency and video fragment of critical event, solve the problem of the important audio frequency and video sheet of prior art segment search inconvenience.In addition, by being set, multiple video sensors can in the situation that ensureing video quality, realize panoramic video information gathering.
Brief description of the drawings
Fig. 1 is the structured flowchart that the present invention can mark panorama video-with-audio recording device;
Fig. 2 is the flow chart that the present invention can mark panorama video-with-audio recording method;
Fig. 3 shows a kind of form of expression of index information file.
Embodiment
Below to gather the audio/video information at meeting scene as example, and by reference to the accompanying drawings the present invention is described in further detail.
Consult Fig. 1, the panorama video-with-audio recording device that marks provided by the invention, comprise multiple video sensors 101 and pick-up 102, pick-up 102 connects audio processing modules 103, and video sensor 101 is all connected audio/video information processing module 104 with audio processing modules 103.Video sensor 101 collection site video image informations, and the video image information of collection is transferred to audio/video information processing module 104.A video sensor 101 can be set and carry out video image information collection, but for the full-view video image information of collection site and ensure the quality of video image, 4 or above video sensor 101 are set conventionally and carry out video image information collection.Each video sensor 101 covers certain angle in the horizontal direction, and common 360 degree that cover of multiple video sensors 101, form the full-view video image without dead angle.The angle of coverage of multiple video sensors 101 is can be as required unequal divides, and covers to take into account key area and panorama, and the video sensor that points to key area is can angle of coverage less, to obtain video image more clearly.Certain, can mark panorama video-with-audio recording device and comprise power module 110, power module 110 is whole device power supply.
The audio-frequency information of pick-up 102 collection sites, and the audio-frequency information of collection is transferred to audio processing modules 103.Audio processing modules 103 carries out noise reduction, the echo cancellation process of audio frequency to the audio-frequency information receiving, to improve audio-frequency information quality, audio-frequency information after treatment transfers to audio/video information processing module 104.For ensure collection audio-frequency information know integrality, can one or above pick-up 102 be set according to the size of on-the-spot scope.
Audio/video information processing module 104 receives the audio-frequency information that video image information that multi-channel video transducer 101 gathers and pick-up 102 gather.The video image information that audio/video information processing module 104Jiang Mei road video sensor 101 gathers carries out preliminary treatment, comprise contrast, brightness, color processing and video image candid photograph etc., and pretreated multiple paths of video images is carried out to the video Graphics Processings such as Image Mosaics, image scaling stack, OSD stack, carry out video/audio compression, video/audio overlap-add procedure, the video format that then the audio & video image information after stack is collapsed into standard is kept in memory.Audio/video information processing module 104 interconnection network modules 105, the network interface that audio/video information after treatment provides by mixed-media network modules mixed-media 105 is simultaneously exported in real time.Video-splicing has multiple Splicing model, and as top-bottom layout, ring curtain office, the layout etc. that gives top priority to what is the most important, video-splicing is processed and audio & video overlap-add procedure is prior art, does not do multiple descriptions herein.
The panorama video-with-audio recording device that marks provided by the invention also comprises at least one mark generation module 106, gather in the process of video image information at video sensor 101, mark generation module 106 can send label information by point-to-point mode or network (wired and wireless network).Mark generation module 106 can be remote controller, RFID card reader or the transducer that can perception has the event swarmed into occur, if mark generation module 106 be remote controller, label information is the instruction of remote controller generation; If mark generation module 106 is RFID card reader or the transducer that can perception has the event swarmed into occur, label information is RFID card reader or the information that can perception has the sensor senses that the event swarmed into occurs.Carry out in process in meeting, in the time carrying the someone of rfid card or certain object and enter meeting room, RFID card reader is sent perception information.The perception information that RFID card reader is sent, is received by mixed-media network modules mixed-media 105 to mixed-media network modules mixed-media 105 by wired or wireless Internet Transmission.Mixed-media network modules mixed-media 105 linkage flag message processing modules 108, the label information of reception is transferred to label information processing module 108 by mixed-media network modules mixed-media 105.In the on-the-spot audio-video collection practical application of meeting, label information generation module can also be meeting phonotape and videotape main frame, passes through its interface and gathers microphone handover event information in meeting.Label information generation module can also be that meeting PPT file is play main frame, gathers lantern slide and plays and switch action event information.
Remote controller comprises signal emission module, memory module, sound identification module and control module, and memory module is connected with sound identification module, sound identification module link control module and audio processing modules 103, and control module connects signal emission module.In memory module, be pre-stored with the phonetic feature of the keyword of critical event (being event to be marked).Audio processing modules 103 audio-frequency information after treatment inputs to sound identification module in real time, and sound identification module extracts the phonetic feature in audio-frequency information; Sound identification module extracts the phonetic feature of keyword from memory module simultaneously, and the phonetic feature of keyword and the phonetic feature of the audio-frequency information receiving are in real time identified to judgement, and send the feedback information of recognition result to control module, if both couplings, control module control signal transmitter module sends instruction.Remote controller connects radio mark information receiving module 107 by wireless point-to-point mode, and radio mark information receiving module 107 receives the instruction of remote controller transmitting, and transfers to label information processing module 108.Remote controller is to radio mark information receiving module 107 firing orders, and wireless transmission mechanism can adopt the modes such as infrared, 2.4G is wireless.
Label information processing module 108 is resolved the label information receiving, the address that extracts type, tag content from label information, send the mark generation module 106 of label information, and its address has uniqueness.Tag content is that flag event is described, and while sending a label information as remote controller, its tag content is the keyword matching with pre-stored voice feature.Label information processing module 108 join index information generating module 109, the label information after resolving is transferred to index information generation module 109 by label information processing module 108.Index information generation module 109 connects audio/video information processing module 104, to receive the audio/video information after synthesizing.Label information after the audio and video characteristic information such as moment, crucial frame number, audio-video document size that record of index information generation module 109 associated audio frequency and video and parsing, generates independently audio frequency and video index information file.A kind of implementation of audio frequency and video index information file as shown in Figure 3.Audio frequency and video index information file comprises index file head and N bar index record, and every index record comprises mark descriptor and audio and video characteristic descriptor two parts.Wherein, mark descriptor comprises that type, flag event are described and unique ID of mark generation module 106, and audio and video characteristic descriptor comprises that flag event produces video-with-audio recording moment, crucial frame number, the file word joint number in moment.Can further edit the descriptive information of every index record in audio frequency and video index information file, to describe more accurately the feature of audio/video information.
The present invention provides a kind of simultaneously and has applied the above-mentioned panorama video-with-audio recording device that marks and realize the method for panorama video-with-audio recording of can marking.Consult Fig. 2, the method comprises the following steps:
S100: gather video image information and the audio-frequency information at meeting scene, and by video image information and the storage of audio-frequency information synthesized voice video information.Synthetic audio/video information also can connect display device by network interface and show in real time.
S200: in audio/video information Real-time Collection process, judge whether event to be marked occurs, if occurred, send label information.
In this step, judge whether event to be marked occurs to take various ways to realize.For example wherein a kind of mode is, utilizes RFID card reader to identify, and in the time carrying the someone of rfid card or certain object and enter meeting room, sends label information by RFID card reader.Another mode is utilize remote controller to judge and send label information.Remote controller receives the audio-frequency information of Real-time Collection, and extract the phonetic feature in audio-frequency information, and the phonetic feature of the keyword of the phonetic feature of extract real-time and pre-stored is compared, if both coupling, emission mark information.Another mode is to use meeting phonotape and videotape main frame to gather microphone handover event information in meeting, and microphone handover event information of every collection just produces a label information.
S300: label information and audio/video information are carried out associated, generate independently audio frequency and video index information file.
Owing to having carried out mark in the time that critical event occurs in audio/video information gatherer process, and generate audio frequency and video index information file, can find fast the audio frequency and video fragment that relates to critical event according to audio frequency and video index information file, solve the problem that in prior art, the audio frequency and video fragment of critical event is difficult to search.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. one kind can mark panorama video-with-audio recording device, it is characterized in that, comprise at least one video sensor, at least one pick-up, at least one mark generation module, label information receiver module and power module, described pick-up is connected with audio processing modules, and described video sensor is all connected with an audio/video information processing module with audio processing modules; Described mark generation module is used for sending label information in the time that the time to be marked occurs, and label information is sent to described label information receiver module; Described label information receiver module is connected with label information processing module, and described label information processing module is connected with index information generation module, and described index information generation module connects audio/video information processing module, generates audio frequency and video index information file.
2. the panorama video-with-audio recording device that marks according to claim 1, is characterized in that, described audio/video information processing module receives the video image information and the audio-frequency information that gather, and by video image information and audio-frequency information synthesized voice video information; In the time that event to be marked occurs, described mark generation module sends label information, and label information is sent to label information receiver module; Described label information processing module is resolved label information; Described index information generation module receive label information after resolving and synthetic after audio/video information, and label information after associated parsing and synthetic after audio/video information, generate audio frequency and video index information file.
3. the panorama video-with-audio recording device that marks according to claim 1, is characterized in that, described mark generation module is RFID card reader, and described label information receiver module is the mixed-media network modules mixed-media that receives RFID card reader perception information.
4. the panorama video-with-audio recording device that marks according to claim 1, is characterized in that, described mark generation module is remote controller, and described label information receiver module is the radio mark information receiving module that receives the wireless signal that sends of remote controller.
5. the panorama video-with-audio recording device that marks according to claim 4, is characterized in that, described remote controller comprises the memory module, sound identification module and the control module that connect successively, and described control module is connected with sound identification module; Described memory module is for the phonetic feature of the keyword of the event to be marked that prestores; Described audio processing modules Realtime Audio Information Transmission after treatment is to described sound identification module, sound identification module extracts the phonetic feature of real-time audio information, and the phonetic feature of keyword in itself and memory module is identified to judgement, if the phonetic feature of real-time audio information mates with the phonetic feature of pre-stored, control module control signal transmitter module sends label information.
6. the panorama video-with-audio recording device that marks according to claim 1, it is characterized in that, described mark generation module is multiple, and at least one mark generation module is that RFID card reader, remote controller, audio-video main frame, PPT file are play one or more in main frame; Described label information receiver module is two, and one of them label information receiver module is mixed-media network modules mixed-media, and another label information receiver module is the radio mark information receiving module that receives the wireless signal that sends of remote controller.
7. the panorama video-with-audio recording device that marks according to claim 1, is characterized in that, described video sensor is at least 4, and 4 video sensors carry out 360 degree full-view video image collections.
8. can mark a panorama video-with-audio recording method, it is characterized in that, comprise the following steps:
Gather video image information and audio-frequency information, and by the video image information gathering and audio-frequency information synthesized voice video information storage;
In audio/video information Real-time Collection process, judge whether event to be marked occurs, if occurred, send label information;
Label information and audio/video information are carried out associated, generate audio frequency and video index informations file.
9. the panorama video-with-audio recording method that marks according to claim 8, it is characterized in that, in described audio/video information Real-time Collection process, judge whether event to be marked occurs, if occurred, the method for sending label information is: carry out RFID identification, if RFID signal detected, send label information.
10. the panorama video-with-audio recording method that marks according to claim 8, it is characterized in that, in described audio/video information Real-time Collection process, judge whether event to be marked occurs, if occurred, the method for sending label information is: the phonetic feature that extracts the real-time audio information collecting, and the phonetic feature of the keyword of itself and pre-stored is identified to judgement, if the phonetic feature of real-time audio information mates with the phonetic feature of pre-stored, send label information.
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