CN102238421A - Multi-path video synchronous transmission method, device and system - Google Patents
Multi-path video synchronous transmission method, device and system Download PDFInfo
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- CN102238421A CN102238421A CN2010101598423A CN201010159842A CN102238421A CN 102238421 A CN102238421 A CN 102238421A CN 2010101598423 A CN2010101598423 A CN 2010101598423A CN 201010159842 A CN201010159842 A CN 201010159842A CN 102238421 A CN102238421 A CN 102238421A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2365—Multiplexing of several video streams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8358—Generation of protective data, e.g. certificates involving watermark
Abstract
The embodiment of the invention discloses a multi-path video synchronous transmission method, a multi-path video synchronous transmission device and a multi-path video synchronous transmission system. At a video transmitter, the method comprises the following steps of: acquiring a plurality of paths of videos, wherein each path of video comprises a plurality of frames of images; adding watermarks to each frame of image, wherein the watermarks added to the plurality of frames of images in the plurality of paths of acquired videos in the same time period are the same; and transmitting the images to which the watermarks are added to a video receiver. At the video receiver, the method comprises the following steps of: receiving the images to which the watermarks are added; extracting corresponding watermark codes from each frame of image by adopting an extraction way matched with the watermark addition way of the video transmitter; and synchronously outputting each frame of image with the same watermark codes. The method, the device and the system are applied to the synchronous transmission of the plurality of paths of videos in the multi-path video transmission system.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of multi-channel video synchronization transfer method, Apparatus and system.
Background technology
At present, along with the development of mechanics of communication, video conference has obtained carrying out widely and using.Video conference can be understood as the Video Conference Service on the ordinary meaning, by the multimedia communication means, utilizes television equipment and communication network to hold a meeting, and can realize image, the voice between two places or a plurality of place, the interactive function of data simultaneously.In video conference, the scene that multi-channel video transmits simultaneously can appear usually, in order to guarantee the synchronous fully of picture, need export synchronously at the multi-channel video receiving terminal by the multi-channel video that the multi-channel video transmitting terminal obtains synchronously.
In the prior art, the environment of multi-channel video transmission can provide to greatest extent that low delay guarantees, and in the multi-channel video transmission course, and is all identical to the processing operation that each road video is carried out, thereby can guarantee the synchronous transmission of multi-channel video automatically.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:
Because the picture material of each road video there are differences, difference may occur to processing time of each road video, thereby the multi-channel video that causes obtaining synchronously can not be exported synchronously at the multi-channel video receiving terminal.
Summary of the invention
Embodiments of the invention provide a kind of multi-channel video synchronization transfer method, Apparatus and system, can guarantee that the multi-channel video that will obtain synchronously exports synchronously.
The technical scheme that the embodiment of the invention adopts is:
A kind of multi-channel video synchronization transfer method comprises:
Obtain multi-channel video, wherein, each road video comprises multiple image respectively;
For each two field picture adds watermark, wherein, the watermark that multiple image added in the multi-channel video that obtains in the same period is identical;
The image that adds watermark is sent to video receiver.
A kind of multi-channel video synchronization transfer method comprises:
Receive the image that adds watermark;
Adopt with video sending end and add the extracting mode that watermark is complementary, from each two field picture, extract corresponding watermark code;
Each two field picture that will have the same watermark sign indicating number is exported simultaneously.
A kind of multi-channel video synchronous transmission device comprises:
Video acquiring module is used to obtain multi-channel video, and wherein, each road video comprises multiple image respectively;
Add module, be used to each two field picture to add watermark, wherein, the watermark that multiple image added in the multi-channel video that obtains in the same period is identical;
Sending module, the image that is used for adding watermark sends to video receiver.
A kind of multi-channel video synchronous transmission device comprises:
Receiver module is used to receive the image that adds watermark;
Extraction module is used to adopt with video sending end and adds the extracting mode that watermark is complementary, and extracts corresponding watermark code from each two field picture;
Output module is used for each two field picture with same watermark sign indicating number is exported simultaneously.
A kind of multi-channel video synchronous transmission system comprises video sending end and video receiver, wherein,
Described video sending end is used to obtain multi-channel video, wherein, each road video comprises multiple image respectively, for each two field picture adds watermark, wherein, the watermark that multiple image added in the multi-channel video that obtains in the same period is identical, and the image that adds watermark is sent to video receiver;
Described video receiver, the image that is used for the interpolation watermark of receiver, video transmitting terminal transmission, adopt with video sending end and add the extracting mode that watermark is complementary, extract corresponding watermark code from each two field picture, each two field picture that will have the same watermark sign indicating number is exported simultaneously.
Embodiment of the invention multi-channel video synchronization transfer method, Apparatus and system, video sending end is that each two field picture that obtains adds watermark, the watermark information that each two field picture added that obtains in the same period is identical, video receiver adopts with video sending end and adds the extracting mode that watermark is complementary, by extracting corresponding watermark code in each two field picture, each two field picture that will have the same watermark sign indicating number is exported synchronously.Compared with prior art, watermarked in the present invention's each two field picture in the multi-channel video that gets access to, because in the video transmission process, the watermark in the image can not lost, so when video is exported, can be according to the multi-channel video that obtains simultaneously being exported synchronously by the watermark code of extracting in the image.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The multi-channel video synchronization transfer method flow chart that Fig. 1 provides for the embodiment of the invention one;
The multi-channel video synchronization transfer method flow chart that Fig. 2 provides for the embodiment of the invention two;
The multi-channel video synchronization transfer method flow chart that Fig. 3 provides for the embodiment of the invention three;
Fig. 3 a adds schematic diagram for the watermark that the embodiment of the invention three provides;
The multi-channel video synchronous transmission device structural representation that Fig. 4 provides for the embodiment of the invention four;
The multi-channel video synchronous transmission device structural representation that Fig. 5 provides for the embodiment of the invention five;
The multi-channel video synchronous transmission device structural representation that Fig. 6 provides for the embodiment of the invention six;
The multi-channel video synchronous transmission device structural representation that Fig. 7 provides for the embodiment of the invention seven;
The multi-channel video synchronous transmission system structural representation that Fig. 8 provides for the embodiment of the invention eight.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only 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 all other embodiment that obtained under the creative work prerequisite.
For the advantage that makes technical solution of the present invention is clearer, the present invention is elaborated below in conjunction with drawings and Examples.
Embodiment one
Present embodiment provides a kind of multi-channel video synchronization transfer method, and as shown in Figure 1, in video sending end, described method comprises:
101, obtain multi-channel video, wherein, each road video comprises continuous multiple image respectively;
Multi-channel video recited above is the multi-channel video that need show synchronously.
102, for each two field picture adds watermark, wherein, the watermark that multiple image added in the multi-channel video that obtains in the same period is identical;
103, the image that adds watermark is sent to video receiver.
Above-mentioned video sending end includes but not limited to: broadcast television terminals such as portable terminals such as multi-channel video conference terminal, mobile phone, TV.
Embodiment of the invention multi-channel video synchronization transfer method, video sending end are that each two field picture that obtains adds watermark, and the watermark information that each two field picture added that obtains in the same period is identical, and the image that adds watermark is sent to video receiver.Compared with prior art, watermarked in the present invention's each two field picture in the multi-channel video that gets access to, because in the video transmission process, the watermark in the image can not lost, so when video is exported, can be according to the multi-channel video that obtains simultaneously being exported synchronously by the watermark code of extracting in the image.
Embodiment two
Present embodiment provides a kind of multi-channel video synchronization transfer method, and as shown in Figure 2, at video receiver, described method comprises:
201, receive the image that adds watermark;
202, employing and video sending end are added the extracting mode that watermark is complementary, and extract corresponding watermark code from each two field picture;
203, each two field picture that will have the same watermark sign indicating number is exported simultaneously.
Embodiment of the invention multi-channel video synchronization transfer method, the image of the interpolation watermark that video receiver receiver, video transmitting terminal sends, wherein, the watermark code of obtaining in the same period that each two field picture added is identical, video receiver adopts with video sending end and adds the extracting mode that watermark is complementary, by extracting corresponding watermark code in each two field picture, each two field picture that will have the same watermark sign indicating number is exported synchronously.Compared with prior art, because in the video transmission process, the watermark in the image can not lost, so when video is exported, can be according to the multi-channel video that obtains simultaneously being exported synchronously by the watermark code of extracting in the image.
Embodiment three
Present embodiment provides a kind of multi-channel video synchronization transfer method, and as shown in Figure 3, described method comprises:
301, video sending end is obtained multi-channel video, and wherein, each road video comprises multiple image respectively;
Wherein, every road video comprises continuous multiple image, and described multiple image is the input video transmitting terminal successively, that is to say, the asynchronism(-nization) of every two field picture input video transmitting terminal.
302, video sending end is obtained the watermark code of each two field picture correspondence according to the acquisition time of each two field picture;
Wherein, for the two field picture in one road video, corresponding fixing watermark code of each time period, described watermark code is a bit sequence.For example: for the video image of a 60HZ, 60 frame image datas are arranged each second, that is to say, every 1/60=16.667ms just has a frame image data.In the time period of 0-16.667ms, watermark code is all identical so; In the time period of 16.667-33.333ms, watermark code respective change 1.Wherein, the description precision of watermark code can be determined according to the design of system, for example uses the numerical value of a 8bit to represent watermark code, and the watermark code value is described from 0-255 exactly so.
According to same computational methods, calculate the watermark code of the every two field picture correspondence in each video image.Because multi-channel video is the input video transmitting terminal simultaneously, therefore, for each two field picture of input video transmitting terminal in the same period, the watermark code of described each two field picture correspondence is identical.
Watermark code can generate by the generating algorithm of establishing in the video sending end.Be appreciated that, consider the instantaneity of image processing and transmission, also can consider to set up a watermark code table in video sending end inside, wherein arrange several watermark code in regular turn, the corresponding watermark code of the acquisition time of each image is according to the acquisition time of image, can select watermark code in the corresponding watermark code table as watermark information in regular turn, add in the corresponding image, also can be by from the watermark code table, selecting watermark code randomly, as long as guarantee that former and later two watermark code do not repeat.
303, video sending end is added watermark according to the watermark code of each two field picture correspondence in image.
Particularly, for a two field picture, according to the watermark code of this image correspondence, the process of adding watermark in this image can comprise:
S1, be defined as the specific region that this two field picture adds watermark.
Shown in Fig. 3 a, in the present embodiment, described specific region is a little image-region in the upper left corner of this image, width (W, be Width) be 70pixels (number of pixels), highly (H, i.e. Height) is 40pixels, wherein, W is the width of this image, and H is the height of this image.Be appreciated that the width value of above-mentioned selection to the specific region and height value are based on one of present embodiment for example, in concrete realization, can select other numerical value.
S2, described specific region is divided into a plurality of zonules.
In the present embodiment, this specific region is divided in the horizontal direction 4 equal zonules.Described 4 equal zonules are not fixed, and in the detailed process of the embodiment of the invention, can adopt other setting yet.
S3, according to the value of each bit in this watermark code, Fill Color in each bit corresponding district territory, wherein, the color of filling in the corresponding zonule of each bit, the value of bit and zonule is corresponding.
In the present embodiment, according to the value of hanging down 4 bits of this watermark code,, mate from left to right on described 4 zonules according to order from high to low.If the value of bit is " 1 ", then the corresponding district territory is filled to white; If the value of bit is " 0 ", then the corresponding district territory is filled to black.
For example, the watermark code of a two field picture correspondence that calculates in the step 302 is " 0101 ", and based on binary system or gray level image, then shown in Fig. 3 a, the color that fill from left to right successively 4 zonules in this specific region is: black, white, black, white.
Be appreciated that generation, also have other generating mode at watermark code.For example: at gray level image, can be according to [0,255] gray scale is selected the filling value of corresponding value as watermark code, for coloured image, can adopt the RGB color space, select the filling value of corresponding RGB component, this as watermark code, embodiments of the invention are not done any restriction, the technical staff of image processing field the generating mode of the watermark code that can expect can be applied in the embodiments of the invention.
According to the described method of in image, adding watermark of step S1-S3,, in each two field picture, add watermark according to the watermark code of each two field picture correspondence.
Certainly, the mode of adding watermark according to the watermark code of image correspondence in image is not limited only to the described method of step S1-S3, also can adopt other to add the mode of watermark in actual applications.
304, video sending end sends the image that adds watermark to video receiver.
Wherein, each road video transmits to video receiver by different passages, and in the video transmission process, each road video image needs respectively through processing such as image encoding, Network Transmission, picture decodings.Because the watermark of adding in the image is embedded in the image in the mode of picture material, therefore, only otherwise the operations such as replacement, cutting of image occur, the watermark that embeds in the image can not lost, thereby can guarantee can not be affected when video sending end is the watermark arrival video receiver of image interpolation.
305, video receiver adopts with video sending end and adds the mode that watermark is complementary and extracts, and extracts corresponding watermark code from each two field picture.
Particularly, be complementary with the method for image interpolation watermark in the step 303, for a two field picture, the process of being extracted watermark code by this two field picture can comprise:
L1, determine that video sending end is the specific region that image adds watermark;
L2, determine that video sending end is a plurality of zonules that described specific region is divided;
L3, according to the color of image in each zonule, obtain with each zonule in the value of the corresponding bit of color of image, the value of each bit is formed a bit sequence, wherein, the corresponding bit in each zonule, the color of filling in the zonule is corresponding with the value of bit.
In the multi-channel video transmission system, video sending end and video receiver are arranged the position of specific region, the dividing mode of zonule in advance, and the corresponding relation of the color of filling in the watermark code of image correspondence and the image.Therefore, video receiver can be the color of each zonule filling of image specific region according to video sending end, extracts the watermark code of this two field picture correspondence.
For example: shown in Fig. 3 a, according to the agreement of video sending end, video receiver determines in this two field picture upper left corner that width is W/70, highly is the specific region of H/40, and 4 equal zonules in definite this specific region, because these 4 zonule colors from left to right are followed successively by: black, white, black, white, therefore, according to the corresponding relation of the color of filling in watermark code corresponding with the image of video sending end agreement and the image, the watermark code that video receiver can extract this two field picture correspondence is " 0101 ".
306, video receiver carries out the watermark elimination of hidden to the watermark overlay area in the image.
Embed because the interpolation of watermark is the mode with picture material, therefore can cause the picture material of watermark overlay area and general image content inharmonious.After having extracted watermark code, need carry out the watermark elimination of hidden to the watermark overlay area.
Particularly, describedly the watermark elimination of hidden is carried out in watermark overlay area in the image can comprise:
The average pixel value of each pixel in T1, the computed image beyond the watermark overlay area;
T2, the color of described average pixel value correspondence is filled into described watermark overlay area.
After the watermark elimination of hidden, can guarantee that the image frame integral body of exporting is consistent, and avoids the influence of watermark to the view picture picture effect.
Certainly, the mode of watermark elimination of hidden is not limited thereto, and also can adopt the mode of other watermark elimination of hidden in actual applications.
307, video receiver each two field picture that will have a same watermark sign indicating number is exported simultaneously.
Through after the watermark extracting, every two field picture all has watermark code information, and the image with same watermark code value that each channel transfer is come is simultaneously to display device output, thereby guarantees the synchronous output of each road video.
Embodiment of the invention multi-channel video synchronization transfer method, video sending end is that each two field picture that obtains adds watermark, the watermark information that each two field picture added that obtains in the same period is identical, video receiver adopts with video sending end and adds the extracting mode that watermark is complementary, by extracting corresponding watermark code in each two field picture, each two field picture that will have the same watermark sign indicating number is exported synchronously.Compared with prior art, watermarked in the present invention's each two field picture in the multi-channel video that gets access to, because in the video transmission process, the watermark in the image can not lost, so when video is exported, can be according to the multi-channel video that obtains simultaneously being exported synchronously by the watermark code of extracting in the image; In addition, before video output, video receiver carries out elimination of hidden with the watermark overlay area in the image, thereby can guarantee that the image frame integral body of exporting is consistent, and avoids the influence of watermark to the entire image picture effect.
Embodiment four
Present embodiment provides a kind of multi-channel video synchronous transmission device, and as shown in Figure 4, described device comprises:
In concrete implementation procedure, video acquiring module 41 can be image collecting device, specifically, can be video camera, scanner, camera, video tape recorder etc., collect multi-channel video by a plurality of image collecting devices, the resolution of described video can be the SD form, as: QCIF, CIF, 4CIF, perhaps high-definition format: 720P, 1080P etc.
Add module 42, be used to each two field picture to add watermark, wherein, the watermark that multiple image added in the multi-channel video that obtains in the same period is identical;
In concrete implementation procedure, above-mentioned interpolation module 42 can realize the interpolation of watermark in the image by the mode of software, also can pass through hardware mode, as: image processor, the mode of image synthesizer realizes.
Sending module 43, the image that is used for adding watermark sends to video receiver.
In concrete implementation procedure, sending module 43 can send the above-mentioned image that has added watermark by wired mode or wireless mode, described wired mode includes but not limited to: coaxial cable, optical fiber etc., described wireless mode includes but not limited to: modes such as GSM, 3G, WiFi, WiMAX.
Embodiment of the invention multi-channel video synchronous transmission device, video sending end are that each two field picture that obtains adds watermark, and the watermark information that each two field picture added that obtains in the same period is identical, and the image that adds watermark is sent to video receiver.Compared with prior art, watermarked in the present invention's each two field picture in the multi-channel video that gets access to, because in the video transmission process, the watermark in the image can not lost, so when video is exported, can be according to the multi-channel video that obtains simultaneously being exported synchronously by the watermark code of extracting in the image.
Embodiment five
Present embodiment provides a kind of multi-channel video synchronous transmission device, and as shown in Figure 5, described device comprises:
Wherein, every road video comprises continuous multiple image, and described multiple image is the input video transmitting terminal successively, that is to say, the asynchronism(-nization) of every two field picture input video transmitting terminal.
Add module 42, be used to each two field picture to add watermark, wherein, the watermark that multiple image added in the multi-channel video that obtains in the same period is identical;
Sending module 43, the image that is used for adding watermark sends to video receiver.
Further, described interpolation module 42 can comprise:
Acquiring unit 421 is used for the acquisition time according to image, obtains the watermark code of described image correspondence, and wherein, described watermark code is a bit sequence;
Wherein, for each two field picture of while input video transmitting terminal, the watermark code of described each two field picture correspondence is identical;
Further, described acquiring unit 421 can comprise at least and generate subelement 4211 and search in the subelement 4212 one, wherein,
Described generation subelement 4211 is used for generating the watermark code corresponding with the acquisition time of described image by default algorithm;
The described subelement 4212 of searching, be used for searching the watermark code corresponding with the acquisition time of described image by default watermark code table, wherein, in described watermark code table, arrange several watermark code in regular turn, the corresponding watermark code of the acquisition time of each image, acquisition time according to image, can select watermark code in the corresponding watermark code table as watermark information in regular turn, add in the corresponding image, also can be by from the watermark code table, selecting watermark code randomly, as long as guarantee that former and later two watermark code do not repeat
Further, described filler cells 422 can comprise:
Determine subelement 4221, be used to be defined as the specific region that described image adds watermark;
Consider in the piece image, ROI (Region of Interest, be user's area-of-interest) generally be distributed in the central area of image, for fear of the interference to the ROI zone, the specific region of above-mentioned selected interpolation watermark generally is placed on edge of image zone or corner regions.
Wherein, described definite subelement 4221 determines that the mode of specific regions, described division subelement 4222 are divided into the mode of zonule with the specific region, and the mode of filling subelement 4223 Fill Color in each zonule is determined according to the setting of system.
Embodiment of the invention multi-channel video synchronous transmission device, video sending end are that each two field picture that obtains adds watermark, and the watermark information that each two field picture added that obtains in the same period is identical, and the image that adds watermark is sent to video receiver.Compared with prior art, watermarked in the present invention's each two field picture in the multi-channel video that gets access to, because in the video transmission process, the watermark in the image can not lost, so when video is exported, can be according to the multi-channel video that obtains simultaneously being exported synchronously by the watermark code of extracting in the image.
Embodiment six
Present embodiment provides a kind of multi-channel video synchronous transmission device, and as shown in Figure 6, described device comprises:
Above-mentioned receiver module 61 can be by wired or wireless mode, and described wired mode includes but not limited to: coaxial cable, optical fiber etc., described wireless mode includes but not limited to: modes such as GSM, 3G, WiFi, WiMAX.
Said extracted module 62 can be handled by the mode of image processing software and obtain, and also can obtain by corresponding image processor hardware extraction.
Embodiment of the invention multi-channel video synchronous transmission device, the image of the interpolation watermark that video receiver receiver, video transmitting terminal sends, wherein, the watermark code that each two field picture that obtains in the same period adds is identical, video receiver adopts with video sending end and adds the extracting mode that watermark is complementary, by extracting corresponding watermark code in each two field picture, each two field picture that will have the same watermark sign indicating number is exported synchronously.Compared with prior art, because in the video transmission process, the watermark in the image can not lost, so when video is exported, can be according to the multi-channel video that obtains simultaneously being exported synchronously by the watermark code of extracting in the image.
Embodiment seven
Present embodiment provides a kind of multi-channel video synchronous transmission device, and as shown in Figure 7, described device comprises:
Further, described extraction module 62 can comprise:
First determining unit 621 determines that video sending end is the specific region that image adds watermark;
Second determining unit 622 is used for a plurality of zonules of determining that video sending end is divided described specific region;
Wherein, video sending end and video receiver are arranged the position of specific region, the dividing mode of zonule in advance, and the corresponding relation of the color of filling in the watermark code of image correspondence and the image.Therefore, extraction unit 623 can be the color of each zonule filling of image specific region according to video sending end, extracts the watermark code of this image correspondence.
Wherein, the zonule that the specific region that described first determining unit 621 is determined, described second determining unit 423 are determined in the specific region, and extraction unit 623 adds the mode of watermark code and determines according to the watermark code of the color extraction image correspondence of filling in each zonule according to video sending end.
Further, described device can also comprise:
Embed because the interpolation of watermark is the mode with picture material, therefore can cause the picture material of watermark overlay area and general image content inharmonious.After having extracted watermark code, need carry out the watermark elimination of hidden to the watermark overlay area, be consistent with the image frame integral body that guarantees output, avoid the influence of watermark to the entire image picture effect.
Alternatively, described processing module 64 can comprise:
Embodiment of the invention multi-channel video synchronous transmission device, the image of the interpolation watermark that video receiver receiver, video transmitting terminal sends, wherein, the watermark code that each two field picture that obtains in the same period adds is identical, video receiver adopts with video sending end and adds the extracting mode that watermark is complementary, by extracting corresponding watermark code in each two field picture, each two field picture that will have the same watermark sign indicating number is exported synchronously.Compared with prior art, because in the video transmission process, the watermark in the image can not lost, so when video is exported, can be according to the multi-channel video that obtains simultaneously being exported synchronously by the watermark code of extracting in the image; In addition, before video output, video receiver carries out elimination of hidden with the watermark overlay area in the image, thereby can guarantee that the image frame integral body of exporting is consistent, and avoids the influence of watermark to the entire image picture effect.
Embodiment eight
Present embodiment provides a kind of multi-channel video synchronous transmission system, and as shown in Figure 8, described system comprises video sending end 81 and video receiver 82, wherein,
Described video sending end 81 is used to obtain multi-channel video, wherein, each road video comprises multiple image respectively, for each two field picture adds watermark, wherein, the watermark that multiple image added in the multi-channel video that obtains in the same period is identical, and the image that adds watermark is sent to video receiver 82;
Described video receiver 82, the image that is used for the interpolation watermark of receiver, video transmitting terminal 81 transmissions, adopt with video sending end 81 and add the extracting mode that watermark is complementary, extract corresponding watermark code from each two field picture, the image that will have the same watermark sign indicating number is exported simultaneously.
Wherein, described system also comprises:
Embodiment of the invention multi-channel video synchronous transmission system, video sending end is that each two field picture that obtains adds watermark, the watermark code of obtaining in the same period that each two field picture added is identical, video receiver adopts with video sending end and adds the extracting mode that watermark is complementary, by extracting corresponding watermark code in each two field picture, each two field picture that will have the same watermark sign indicating number is exported synchronously.Compared with prior art, watermarked in the present invention's each two field picture in the multi-channel video that gets access to, because in the video transmission process, the watermark in the image can not lost, so when video is exported, can be according to the multi-channel video that obtains simultaneously being exported synchronously by the watermark code of extracting in the image.
The above-mentioned method embodiment that provides can be provided for multi-channel video synchronous transmission device that the embodiment of the invention provides and system.Multi-channel video synchronization transfer method, the Apparatus and system that the embodiment of the invention provides goes for the synchronous transmission of multi-channel video in the video conference, but is not limited only to this.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (17)
1. a multi-channel video synchronization transfer method is characterized in that, comprising:
Obtain multi-channel video, wherein, each road video comprises multiple image respectively;
For each two field picture adds watermark, wherein, the watermark that multiple image added in the multi-channel video that obtains in the same period is identical;
The image that adds watermark is sent to video receiver.
2. method according to claim 1 is characterized in that, describedly comprises for each two field picture adds watermark:
According to the acquisition time of image, obtain the watermark code of described image correspondence, wherein, described watermark code is a bit sequence;
According to the value of each bit in the described bit sequence, Fill Color in described image, wherein, the corresponding a kind of color of the value of each bit.
3. method according to claim 2 is characterized in that, described acquisition time according to image, and the watermark code of obtaining described image correspondence comprises:
Generate the watermark code corresponding by default algorithm with the acquisition time of described image;
Perhaps
In default watermark code table, search the watermark code corresponding with the acquisition time of described image, wherein, in described watermark code table, the corresponding watermark code of the acquisition time of each image.
4. method according to claim 3 is characterized in that, described value according to each bit in the described bit sequence, and Fill Color comprises in described image:
Be defined as the specific region that described image adds watermark;
Described specific region is divided into a plurality of zonules;
According to the value of each bit in the described watermark code, Fill Color in each bit corresponding district territory, wherein, the color of filling in the corresponding zonule of each bit, the value of bit and zonule is corresponding.
5. a multi-channel video synchronization transfer method is characterized in that, comprising:
Receive the image that adds watermark;
Adopt with video sending end and add the extracting mode that watermark is complementary, from each two field picture, extract corresponding watermark code;
Each two field picture that will have the same watermark sign indicating number is exported simultaneously.
6. method according to claim 5 is characterized in that, described employing and video sending end are added the extracting mode that watermark is complementary, and extracts corresponding watermark code and comprise from each two field picture:
Determine that video sending end is the specific region that image adds watermark;
Determine a plurality of zonules that video sending end is divided described specific region;
Color according to image in each zonule, obtain with each zonule in the value of the corresponding bit of color of image, the value of each bit is formed a bit sequence, wherein, the corresponding bit in each zonule, the color of filling in the zonule is corresponding with the value of bit.
7. according to claim 5 or 6 described methods, it is characterized in that before the described image that will have the same watermark sign indicating number was exported simultaneously, described method also comprised:
The watermark elimination of hidden is carried out in watermark overlay area in the image.
8. method according to claim 7 is characterized in that, describedly the watermark elimination of hidden is carried out in watermark overlay area in the image comprises:
The average pixel value of each pixel in the computed image beyond the watermark overlay area;
The color of described average pixel value correspondence is filled into described watermark overlay area.
9. a multi-channel video synchronous transmission device is characterized in that, comprising:
Video acquiring module is used to obtain multi-channel video, and wherein, each road video comprises multiple image respectively;
Add module, be used to each two field picture to add watermark, wherein, the watermark that multiple image added in the multi-channel video that obtains in the same period is identical;
Sending module, the image that is used for adding watermark sends to video receiver.
10. device according to claim 9 is characterized in that, described interpolation module comprises:
Acquiring unit is used for the acquisition time according to image, obtains the watermark code of described image correspondence, and wherein, described watermark code is a bit sequence;
Filler cells is used for the value according to described each bit of bit sequence, Fill Color in described image, wherein, the corresponding a kind of color of the value of each bit.
11. device according to claim 10 is characterized in that, described acquiring unit comprises at least and generates subelement and search in the subelement one, wherein,
Described generation subelement is used for generating the watermark code corresponding with the acquisition time of described image by default algorithm;
The described subelement of searching is used for searching the watermark code corresponding with the acquisition time of described image by default watermark code table, wherein, in described watermark code table, the corresponding watermark code of the acquisition time of each image.
12. device according to claim 11 is characterized in that, described filler cells comprises:
Determine subelement, be used to be defined as the specific region that described image adds watermark;
Divide subelement, be used for described specific region is divided into a plurality of zonules;
Fill subelement, be used for value according to described each bit of watermark code, Fill Color in each bit corresponding district territory, wherein, the color of filling in the corresponding zonule of each bit, the value of bit and zonule is corresponding.
13. a multi-channel video synchronous transmission device is characterized in that, comprising:
Receiver module is used to receive the image that adds watermark;
Extraction module is used to adopt with video sending end and adds the extracting mode that watermark is complementary, and extracts corresponding watermark code from each two field picture;
Output module is used for each two field picture with same watermark sign indicating number is exported simultaneously.
14. device according to claim 13 is characterized in that, described extraction module comprises:
First determining unit determines that video sending end is the specific region that image adds watermark;
Second determining unit is used for a plurality of zonules of determining that video sending end is divided described specific region;
Extraction unit, be used for color according to each zonule image, obtain with each zonule in the value of the corresponding bit of color of image, the value of each bit is formed a bit sequence, wherein, the corresponding bit in each zonule, the color of filling in the zonule is corresponding with the value of bit.
15., it is characterized in that described device also comprises according to claim 13 or 14 described devices:
Processing module is used for the watermark elimination of hidden is carried out in the watermark overlay area of image.
16. device according to claim 15 is characterized in that, described processing module comprises:
Computing unit is used for the average pixel value of each pixel beyond the computed image watermark overlay area;
Filler cells is used for the color of described average pixel value correspondence is filled into described watermark overlay area.
17. a multi-channel video synchronous transmission system is characterized in that, comprises video sending end and video receiver, wherein,
Described video sending end is used to obtain multi-channel video, wherein, each road video comprises multiple image respectively, for each two field picture adds watermark, wherein, the watermark that multiple image added in the multi-channel video that obtains in the same period is identical, and the image that adds watermark is sent to video receiver;
Described video receiver, the image that is used for the interpolation watermark of receiver, video transmitting terminal transmission, adopt with video sending end and add the extracting mode that watermark is complementary, extract corresponding watermark code from each two field picture, each two field picture that will have the same watermark sign indicating number is exported simultaneously.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101598423A CN102238421A (en) | 2010-04-29 | 2010-04-29 | Multi-path video synchronous transmission method, device and system |
| PCT/CN2011/073226 WO2011134373A1 (en) | 2010-04-29 | 2011-04-23 | Method, device and system for synchronous transmmision of multi-channel videos |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101598423A CN102238421A (en) | 2010-04-29 | 2010-04-29 | Multi-path video synchronous transmission method, device and system |
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| CN2010101598423A Pending CN102238421A (en) | 2010-04-29 | 2010-04-29 | Multi-path video synchronous transmission method, device and system |
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| WO (1) | WO2011134373A1 (en) |
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Also Published As
| Publication number | Publication date |
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| WO2011134373A9 (en) | 2011-12-29 |
| WO2011134373A1 (en) | 2011-11-03 |
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