CN102932656A - Video data transmission method and device - Google Patents
Video data transmission method and device Download PDFInfo
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- CN102932656A CN102932656A CN2011102256521A CN201110225652A CN102932656A CN 102932656 A CN102932656 A CN 102932656A CN 2011102256521 A CN2011102256521 A CN 2011102256521A CN 201110225652 A CN201110225652 A CN 201110225652A CN 102932656 A CN102932656 A CN 102932656A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/186—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
Abstract
The invention discloses a video data transmission method and device. The video data transmission method comprises the following steps of: adjusting color parameters of video data to ensure that the capacity of the adjusted video data is smaller than that of the video data before being adjusted; and transmitting the adjusted video data. The video data transmission method and device disclosed by the invention have the advantages of enabling the video data displayed for a user to be relatively complete and promoting the user experience.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method of transmitting video data and device.
Background technology
It is a kind of multimedia communication service that integrates image, voice that video data transmits the business relate to (following describe as an example of visual telephone service example), both call sides can be seen mutually the other side's scene in communication process, realize the aspectant real-time communication of people.
Video telephone comes across PSTN (Public Switched Telephone Network, referred to as PSTN) network and integrated services digital network (Integrated Services Digital, referred to as ISDN) network, and worked out corresponding standard ITU Telecommunication Standardization Sector (International Telecommunications Union-Telecommunications standardization sector is referred to as ITU-T) H.324.The protocol stack of the third generation (3rdGeneration is referred to as 3G) video telephone mainly is the 3G-324M protocol architecture, 3G-324M is third generation partner program (3rd Generation Partnership Project, referred to as 3GPP) the framework standard organized to set up, its formulate basis be ITU-T H.324M, H.324M be the movable part expansion of H.324 standard.
This shows, the video calling technology is widely used in fixed network and mobile network.Because the video calling technology is based on network, therefore, in the reasonable situation of network state user's experience better, when network state is bad, will go wrong.
For example, a little less than the network signal at video calling both sides place, perhaps because both sides' camera object of catching such as moves at the reason, can cause sound and the image processing effect conversed poor.For the bad situation of network state, in the prior art, proposed several processing methods and processed this situation.In a kind of method therein, close video data transmitting, only send voice data, do not send video data, can accomplish to save bandwidth, but this mode causes video data to be lost fully, if the network state long period can not get recovering, the user can't understand the actual conditions to end subscriber in real time, and video calling is equal to voice call, lose due effect.In another approach, the intercepting parts of images carries out Internet Transmission, with the situation of alleviating network congestion.But this mode can affect the user to the understanding of comprehensive integral body of opposite end situation, and the limitation of cut-away view picture more can affect the effect that presents of opposite end image.
Summary of the invention
Main purpose of the present invention is to provide a kind of method of transmitting video data and device, to address the above problem at least.
According to an aspect of the present invention, provide a kind of method of transmitting video data, comprised the steps: to adjust the color parameter of video data, made the capacity of the described video data after the adjustment less than the capacity of the described video data before adjusting; Described video data after transmission is adjusted.
Preferably, before the color parameter of adjusting described video data, described method also comprises: according to the network state of the described video data of transmission, determine and need to adjust the color parameter of described video data.
Preferably, determine that according to described network state needs comprise the color parameter adjustment of described video data: when the available bandwidth that is higher than error rate threshold value and/or transmits the network of described video data in the error rate of video data is lower than bandwidth threshold, determines and to adjust the color parameter of described video data.
Preferably, described color parameter comprise following one of at least: the quantity of contrast, form and aspect, color range, tone, lightness, brightness, color kind.
Preferably, the color parameter of adjusting described video data comprises: described video data is adjusted into black and white.
Preferably, described method also comprises: the recipient to described video data sends message, and wherein, described message is used to indicate described recipient the color parameter of the video data of this recipient's transmission is adjusted.
According to another aspect of the present invention, also provide a kind of video data transmitting device, having comprised: adjusting module, be used for to adjust the color parameter of video data, make the capacity of the described video data after the adjustment less than the capacity of the described video data before adjusting; Transport module is used for the described video data after transmission is adjusted.
Preferably, described device also comprises: determination module, be used for the network state according to the described video data of transmission, and determine and need to adjust the color parameter of described video data.
Preferably, described determination module when being used for available bandwidth that the error rate at video data is higher than error rate threshold value and/or transmits the network of described video data and being lower than bandwidth threshold, is determined and need to be adjusted the color parameter of described video data.
Preferably, described device also comprises: sending module, be used for sending message to the recipient of described video data, and wherein, described message is used to indicate described recipient the color parameter of the video data of this recipient's transmission is adjusted.
By the present invention, adopt to adjust the color parameter of video data, make the capacity of the described video data after the adjustment less than the capacity of the described video data before adjusting; Described video data after transmission is adjusted.Solved do not send in the prior art video data or only the transmitting portion video data deal with the problem that the user experiences that affects that the bad processing mode of network state causes, make the video data that is shown to the user relatively complete, promoted user's experience.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the method for transmitting video data of the embodiment of the invention;
Fig. 2 is the structured flowchart according to the video data transmitting device of the embodiment of the invention;
Fig. 3 is the preferred structure block diagram according to the video data transmitting device of the embodiment of the invention;
Fig. 4 is another preferred structure block diagram according to the video data transmitting device of the embodiment of the invention;
Fig. 5 is the flow chart of control audio and video data streams in the video telephone according to the preferred embodiment of the invention;
Fig. 6 is the system construction drawing according to the video telephone of the embodiment of the invention.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove, in the situation that do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.
In the present embodiment, provide a kind of method of transmitting video data, Fig. 1 is the flow chart according to the method for transmitting video data of the embodiment of the invention, and as shown in Figure 1, this flow process comprises the steps:
Step S102 adjusts the color parameter of video data, makes the capacity of the video data after the adjustment less than the capacity of the video data before adjusting;
Step S104, the video data after transmission is adjusted.
Pass through above-mentioned steps, can be by adjusting the color parameter of the image in the video data, the capacity of video data is diminished, transmitting portion video data or do not send the processing mode of video data in the prior art, although some distortion of the color of the video that the user sees, but but can show relative complete video data to the user, thereby improve user's experience.Actual color parameter may have a variety of, for example, the quantity of contrast, form and aspect, color range, tone, lightness, brightness, color kind etc., as long as no matter adjust which or which parameter can reach the purpose that reduces the video data capacity and just all can solve the problems of the prior art, obtain above-mentioned technique effect.
Mode for the color parameter of adjusting video data, can on terminal, (for example provide a function key to the user, it can be the button that in software, provides, also can be a real physical button), the user can select whether to start the adjustment function of color parameter according to the actual needs.A kind of more excellent execution mode is provided in the present embodiment, in this preferred implementation, can automatically start the adjustment of color parameter, and do not need user's participation, in this preferred implementation, can according to the network state of transmitting video data, determine whether and to adjust the color parameter of video data.For a variety of modes of defining of network state, can judge according to the error rate quality of network state, also can judge according to the actual available bandwidth in the network quality of network state.For example, when the available bandwidth that is higher than the network of error rate threshold value and/or transmitting video data in the error rate of video data is lower than bandwidth threshold, determines and to adjust the color parameter of video data.
Can adjust according to the actual needs different color parameter, for example, can offer the interface that color parameter of user is adjusted, allow user's manual setting color parameter, and the user is manual when adjusting, estimated value that can the real-time prompting volume change.Certainly, if wish and can automatically adjust, can preset needs to adjust parameter, then automatically starts to adjust to get final product.As a fairly simple execution mode, can directly video data be adjusted into black and white, although such video effect is not best, but the requirement for network is minimum, certainly, also can be the video data that is adjusted into 8 kinds of colors, the different various video datas of the color category quantity such as video data of 16 kinds of colors.
For being adjusted to black and white, the grey scale pixel value that the grey scale pixel value in can image drops on the pixel in the preset range is set to 255, and the grey scale pixel value of rest of pixels is set to 0, and wherein, image is the image in the video data.Adjustment mode for other also can be adjusted with reference to the mode of adjusting black and white, for example, for the video data that is adjusted to 8 kinds of colors, 8 scopes can be set, and just is adjusted into this color for the pixel that drops in certain scope.
Because the transmission of video data might be two-way, the capacity of only adjusting a side video data can play certain effect, in order to make better effects if, can send message to the recipient of video data, wherein, this message is used to indicate the color parameter of the video data that the recipient sends this recipient and adjusts, and makes the capacity of the video data after the adjustment less than the capacity of the video data before adjusting.So just can be all smaller at the video data capacity that both direction sends.
A kind of video data transmitting device also is provided in the present embodiment, Fig. 2 is the structured flowchart according to the video data transmitting device of the embodiment of the invention, this device is used for realizing above-described embodiment and preferred implementation, carried out not repeating them here of explanation, the below describes relating to module in this device, this device is used for realizing above-described embodiment and preferred implementation, had carried out repeating no more of explanation.As used below, the combination of software and/or the hardware of predetermined function can be realized in term " module ".Although the described device of following examples is preferably realized with software, hardware, perhaps the realization of the combination of software and hardware also may and be conceived.As shown in Figure 2, this device comprises: adjusting module 20, transport module 22, the below is described in detail this structure.
Adjusting module 20 be used for to be adjusted the color parameter of video data, makes the capacity of the video data after the adjustment less than the capacity of the video data before adjusting; Transport module 22 is connected to adjusting module 20, is used for the video data after transmission is adjusted.
Fig. 3 is the preferred structure block diagram according to the video data transmitting device of the embodiment of the invention, as shown in Figure 3, this device also comprises: determination module 30, be connected to adjusting module 20, the network state that determination module 30 is used for according to transmitting video data is determined and need to be adjusted the color parameter of video data.
Preferably, determination module 30 when being used for available bandwidth that the error rate at video data is higher than the network of error rate threshold value and/or transmitting video data and being lower than bandwidth threshold, is determined and need to be adjusted the color parameter of video data.
Preferably, adjusting module 20 is used for video data is adjusted into black and white.
Fig. 4 is another preferred structure block diagram according to the video data transmitting device of the embodiment of the invention, as shown in Figure 4, this device also comprises: sending module 40, this module is used for sending message to the recipient of video data, wherein, the message color parameter that is used to indicate the video data that the recipient sends this recipient is adjusted.
The below describes in conjunction with the preferred embodiments as an example of video telephony example, describes as example video data directly is converted to black and white in this preferred embodiment.
This preferred embodiment relates to video telephony, and method, system and the equipment of control video data stream in the video calling is provided.
In the method, the error rate threshold value of the audio/video frames of terminal A (for example, can be among the terminal A the module that arranges) configuration video call process transmission.Terminal A and terminal B set up the video call link, the transmission tone video data stream.Terminal A judges that the audio and video data streams error rate surpasses threshold value, and terminal A converts color video to black and white and sends to terminal B, and the video file after the conversion is less, effectively promotes efficiency of transmission.
Preferably, terminal A (is for example judging the error rate, it can be the error rate of audio stream, also can be the error rate of video flowing, perhaps both combinations) when surpassing threshold range, except the video data of conversion local terminal sampling, can also send signaling to terminal B, inform that terminal B carries out identical adjustment, guarantee that terminal A receives that the video file capacity of terminal B transmission diminishes, image effect is better.If the terminal A judgement audio/video flow error rate is lower than this threshold value, then terminal A sends the source video flowing of camera sampling to terminal B, carries out video call.
At this preferred embodiment, a kind of system of visual telephone control audio and video data streams also is provided, this system comprises with lower module:
Module is set, is used for the error rate threshold value of the audio/video frames of configuration video call process transmission;
Detection module (preferred implementation that is equivalent to determination module 30) is for the error rate of calculating the audio transmission frame;
Control module is used for comparing judgement between the actual error rate of audio video transmission frame and the configuration error rate threshold value, if judge and exceed threshold range, then starts the video color conversion, calls modular converter.Modular converter is used for color video is converted into the black and white video coding.Wherein, control module and modular converter are equivalent to the preferred implementation of adjusting module 20.
A kind of device end also is provided in this preferred embodiment, and this terminal comprises above-mentioned processing system for video.
Fig. 5 is the flow chart of control audio and video data streams in the video telephone according to the preferred embodiment of the invention, and as shown in Figure 5, this flow process may further comprise the steps:
Step S502, terminal A arrange the error rate threshold value of audio-video code stream transmission.
Step S504, terminal A calling terminal B, and set up the video call link with it.
Step S506 carries out audio frequency and video and transmits between terminal A and the terminal called.
Step S508 judges whether video call is hung up, if hang up, then finishes video call.If do not hang up, enter step S510.
Step S510, terminal A receive the video file that terminal B transmits, and calculate or detect the error rate, and judge that whether it surpasses threshold value, if do not exceed threshold value, enters step S506, proceed the audio-video document transmission between terminal A and the terminal B, consistent with common process of video call.If exceed threshold value, then enter step S512.
Here obtain the method for the error rate, can calculate by certain algorithm, as can be with the frame per second in the unit interval as the foundation of calculating the error rate.Also can be by terminal use's manual detection, and increase the man-machine interaction menu, be convenient to user's control.
Step S512, terminal A judge that the error rate of the audio-video code stream of receiving surpasses threshold value, then by algorithm color video are converted into black and white, dwindle file size.Transfer algorithm includes but not limited to following methods:
Nonzero element is got a method, is 0 for certain grey scale pixel value in the image namely, and then its gray value is constant, still is 0; Be not 0 pixel for gray value, its pixel value all is set to 255.Nonzero element is got the threshold value T=1 of a method.
The fixed threshold method generates a threshold value T by user's appointment or by certain algorithm, if the gray value of certain pixel is less than this threshold value in the image, then the gray value of this pixel is set to 0 or 255, otherwise gray value is set to 255 or 0.
In addition, also can adopt two fixed threshold methods, namely set two threshold value T1 and T2, T1＜T2.When image is processed, if the gray value of certain pixel is less than T1 then be set to 0 (perhaps 255); If during greater than T1 and less than T2, then be set to 255 (perhaps setting to 0); If greater than T2, then set to 0 (or 255).Can select as the case may be two fixed threshold methods is to adopt 0-255-0 type or 255-0-255 type.
Step S514, the black and white video file that terminal A will transform sends terminal B to, so that the flow on the link reduces, effectively alleviates the error rate of single frames file.
Step S516, terminal A sends control signaling (for example, can carry out simultaneously with step S514, also can carry out in needs again) to terminal B, and notification terminal B carries out the black and white conversion.Control signal can by H.245 protocol signaling realization, satisfy H.245 signaling specification.
Step S518, terminal B receives control signal, image or the video sampled in this locality carry out the black and white conversion, send to terminal A, realize the file transfer between terminal A and the terminal B.
Fig. 6 is the system construction drawing according to the video telephone of the embodiment of the invention, and this system comprises: module 110, detection module 120, control module 130, modular converter 140 are set, and these modular units can pass through software, hardware or software and hardware combining to be realized.This system is not only applicable to portable terminal, is applicable to the cable network terminal yet.
Module 110 is set links to each other with control module 130, be used for setting the threshold value of video code flow conversion.Threshold range can be fixed value between 0-255, also can by the error rate situation of audio-video code stream, adjust optimization according to certain algorithm.Detection module 120 links to each other with control module 130, is used for obtaining the error rate of audio video transmission frame.The method of obtaining can be to calculate by certain algorithm, also can pass through terminal use's manual detection, and increases interactive menu, is used for starting modular converter 140.Control module 130, with detection module 120 with module 110 be set link to each other, be used for the error rate and the threshold value that relatively detect.Modular converter 140 links to each other with control module 130, is used for color video is converted to black and white.
This preferred embodiment converts black and white to by the video file with colour, make the video file volume lowering that transmits on the link, effectively improve the transmission quality of link, reduce the error rate of terminal receiver, video frame, be shown to the user video imaging more complete, promoted user's experience.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, carried out by calculation element thereby they can be stored in the storage device, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and 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 modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method of transmitting video data is characterized in that comprising the steps:
Adjust the color parameter of video data, make the capacity of the described video data after the adjustment less than the capacity of the described video data before adjusting;
Described video data after transmission is adjusted.
2. method according to claim 1 is characterized in that, before the color parameter of adjusting described video data, also comprises:
According to the network state of the described video data of transmission, determine and to adjust the color parameter of described video data.
3. method according to claim 2 is characterized in that, determines that according to described network state needs comprise the color parameter adjustment of described video data:
When the available bandwidth that is higher than error rate threshold value and/or transmits the network of described video data in the error rate of video data is lower than bandwidth threshold, determines and to adjust the color parameter of described video data.
4. method according to claim 1 is characterized in that, described color parameter comprise following one of at least: the quantity of contrast, form and aspect, color range, tone, lightness, brightness, color kind.
5. each described method in 4 according to claim 1 is characterized in that, the color parameter of adjusting described video data comprises:
Described video data is adjusted into black and white.
6. each described method in 4 according to claim 1 is characterized in that, also comprises:
Recipient to described video data sends message, and wherein, described message is used to indicate described recipient the color parameter of the video data of this recipient's transmission is adjusted.
7. video data transmitting device is characterized in that comprising:
Adjusting module be used for to be adjusted the color parameter of video data, makes the capacity of the described video data after the adjustment less than the capacity of the described video data before adjusting;
Transport module is used for the described video data after transmission is adjusted.
8. device according to claim 7 is characterized in that, described device also comprises:
Determination module is used for the network state according to the described video data of transmission, determines and need to adjust the color parameter of described video data.
9. device according to claim 8 is characterized in that,
Described determination module when being used for available bandwidth that the error rate at video data is higher than error rate threshold value and/or transmits the network of described video data and being lower than bandwidth threshold, is determined and need to be adjusted the color parameter of described video data.
10. each described device in 9 according to claim 7 is characterized in that, described device also comprises:
Sending module is used for sending message to the recipient of described video data, and wherein, described message is used to indicate described recipient the color parameter of the video data of this recipient's transmission is adjusted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102256521A CN102932656A (en) | 2011-08-08 | 2011-08-08 | Video data transmission method and device |
| PCT/CN2011/081133 WO2012151854A1 (en) | 2011-08-08 | 2011-10-21 | Video data transmission method and device |
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| CN2011102256521A CN102932656A (en) | 2011-08-08 | 2011-08-08 | Video data transmission method and device |
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| WO (1) | WO2012151854A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104219481A (en) * | 2014-09-09 | 2014-12-17 | 联想(北京)有限公司 | Information processing method and electronic device |
| CN112468855A (en) * | 2020-11-11 | 2021-03-09 | 西安万像电子科技有限公司 | Data transmission method and device and nonvolatile storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105471850A (en) * | 2015-11-17 | 2016-04-06 | 浙江宇视科技有限公司 | Video uploading method and video uploading device |
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| CN1332575A (en) * | 2000-07-10 | 2002-01-23 | 刘伟 | Dynamic digital image transmitting method and device |
| CN1599453A (en) * | 2003-09-17 | 2005-03-23 | 联想(北京)有限公司 | Method for dynamic regulating video transmission |
| US20080002777A1 (en) * | 2006-06-20 | 2008-01-03 | Hwang Gyung H | Video data communication method and apparatus for improving transmission efficiency |
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| CN101867767B (en) * | 2010-04-30 | 2013-08-07 | 中兴通讯股份有限公司 | Multi-point control unit of video conference system and video processing method thereof |
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- 2011-08-08 CN CN2011102256521A patent/CN102932656A/en active Pending
- 2011-10-21 WO PCT/CN2011/081133 patent/WO2012151854A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332575A (en) * | 2000-07-10 | 2002-01-23 | 刘伟 | Dynamic digital image transmitting method and device |
| CN1599453A (en) * | 2003-09-17 | 2005-03-23 | 联想(北京)有限公司 | Method for dynamic regulating video transmission |
| US20080002777A1 (en) * | 2006-06-20 | 2008-01-03 | Hwang Gyung H | Video data communication method and apparatus for improving transmission efficiency |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104219481A (en) * | 2014-09-09 | 2014-12-17 | 联想(北京)有限公司 | Information processing method and electronic device |
| CN112468855A (en) * | 2020-11-11 | 2021-03-09 | 西安万像电子科技有限公司 | Data transmission method and device and nonvolatile storage medium |
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Application publication date: 20130213 |