CN103327278A - Real time sharing method and device of images - Google Patents
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- CN103327278A CN103327278A CN2013102889082A CN201310288908A CN103327278A CN 103327278 A CN103327278 A CN 103327278A CN 2013102889082 A CN2013102889082 A CN 2013102889082A CN 201310288908 A CN201310288908 A CN 201310288908A CN 103327278 A CN103327278 A CN 103327278A
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Abstract
The invention discloses a real time sharing method of images. The method comprises the following steps of: invoking a source filter by means of at least one application program; invoking a video collecting program by the source filter to collect image data by the video collecting program; writing the image data collected to a shared memory; and reading the image data stored in the shared memory by the source filter, and returning the read image data to the at least one application program so as to display images by the application program according to the image data. The invention further discloses a real time sharing device of images.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of image Real-Time Sharing method and device.
Background technology
Development along with the Internet, it is more and more perfect that network becomes, wherein, Video chat is exactly a product of network Development, in fact Video chat is exactly to utilize web technologies, client-side technology to use visual digital instrument to come in for a chat, wherein, can be used for the instrument of Video chat has camera, and general camera adopts USB interface.Camera is called again camera computer, computer eyes etc. are a kind of video input apparatus, are applied to widely video conference, the aspect such as tele-medicine and Real Time Monitoring, common people especially can be each other has image at network, talk and the communication of sound is arranged by camera.
When user 1 opens camera and user 2 when carrying out Video chat, if user 1 also wants to carry out Video chat with user 3, must close then that camera finishes and user 2 between Video chat, reopen again camera and realize Video chat between the user 3.But, when user 1 thinks simultaneously to carry out Video chat with user 2 and user 3 or even more user, because the USB camera has the problem that can not open more, so that user 1 can only select one of them user to carry out Video chat, and can not exchange by video simultaneously with a plurality of users.
Summary of the invention
In view of this, the main purpose of the embodiment of the invention is to provide a kind of image Real-Time Sharing method and system, can not convince the problem that the image that causes can not be shared by patient analysis to solve camera more.
For achieving the above object, the embodiment of the invention provides a kind of image Real-Time Sharing method, comprising:
Utilize at least one application call supply filter;
Utilize described supply filter to call the video acquisition program, so that described video acquisition programmed acquisition view data;
Described video acquisition program writes shared drive with the described view data that collects;
Utilize described supply filter to read the view data of storing in the described shared drive, and the described view data that reads is back to described at least one application program, show image to utilize described application program according to described view data.
Preferably, in said method, the described view data of utilizing described supply filter to read and store in the described shared drive comprises:
Monitor and whether write new view data in the described shared drive;
When writing new view data in the described shared drive, send Data Update message to described supply filter;
After described supply filter receives described Data Update message, read described new view data according to described Data Update message.
Preferably, in said method, when described video acquisition program writes shared drive with described view data, the image identification corresponding with described view data write described shared drive.
Preferably, in said method, carry described image identification in the described Data Update message;
Describedly read described new view data according to described Data Update message and comprise:
Obtain the image identification that carries in the described Data Update message;
Read the view data corresponding with described image identification of storing in the described shared drive according to described image identification.
Preferably, in said method, described view data is the image of camera collection, or video file or picture, described video file or picture be prestore or download from network.
The embodiment of the invention also provides a kind of image Real-Time Sharing device, comprising:
The first calling module is used for utilizing at least one application call supply filter;
The second calling module is used for utilizing described supply filter to call the video acquisition program, so that described video acquisition programmed acquisition view data;
The data writing module is used for utilizing the described view data that collects is write shared drive;
Data read module is used for utilizing described supply filter to read the view data that described shared drive is stored;
Data passback module is used for the described view data that reads is back to described at least one application program;
Image display is used for utilizing described application program to show image according to the view data of described passback.
Preferably, in said apparatus, described data read module comprises:
The data monitoring unit is used for monitoring described shared drive and whether writes new view data;
The update notification unit is used for sending Data Update message to described supply filter when described shared drive writes new view data;
Data-reading unit is used for reading described new view data according to described Data Update message after described supply filter receives described Data Update message.
Preferably, in said apparatus,
Described data writing module also is used for when described view data is write shared drive the image identification corresponding with described view data being write described shared drive.
Preferably, in said apparatus, carry described image identification in the described Data Update message;
Described data-reading unit comprises:
Sign is obtained subelement, is used for obtaining the image identification that described Data Update message is carried;
Data read subelement, are used for reading the view data corresponding with described image identification that described shared drive is stored according to described image identification.
Preferably, in said apparatus, described view data is the image of camera collection, or video file or picture, described video file or picture be prestore or download from network.
Image Real-Time Sharing method and device that the embodiment of the invention provides, utilize at least one application call supply filter, utilize described supply filter to call the video acquisition program, so that described video acquisition programmed acquisition view data, and the described view data that collects write shared drive, recycle described supply filter and read the view data of storing in the described shared drive, and the described view data that reads is back to described at least one application program, show image to utilize described application program according to described view data.As seen, the present embodiment is after camera is opened, be stored in the shared drive by the view data that will from the USB camera, collect, the recycling application program shows by supply filter reads image data from shared drive and gets final product, remove to gather image and needn't again open the USB camera, solve the problem that camera can not be opened more, realized the purpose of image Real-Time Sharing and net cast.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the principle schematic that the embodiment of the invention realizes Image Sharing;
Fig. 2 is the schematic flow sheet of the embodiment one of embodiment of the invention image Real-Time Sharing method;
Fig. 3 is the schematic flow sheet of the embodiment two of embodiment of the invention image Real-Time Sharing method;
Fig. 4 is the schematic flow sheet of the embodiment three of embodiment of the invention image Real-Time Sharing method;
Fig. 5 is the structural representation of embodiment of the invention image Real-Time Sharing device;
Fig. 6 is the structural representation of embodiment of the invention data read module.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The DirectShow system uses a kind of model that is filter chart (filter graph) to manage the processing procedure of whole data flow, it uses a modular framework, each processing procedure is called the filter(filter by one) com object realize, wherein, Source Filter(supply filter) effect is to introduce data to be in the filter chart (filtergraph), the source of described introducing data can be file, network, camera, make a video recording first-class, different supply filters is processed dissimilar data source.The embodiment of the invention mainly is to utilize the purpose of Source Filter and Sharing Memory Realization image Real-Time Sharing.
Before specifically introducing the embodiment of the invention, at first idiographic flow of the present invention is carried out concise and to the point introduction: referring to the principle schematic of realization Image Sharing shown in Figure 2, before realizing the present invention, need the Source Filter that exploitation is good to be packaged into installation kit and offer user installation, then, making Source Filter can be employed procedure identification by installation registration Source Filter calls.Application program is called after the Source Filter by DirectShow, Source Filter starts capture program, capture program calls the USB camera by DirectShow, and from the USB camera, obtain view data by DirectShow, then the view data that gets access to is write in the shared drive; When application program during to Source Filter request msg, Source Filter reading out data and return to application program and carry out image shows from shared drive.
Embodiment one
Referring to shown in Figure 1, the schematic flow sheet of the image Real-Time Sharing method that Fig. 1 provides for the embodiment of the invention, realize that the step of the method comprises:
Step 101: utilize at least one application call supply filter Source Filter.
Drawn two application programs among Fig. 2, expression has two users need to carry out Image Sharing, and two application programs among Fig. 2 just schematically can also have more application program certainly.
Step 102: utilize described supply filter Source Filter to call the video acquisition program, so that described video acquisition programmed acquisition view data.
The present embodiment starts an independently video acquisition program when application call Source Filter, the video acquisition program utilizes DirectShow from the camera collection video data, and data are write shared drive.Wherein, described view data is the image of camera collection, or video file or picture, described video file or picture be prestore or download from network.
Step 103: described video acquisition program writes shared drive with the described view data that collects.
Utilizing the shared drive the transmission of data is the higher data transfer mode of a kind of efficiency of transmission, by the shared drive the transmission of data, has improved efficiency of transmission, has reduced the transfer of data time-delay.
Step 104: utilize described supply filter Source Filter to read the view data of storing in the described shared drive, and the described view data that reads is back to described at least one application program, show image to utilize described application program according to described view data.
Application program is during from Source Filter requested image data, and Source Filter is from the shared drive reads image data and return to application program and carry out image shows.A plurality of application programs are obtained described view data simultaneously, just can carry out simultaneously the demonstration of image, can realize that net cast is to a plurality of users' function.
Embodiment two
Referring to shown in Figure 3, the schematic flow sheet of the image Real-Time Sharing method that Fig. 3 provides for the embodiment of the invention, realize that the step of the method comprises:
Step 201: utilize at least one application call supply filter.
Step 202: utilize described supply filter to call the video acquisition program, so that described video acquisition programmed acquisition view data.
Step 203: described video acquisition program writes shared drive with the described view data that collects.
Step 204: monitor whether write new view data in the described shared drive.
If described video acquisition program constantly can collect new view data, then can constantly there be new view data to write in the shared drive, determine whether deposited new data in the shared drive in by the data variation in the monitoring shared drive.
Step 205: when writing new view data in the described shared drive, send Data Update message to described supply filter.
Step 206: after described supply filter receives described Data Update message, read described new view data according to described Data Update message.
The embodiment of the invention is by sending Data Update message to described supply filter, and coming has new view data to write in the notification source filter shared drive, and supply filter just can go to obtain new view data after receiving Data Update message.
Step 207: described supply filter is back to described at least one application program with the described view data that reads.
Step 208: described application program shows image according to described view data.
Embodiment three
Referring to shown in Figure 4, the schematic flow sheet of the image Real-Time Sharing method that Fig. 4 provides for the embodiment of the invention, realize that the step of the method comprises:
Step 301: utilize at least one application call supply filter.
Step 302: utilize described supply filter to call the video acquisition program, so that described video acquisition programmed acquisition view data.
In the present embodiment, after described video acquisition programmed acquisition view data, can also carry out special effect processing to described view data, add a LOGO(logo or trade mark in the current frame image that for example obtains), perhaps image is carried out special effect processing, at this moment, deposit after treatment view data in shared drive.
Step 303: described video acquisition program writes shared drive with the described view data that collects, and simultaneously the image identification corresponding with described view data is write described shared drive.
Because image is that fixing frame per second is arranged, thus need to regularly write picture to shared drive, or regularly from shared drive, read picture.
Step 304: monitor whether write new view data in the described shared drive.
Step 305: when writing new view data in the described shared drive, send Data Update message to described supply filter, carry described image identification in the described Data Update message.
Step 306: after described supply filter receives described Data Update message, obtain the image identification that carries in the described Data Update message, and read the view data corresponding with described image identification of storing in the described shared drive according to described image identification.
Because can there be a large amount of different data in the shared drive, for so that supply filter reads current required view data, utilize image identification to identify this view data, described supply filter just can read described view data accurately according to this image identification.
Step 307: described supply filter is back to described at least one application program with the described view data that reads.
Step 308: utilize described application program to show image according to described view data.
The content of embodiment for a better understanding of the present invention, the below illustrates the embodiment of the invention:
When user 1 will carry out Video chat simultaneously with user 2 and user 3, utilize the application program 2 of user's 2 correspondences and the application program 3 of user's 3 correspondences to call respectively Source Filter, Source Filter calls the user's 1 that video acquisition programmed acquisition USB camera collection arrives head portrait video, then the video acquisition program can constantly write shared drive with the head portrait video image and stores, when the data of storing in shared drive change, just notify the data in the Source Filter shared drive to change, Source Fiilter is after data change in learning shared drive, just from shared drive playback head as data and the head portrait data of reading are returned to respectively the application program of user 2 and user's 3 correspondences, the head portrait data that the application program of user 2 and user's 3 correspondences recycling is obtained show, have so just realized the user's 1 of USB camera shooting head portrait is presented in user 2 and user's 3 the chat interface.The invention process regular meeting is sent the user's 1 that the USB camera is taken head portrait data into shared drive endlessly, and the computer that user 2 and user 3 also can be read and be sent to the head portrait video data of storing in the shared drive endlessly carries out real-time representing, as seen, utilize a USB camera just can realize sharing of head image information, overcome the problem that the USB camera can not be opened in the prior art more.
The image Real-Time Sharing method that the embodiment of the invention provides, utilize at least one application call supply filter, utilize described supply filter to call the video acquisition program, so that described video acquisition programmed acquisition view data, and the described view data that collects write shared drive, recycle described supply filter and read the view data of storing in the described shared drive, and the described view data that reads is back to described at least one application program, show image to utilize described application program according to described view data.As seen, the present embodiment is after camera is opened, be stored in the shared drive by the view data that will from the USB camera, collect, the recycling application program shows by supply filter reads image data from shared drive and gets final product, remove to gather image and needn't again open the USB camera, solve the problem that camera can not be opened more, realized the purpose of image Real-Time Sharing and net cast.
Embodiment four
Referring to shown in Figure 5, the structural representation of a kind of image Real-Time Sharing device that Fig. 5 provides for the embodiment of the invention, this device comprises:
The first calling module 1 is used for utilizing at least one application call supply filter;
The second calling module 2 is used for utilizing described supply filter to call the video acquisition program, so that described video acquisition programmed acquisition view data;
Data read module 4 is used for utilizing described supply filter to read the view data that described shared drive is stored;
Wherein, described view data is the image of camera collection, or video file or picture, described video file or picture be prestore or download from network.
Wherein, described data writing module 3 also is used for when described view data is write shared drive the image identification corresponding with described view data being write described shared drive.
Referring to shown in Figure 6, the structural representation of the data read module that Fig. 6 provides for the embodiment of the invention, this device comprises:
Described data read module 4 comprises:
Data-reading unit 43 is used for reading described new view data according to described Data Update message after described supply filter receives described Data Update message.Wherein, carry described image identification in the described Data Update message;
Wherein, described data-reading unit 43 comprises:
Sign is obtained subelement 431, is used for obtaining the image identification that described Data Update message is carried;
Data read subelement 432, are used for reading the view data corresponding with described image identification that described shared drive is stored according to described image identification.
The image Real-Time Sharing device that the embodiment of the invention provides, utilize at least one application call supply filter, utilize described supply filter to call the video acquisition program, so that described video acquisition programmed acquisition view data, and the described view data that collects write shared drive, recycle described supply filter and read the view data of storing in the described shared drive, and the described view data that reads is back to described at least one application program, show image to utilize described application program according to described view data.As seen, the present embodiment is after camera is opened, be stored in the shared drive by the view data that will from the USB camera, collect, the recycling application program shows by supply filter reads image data from shared drive and gets final product, remove to gather image and needn't again open the USB camera, solve the problem that camera can not be opened more, realized the purpose of image Real-Time Sharing and net cast.
As seen through the above description of the embodiments, those skilled in the art's all or part of step that can be well understood in above-described embodiment method can realize by the mode that software adds essential general hardware platform.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in the storage medium, such as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be personal computer, server, perhaps such as network communication equipments such as media gateway, etc.) the described method of some part of each embodiment of the present invention or embodiment carried out.
Need to prove, each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For the disclosed method of embodiment, because it is corresponding with the disclosed system of embodiment, so description is fairly simple, relevant part gets final product referring to the components of system as directed explanation.
Also need to prove, in this article, relational terms such as the first and second grades only is used for an entity or operation are separated with another entity or operating space, and not necessarily requires or hint and have the relation of any this reality or sequentially between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby not only comprise those key elements so that comprise process, method, article or the equipment of a series of key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.In the situation that not more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, in other embodiments realization.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an image Real-Time Sharing method is characterized in that, comprising:
Utilize at least one application call supply filter;
Utilize described supply filter to call the video acquisition program, so that described video acquisition programmed acquisition view data;
Described video acquisition program writes shared drive with the described view data that collects;
Utilize described supply filter to read the view data of storing in the described shared drive, and the described view data that reads is back to described at least one application program, show image to utilize described application program according to described view data.
2. method according to claim 1 is characterized in that, the described view data of utilizing described supply filter to read and store in the described shared drive comprises:
Monitor and whether write new view data in the described shared drive;
When writing new view data in the described shared drive, send Data Update message to described supply filter;
After described supply filter receives described Data Update message, read described new view data according to described Data Update message.
3. method according to claim 2 is characterized in that, when described video acquisition program writes shared drive with described view data, the image identification corresponding with described view data is write described shared drive.
4. method according to claim 3 is characterized in that, carries described image identification in the described Data Update message;
Describedly read described new view data according to described Data Update message and comprise:
Obtain the image identification that carries in the described Data Update message;
Read the view data corresponding with described image identification of storing in the described shared drive according to described image identification.
5. according to claim 1 to 4 each described methods, it is characterized in that, described view data is the image of camera collection, or video file or picture, described video file or picture be prestore or download from network.
6. an image Real-Time Sharing device is characterized in that, comprising:
The first calling module is used for utilizing at least one application call supply filter;
The second calling module is used for utilizing described supply filter to call the video acquisition program, so that described video acquisition programmed acquisition view data;
The data writing module is used for utilizing the described view data that collects is write shared drive;
Data read module is used for utilizing described supply filter to read the view data that described shared drive is stored;
Data passback module is used for the described view data that reads is back to described at least one application program;
Image display is used for utilizing described application program to show image according to the view data of described passback.
7. device according to claim 6 is characterized in that, described data read module comprises:
The data monitoring unit is used for monitoring described shared drive and whether writes new view data;
The update notification unit is used for sending Data Update message to described supply filter when described shared drive writes new view data;
Data-reading unit is used for reading described new view data according to described Data Update message after described supply filter receives described Data Update message.
8. device according to claim 7 is characterized in that,
Described data writing module also is used for when described view data is write shared drive the image identification corresponding with described view data being write described shared drive.
9. device according to claim 8 is characterized in that, carries described image identification in the described Data Update message;
Described data-reading unit comprises:
Sign is obtained subelement, is used for obtaining the image identification that described Data Update message is carried;
Data read subelement, are used for reading the view data corresponding with described image identification that described shared drive is stored according to described image identification.
10. according to claim 6 to 9 each described devices, it is characterized in that, described view data is the image of camera collection, or video file or picture, described video file or picture be prestore or download from network.
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| CN112804410A (en) * | 2019-11-14 | 2021-05-14 | 西安诺瓦星云科技股份有限公司 | Multi-display-screen synchronous display method and device, video processing equipment and storage medium |
| CN111114320A (en) * | 2019-12-27 | 2020-05-08 | 深圳市众鸿科技股份有限公司 | Vehicle-mounted intelligent cabin sharing display method and system |
| CN112256060A (en) * | 2020-10-29 | 2021-01-22 | 广东电网有限责任公司 | Method for automatically naming pictures for automatic inspection of power transmission line unmanned aerial vehicle in real time |
| CN112616024A (en) * | 2020-12-31 | 2021-04-06 | 深兰科技（上海）有限公司 | USB camera data acquisition method and device, electronic equipment and storage medium |
| CN112802232A (en) * | 2021-03-22 | 2021-05-14 | 智道网联科技(北京)有限公司 | Video stream data transmission method and related device thereof |
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Application publication date: 20130925 |