WO2012171459A1 - 一种mcu多画面优化配置的方法及装置 - Google Patents

一种mcu多画面优化配置的方法及装置 Download PDF

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Publication number
WO2012171459A1
WO2012171459A1 PCT/CN2012/076842 CN2012076842W WO2012171459A1 WO 2012171459 A1 WO2012171459 A1 WO 2012171459A1 CN 2012076842 W CN2012076842 W CN 2012076842W WO 2012171459 A1 WO2012171459 A1 WO 2012171459A1
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WO
WIPO (PCT)
Prior art keywords
display screen
screen
mcu
presented
picture
Prior art date
Application number
PCT/CN2012/076842
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English (en)
French (fr)
Inventor
张峰
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to AU2012269508A priority Critical patent/AU2012269508B2/en
Priority to CA2823559A priority patent/CA2823559C/en
Priority to EP20120800747 priority patent/EP2677744A4/en
Publication of WO2012171459A1 publication Critical patent/WO2012171459A1/zh
Priority to US13/975,862 priority patent/US8736656B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/14Systems for two-way working
    • H04N7/15Conference systems
    • H04N7/152Multipoint control units therefor
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment
    • H04N5/262Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/2624Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects for obtaining an image which is composed of whole input images, e.g. splitscreen

Definitions

  • the present invention relates to the field of communication network technologies, and in particular, to a method and an apparatus for optimal configuration of an MCU multi-picture.
  • the current video conference supports multi-screen conferences, and the situation of each conference terminal participating in the conference can be truly presented on the television output by the conference terminal.
  • the multi-picture mode presented at each conference terminal after the conference is pre-set.
  • the MCU Mul t ipoint Control Uni t
  • the MCU will receive the images of the conference terminals. Decoding and filtering, and then selecting the most suitable multi-picture mode according to the number of conference terminals. For example, the preset multi-picture mode includes 2 pictures, 4 pictures, etc. When there are 3 conference terminals joining, the system selects 4 pictures. After the mode is displayed and the format of the image is scaled according to the size of the sub-picture, the corresponding sub-picture is filled in, and finally the multi-picture image adjusted by the MCU is encoded and sent to each conference terminal participating in the conference.
  • Embodiments of the present invention provide a method and apparatus for MCU multi-picture optimization configuration, which can eliminate the phenomenon of a black screen of a sub-picture.
  • a method for multi-screen optimization configuration of an MCU comprising:
  • the area N is a natural number greater than or equal to 1;
  • a device for multi-screen optimization configuration of an MCU comprising:
  • a calculating unit configured to calculate, according to a resolution, a bandwidth, a frame rate, an importance degree, and a volume level of the video image sent by the N conference terminals, an area in the screen presented by the MCU display screen, a natural number greater than or equal to 2;
  • a filling unit configured to divide a picture presented by the MCU display screen into N areas according to an area in a picture that is displayed by the MCU display screen, and send the video sent by the N conference terminals The image is filled in a corresponding area of the picture presented by the MCU display screen.
  • An embodiment of the present invention provides a method and apparatus for multi-screen optimization configuration of an MCU, which calculates an area in a picture displayed by an MCU display screen by calculating video images sent by N conference terminals, and occupies the MCU according to the respective video images.
  • the area in the screen presented by the display screen divides the picture presented by the MCU display screen into N areas, and fills the video images sent by the N conference terminals in corresponding areas of the picture presented by the MCU display screen .
  • FIG. 1 is a flowchart of a method for multi-screen optimization configuration of an MCU according to Embodiment 1 of the present invention
  • FIG. 2 is a block diagram of an apparatus for optimizing multi-screen configuration of an MCU according to Embodiment 1 of the present invention
  • 3 is a flowchart of a method for optimizing multi-screen configuration of an MCU according to Embodiment 2 of the present invention
  • FIG. 4 is a flowchart of a method for filling a multi-screen according to Embodiment 2 of the present invention
  • FIG. 6 is a block diagram of an apparatus for multi-screen optimization configuration of an MCU according to Embodiment 2 of the present invention
  • FIG. 7 is a determining module according to Embodiment 2 of the present invention
  • Block diagram of the device Block diagram of the device;
  • FIG. 8 is a block diagram of an apparatus for filling a module according to Embodiment 2 of the present invention. detailed description
  • a method for optimal configuration of an MCU multi-screen according to an embodiment of the present invention includes:
  • Step 101 Calculate, according to a resolution, a bandwidth, a frame rate, an importance degree, and a volume level of the video image sent by the N conference terminals, an area of the video image that is displayed on the screen displayed by the MCU, where N is greater than Or a natural number equal to 2;
  • the conference terminal of the transmitted video image may be a camera of the conference terminal or software having a transmission function of the conference terminal.
  • Step 102 According to the area of the video image that is occupied by the MCU display screen, divide the screen presented by the MCU display screen into N areas, and fill the video images sent by the N conference terminals. In the corresponding area of the picture presented by the MCU display screen.
  • the picture after the video image is filled in the corresponding area of the picture presented by the MCU display screen is a multi-picture. Dynamically splitting according to the number of conference terminals participating in the conference The MCU displays the screen presented on the screen, which eliminates the phenomenon of black screen.
  • An embodiment of the MCU multi-screen optimization configuration provided by the embodiment of the present invention by calculating a video image sent by the N conference terminals to occupy an area in a screen presented by the MCU display screen, and the N The conference terminal is populated in a corresponding area of the picture presented by the MCU display screen.
  • the multi-screen optimization configuration is performed, since the multi-picture mode is preset, the sub-screen black screen may occur.
  • the solution provided by the embodiment of the present invention is dynamically generated.
  • the multi-screen mode can eliminate the phenomenon of black screen of the sub-picture.
  • the embodiment of the present invention provides an apparatus for optimal configuration of an MCU multi-screen.
  • the device may be an MCU or a conference terminal integrated with an MCU multi-screen optimization configuration processing unit. As shown in FIG. 1, the device includes: 201, filling unit 202.
  • the calculating unit 201 is configured to calculate, according to the resolution, the bandwidth, the frame rate, the importance level, and the volume of the video image sent by the N conference terminals, the area of each video image in the screen presented by the MCU display screen, N is a natural number greater than or equal to 2;
  • the filling unit 202 is configured to divide the screen presented by the MCU display screen into N regions according to an area in the screen that is displayed by the MCU display screen, and send the N conference terminals.
  • the video image is filled in a corresponding area of the picture presented by the MCU display screen.
  • An apparatus for optimizing multi-screen configuration of an MCU calculates, by a computing unit, a video image sent by N conference terminals to occupy an area in a screen presented by an MCU display screen, filling a unit, and filling the N conference terminals In the corresponding area of the picture presented by the MCU display screen.
  • the multi-screen optimization configuration is performed, since the multi-picture mode is preset, the sub-screen black screen may occur.
  • the solution provided by the embodiment of the present invention is dynamically generated.
  • the multi-screen mode can eliminate the phenomenon of black screen of the sub-picture.
  • An embodiment of the present invention provides a method for optimal configuration of an MCU multi-screen. As shown in FIG. 3, the method includes:
  • Step 301 Receive video images sent by the N conference terminals, obtain resolution, bandwidth, frame rate, importance, and volume of the video images, where N is a natural number greater than or equal to 2; and receive N conference terminals to send The video code stream, where the conference terminal that transmits the video image may be a camera of the conference terminal or a software having a transmission function of the conference terminal. Then the MCU says The video code stream is decoded, the video image is obtained, and the resolution, bandwidth, frame rate, importance level, and volume level of the respective video images are acquired by the MCU.
  • Step 302 Acquire, according to resolution, bandwidth, frame rate, importance level, and volume of each video image, an area of each video image occupying a screen presented by the MCU display screen;
  • the picture displayed by the MCU display screen is a complete picture.
  • the video image sent by one conference terminal is filled into the picture presented by the MCU display screen according to the method provided by the embodiment of the present invention, Multiple screens consisting of one or more sub-pictures.
  • each video image occupies an area in a picture presented by the MCU display screen
  • S indicates that the video image sent by the first conference terminal occupies an area in the screen presented by the MCU display screen, and indicates the resolution of the video image sent by the first conference terminal
  • B indicates that the first conference terminal sends The bandwidth of the video image, indicating the frame rate of the video image transmitted by the first conference terminal, indicating the importance of the video image transmitted by the first conference terminal, and 1 ⁇ 4 indicating the volume of the video image transmitted by the first conference terminal.
  • L 2 , L 3 , L 4 , and L 5 are determined by the person participating in the conference according to the actual situation, and are carried in the video image and sent to the MCU.
  • Step 303 Determine, according to the video image sent by the N conference terminals and the screen presented by the MCU display screen, a segmentation direction of a screen presented by the MCU display screen;
  • the dividing direction of the screen presented by the MCU display screen is specifically: dividing in a horizontal direction of the screen presented by the MCU display screen and a vertical direction of the screen presented by the MCU display screen. Cut two ways.
  • each video image calculated according to step 302 Determining an area in a picture presented by the MCU display screen, and determining that the transmitted video image occupies the largest conference area in the screen presented by the MCU display screen as the first conference terminal;
  • the determining, in the dividing direction of the screen presented by the MCU display screen is
  • the resolution of the picture presented by the MCU display screen is Ax E
  • the resolution of the video image sent by the first conference terminal is Cx D
  • the first ratio of the A/C is calculated, and the second ratio of the E/D is calculated, wherein the resolution of the picture is Ax E, and the resolution of the video image sent by the first conference terminal is Cx D;
  • the first ratio is greater than the second ratio, it is determined that the dividing direction of the screen presented by the MCU display screen is divided by the vertical direction of the screen presented by the MCU display screen.
  • Step 304 According to the area of the picture in which the respective video images occupy the MCU display screen, divide the picture presented by the MCU display screen into N areas according to the dividing direction of the picture presented by the MCU display screen, and Filling a video image sent by the N conference terminals in a corresponding area of a screen presented by the MCU display screen;
  • the segmentation refers to a technique in which an algorithm is used to virtually divide a picture presented on a display screen of an MCU, so that two or more sub-pictures are presented in one picture.
  • the present invention may be configured to dynamically divide the image presented by the MCU display screen by using any of the following methods, and the image of the MCU display screen is displayed in the following manner.
  • the video images transmitted by the conference terminals are filled in corresponding areas of the screen presented by the MCU display screen.
  • Method 1 As shown in Figure 4, including: Step 401, respectively calculating a ratio of 8 2 , S 3 ... S, and determining a number M of conference terminals that are less than or equal to a preset value in the ratio, where the M is a natural number;
  • Si is the first image of the video conference terminal sending the picture screen presentation area accounted for in the MCU display video images S 2, S 3 ... S N for transmitting the conference terminal other than the first session terminal 5 ⁇
  • the preset value may be 1.25.
  • the preset value may be 1.25.
  • Step 402 Determine whether the value of the M is equal to (N-1), where N is the number of conference terminals that send video images;
  • Step 403 When the M is not equal to (N-1), according to the dividing direction of the screen presented by the MCU display screen, the video image sent according to the ⁇ and the M conference terminals occupies the MCU Displaying an area in a screen presented by the screen, and dividing the screen presented by the MCU display screen into (M+2) sub-pictures;
  • a conference terminal, a B conference terminal, a C conference terminal, a D conference terminal, and an E conference terminal have five conference terminals, wherein the video image sent by the conference terminal accounts for the largest area of the screen displayed on the MCU display screen. Then, the A conference terminal is the first conference terminal, and after the calculation, it is determined that S A /S B is less than a preset value, then M is 1, and a conference terminal other than the first conference terminal is a B conference terminal.
  • the first conference terminal it is the B conference terminal.
  • the sub-picture cut sub-screen step 404, the video image sent by the first conference terminal and the video image sent by the M conference terminals are filled in corresponding sub-pictures in the picture presented by the MCU display screen. .
  • the video image sent by the first conference terminal is filled in a sub-screen divided for the first conference terminal, and the video image sent by the B conference terminal is padded in the segmentation for the B conference terminal. Subscreen.
  • the MCU multi-screen optimization configuration method of the conference terminals fills in the remaining screens of the MCU display screen presentation, specifically, determines the area of the new screen presented by the unfilled MCU display screen, and determines that the first conference terminal and The video images sent by the other conference terminals other than the M conference terminals occupy an area in a new screen presented by the MCU display screen, and determine that the respective video images occupy the largest area in the new screen presented by the MCU display screen.
  • the conference terminal further calculates a division direction of the new screen presented by the MCU display screen, and divides the new screen according to a division direction of the new screen presented by the MCU display screen, and performs filling.
  • Step 405 When the M is equal to (N-1), according to the segmentation direction of the screen presented by the MCU display screen, the video image is sent according to the Si and the M conference terminals.
  • the MCU displays an area in the screen presented by the screen, and divides the picture presented by the MCU display screen into (M+1) sub-pictures;
  • a conference terminal, a B conference terminal, a C conference terminal, a D conference terminal, and an E conference terminal have five conference terminals, wherein the video image sent by the conference terminal accounts for the largest area of the screen displayed on the MCU display screen. Then, the A conference terminal is the first conference terminal. After the calculation, it is determined that the ratio of S A to S B is less than a preset value, and the ratio of S A to S e is less than a preset value, and the ratio of S A to S D is smaller than the pre-predetermined value.
  • the four external conference terminals are a B conference terminal, a C conference terminal, a D conference terminal, and an E conference terminal, and then the video image transmitted by each conference terminal occupies the division direction of the screen in the screen presented by the MCU display screen.
  • the screen presented by the MCU display screen is divided into (M+1) sub-pictures.
  • Step 406 Fill the video image sent by the first conference terminal and the video image sent by the M conference terminals in corresponding sub-pictures in the picture presented by the MCU display screen.
  • the N conference terminals are correspondingly filled in the screen.
  • the second method includes:
  • Step 501 The video image sent by the N conference terminals is occupied by an area of a picture presented by the MCU display screen, and the picture presented by the MCU display screen is divided equally according to a dividing direction of a picture presented by the MCU display screen. Into N regions;
  • the screen presented by the MCU display screen is averaged according to the division direction of the screen presented by the MCU display screen. Split into 2 sub-pictures.
  • Step 502 Fill the video images sent by the N conference terminals in the N areas. Since the size of the N areas divided by the step 501 is the same, the video image sent by each conference terminal may be any one of the screens presented by the MCU display screen, and the N conference terminals are all filled in the MCU. After displaying the screen presented by the screen, the screen presented on the display screen of the MCU is a multi-screen, and the MCU sends the filled multi-screen to the conference terminals, and the televisions output by the conference terminals are not A black screen will appear.
  • the multi-picture mode is automatically adjusted according to the number of conference terminals, and the number of the video images that need to be displayed in the multi-screen is reduced or increased due to a state change of the conference terminal.
  • the number of sub-pictures in the multi-picture is adjusted, the user is presented with a better and better display effect.
  • the solution provided by the embodiment of the present invention automatically adapts the filling mode of the multi-screen according to the situation of the conference terminal, and the conference terminal situation includes but is not limited to the conference terminal: quantity, resolution Rate, bandwidth, frame rate, importance, volume, etc.
  • the filling mode of the multi-screen may be automatically adapted according to one of the cases of the respective conference terminals.
  • the multi-picture mode can be automatically adapted to the frame rate, and the sub-picture frame with a large video image frame rate transmitted by the conference terminal is large, and the sub-picture frame with a small frame rate is small.
  • the frame rate of the video image sent by the conference terminal is 60 frames per second
  • /l *R ( R>0 ) which is calculated to divide the picture presented by the MCU display screen into W regions, where W is the sum of the denominator and the numerator indicating the score of the ratio, and the R is the adjustment Coefficient
  • the R is 1.
  • the picture is divided into four areas, wherein the video image sent by the A conference terminal occupies three areas, and the video image sent by the B conference terminal occupies one area.
  • the method for optimizing the configuration of the multi-screen of the MCU provided by the embodiment of the present invention can automatically divide the picture presented by the MCU display screen according to the video image sent by each conference terminal, automatically adjust the filling mode of the multi-picture, and perform the MCU with the prior art.
  • the multi-picture optimization configuration since the multi-picture mode is preset, a black screen of the sub-picture may occur, and the sub-picture layout in the multi-picture is fixed, resulting in an unclear picture presented on the television outputted by the conference terminal.
  • the scheme provided by the embodiment of the present invention can eliminate the phenomenon of black screen of the sub-picture and clear the picture presented on the television outputted by the conference terminal by adopting a method of dynamically generating multiple pictures.
  • the embodiment of the present invention provides an apparatus for optimal configuration of an MCU multi-screen.
  • the device may be an MCU or a conference terminal integrated with an MCU multi-screen optimization configuration processing unit. As shown in FIG. 6, the device includes: 601. The filling unit 602, the determining module 603, and the filling module 604.
  • the calculating unit 601 is configured to calculate, according to the resolution, the bandwidth, the frame rate, the importance level, and the volume level of the video images sent by the N conference terminals, the area of the video image in the screen presented by the MCU display screen;
  • the calculating unit 601 first obtains a resolution, a bandwidth, a frame rate, an importance degree, and a volume level of the video images according to the video images sent by the N conference terminals, and then obtains the respective video images according to the obtained video images. Resolution, bandwidth, frame rate, importance and volume, The area of each video image in the picture presented by the MCU display screen is calculated.
  • S I denotes a video image of the conference terminal transmits an area accounting for the MCU display screen of the picture presented, represents the resolution of a video image transmitted from the terminal I conference
  • B represents the I-th conference terminal transmits
  • the bandwidth of the video image indicates the frame rate of the video image transmitted by the first conference terminal, indicating the importance of the video image transmitted by the first conference terminal
  • Vi indicates the volume of the video image transmitted by the first conference terminal.
  • a filling unit 602 configured to divide a screen presented by the MCU display screen into N regions according to an area in a picture that is displayed by the MCU display screen, and send the N conference terminals The video image is filled in a corresponding area of the picture presented by the MCU display screen;
  • the determining module 603 in the filling unit 602 is configured to determine, according to the video image sent by the N conference terminals and the screen presented by the MCU display screen, a segmentation direction of a screen presented by the MCU display screen. ;
  • the determining module 603 includes: a first determining submodule 701, a calculating submodule 702, a determining submodule 703, and a second determining submodule. 704.
  • the first determining sub-module 701 is configured to determine that the transmitted video image occupies the conference terminal having the largest area in the screen presented by the MCU display screen as the first conference terminal;
  • a calculation sub-module 702 configured to calculate a first ratio of the A/C, and calculate a second ratio of the E/D, where the resolution of the picture is AXE, and the resolution of the video image sent by the first conference terminal for Cx D;
  • the determining sub-module 703 determines whether the first ratio is smaller than the second ratio; when the first ratio is smaller than the second ratio, the second determining sub-module 704 determines the
  • the dividing direction of the screen presented by the MCU display screen is divided in the horizontal direction of the screen presented by the MCU display screen;
  • the second determining sub-module 704 is further configured to: determine that a split direction of a screen presented by the MCU display screen is displayed by the MCU Dividing a vertical direction of the presented picture; when the first ratio is equal to the second ratio and A is less than E, the second determining sub-module 704 is further configured to determine a dividing direction of a picture presented by the MCU display screen The second determining sub-module 704 is further configured to determine a screen that is displayed by the MCU display screen, when the first ratio is greater than the second ratio. The dividing direction is divided in the vertical direction of the screen presented by the MCU display screen.
  • a filling module 604 configured to divide, according to the area of the picture presented by the MCU display screen, the image of the MCU display screen according to the dividing direction of the picture presented by the MCU display screen, and The video images sent by the N conference terminals are filled in corresponding areas of the picture presented by the MCU display screen.
  • the filling module 604 includes: a calculation determining sub-module 801, a first dividing sub-module 802, a first filling sub-module 803, a second dividing sub-module 804, and a second filling sub-module 805.
  • the calculation determining module 801 is configured to separately calculate the ratio of 8 1 to S 2 , S 3 ... S, and determine the number of conference terminals in the ratio that are less than or equal to the preset value.
  • M M is a natural number
  • the preset value is determined according to the actual experience of the staff member, for example, the preset value may be 1.25.
  • a first dividing sub-module 802 configured to display, according to the MCU, when the M is not equal to (N-1) Depicting a dividing direction of the screen presented by the screen, and dividing the screen presented by the MCU display screen into an area in the screen that is presented by the MCU display screen in the video image sent by the M meeting terminals (M+2) sub-pictures;
  • a first padding sub-module 803, configured to fill a video image sent by the first conference terminal and a video image sent by the M conference terminals in a corresponding sub-picture in a picture presented by the MCU display screen;
  • the video images transmitted by the remaining [N_(M+1)] conference terminals are performed according to the (M+1).
  • the MCU multi-screen optimization configuration method of the conference terminals fills in the remaining screens presented by the MCU display screen.
  • the first segmentation sub-module 802 is further configured to: according to the segmentation direction of the screen presented by the MCU display screen, according to the location sent by the M conference terminals The area of the video image that is displayed on the display screen of the MCU, and the screen presented by the MCU display screen is divided into (M+1) sub-pictures;
  • the first padding sub-module 803 is further configured to fill the first conference terminal and the M conference terminals in corresponding sub-pictures in the picture presented by the MCU display screen.
  • the filling module 604 includes:
  • a second segmentation sub-module 804 configured to display the MCU display screen according to a segmentation direction of a screen presented by the MCU display screen according to an area of a video image sent by the N conference terminals in an image presented by the MCU display screen The picture is divided into N areas on average;
  • the second padding sub-module 805 is configured to fill the video images sent by the N conference terminals in the N areas.
  • the MCU After the N conference terminals are filled in the screen presented by the MCU display screen, the MCU sends the filled multi-picture to the conference terminals, and the TVs output by the conference terminals are A multi-screen with no black screen is presented.
  • An apparatus for optimizing multi-screen configuration of an MCU after analyzing and calculating a video image sent by N conference terminals, segmenting an image displayed by the MCU display screen and The video image is filled with a picture presented by the MCU display screen.
  • the multi-picture optimization configuration is performed in the prior art, since the multi-picture mode is preset, a black screen of the sub-picture may occur, and the sub-picture layout in the multi-picture is fixed, resulting in the TV output on the conference terminal.
  • the presented picture is not clear.
  • the solution provided by the embodiment of the present invention can eliminate the phenomenon of black screen of the sub-picture and clear the picture presented on the TV outputted by the conference terminal by adopting the method of dynamically generating the multi-picture.

Abstract

本发明公开了一种MCU多画面优化配置的方法及装置,涉及通信技术领域,可以消除子画面黑屏的现象并且使在会议终端输出的电视上呈现的画面清晰。本发明实施例提供的方案通过根据接收到的N个会议终端发送的视频图像的分辨率、带宽、帧率、重要程度和音量大小,计算所述各个视频图像占MCU显示屏幕呈现的画面中的面积,根据所述各个视频图像占MCU显示屏幕呈现的所述画面中的面积将所述画面分割成N个区域,并将所述N个会议终端发送的视频图像填充在所述画面的相应的区域中。本发明实施例提供的方案适合在进行多画面优化配置时使用。

Description

一种 MCU多画面优化配置的方法^ *置 本申请要求于 2011 年 06 月 13 日提交中国专利局、 申请号为 201110157719.2、 发明名称为"一种 MCU多画面优化配置的方法及装置"的中 国专利申请的优先权, 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信网络技术领域, 尤其涉及一种 MCU 多画面优化配置的方 法及装置。
背景技术
目前的视频会议支持多画面的会议, 可以将参加会议的各个会议终端的 情况真实的呈现在会议终端输出的电视上。 开会后在各个会议终端呈现的多 画面模式都是预先设定的,参加会议的各个会议终端入会后, MCU( Mul t ipoint Control Uni t , 多点控制单元)将接收到的各个会议终端的图像进行解码和 滤波, 然后根据会议终端个数选用最合适的多画面模式, 例如现在预先设定 的多画面模式包含 2画面、 4画面等, 当有 3个会议终端入会, 那么系统会选 择 4画面模式进行显示并将图像的格式根据子画面大小进行相应缩放处理后, 填入相应子画面中, 最后将 MCU调整好的多画面图像进行编码后发送给参加 会议的各个会议终端。
然而, 采用现有技术进行多画面优化配置时, 由于多画面模式是预先设 定的, 会出现子画面黑屏的现象。 发明内容
本发明的实施例提供一种 MCU 多画面优化配置的方法及装置, 可以消除 子画面黑屏的现象。
为达到上述目的, 本发明的实施例采用如下技术方案:
一种 MCU多画面优化配置的方法, 包括:
根据接收到的 N个会议终端发送的视频图像的分辨率、 带宽、 帧率、 重 要程度和音量大小, 计算所述各个视频图像占 MCU显示屏幕呈现的画面中的 面积 N为大于或等于 1的自然数;
根据所述各个视频图像占所述 MCU显示屏幕呈现的画面中的面积, 将所 述 MCU显示屏幕呈现的画面分割成 N个区域, 并将所述 N个会议终端发送的 视频图像填充在所述 MCU显示屏幕呈现的画面的相应的区域中。
一种 MCU多画面优化配置的装置, 包括:
计算单元, 用于根据接收到的 N个会议终端发送的视频图像的分辨率、 带宽、 帧率、 重要程度和音量大小, 计算所述各个视频图像占 MCU显示屏幕 呈现的画面中的面积, N为大于或等于 2的自然数;
填充单元, 用于根据所述各个视频图像占所述 MCU显示屏幕呈现的画面 中的面积, 将所述 MCU显示屏幕呈现的画面分割成 N个区域, 并将所述 N个 会议终端发送的视频图像填充在所述 MCU显示屏幕呈现的画面的相应的区域 中。
本发明实施例提供的一种 MCU多画面优化配置的方法及装置,通过计算 N 个会议终端发送的视频图像占 MCU显示屏幕呈现的画面中的面积, 并根据所 述各个视频图像占所述 MCU显示屏幕呈现的画面中的面积将所述 MCU显示屏 幕呈现的画面分割成 N个区域, 并将所述 N个会议终端发送的视频图像填充 在所述 MCU显示屏幕呈现的画面的相应的区域中。 与现有技术在进行 MCU多 画面优化配置时, 由于多画面模式是预先设定的, 可能会出现子画面黑屏的 现象相比, 本发明实施例提供的方案通过根据会议终端数量采用动态生成多 画面的方式, 可以消除子画面黑屏的现象。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术描述中所需要使用的附图作筒单地介绍, 显而易见地, 下面 描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明实施例 1提供的一种 MCU多画面优化配置的方法的流程图; 图 2为本发明实施例 1提供的一种 MCU多画面优化配置的装置的框图; 图 3为本发明实施例 2提供的一种 MCU多画面优化配置的方法的流程图; 图 4为本发明实施例 2提供的一种填充多画面的方法的流程图; 图 5为本发明实施例 2提供的另一种填充多画面的方法的流程图; 图 6为本发明实施例 2提供的一种 MCU多画面优化配置的装置的框图; 图 7为本发明实施例 2提供的确定模块的装置的框图;
图 8为本发明实施例 2提供的填充模块的装置的框图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而 不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作 出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
实施例 1
本发明实施例提供的一种 MCU多画面优化配置的方法, 如图 1所示, 该 方法包括:
步骤 101 , 根据接收到的 N个会议终端发送的视频图像的分辨率、 带宽、 帧率、 重要程度和音量大小, 计算所述各个视频图像占 MCU显示屏幕呈现的 画面中的面积, N为大于或等于 2的自然数;
这里, 发送的视频图像的会议终端可以为会议终端的摄像头、 会议终端 的具有发送功能的软件。
步骤 102 ,根据所述各个视频图像占所述 MCU显示屏幕呈现的画面中的面 积, 将所述 MCU显示屏幕呈现的画面分割成 N个区域, 并将所述 N个会议终 端发送的视频图像填充在所述 MCU显示屏幕呈现的画面的相应的区域中。
这里, 在 MCU显示屏幕呈现的画面的相应的区域中填充视频图像后的画 面为多画面。 根据参加会议的会议终端的个数动态的分割 MCU显示屏幕呈现 的画面, 可以消除黑屏的现象。
本发明实施例提供的一种 MCU多画面优化配置的方法, 通过计算 N个会 议终端发送的视频图像占 MCU显示屏幕呈现的画面中的面积, 并将所述 N个 会议终端填充在所述 MCU显示屏幕呈现的画面的相应的区域中。 与现有技术 在进行 MCU 多画面优化配置时, 由于多画面模式是预先设定的, 可能会出现 子画面黑屏的现象相比, 本发明实施例提供的方案根据会议终端数量, 通过 采用动态生成多画面的方式, 可以消除子画面黑屏的现象。
本发明实施例提供一种 MCU多画面优化配置的装置,所述装置可以为 MCU, 也可以为集成了 MCU多画面优化配置处理单元的会议终端, 如图 1所示, 该 装置包括: 计算单元 201 , 填充单元 202。
计算单元 201 ,用于根据接收到的 N个会议终端发送的视频图像的分辨率、 带宽、 帧率、 重要程度和音量大小, 计算所述各个视频图像占 MCU显示屏幕 呈现的画面中的面积, N为大于或等于 2的自然数;
填充单元 202 ,用于根据所述各个视频图像占所述 MCU显示屏幕呈现的画 面中的面积, 将所述 MCU显示屏幕呈现的画面分割成 N个区域, 并将所述 N 个会议终端发送的视频图像填充在所述 MCU显示屏幕呈现的画面的相应的区 域中。
本发明实施例提供的一种 MCU 多画面优化配置的装置, 通过计算单元计 算 N个会议终端发送的视频图像占 MCU显示屏幕呈现的画面中的面积, 填充 单元并将所述 N个会议终端填充在所述 MCU显示屏幕呈现的画面的相应的区 域中。 与现有技术在进行 MCU 多画面优化配置时, 由于多画面模式是预先设 定的, 可能会出现子画面黑屏的现象相比, 本发明实施例提供的方案根据会 议终端数量, 通过采用动态生成多画面的方式, 可以消除子画面黑屏的现象。
实施例 2
本发明实施例提供一种 MCU多画面优化配置的方法, 如图 3所示, 该方 法包括:
步骤 301 ,接收 N个会议终端发送的视频图像, 获得所述各个视频图像的 分辨率、 带宽、 帧率、 重要程度和音量大小, N为大于或等于 2的自然数; 接收 N个会议终端发送的视频码流, 这里, 发送视频图像的会议终端可 以为会议终端的摄像头、 会议终端的具有发送功能的软件。 然后 MCU对所述 视频码流进行解码, 获取所述视频图像, 并由 MCU获取所述各个视频图像的 分辨率、 带宽、 帧率、 重要程度和音量大小。 这里, 重要程度是根据实际情 况由参加会议的人员决定的,可以用 p表示视频码流的重要程度,例如: p=3oy。, 表示视频码流的重要程度不高, Ρ=85%, 表示此视频码流很重要; 发送视频码 流时, 在压缩协议中携带视频码流的重要程度 Ρ标识和 Ρ的具体值。
步骤 302, 根据所述各个视频图像的分辨率、 带宽、 帧率、 重要程度和音 量大小, 获取各个视频图像占 MCU显示屏幕呈现的画面中的面积;
初始时, MCU显示屏幕呈现的画面为一个完整的画面, 当根据本发明实施 例提供的方法, 将 Ν个会议终端发送的视频图像填充到 MCU显示屏幕呈现的 画面中后, 即为一个由两个或者两个以上子画面构成的多画面。
具体地, 各个视频图像占 MCU显示屏幕呈现的画面中的面积,
才艮据 St =[ ÷(R1+R2+R3+... + RN)xI^+BI ÷ ( Bx + B2 + B3 + ... + BN ) χ + Ft ÷ ( Fx + F2 +F3 + ...+ FN)xL3 + PI ÷ (P1 + P2 +P3 +...+ PN)xL4 +V: ÷ +V2 +V3 + ... + VN) x L5 x S多计算各个视频图像占所述画面中的面积;
其中, S:表示第 I个会议终端发送的视频图像占所述 MCU显示屏幕呈现 的画面中的面积, 表示第 I个会议终端发送的视频图像的分辨率, B:表示 第 I个会议终端发送的视频图像的带宽, 表示第 I个会议终端发送的视频图 像的帧率, 表示第 I 个会议终端发送的视频图像的重要程度, ¼表示第 I 个会议终端发送的视频图像的音量大小, 所述 I取值为 1至 N,N为发送视频 图像的会议终端的个数; S 表示 MCU显示屏幕呈现的画面的面积; L: 为系数, L!+ L2+ L3+ L4+ L5=l, l^ ^O, l^ ^O, l^ ^O, l^ ^O, l^ ^O, 所述
L2、 L3、 L4、 L5的值根据实际情况由参加会议的人员决定的, 携带在视频 图像中发送给 MCU。
步骤 303,根据所述 N个会议终端发送的所述视频图像和所述 MCU显示屏 幕呈现的画面确定所述 MCU显示屏幕呈现的画面的分割方向;
所述 MCU显示屏幕呈现的画面的分割方向具体有: 按所述 MCU显示屏幕 呈现的画面的水平方向分割和按所述 MCU显示屏幕呈现的画面的垂直方向分 割两种方式。
例如: 则按 MCU显示屏幕呈现的画面的水平方向将画面平均分割成 5个 区域为:
Figure imgf000007_0001
例如: 则按 MCU显示屏幕呈现的画面的垂直方向将画面平均分割成 5个 区域为:
区域 1
区域 2
区域 3
区域 4
区域 5
根据所述 N个会议终端发送的所述视频图像和所述 MCU显示屏幕呈现的 画面确定所述 MCU显示屏幕呈现的画面的分割方向, 具体为, 首先, 根据步 骤 302计算得出的各个视频图像占所述 MCU显示屏幕呈现的画面中的面积, 确定发送的视频图像占所述 MCU显示屏幕呈现的画面中面积最大的会议终端 为第一会议终端;
具体地, 所述确定所述 MCU显示屏幕呈现的画面的分割方向为,
If (A/C<E/D)
K=l
El se i f (A/C=E/D)
I f (A<E)
K=l
E l se
K=0 El se
K=0,
其中,其中所述 MCU显示屏幕呈现的画面的分辨率为 Ax E,所述第一会议 终端发送的所述视频图像的分辨率为 Cx D;
即, 计算 A/C的第一比值, 计算 E/D的第二比值, 其中所述画面的分辨 率为 Ax E, 所述第一会议终端发送的所述视频图像的分辨率为 Cx D;
判断所述第一比值是否比所述第二比值小;
当所述第一比值小于所述第二比值时, 确定所述 MCU显示屏幕呈现的画 面的分割方向为按所述 MCU显示屏幕呈现的画面的水平方向分割;
当所述第一比值等于所述第二比值并且 A大于 E时, 确定所述 MCU显示 屏幕呈现的画面的分割方向为按所述 MCU显示屏幕呈现的画面的垂直方向分 割; 当所述第一比值等于所述第二比值并且 A小于 E时, 确定所述 MCU显示 屏幕呈现的画面的分割方向为按所述 MCU显示屏幕呈现的画面的水平方向分 割;
当所述第一比值大于所述第二比值时, 确定所述 MCU显示屏幕呈现的画 面的分割方向为按所述 MCU显示屏幕呈现的画面的垂直方向分割。
步骤 304 ,根据所述各个视频图像占所述 MCU显示屏幕呈现的画面中的面 积, 按照所述 MCU显示屏幕呈现的画面的分割方向将所述 MCU显示屏幕呈现 的画面分割成 N个区域, 并将所述 N个会议终端发送的视频图像填充在所述 MCU显示屏幕呈现的画面的相应的区域中;
这里, 分割指采用算法将 MCU 的显示屏幕呈现的画面进行虚拟的划分, 使在一个画面中呈现出两个或者多个子画面的技术。
根据步骤 302计算的所述各个视频图像占所述 MCU显示屏幕呈现的画面 中的面积, 本发明可以采用以下任一种方式, 动态地分割所述 MCU显示屏幕 呈现的画面, 并将所述 N个会议终端发送的视频图像填充在所述 MCU显示屏 幕呈现的画面的相应的区域中。
方式一: 如图 4所示, 包括: 步骤 401 , 分别计算 与82、 S3...S 比值, 并确定所述比值中小于或等于 预设值的会议终端个数 M, 所述 M为自然数;
这里, Si为所述第一会议终端发送的视频图像占 MCU显示屏幕呈现的画面 中的面积, S2、 S3...SN为除第一会议终端之外的会议终端发送的视频图像占 MCU 显示屏幕呈现的画面中的面积, 所述预设值是根据工作人员的实际经验确定 的, 例如所述预设值可以为 1. 25。
步骤 402 , 判断所述 M的值是否为等于(N-1 ), N为发送视频图像的会议 终端的个数;
步骤 403 , 当所述 M不等于 (N-1 ) 时, 根据所述 MCU显示屏幕呈现的画 面的分割方向, 按照所述^与所述 M 个会议终端发送的所述视频图像占所述 MCU显示屏幕呈现的画面中的面积, 将所述 MCU显示屏幕呈现的画面分割成 ( M+2 )个子画面;
例如, 参加会议的共有 A会议终端、 B会议终端、 C会议终端、 D会议终 端、 E会议终端 5个会议终端, 其中, A会议终端发送的视频图像占 MCU显示 屏幕呈现的画面的面积最大, 则 A会议终端为所述第一会议终端, 通过计算 后, 确定 SA/SB小于预设值,则 M为 1 , 除所述第一会议终端之外的一个会议终 端为 B会议终端。
例如, 根据所述 MCU显示屏幕呈现的画面的分割方向为按所述画面的水 平方向分割, M=l , 除所述第一会议终端之外的一个会议终端为 B会议终端, 则按照所述第一会议终端发送的所述视频图像中占所述 MCU显示屏幕呈现的 画面中的面积, 与所述 M个会议终端发送的所述视频图像中占所述 MCU显示 屏幕呈现的画面中的面积, 将所述 MCU显示屏幕呈现的画面分割成 3个子画 面, 则所述画面的水平方向上从左到右依次是为所述第一会议终端分割的子 画面, 为 B会议终端分割的子画面, 如下示意图所示: 1 2 3
为第一会议终端 为 B会议终端分
分割的子画面 割的子画面 步骤 404 ,将所述第一会议终端发送的视频图像和所述 M个会议终端发送 的视频图像填充在所述 MCU显示屏幕呈现的画面中的相应的子画面中。
具体地, 按照上述示意图, 将所述第一会议终端发送的视频图像填充在 为所述第一会议终端分割的子画面中, 将 B会议终端发送的视频图像填充在 为为 B会议终端分割的子画面。
需要说明的是, 当对所述第一会议终端和所述 M个会议终端填充完成后, 将剩余的 [N_ ( M+1 ) ]个会议终端发送的视频图像按照所述(M+1 ) 个会议终 端的 MCU多画面优化配置的方法填充剩余的所述 MCU显示屏幕呈现的画面中, 具体地, 确定未填充的 MCU显示屏幕呈现的新画面的面积, 确定除所述第一 会议终端和所述 M个会议终端之外的其他会议终端发送的视频图像, 占所述 MCU显示屏幕呈现的新画面中的面积,并确定所述各个视频图像占 MCU显示屏 幕呈现的新画面中的面积最大的会议终端, 再计算所述 MCU显示屏幕呈现的 新画面的分割方向, 按照所述 MCU显示屏幕呈现的新画面的分割方向分割所 述新画面, 并进行填充。
步骤 405 , 当所述 M等于 (N-1 ) 时, 根据所述述 MCU显示屏幕呈现的画 面的分割方向,按照所述 Si与所述 M个会议终端发送的所述视频图像中占所述 述 MCU显示屏幕呈现的画面中的面积, 将所述述 MCU显示屏幕呈现的画面分 割成(M+1 ) 个子画面;
例如, 参加会议的共有 A会议终端、 B会议终端、 C会议终端、 D会议终 端、 E会议终端 5个会议终端, 其中, A会议终端发送的视频图像占 MCU显示 屏幕呈现的画面的面积最大, 则 A会议终端为所述第一会议终端, 通过计算 后, 确定 SA与 SB的比值小于预设值, SA与 Se的比值小于预设值, SA与 SD的比 值小于预设值, SA与 SE的比值小于预设值,则 M为 4 , 除所述第一会议终端之 外的四个会议终端为 B会议终端、 C会议终端、 D会议终端、 E会议终端, 然 后根据各个会议终端发送的视频图像占 MCU显示屏幕呈现的画面中面积的大 小在所述画面的分割方向上, 将所述 MCU显示屏幕呈现的画面分割成(M+1 ) 个子画面。
步骤 406 ,将所述第一会议终端发送的视频图像和所述 M个会议终端发送 的视频图像填充在所述 MCU显示屏幕呈现的画面中的相应的子画面中。
具体地, 按照 N个会议终端发送的视频图像占 MCU显示屏幕呈现的画面 的面积, 将 N个会议终端相应的填充在画面中。
方式二, 如图 5所示, 包括:
步骤 501 ,根据所述 N个会议终端发送的视频图像占所述 MCU显示屏幕呈 现的画面中的面积,按照所述 MCU显示屏幕呈现的画面的分割方向将所述 MCU 显示屏幕呈现的画面平均分割成 N个区域;
例如: 假设 A、 B两个会议终端发送的视频图像需要在所述 MCU显示屏幕 呈现的画面中显示,则按所述 MCU显示屏幕呈现的画面的分割方向将所述 MCU 显示屏幕呈现的画面平均分割成 2个子画面。
步骤 502 , 将所述 N个会议终端发送的视频图像填充在所述 N个区域中。 由于步骤 501分割成的 N个区域的大小相同, 所以每个会议终端发送的 视频图像占 MCU显示屏幕呈现的画面中的任一个区域都可以, 将所述 N个会 议终端都填充在所述 MCU显示屏幕呈现的画面中后, 这时 MCU的显示屏幕上 呈现的画面为多画面, MCU将所述填充好的多画面发送给所述各个会议终端, 在所述各个会议终端输出的电视上不会出现黑屏的现象。
需要说明的是, 本发明实施例提供的方案, 根据会议终端的数量自动调 整多画面模式, 当会议终端由于状态变化而导致需要在所述多画面中显示的 所述视频图像的数量减少或者增加时, 所述多画面中子画面个数随之调整, 给用户呈现更好更优的显示效果。
另外, 本发明实施例提供的方案, 根据入会会议终端的情况自动适配出 多画面的填充模式, 会议终端情况包括但不仅限于会议终端的: 数量、 分辨 率、 带宽、 帧率、 重要程度、 音量大小等。 在对所述多画面进行填充时, 也 可以根据各个会议终端的情况中的某一种情况为主, 自动适配出多画面的填 充模式。
例如, 可以以帧率为主自动适配出多画面模式, 会议终端发送的视频图 像帧率大的子画面就大, 帧率小的子画面就小。假设当前4、 B会议终端入会, A会议终端发送的视频图像的帧率为每秒 60帧, B会议终端发送的视频图像 的帧率为每秒 20帧, 则根据 60/20*R=3/l *R ( R>0 ), 计算得出需要将 MCU显 示屏幕呈现的的画面分割成 W个区域, 所述 W为表示所述比值的分数的分母 与分子的和,所述 R为调节系数, 一般, 所述 R为 1。 这时, 将所述画面分割 成 4个区域, 其中 A会议终端发送的视频图像占 3个区域, B会议终端发送的 视频图像占 1个区域。
本发明实施例提供的一种 MCU 多画面优化配置的方法, 可以根据各个会 议终端发送的视频图像, 自动分割 MCU显示屏幕呈现的画面, 自动调整多画 面的填充模式, 与现有技术在进行 MCU 多画面优化配置时, 由于多画面模式 是预先设定的, 可能会出现子画面黑屏的现象, 多画面中的子画面布局是固 定的, 导致在会议终端输出的电视上呈现的画面不清晰相比, 本发明实施例 提供的方案通过采用动态生成多画面的方式, 可以消除子画面黑屏的现象并 且使在会议终端输出的电视上呈现的画面清晰。
本发明实施例提供一种 MCU多画面优化配置的装置,所述装置可以为 MCU, 也可以为集成了 MCU多画面优化配置处理单元的会议终端, 如图 6所示, 该 装置包括: 计算单元 601 , 填充单元 602 , 确定模块 603 , 填充模块 604。
计算单元 601 ,用于根据接收到的 N个会议终端发送的视频图像的分辨率、 带宽、 帧率、 重要程度和音量大小, 计算所述各个视频图像占 MCU显示屏幕 呈现的画面中的面积;
具体地, 所述计算单元 601首先根据接收 N个会议终端发送的视频图像, 获得所述各个视频图像的分辨率、 带宽、 帧率、 重要程度和音量大小; 然后 根据获得的所述各个视频图像分辨率、 带宽、 帧率、 重要程度和音量大小, 计算各个视频图像占所述 MCU显示屏幕呈现的画面中的面积。
才艮据 St =[ ÷(R1+R2+R3+... + RN)xI^+BI ÷ ( Bx + B2 + B3 + ... + BN ) χ + Ft ÷ ( Fx + F2 +F3 + ...+ FN)xL3 +PI ÷( +P2 +P3 +...+ PN)xL4 +V: ÷ +V2 +V3 + ... + VN) x L5 x S多计算各个视频图像占所述画面中的面积;
其中, S:表示第 I个会议终端发送的视频图像占所述 MCU显示屏幕呈现 的画面中的面积, 表示第 I个会议终端发送的视频图像的分辨率, B:表示 第 I个会议终端发送的视频图像的带宽, 表示第 I个会议终端发送的视频图 像的帧率, 表示第 I 个会议终端发送的视频图像的重要程度, Vi表示第 I 个会议终端发送的视频图像的音量大小, 所述 I取值为 1至 N,N为发送视频 图像的会议终端的个数; S多表示多画面的面积; 为系数, L2+ L3+ L4+ L5=l, l^L^O,
1^L2^0, 1^L3^0, 1^L4^0, l^L5^0o 所述 L1 L2、 L3、 L4、 L5的值根据实 际情况由参加会议的人员决定。
填充单元 602,用于根据所述各个视频图像占所述 MCU显示屏幕呈现的画 面中的面积, 将所述 MCU显示屏幕呈现的画面分割成 N个区域, 并将所述 N 个会议终端发送的视频图像填充在所述 MCU显示屏幕呈现的画面的相应的区 域中;
具体地, 所述填充单元 602中的确定模块 603, 用于根据所述 N个会议终 端发送的所述视频图像和所述 MCU显示屏幕呈现的画面确定所述 MCU显示屏 幕呈现的画面的分割方向;
当确定所述 MCU显示屏幕呈现的画面的分割方向时, 如图 7所示, 所述 确定模块 603包括: 第一确定子模块 701, 计算子模块 702, 判断子模块 703, 第二确定子模块 704。
第一确定子模块 701 ,用于确定发送的视频图像占所述 MCU显示屏幕呈现 的画面中面积最大的会议终端为第一会议终端;
计算子模块 702, 用于计算 A/C的第一比值, 计算 E/D的第二比值, 其中 所述画面的分辨率为 A X E ,所述第一会议终端发送的所述视频图像的分辨率为 Cx D;
然后判断子模块 703判断所述第一比值是否比所述第二比值小; 当所述第一比值小于所述第二比值时, 第二确定子模块 704 , 确定所述
MCU显示屏幕呈现的画面的分割方向为按所述 MCU显示屏幕呈现的画面的水平 方向分割;
当所述第一比值等于所述第二比值并且 A大于 E时, 所述第二确定子模 块 704 , 还用于, 确定所述 MCU显示屏幕呈现的画面的分割方向为按所述 MCU 显示屏幕呈现的画面的垂直方向分割; 当所述第一比值等于所述第二比值并 且 A小于 E时, 所述第二确定子模块 704还用于, 确定所述 MCU显示屏幕呈 现的画面的分割方向为按所述 MCU显示屏幕呈现的画面的水平方向分割; 当所述第一比值大于所述第二比值时, 所述第二确定子模块 704还用于, 确定所述 MCU显示屏幕呈现的画面的分割方向为按所述 MCU显示屏幕呈现的 画面的垂直方向分割。
填充模块 604 ,用于根据所述各个视频图像占所述 MCU显示屏幕呈现的画 面中的面积, 按照所述 MCU显示屏幕呈现的画面的分割方向分割所述 MCU显 示屏幕呈现的画面, 并将所述 N个会议终端发送的视频图像填充在所述 MCU 显示屏幕呈现的画面的相应的区域中。
具体地, 在填充所述多画面时, 包括以下任一种方式:
方式一, 如图 8所示, 所述填充模块 604包括: 计算确定子模块 801 , 第 一分割子模块 802 , 第一填充子模块 803 , 第二分割子模块 804 , 第二填充子 模块 805。
确定所述画面的分割方向后, 计算确定子模块 801 , 用于分别计算 81与 S2、 S3...S 比值, 并确定所述比值中小于或等于预设值的会议终端个数 M, M 为自然数;
所述预设值是根据工作人员的实际经验确定的, 例如所述预设值可以为 1. 25。
第一分割子模块 802 , 用于当所述 M不等于 (N-1 ) 时, 根据所述 MCU显 示屏幕呈现的画面的分割方向,按照所述 与所述 M个会议终端发送的所述视 频图像中占所述 MCU显示屏幕呈现的画面中的面积, 将所述 MCU显示屏幕呈 现的画面分割成(M+2 ) 个子画面;
第一填充子模块 803 , 用于将所述第一会议终端发送的视频图像和所述 M 个会议终端发送的视频图像填充在所述 MCU显示屏幕呈现的画面中的相应的 子画面中;
需要说明的是, 当对所述第一会议终端和所述 M个会议终端填充完成后, 将剩余的 [N_ ( M+1 ) ]个会议终端发送的视频图像, 按照所述(M+1 ) 个会议 终端的 MCU多画面优化配置的方法填充剩余的所述 MCU显示屏幕呈现的画面 中。
当所述 M等于 (N-1 ) 时, 所述第一分割子模块 802还用于根据所述 MCU 显示屏幕呈现的画面的分割方向,按照所述^与所述 M个会议终端发送的所述 视频图像中占所述 MCU显示屏幕呈现的画面中的面积, 将所述 MCU显示屏幕 呈现的画面分割成(M+1 ) 个子画面;
所述第一填充子模块 803还用于将所述第一会议终端和所述 M个会议终 端填充在所述 MCU显示屏幕呈现的画面中的相应的子画面中.
方式二, 所述填充模块 604包括:
第二分割子模块 804 , 用于根据所述 N个会议终端发送的视频图像占 MCU 显示屏幕呈现的画面中的面积, 按照所述 MCU显示屏幕呈现的画面的分割方 向将所述 MCU显示屏幕呈现的画面平均分割成 N个区域;
第二填充子模块 805 ,用于将所述 N个会议终端发送的视频图像填充在所 述 N个区域中。
将所述 N个会议终端都填充在所述 MCU显示屏幕呈现的画面中后, MCU将 所述填充好的多画面发送给所述各个会议终端, 在所述各个会议终端输出的 电视上即可呈现出没有黑屏的多画面。
本发明实施例提供的一种 MCU 多画面优化配置的装置, 通过根据获取 N 个会议终端发送的视频图像, 分析计算后, 分割 MCU显示屏幕呈现的画面并 将所述视频图像填充所述 MCU显示屏幕呈现的画面。 与现有技术在进行多画 面优化配置时, 由于多画面模式是预先设定的, 可能会出现子画面黑屏的现 象, 多画面中的子画面布局是固定的, 导致在会议终端输出的电视上呈现的 画面不清晰, 本发明实施例提供的方案通过采用动态生成多画面的方式, 可 以消除子画面黑屏的现象并且使在会议终端输出的电视上呈现的画面清晰。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应所述以权利要求的保护范围为准。

Claims

权利要求书
1、 一种多点控制单元 MCU多画面优化配置的方法, 其特征在于, 包括: 根据接收到的 N个会议终端发送的视频图像的分辨率、 带宽、 帧率、 重要 程度和音量大小, 计算所述各个视频图像占 MCU显示屏幕呈现的画面中的面积, N为大于或等于 1的自然数;
根据所述各个视频图像占所述 MCU显示屏幕呈现的画面中的面积, 将所述 MCU显示屏幕呈现的画面分割成 N个区域,并将所述 N个会议终端发送的视频图 像填充在所述 MCU显示屏幕呈现的画面的相应的区域中。
2、 根据权利要求 1所述的一种 MCU多画面优化配置的方法, 其特征在于, 所述计算所述各个视频图像占 MCU显示屏幕呈现的画面中的面积包括:
才艮据 St =[ ÷(R1 +R2 +R3 +... + RN)xI^ +BI ÷ ( Bx + B2 + B3 + ... + BN ) χ + Ft ÷ ( Fx + F2 +F3 + ...+ FN)xL3 + PI ÷ (P1 + P2 +P3 +...+ PN)xL4 +V: ÷ +V2 +V3 + ... + VN) x L5] x S多计算各个视频图像占所述 MCU显示屏幕呈现的画面中的面积;
其中, S:表示第 I个会议终端发送的视频图像占所述 MCU显示屏幕呈现的 画面中的面积, 表示第 I 个会议终端发送的视频图像的分辨率, B:表示第 I 个会议终端发送的视频图像的带宽, 表示第 I个会议终端发送的视频图像的帧 率, 表示第 I个会议终端发送的视频图像的重要程度, ¼表示第 I个会议终 端发送的视频图像的音量大小, 所述 I取值为 1至 N; S多表示 MCU显示屏幕呈现 的画面的面积; L: 为系数, + + + + =1, 1^ ^ , 1^L2^0, 1^L3^0, 1^L4^0, l^L5^0o
3、 根据权利要求 1-2中任一项所述的一种 MCU多画面优化配置的方法, 其 特征在于, 所述根据所述各个视频图像占所述 MCU显示屏幕呈现的画面中的面 积将所述 MCU显示屏幕呈现的画面分割成 N个区域, 包括:
根据所述 N个会议终端发送的所述视频图像和所述 MCU显示屏幕呈现的画 面确定所述 MCU显示屏幕呈现的画面的分割方向;
根据所述各个视频图像占所述 MCU显示屏幕呈现的画面中的面积, 按照所 述 MCU显示屏幕呈现的画面的分割方向分割所述画面。
4、 根据权利要求 1-3中任一项所述的一种 MCU多画面优化配置的方法, 其 特征在于, 所述根据所述 N个会议终端发送的所述视频图像和所述 MCU显示屏 幕呈现的画面确定所述 MCU显示屏幕呈现的画面的分割方向包括:
确定发送的视频图像占所述 MCU显示屏幕呈现的画面中的面积最大的会议
Figure imgf000018_0001
计算 A/C的第一比值, 计算 E/D的第二比值, 其中所述 MCU显示屏幕呈现 的画面的分辨率为 Ax E , 所述第一会议终端发送的所述视频图像的分辨率为 Cx D;
判断所述第一比值是否比所述第二比值小;
当所述第一比值小于所述第二比值时, 确定所述 MCU显示屏幕呈现的画面 的分割方向为按所述 MCU显示屏幕呈现的画面的水平方向分割;
当所述第一比值等于所述第二比值、 并且 A大于 B时, 确定所述 MCU显示 屏幕呈现的画面的分割方向为按所述 MCU显示屏幕呈现的画面的垂直方向分割; 当所述第一比值等于所述第二比值、 并且 A小于 B时, 确定所述 MCU显示屏幕 呈现的画面的分割方向为按所述 MCU显示屏幕呈现的画面的水平方向分割; 当所述第一比值大于所述第二比值时, 确定所述 MCU显示屏幕呈现的画面 的分割方向为按所述 MCU显示屏幕呈现的画面的垂直方向分割。
5、 根据权利要求 1-4中任一项所述的一种 MCU多画面优化配置的方法, 其 特征在于, 所述根据所述各个视频图像占所述 MCU显示屏幕呈现的画面中的面 积, 将所述 MCU显示屏幕呈现的画面分割成 N个区域, 并将所述 N个会议终端 发送的视频图像填充在所述 MCU显示屏幕呈现的画面的相应的区域中包括: 分别计算 与82、 S3...S 比值, 并确定所述比值中小于或等于预设值的会 议终端个数 M, M为自然数;
当所述 M不等于(N-1 )时,根据所述 MCU显示屏幕呈现的画面的分割方向, 按照所述81与所述 M个会议终端发送的所述视频图像占所述 MCU显示屏幕呈现的 画面中的面积, 将所述 MCU显示屏幕呈现的画面分割成(M+2 )个子画面; 将所 述第一会议终端发送的视频图像和所述 M个会议终端发送的视频图像填充在所 述 MCU显示屏幕呈现的画面中的相应的子画面中; 将剩余的 [N_ ( M+1 ) ]个会议 终端发送的视频图像, 按照所述(M+1 )个会议终端的 MCU多画面优化配置的方 法填充剩余的所述 MCU显示屏幕呈现的画面中;
当所述 M等于 (N-1 ) 时, 根据所述 MCU显示屏幕呈现的画面的分割方向, 按照所述81与所述 M个会议终端发送的所述视频图像中占所述 MCU显示屏幕呈现 的画面中的面积, 将所述 MCU显示屏幕呈现的画面分割成(M+1 )个子画面; 将 所述第一会议终端发送的视频图像和所述 M个会议终端发送的视频图像填充在 所述 MCU显示屏幕呈现的画面中的相应的子画面中。
6、 根据权利要求 1-4中任一项所述的一种 MCU多画面优化配置的方法, 其 特征在于, 所述根据所述各个视频图像占所述 MCU显示屏幕呈现的画面中的面 积, 将所述 MCU显示屏幕呈现的画面分割成 N个区域, 并将所述 N个会议终端 发送的视频图像填充在所述 MCU显示屏幕呈现的画面的相应的区域中包括: 根据所述 N个会议终端发送的视频图像占所述 MCU显示屏幕呈现的画面中 的面积, 按照所述 MCU显示屏幕呈现的画面的分割方向将所述 MCU显示屏幕呈 现的画面平均分割成 N个区域;
将所述 N个会议终端发送的视频图像填充在所述 N个区域中。
7、 一种多点控制单元 MCU多画面优化配置的装置, 其特征在于, 包括: 计算单元, 用于根据接收到的 N个会议终端发送的视频图像的分辨率、 带 宽、 帧率、 重要程度和音量大小, 计算所述各个视频图像占 MCU显示屏幕呈现 的画面中的面积, N为大于或等于 2的自然数;
填充单元, 用于根据所述各个视频图像占所述 MCU显示屏幕呈现的画面中 的面积, 将所述 MCU显示屏幕呈现的画面分割成 N个区域, 并将所述 N个会议 终端发送的视频图像填充在所述 MCU显示屏幕呈现的画面的相应的区域中。
8、 根据权利要求 7所述的一种 MCU多画面优化配置的装置, 其特征在于, 所述填充单元包括:
确定模块, 用于根据所述 N个会议终端发送的所述视频图像和所述 MCU显 示屏幕呈现的画面确定所述 MCU显示屏幕呈现的画面的分割方向; 填充模块, 用于根据所述各个视频图像占所述 MCU显示屏幕呈现的画面中 的面积, 按照所述 MCU显示屏幕呈现的画面的分割方向分割所述画面, 并将所 述 N个会议终端发送的视频图像填充在所述 MCU显示屏幕呈现的画面的相应的 区域中。
9、 根据权利要求 7或 8所述的一种 MCU多画面优化配置的装置, 其特征在 于, 所述确定模块包括:
第一确定子模块, 用于确定发送的视频图像占所述 MCU显示屏幕呈现的画 面中的面积最大的会议终端为第一会议终端;
计算子模块, 用于计算 A/C的第一比值, 计算 B/D的第二比值, 其中所述 MCU显示屏幕呈现的画面的分辨率为 Ax B,所述第一会议终端发送的所述视频图 像的分辨率为 Cx D;
判断子模块, 用于判断所述第一比值是否比所述第二比值小;
第二确定子模块, 用于当所述第一比值小于所述第二比值时, 确定所述 MCU 显示屏幕呈现的画面的分割方向为按所述 MCU显示屏幕呈现的画面的水平方向 分割;
所述第二确定子模块还用于, 当所述第一比值等于所述第二比值并且 A 大 于 B时, 确定所述 MCU显示屏幕呈现的画面的分割方向为按所述 MCU显示屏幕 呈现的画面的垂直方向分割; 当所述第一比值等于所述第二比值并且 A 小于 B 时, 确定所述 MCU显示屏幕呈现的画面的分割方向为按所述 MCU显示屏幕呈现 的画面的水平方向分割;
所述第二确定子模块还用于, 当所述第一比值大于所述第二比值时, 确定 所述 MCU显示屏幕呈现的画面的分割方向为按所述 MCU显示屏幕呈现的画面的 垂直方向分割。
10、 根据权利要求 7-9 中任一项所述的一种 MCU多画面优化配置的装置, 其特征在于, 所述填充模块包括:
计算确定子模块, 用于分别计算 81与82、 S3...S 比值, 并确定所述比值中 小于或等于预设值的会议终端个数 M , M为自然数; 第一分割子模块, 用于当所述 M不等于 (N-1 ) 时, 根据所述 MCU显示屏幕 呈现的画面的分割方向,按照所述 Si与所述 M个会议终端发送的所述视频图像中 占所述 MCU显示屏幕呈现的画面中的面积, 将所述 MCU显示屏幕呈现的画面分 割成(M+2 )个子画面; 第一填充子模块, 用于将所述第一会议终端发送的视频 图像和所述 M个会议终端发送的视频图像填充在所述 MCU显示屏幕呈现的画面 中的相应的子画面中;
所述第一分割子模块还用于当所述 M等于(N-1 ) 时, 根据所述 MCU显示屏 幕呈现的画面的分割方向,按照所述 与所述 M个会议终端发送的所述视频图像 中占所述 MCU显示屏幕呈现的画面中的面积, 将所述 MCU显示屏幕呈现的画面 分割成(M+1 )个子画面; 所述第一填充子模块还用于将所述第一会议终端发送 的视频图像和所述 M个会议终端发送的视频图像填充在所述 MCU显示屏幕呈现 的画面中的相应的子画面中。
11、 根据权利要求 7-9 中任一项所述的一种 MCU多画面优化配置的装置, 其特征在于, 所述填充模块包括:
第二分割子模块, 用于根据所述 N个会议终端发送的视频图像占所述 MCU 显示屏幕呈现的画面中的面积, 按照所述 MCU显示屏幕呈现的画面的分割方向 将所述 MCU显示屏幕呈现的画面平均分割成 N个区域;
第二填充子模块, 用于将所述 N个会议终端发送的视频图像填充在所述 N 个区域中。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112272270A (zh) * 2020-09-28 2021-01-26 北海天下为星科技有限公司 一种视频数据处理方法

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104683729A (zh) * 2013-11-27 2015-06-03 华为技术有限公司 视频布局下发的方法及装置
CN105323532B (zh) * 2014-06-30 2019-10-15 中兴通讯股份有限公司 一种移动终端图像的自适应显示方法和装置
CN104240670B (zh) * 2014-10-10 2016-04-06 天津三星电子有限公司 一种显示参数调整的方法及显示器
CN106210599B (zh) * 2015-04-30 2021-02-12 中兴通讯股份有限公司 一种多画面调整方法、装置及多点控制单元
CN105451022A (zh) * 2015-11-17 2016-03-30 深圳联友科技有限公司 一种将多路视频流压缩成一路视频流的方法及系统
CN106561044B (zh) * 2016-12-09 2020-06-16 武汉斗鱼网络科技有限公司 一种安卓系统上竖屏视频黑边的处理方法及系统
US9819877B1 (en) 2016-12-30 2017-11-14 Microsoft Technology Licensing, Llc Graphical transitions of displayed content based on a change of state in a teleconference session
CN107040750A (zh) * 2017-03-23 2017-08-11 中国南方电网有限责任公司 一种实现2+n的大型视频会议分屏系统和方法
CN107333062A (zh) * 2017-07-05 2017-11-07 浙江华创视讯科技有限公司 一种视频图像处理的方法、系统及装置
US11184415B2 (en) 2018-05-07 2021-11-23 Apple Inc. Media feed prioritization for multi-party conferencing
CN110536097A (zh) * 2018-05-25 2019-12-03 中兴通讯股份有限公司 一种视频控制方法、视频会议终端和多点控制单元mcu
CN110996037A (zh) * 2019-11-14 2020-04-10 苏州中车建设工程有限公司 一种多点视频会议画面显示系统及其控制方法
CN110933359B (zh) * 2020-01-02 2021-07-02 随锐科技集团股份有限公司 一种视频会议智能布局方法、装置及计算机可读存储介质
CN111327959A (zh) * 2020-03-05 2020-06-23 Oppo广东移动通信有限公司 视频插帧方法及相关装置
CN113194276B (zh) * 2021-03-12 2023-07-28 广州朗国电子科技股份有限公司 在视频会议系统中生成动态布局的方法、系统、存储介质
CN113727149B (zh) * 2021-08-31 2023-06-30 京东方科技集团股份有限公司 显示控制方法和装置、视频处理装置、显示系统
CN113905204B (zh) * 2021-09-07 2023-02-14 深圳壹秘科技有限公司 图像显示方法、装置、设备及存储介质

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6124881A (en) * 1997-04-25 2000-09-26 Fujitsu Limited System for generating composed signals of multiple pictures for use in a video conference system
US6211902B1 (en) * 1997-11-28 2001-04-03 Nec Corporation Video conference control apparatus, video conference control method, and video conference control system
CN1422079A (zh) * 2002-12-27 2003-06-04 北京鼎视通软件技术有限公司 一种多画面输出方法及系统
CN101286314A (zh) * 2008-05-26 2008-10-15 杭州华三通信技术有限公司 一种多画面拼接方法和装置
CN101707714A (zh) * 2009-11-18 2010-05-12 深圳华为通信技术有限公司 多画面视频会议的图像处理方法和设备

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6005607A (en) * 1995-06-29 1999-12-21 Matsushita Electric Industrial Co., Ltd. Stereoscopic computer graphics image generating apparatus and stereoscopic TV apparatus
US7554571B1 (en) * 2005-03-18 2009-06-30 Avaya Inc. Dynamic layout of participants in a multi-party video conference
DE102005023652B3 (de) * 2005-05-23 2006-08-03 Semikron Elektronik Gmbh & Co. Kg Schaltungsanordnung mit Fehlererkennung zur Ansteuerung von Leistungshalbleiterschaltern und zugehöriges Verfahren
WO2007063922A1 (ja) * 2005-11-29 2007-06-07 Kyocera Corporation 通信端末および通信システム、並びに通信端末の表示方法
US8259624B2 (en) * 2006-10-27 2012-09-04 Cisco Technology, Inc. Dynamic picture layout for video conferencing based on properties derived from received conferencing signals

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6124881A (en) * 1997-04-25 2000-09-26 Fujitsu Limited System for generating composed signals of multiple pictures for use in a video conference system
US6211902B1 (en) * 1997-11-28 2001-04-03 Nec Corporation Video conference control apparatus, video conference control method, and video conference control system
CN1422079A (zh) * 2002-12-27 2003-06-04 北京鼎视通软件技术有限公司 一种多画面输出方法及系统
CN101286314A (zh) * 2008-05-26 2008-10-15 杭州华三通信技术有限公司 一种多画面拼接方法和装置
CN101707714A (zh) * 2009-11-18 2010-05-12 深圳华为通信技术有限公司 多画面视频会议的图像处理方法和设备

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112272270A (zh) * 2020-09-28 2021-01-26 北海天下为星科技有限公司 一种视频数据处理方法
CN112272270B (zh) * 2020-09-28 2022-03-01 北海天下为星科技有限公司 一种视频数据处理方法

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