WO2015176489A1 - 画面亮度调整方法、多点控制单元mcu及终端 - Google Patents

画面亮度调整方法、多点控制单元mcu及终端 Download PDF

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Publication number
WO2015176489A1
WO2015176489A1 PCT/CN2014/089491 CN2014089491W WO2015176489A1 WO 2015176489 A1 WO2015176489 A1 WO 2015176489A1 CN 2014089491 W CN2014089491 W CN 2014089491W WO 2015176489 A1 WO2015176489 A1 WO 2015176489A1
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WIPO (PCT)
Prior art keywords
brightness
sub
picture
brightness adjustment
mcu
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PCT/CN2014/089491
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English (en)
French (fr)
Inventor
苗军
孙博
李军
丁元欣
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中兴通讯股份有限公司
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Publication of WO2015176489A1 publication Critical patent/WO2015176489A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/15—Conference systems

Definitions

  • the present invention relates to the field of communications, and in particular to a screen brightness adjustment method, a multipoint control unit MCU, and a terminal.
  • a basic multi-view conference television system generally consists of at least two terminal devices, a transmission network, and a Multipoint Controller Unit (MCU).
  • the MCU is the core of the conference TV system.
  • the MCU is responsible for decoding the video sent by each terminal, and then synthesizing it into multiple pictures, and then re-encoding them to each terminal according to the requirements of the conference.
  • MCUs will access a variety of devices with video communication capabilities other than traditional videoconferencing terminals, such as various monitoring devices, recording and playback devices, smart phones, desktop terminals, and so on.
  • the MCU does not adjust the brightness of each sub-picture, and there may be a deviation between the brightness of some sub-pictures and the remaining sub-pictures, that is, the phenomenon of being bright or dark. If the image coming from this terminal is selected as the broadcast source to broadcast to each venue, then each venue will see a bright or dark image, which directly affects the perception of the conference TV.
  • the screen of the multi-conference screen system has a large variation in luminance, which affects the problem of the look and feel of the screen.
  • the invention provides a screen brightness adjustment method, a multi-point control unit MCU and a terminal, so as to at least solve the problem that the screen of the multi-conference picture system has large brightness deviation and affects the look and feel of the picture in the related art.
  • a method for adjusting a picture brightness includes: a multi-point control unit MCU determines to perform brightness adjustment on one or more sub-pictures in a multi-picture; and the MCU performs the multi-picture according to a predetermined brightness adjustment manner.
  • the brightness of the one or more sub-pictures is adjusted, wherein the predetermined brightness adjustment mode comprises at least one of: determining, by the MCU, a brightness adjustment value, determining, by the remote terminal receiving the multi-picture, brightness adjustment The way the value is.
  • the MCU is to the one or more of the multi-pictures according to the predetermined brightness adjustment manner.
  • Adjusting the brightness of the picture includes: obtaining an overall average brightness value of the multi-picture and a sub-picture average brightness value of each sub-picture in the multi-picture; determining a difference between the overall average brightness value and the sub-picture average brightness value Whether the value exceeds a predetermined threshold; if the result of the determination is YES, the difference is used as the brightness adjustment value to adjust the brightness of the sub-screen.
  • adjusting the brightness of the sub-picture by using the difference value as the brightness adjustment value comprises: transmitting a code stream corresponding to the brightness of the sub-picture according to the difference value to the remote end a terminal, wherein the code stream is obtained by adjusting, by the MCU and/or a source encoding terminal corresponding to the sub-picture, the brightness of the sub-picture according to the difference.
  • the predetermined brightness adjustment mode is a manner of determining the brightness adjustment value by the remote terminal receiving the multi-screen
  • the one of the multiple pictures is determined according to the predetermined brightness adjustment mode.
  • Adjusting the brightness of the plurality of sub-pictures includes: receiving a brightness adjustment request sent by the remote terminal for performing brightness adjustment on the sub-picture, wherein the brightness adjustment request includes an identifier of the sub-picture for adjusting brightness, and The brightness adjustment value is performed; and the brightness adjustment is performed on the sub-screen corresponding to the identifier according to the brightness adjustment value.
  • performing brightness adjustment on the sub-screen corresponding to the identifier according to the brightness adjustment value comprises: transmitting a code stream corresponding to the brightness of the sub-screen according to the brightness adjustment value to the remote terminal
  • the code stream is obtained by adjusting, by the MCU and/or the source coding terminal corresponding to the sub-picture, the brightness of the sub-picture according to the brightness adjustment value.
  • a screen brightness adjustment method comprising: receiving input information, wherein the input information is used to indicate adjustment of brightness of one or more sub-pictures in a multi-picture;
  • the control unit MCU sends a brightness adjustment request for performing brightness adjustment on the one or more sub-pictures, and receives a code stream that is brightness-adjusted for the one or more sub-pictures sent by the MCU.
  • a multipoint control unit MCU including: a determining module configured to determine brightness adjustment of one or more sub-pictures in a multi-picture; and an adjustment module configured to adjust according to a predetermined brightness adjustment manner The brightness of one or more sub-pictures in the multi-picture is adjusted, wherein the predetermined brightness adjustment mode comprises at least one of: a manner of determining a brightness adjustment value by the MCU, and receiving a remote end of the multi-picture The way the terminal determines the brightness adjustment value.
  • the adjustment module includes: an acquiring unit, configured to acquire an overall average brightness value and a location of the multi-screen in a manner that the predetermined brightness adjustment mode is the manner in which the brightness adjustment value is determined by the MCU a sub-picture average brightness value of each sub-picture in the multi-picture; the determining unit is configured to determine whether a difference between the overall average brightness value and the sub-picture average brightness value exceeds a predetermined threshold; the first adjusting unit is set to When the determination result is YES, the difference is used as the brightness adjustment value to adjust the brightness of the sub-screen.
  • the first adjusting unit includes: a first sending subunit, configured to send a code stream corresponding to the brightness of the sub-screen according to the difference value to the remote terminal, where The code stream is obtained by adjusting the brightness of the sub-picture by the MCU and/or the source coding terminal corresponding to the sub-picture according to the difference.
  • the adjustment module includes: a receiving unit, configured to receive the remote end if the predetermined brightness adjustment mode is a manner of determining the brightness adjustment value by a remote terminal that receives the multi-screen a brightness adjustment request for brightness adjustment of a sub-screen sent by the terminal, wherein the brightness adjustment request includes an identifier of a sub-screen for adjusting brightness, and the brightness adjustment value; and a second adjustment unit is configured to be according to the brightness Adjusting the value to adjust the brightness of the sub-screen corresponding to the identifier.
  • the second adjusting unit includes: a second sending subunit, configured to send, to the remote terminal, a code stream corresponding to the brightness adjustment of the sub-picture according to the brightness adjustment value, where The code stream is obtained by adjusting the brightness of the sub-picture by the MCU and/or the source coding terminal corresponding to the sub-picture according to the brightness adjustment value.
  • a second sending subunit configured to send, to the remote terminal, a code stream corresponding to the brightness adjustment of the sub-picture according to the brightness adjustment value, where The code stream is obtained by adjusting the brightness of the sub-picture by the MCU and/or the source coding terminal corresponding to the sub-picture according to the brightness adjustment value.
  • a terminal comprising: an input device configured to receive input information, wherein the input information is used to indicate adjustment of brightness of one or more sub-pictures in a multi-picture;
  • the device is configured to send a brightness adjustment request for brightness adjustment of the one or more sub-pictures to the multi-point control unit MCU, and the receiving device is configured to receive the brightness of the one or more sub-pictures sent by the MCU Adjusted code stream.
  • the multi-point control unit MCU is used to determine the brightness adjustment of one or more sub-pictures in the multi-picture; the MCU adjusts the brightness of one or more sub-pictures in the multi-picture according to a predetermined brightness adjustment manner, wherein
  • the predetermined brightness adjustment manner includes at least one of the following: a manner of determining a brightness adjustment value by the MCU, and a method for determining a brightness adjustment value by a remote terminal that receives the multi-screen, and solving a multi-conference picture in the related art.
  • the screen of the system has a large deviation in brightness, which affects the problem of the look and feel of the screen, and further achieves the effect of being able to adjust the brightness of a certain sub-picture in the multi-picture to improve the overall look and feel of the picture.
  • FIG. 1 is a flowchart of a method for adjusting a brightness of a screen according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for adjusting a brightness of a screen according to an embodiment of the present invention
  • FIG. 3 is a structural block diagram of a multipoint control unit MCU according to an embodiment of the present invention.
  • FIG. 4 is a block diagram 1 of a preferred structure of an adjustment module 34 in a multipoint control unit MCU according to an embodiment of the present invention
  • FIG. 5 is a block diagram showing a preferred structure of the first adjusting unit 46 in the adjusting module 34 in the multipoint control unit MCU according to an embodiment of the present invention
  • FIG. 6 is a block diagram 2 of a preferred structure of an adjustment module 34 in a multipoint control unit MCU according to an embodiment of the present invention
  • FIG. 7 is a block diagram showing a preferred structure of a second adjusting unit 64 in the adjusting module 34 in the multipoint control unit MCU according to an embodiment of the present invention.
  • FIG. 8 is a structural block diagram of a terminal according to an embodiment of the present invention.
  • FIG. 9 is a block diagram of a conference television system for adjusting a sub-picture brightness scheme according to a preferred embodiment of the present invention.
  • FIG. 10 is a flow chart of adjusting the brightness of a sub-picture by an MCU according to a preferred embodiment of the present invention
  • FIG. 11 is a flow chart of adjusting a sub-picture brightness of a terminal according to a preferred embodiment of the present invention.
  • FIG. 1 is a flowchart of a method for adjusting the brightness of a screen according to an embodiment of the present invention. As shown in FIG. 1 , the process includes the following steps:
  • Step S102 the multipoint control unit MCU determines to perform brightness adjustment on one or more sub-pictures in the multi-picture
  • Step S104 The MCU adjusts the brightness of one or more sub-pictures in the multi-picture according to a predetermined brightness adjustment manner, where the predetermined brightness adjustment mode includes at least one of the following: a manner of determining the brightness adjustment value by the MCU, and receiving the multi-picture The way the remote terminal determines the brightness adjustment value.
  • the MCU adjusts the brightness of one or more sub-pictures in the multi-picture according to the predetermined brightness adjustment mode, including: acquiring the overall average brightness of the multi-picture first. The value and the sub-picture average brightness value of each sub-picture in the multi-picture; after that, it is judged whether the difference between the overall average brightness value and the sub-picture average brightness value exceeds a predetermined threshold; if the judgment result is yes, the difference is taken as the brightness The adjustment value adjusts the brightness of the sub screen.
  • the code stream corresponding to the sub-picture brightness adjusted according to the difference is sent to the remote terminal, where the code stream may be
  • the MCU obtains the brightness of the sub-picture according to the difference, and may also send the sub-picture brightness adjustment request to the source coding terminal corresponding to the sub-picture, and the source coding terminal corresponding to the sub-picture adjusts the brightness of the sub-picture according to the difference. And get it.
  • the predetermined brightness adjustment method is a method of determining a brightness adjustment value by a remote terminal that receives a multi-screen
  • the following processing is: receiving a brightness adjustment request for adjusting a brightness of a sub-picture sent by a remote terminal, where the brightness adjustment request includes an identifier of a sub-screen for adjusting brightness, and a brightness adjustment value; and corresponding to the identifier according to the brightness adjustment value
  • the sub-picture is adjusted for brightness.
  • the brightness adjustment of the sub-picture corresponding to the identifier may also be performed by: transmitting a code stream corresponding to the brightness adjustment of the sub-picture according to the brightness adjustment value to the remote terminal, where the code stream may be
  • the MCU obtains the brightness of the sub-picture according to the brightness adjustment value, and the MCU may send the sub-picture brightness adjustment request to the source coding terminal corresponding to the sub-picture, and the source coding terminal corresponding to the sub-picture adjusts the brightness of the sub-picture according to the brightness adjustment value. Get adjusted.
  • FIG. 2 is a flowchart of a method for adjusting the brightness of the screen according to the embodiment of the present invention. As shown in FIG. 2, the flow includes the following steps:
  • Step S202 receiving input information, where the input information is used to indicate that the brightness of one or more sub-pictures in the multi-picture is adjusted;
  • Step S204 transmitting, to the multi-point control unit MCU, a brightness adjustment request for performing brightness adjustment on one or more sub-pictures;
  • Step S206 receiving a code stream that is adjusted by the MCU and performs brightness adjustment on one or more sub-pictures.
  • a multi-point control unit (MCU) and a terminal are also provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 3 is a structural block diagram of a multipoint control unit MCU according to an embodiment of the present invention. As shown in FIG. 3, the apparatus includes a determining module 32 and an adjusting module 34. The multipoint control unit MCU is described below.
  • the determining module 32 is configured to determine brightness adjustment of one or more sub-pictures in the multi-picture; the adjusting module 34 is connected to the determining module 32, and is configured to adjust the brightness of one or more sub-pictures in the multi-picture according to the predetermined brightness adjustment manner.
  • the adjustment is performed, wherein the predetermined brightness adjustment manner includes at least one of: a manner of determining a brightness adjustment value by the MCU, and a manner of determining a brightness adjustment value by the remote terminal receiving the multi-screen.
  • the adjustment module 34 includes an acquisition unit 42, a determination unit 44, and a first adjustment unit 46.
  • the adjustment module 34 will be described below.
  • the obtaining unit 42 is configured to acquire an overall average luminance value of the multi-screen and a sub-screen average luminance value of each sub-screen in the multi-screen in a case where the predetermined luminance adjustment mode is a manner of determining the luminance adjustment value by the MCU; the determining unit 44, The connection unit 42 is connected to the above, and is configured to determine whether the difference between the overall average brightness value and the sub-picture average brightness value exceeds a predetermined threshold; the first adjusting unit 46 is connected to the determining unit 44, and is set to be in the case that the determination result is yes. Next, the difference is used as the brightness adjustment value to adjust the brightness of the sub-picture.
  • FIG. 5 is a block diagram showing a preferred structure of the first adjusting unit 46 in the adjusting module 34 of the multi-point control unit MCU according to an embodiment of the present invention.
  • the first adjusting unit 46 includes a first transmitting sub-unit 52, The first transmitting subunit 52 will be described.
  • the first sending sub-unit 52 is configured to send the code stream corresponding to the brightness of the sub-picture according to the difference value to the remote terminal, where the code stream is determined by the MCU and/or the source coded terminal corresponding to the sub-picture according to the difference value.
  • the sub-picture brightness is adjusted and obtained.
  • FIG. 6 is a block diagram 2 of a preferred structure of an adjustment module 34 in a multipoint control unit MCU according to an embodiment of the present invention.
  • the adjustment module 34 includes a receiving unit 62 and a second adjusting unit 64. Module 34 is described.
  • the receiving unit 62 is configured to receive, after the predetermined brightness adjustment mode is a manner of determining a brightness adjustment value by the remote terminal receiving the multi-screen, receiving a brightness adjustment request for performing brightness adjustment on the sub-picture sent by the remote terminal,
  • the brightness adjustment request includes an identifier of the sub-screen for adjusting the brightness, and a brightness adjustment value.
  • the second adjustment unit 64 is connected to the receiving unit 62, and is configured to perform brightness adjustment on the sub-picture corresponding to the identifier according to the brightness adjustment value.
  • FIG. 7 is a block diagram showing a preferred structure of the second adjusting unit 64 in the adjusting module 34 of the multipoint control unit MCU according to the embodiment of the present invention.
  • the second adjusting unit 64 includes a second transmitting subunit 72, The second transmitting subunit 72 will be described.
  • the second sending sub-unit 72 is configured to send the code stream corresponding to the brightness adjustment of the sub-screen according to the brightness adjustment value to the remote terminal, where the code stream is adjusted by the MCU and/or the source coding terminal corresponding to the sub-picture according to the brightness The value is obtained by adjusting the brightness of the sub-picture.
  • FIG. 8 is a structural block diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 8, the terminal 80 includes an input device 82, a transmitting device 84, and a receiving device 86. The terminal 80 will be described below.
  • the input device 82 is configured to receive input information, wherein the input information is used to indicate that the brightness of one or more sub-screens in the multi-screen is adjusted.
  • the input device may be a touch screen or may be a mouse click.
  • the web page is of course not limited thereto, as long as it is a device that supports a mouse or touch screen for performing a screen drag input operation function;
  • the transmitting device 84 is connected to the input device 82 and is configured to transmit to the multipoint control unit MCU for one Or a plurality of sub-screens for brightness adjustment request for brightness adjustment;
  • the receiving device 86 is connected to the transmitting device 84, and is configured to receive a code stream that is adjusted by the MCU and that performs brightness adjustment on one or more sub-pictures.
  • the image of the multi-conference picture system has a brightness deviation, which affects the problem of the look and feel of the picture.
  • a method for realizing the brightness adjustment of the sub-picture in the multi-view conference television is provided.
  • the conference television user can automatically or manually adjust the brightness of each sub-picture in the multi-screen conference when accessing the terminal with uneven brightness.
  • the MCU receives the code stream sent from each terminal, decodes the video, and calculates the average brightness of the multi-picture after the synthesis;
  • the MCU performs an operation of lowering or increasing the brightness of the sub-picture according to the type of the terminal;
  • the MCU adjusts the brightness of the code stream by itself;
  • the MCU commands the terminal to adjust the brightness of the code stream by using a command
  • the user can select a sub-picture that wants to adjust the brightness, and the terminal sends a request to the MCU to adjust the brightness of the selected sub-picture. It is up to the MCU to adjust the brightness by itself, or to adjust the brightness by the code measurement terminal by command;
  • the MCU can be requested to send a single screen to the terminal, and after displaying the single screen, the user can adjust the brightness at the local end according to his own preference;
  • the terminal captures the scene of the site where the local end is located, and then calculates the average brightness of the image field pointed by the camera, and uses the brightness as a reference to adjust the local end by using parameters suitable for the ambient brightness.
  • the overall brightness of the output, this output is a multi-screen containing sub-pictures.
  • FIG. 9 is a block diagram of a conference television system for adjusting a sub-picture brightness scheme according to a preferred embodiment of the present invention.
  • the conference television system includes the following:
  • the MCU 101 as the core device of the multipoint conference television system, is responsible for the access of the terminals 103-108 and the generation of multiple pictures; when adjusting the brightness of the sub-picture, the MCU also undertakes the task of adjusting the terminal of a certain brightness abnormality;
  • the network 102, the terminals 103-108 are connected to the MCU 101 through the network 102, and the terminals 103-108 send single-picture video data to the MCU 101, and receive multi-picture or specified single-picture video data sent by the MCU 101.
  • the video data mentioned here are all passed through a certain a compressed code stream processed by an encoding algorithm;
  • the terminal of the image station type 103 The terminal is not equipped with a camera, and usually only has the decoding capability, and the code stream can be played according to the command of the MCU.
  • the user of the image station can send a brightness adjustment to the MCU through the web page. Request, the MCU can choose to handle it by itself or by the remote encoding end;
  • the recording type terminal 104 such a terminal is not equipped with a camera and does not have a codec capability, and can complete the recording and playing of the code stream according to the command of the MCU, and can participate in the synthesis of the multi-picture as a sub-picture when playing the code stream. Since it is the first recorded conference, there is a situation in which the brightness of the other sub-pictures is inconsistent. If it is calculated that it needs to be adjusted, the MCU adjusts the brightness of the sub-picture by itself;
  • the desktop terminal 105 such a terminal equipped with a camera also has a codec capability, and has a mouse or touch screen for screen drag and drop operations, the user can select a sub-picture that wants to adjust the brightness, and then send a request to the MCU to adjust the brightness.
  • the MCU can choose to handle it by itself or by the remote encoding end according to the situation.
  • Such a terminal can adjust the brightness of the output code stream according to the command of the MCU. It can also adjust the overall brightness of the local output according to the actual situation of ambient light;
  • Mobile terminal 106 such terminal equipped with camera also has codec capability, and has a touch screen for screen drag and drop operations, the user can select the sub-picture that wants to adjust the brightness, and then send a request to the MCU to adjust the brightness, the MCU can According to the situation, whether to choose to handle by itself or by the remote encoding end, such a terminal can adjust the brightness of the output code stream according to the command of the MCU. It can also adjust the overall brightness of the local output according to the actual situation of ambient light;
  • the conventional conference television terminal 107 such a terminal equipment camera also has a codec capability
  • the MCU calculates the overall brightness of the multi-picture, and then compares the brightness of each sub-picture participating in the multi-picture synthesis, and selects the sub-picture that exceeds the threshold according to the situation.
  • the self-processing is still handled by the remote encoding end.
  • Such terminals can adjust the brightness of the output stream according to the commands of the MCU. It can also adjust the overall brightness of the local output according to the actual situation of ambient light;
  • the monitoring terminal 108 such a terminal equipped with a camera generally only has the encoding capability
  • the MCU calculates the overall brightness of the multi-picture, and then compares the brightness of each sub-picture participating in the multi-picture synthesis, and selects the sub-picture that exceeds the threshold according to the situation.
  • the processing is still handled by the remote encoding end.
  • Such terminals can adjust the brightness of the output stream according to the commands of the MCU.
  • FIG. 10 is a flowchart of adjusting the brightness of a sub-screen by an MCU according to a preferred embodiment of the present invention. As shown in FIG. 10, the process includes the following steps:
  • Step S1002 the MCU 101 decodes the code streams of the terminals (103-108) participating in the synthesis of the multi-picture, and performs corresponding scaling on each code stream according to the layout of the multi-picture to form a sub-picture, and calculates the average brightness of each of the sub-pictures after the scaling. ;
  • Step S1004 the MCU 101 places the scaled sub-pictures in a multi-screen designated position according to the layout of the multi-picture, splices into a multi-picture image, and then calculates the average brightness thereof;
  • step S1006 the MCU 101 needs to determine whether the subsequent sub-screen brightness adjustment is initiated by the MCU 101 or whether the brightness of any sub-picture is adjusted by the user through the conference control interface by any value; if the MCU 101 initiates the automatic adjustment, then the process proceeds to step S1014. If the user is selected to adjust, go to step S1008 to execute;
  • step S1008 the user adjusts the brightness of any sub-picture by any value through the conference control interface, and adjusts the brightness of the sub-picture by the set value, which is performed by the remote terminal or the MCU, if the terminal has the coding capability, then Go to step 205 to execute; if the terminal does not have the encoding capability, go to step S1006 to execute;
  • step S1010 according to the value set by the user, the MCU 101 sends a command to adjust the coded output brightness to the remote terminal, and carries the brightness value set by the user, and then the remote terminal sends a code stream whose brightness has been modified;
  • Step S1012 according to the value set by the user, the MCU 101 automatically adjusts the brightness of the output of the code stream according to the brightness value set by the user;
  • Step S1014 the MCU 101 compares the average brightness of the multi-picture and the sub-picture, and compares the luminance difference values of each sub-picture one by one;
  • step S1016 it is determined whether the difference between the average brightness of the multi-picture and the sub-picture exceeds the threshold. If the threshold is not exceeded, the process goes to step S1018; if the threshold is exceeded, the process goes to step S1020a;
  • Step S1018 the brightness of the sub-picture is not adjusted, and the MCU 101 sends a multi-picture
  • step S1020a the difference between the average brightness of the multi-picture and the sub-picture has exceeded the threshold, and the MCU 101 needs to determine whether the sub-picture brightness adjustment is performed by itself or by the remote terminal. If the terminal has the coding capability, the process goes to step S1020c; If the terminal does not have the coding capability, the process proceeds to step S1020b.
  • Step S1020b the MCU 101 automatically adjusts the brightness of the output of the code stream according to the calculated difference in brightness
  • step S1020c the MCU 101 sends a command to adjust the coded output brightness to the remote terminal, and carries the calculated brightness difference value, and then the remote terminal sends a code stream whose brightness has been modified.
  • FIG. 11 is a flowchart of adjusting a brightness of a sub-screen according to a preferred embodiment of the present invention. As shown in FIG. 11, the flow includes the following steps:
  • Step S1102 Select a terminal that can select a sub-picture and perform an operation in multi-picture playing, and adopt different operation processing for different types of terminals:
  • the image station type terminal 103 the user of such a terminal can send a request for brightness adjustment of the single picture monitored by the MCU through the web page, or can select a sub-picture in the multi-picture monitored by it to send a separate brightness adjustment request. ;
  • the desktop terminal 105 such a final user can select a sub-picture that wants to adjust the brightness by using a mouse or a touch screen, and then send a request for adjusting the brightness to the MCU;
  • Mobile terminal 106 the user of such a terminal can select a sub-picture that wants to adjust the brightness through a touch screen, and then send a request to the MCU to adjust the brightness;
  • a conventional conference television terminal 107 in which a user of such a terminal can select a sub-picture whose brightness is to be adjusted by using a mouse in a multi-screen in the conference control interface, and then issue a request for adjusting the brightness to the MCU;
  • step S1104 since there are multiple terminals and the MCU needs to adjust the brightness of the sub-picture, the terminal needs to determine whether the control right is acquired before the operation, and if the control right is acquired, the process goes to step S1106; if not, Go to step S1108 to execute;
  • step S1106 the user adjusts the brightness slider, and the terminal sends a request to the MCU to adjust the sub-picture.
  • the MCU 101 performs steps S1006 to S1012;
  • step S1108 the brightness slider on the operation interface is grayed out, and the user cannot adjust the brightness of the sub-picture at this time.
  • the operability of the conference television is improved, and the requirement that the conference television adjusts the brightness of a certain sub-screen separately can be satisfied without any change in the hardware architecture of the MCU, and the entire multi-screen is improved.
  • Sense of perception is improved.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. Perform the steps shown or described, or separate them into individual integrated circuit modules, or Multiple of these modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
  • the above embodiments and preferred embodiments solve the problem that the screen of the multi-conference picture system has a large luminance deviation and affects the look and feel of the screen, thereby achieving the brightness of a certain sub-picture in the multi-picture. Make adjustments to improve the look and feel of the entire screen.

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Abstract

本发明提供了一种画面亮度调整方法、多点控制单元MCU及终端，其中，该方法包括：多点控制单元MCU确定对多画面中一个或多个子画面进行亮度调整；MCU依据预定亮度调整方式对多画面中的一个或多个子画面的亮度进行调整，其中，预定亮度调整方式包括以下至少之一：由MCU确定亮度调整值的方式、由接收多画面的远端终端确定亮度调整值的方式，通过本发明，解决了相关技术中，多会议画面系统的画面存在亮度偏差大，影响画面观感的问题，进而达到了能够对多画面中的某个子画面的亮度进行调节，提高整个画面观感的效果。

Description

画面亮度调整方法、多点控制单元MCU及终端 技术领域
本发明涉及通信领域，具体而言，涉及一种画面亮度调整方法、多点控制单元MCU及终端。
背景技术
一个基本的多画面会议电视系统一般由至少两台终端设备、传输网络、多点控制单元(Multipoint Controller Unit,简称为MCU)组成。MCU是会议电视系统的核心，在多画面会议中MCU负责将各个终端发送过来的视频进行解码，然后合成为多画面，根据会议的要求再编码送给各个终端。
在融合通讯的大背景下，MCU会接入除传统会议电视终端外的各种具备视频通信能力的设备，例如，各种监控设备、录播设备、智能手机、桌面终端等等。目前在合成多画面时，MCU并不对各个子画面进行亮度调整，有可能出现某个/些子画面和其余子画面亮度存在偏差，即偏亮或偏暗的现象。如果这个终端过来的图像被选做广播源向各个会场广播，那各个会场都将看到偏亮或偏暗的图像，直接影响会议电视的观感。
因此，在相关技术中，多会议画面系统的画面存在亮度偏差大，影响画面观感的问题。
发明内容
本发明提供了一种画面亮度调整方法、多点控制单元MCU及终端，以至少解决在相关技术中，多会议画面系统的画面存在亮度偏差大，影响画面观感的问题。
根据本发明的一个方面，提供了一种画面亮度调整方法，包括：多点控制单元MCU确定对多画面中一个或多个子画面进行亮度调整；所述MCU依据预定亮度调整方式对所述多画面中的一个或多个子画面的亮度进行调整，其中，所述预定亮度调整方式包括以下至少之一：由所述MCU确定亮度调整值的方式、由接收所述多画面的远端终端确定亮度调整值的方式。
优选地，在所述预定亮度调整方式为由所述MCU确定所述亮度调整值的方式的情况下，所述MCU依据所述预定亮度调整方式对所述多画面中的所述一个或多个子 画面的亮度进行调整包括：获取所述多画面的整体平均亮度值和所述多画面中各个子画面的子画面平均亮度值；判断所述整体平均亮度值与所述子画面平均亮度值的差值是否超过预定阈值；在判断结果为是的情况下，将所述差值作为所述亮度调整值对所述子画面的亮度进行调整。
优选地，将所述差值作为所述亮度调整值对所述子画面的亮度进行调整包括：将依据所述差值对所述子画面亮度进行调整后对应的码流发送给所述远端终端，其中，所述码流由所述MCU和/或由所述子画面对应的源编码终端依据所述差值对所述子画面亮度进行调整而得到。
优选地，在所述预定亮度调整方式为由接收所述多画面的远端终端确定所述亮度调整值的方式的情况下，依据所述预定亮度调整方式对所述多画面中的所述一个或多个子画面的亮度进行调整包括：接收到所述远端终端发送的用于对子画面进行亮度调节的亮度调节请求，其中，所述亮度调节请求包括调整亮度的子画面的标识，以及所述亮度调整值；依据所述亮度调整值，对所述标识对应的子画面进行亮度调整。
优选地，依据所述亮度调整值，对所述标识对应的子画面进行亮度调整包括：将依据所述亮度调整值对所述子画面亮度进行调整后对应的码流发送给所述远端终端，其中，所述码流由所述MCU和/或由所述子画面对应的源编码终端依据所述亮度调整值对所述子画面亮度进行调整而得到。
根据本发明的另一方面，提供了一种画面亮度调整方法，包括：接收输入信息，其中，所述输入信息用于指示对多画面中的一个或多个子画面的亮度进行调整；向多点控制单元MCU发送用于对所述一个或多个子画面进行亮度调整的亮度调整请求；接收所述MCU发送的对所述一个或多个子画面进行亮度调整后的码流。
根据本发明的再一方面，提供了一种多点控制单元MCU，包括：确定模块，设置为确定对多画面中一个或多个子画面进行亮度调整；调整模块，设置为依据预定亮度调整方式对所述多画面中的一个或多个子画面的亮度进行调整，其中，所述预定亮度调整方式包括以下至少之一：由所述MCU确定亮度调整值的方式、由接收所述多画面的远端终端确定亮度调整值的方式。
优选地，所述调整模块包括：获取单元，设置为在所述预定亮度调整方式为由所述MCU确定所述亮度调整值的方式的情况下，获取所述多画面的整体平均亮度值和所述多画面中各个子画面的子画面平均亮度值；判断单元，设置为判断所述整体平均亮度值与所述子画面平均亮度值的差值是否超过预定阈值；第一调整单元，设置为在 判断结果为是的情况下，将所述差值作为所述亮度调整值对所述子画面的亮度进行调整。
优选地，所述第一调整单元包括：第一发送子单元，设置为将依据所述差值对所述子画面亮度进行调整后对应的码流发送给所述远端终端，其中，所述码流由所述MCU和/或由所述子画面对应的源编码终端依据所述差值对所述子画面亮度进行调整而得到。
优选地，所述调整模块包括：接收单元，设置为在所述预定亮度调整方式为由接收所述多画面的远端终端确定所述亮度调整值的方式的情况下，接收到所述远端终端发送的用于对子画面进行亮度调节的亮度调节请求，其中，所述亮度调节请求包括调整亮度的子画面的标识，以及所述亮度调整值；第二调整单元，设置为依据所述亮度调整值，对所述标识对应的子画面进行亮度调整。
优选地，所述第二调整单元包括：第二发送子单元，设置为将依据所述亮度调整值对所述子画面亮度进行调整后对应的码流发送给所述远端终端，其中，所述码流由所述MCU和/或由所述子画面对应的源编码终端依据所述亮度调整值对所述子画面亮度进行调整而得到。
根据本发明的还一方面，提供了一种终端，包括：输入装置，设置为接收输入信息，其中，所述输入信息用于指示对多画面中的一个或多个子画面的亮度进行调整；发送装置，设置为向多点控制单元MCU发送用于对所述一个或多个子画面进行亮度调整的亮度调整请求；接收装置，设置为接收所述MCU发送的对所述一个或多个子画面进行亮度调整后的码流。
通过本发明，采用多点控制单元MCU确定对多画面中一个或多个子画面进行亮度调整；所述MCU依据预定亮度调整方式对所述多画面中的一个或多个子画面的亮度进行调整，其中，所述预定亮度调整方式包括以下至少之一：由所述MCU确定亮度调整值的方式、由接收所述多画面的远端终端确定亮度调整值的方式，解决了相关技术中，多会议画面系统的画面存在亮度偏差大，影响画面观感的问题，进而达到了能够对多画面中的某个子画面的亮度进行调节，提高整个画面观感的效果。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明设置为解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据本发明实施例的画面亮度调整方法的流程图；
图2是根据本发明实施例的画面亮度调整方法的流程图；
图3是根据本发明实施例的多点控制单元MCU的结构框图；
图4是根据本发明实施例的多点控制单元MCU中调整模块34的优选结构框图一；
图5是根据本发明实施例的多点控制单元MCU中调整模块34中第一调整单元46的优选结构框图；
图6是根据本发明实施例的多点控制单元MCU中调整模块34的优选结构框图二；
图7是根据本发明实施例的多点控制单元MCU中调整模块34中第二调整单元64的优选结构框图；
图8是根据本发明实施例的终端的结构框图；
图9是根据本发明优选实施方式的调节子画面亮度方案的会议电视系统框图；
图10是本发明本发明优选实施方式的MCU调整子画面亮度的流程图；
图11是根据本发明优选实施方式的终端调整子画面亮度的流程图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
在本实施例中提供了一种画面亮度调整方法，图1是根据本发明实施例的画面亮度调整方法的流程图，如图1所示，该流程包括如下步骤：
步骤S102，多点控制单元MCU确定对多画面中一个或多个子画面进行亮度调整；
步骤S104，MCU依据预定亮度调整方式对多画面中的一个或多个子画面的亮度进行调整，其中，预定亮度调整方式包括以下至少之一：由MCU确定亮度调整值的方式、由接收多画面的远端终端确定亮度调整值的方式。
通过上述步骤，通过对多画面中的一个或多个子画面的亮度进行调整，不仅有效解决了相关技术中多会议画面系统的画面存在亮度偏差大，影响画面观感的问题，进而达到了能够对多画面中的某个子画面的亮度进行调节，提高整个画面观感的效果。
在对多画面中的一个或多个子画面的亮度进行调整时，依据预定亮度调整方式的不同，可以采用不同的调整处理：
例如，在预定亮度调整方式为由MCU确定亮度调整值的方式的情况下，MCU依据预定亮度调整方式对多画面中的一个或多个子画面的亮度进行调整包括：先获取多画面的整体平均亮度值和多画面中各个子画面的子画面平均亮度值；之后，判断整体平均亮度值与子画面平均亮度值的差值是否超过预定阈值；在判断结果为是的情况下，将差值作为亮度调整值对子画面的亮度进行调整。
其中，将差值作为亮度调整值对子画面的亮度进行调整时，可以采用以下处理：将依据差值对子画面亮度进行调整后对应的码流发送给远端终端，其中，码流可以由MCU依据差值对子画面亮度进行调整而得到，也可以由MCU向子画面对应的源编码终端发送子画面亮度调整请求，由该子画面对应的源编码终端依据差值对子画面亮度进行调整而得到。
又例如，在预定亮度调整方式为由接收多画面的远端终端确定亮度调整值的方式的情况下，依据预定亮度调整方式对多画面中的一个或多个子画面的亮度进行调整时，可以采用以下处理：接收到远端终端发送的用于对子画面进行亮度调节的亮度调节请求，其中，亮度调节请求包括调整亮度的子画面的标识，以及亮度调整值；依据亮度调整值，对标识对应的子画面进行亮度调整。
同样，依据亮度调整值，对标识对应的子画面进行亮度调整也可以采用以下处理：将依据亮度调整值对子画面亮度进行调整后对应的码流发送给远端终端，其中，码流可以由MCU依据亮度调整值对子画面亮度进行调整而得到，也可以由MCU向子画面对应的源编码终端发送子画面亮度调整请求，由该子画面对应的源编码终端依据亮度调整值对子画面亮度进行调整而得到。
在本实施例中，还提供了一种画面亮度调整方法，图2是根据本发明实施例的画面亮度调整方法的流程图，如图2所示，该流程包括如下步骤：
步骤S202，接收输入信息，其中，输入信息用于指示对多画面中的一个或多个子画面的亮度进行调整；
步骤S204，向多点控制单元MCU发送用于对一个或多个子画面进行亮度调整的亮度调整请求；
步骤S206，接收MCU发送的对一个或多个子画面进行亮度调整后的码流。
通过上述步骤，通过向MCU发送子画面亮度请求，之后接收MCU发送的对该子画面进行亮度调整后的码流，不仅有效解决了相关技术中多会议画面系统的画面存在亮度偏差大，影响画面观感的问题，进而达到了能够对多画面中的某个子画面的亮度进行调节，提高整个画面观感的效果。
在本实施例中还提供了一种多点控制单元MCU及终端，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图3是根据本发明实施例的多点控制单元MCU的结构框图，如图3所示，该装置包括确定模块32和调整模块34，下面对该多点控制单元MCU进行说明。
确定模块32，设置为确定对多画面中一个或多个子画面进行亮度调整；调整模块34，连接至上述确定模块32，设置为依据预定亮度调整方式对多画面中的一个或多个子画面的亮度进行调整，其中，预定亮度调整方式包括以下至少之一：由MCU确定亮度调整值的方式、由接收多画面的远端终端确定亮度调整值的方式。
图4是根据本发明实施例的多点控制单元MCU中调整模块34的优选结构框图一，如图4所示，该调整模块34包括：获取单元42、判断单元44和第一调整单元46，下面对该调整模块34进行说明。
获取单元42，设置为在预定亮度调整方式为由MCU确定亮度调整值的方式的情况下，获取多画面的整体平均亮度值和多画面中各个子画面的子画面平均亮度值；判断单元44，连接到上述获取单元42，设置为判断整体平均亮度值与子画面平均亮度值的差值是否超过预定阈值；第一调整单元46，连接到上述判断单元44，设置为在判断结果为是的情况下，将差值作为亮度调整值对子画面的亮度进行调整。
图5是根据本发明实施例的多点控制单元MCU中调整模块34中第一调整单元46的优选结构框图，如图5所示，该第一调整单元46包括第一发送子单元52，下面对该第一发送子单元52进行说明。
第一发送子单元52，设置为将依据差值对子画面亮度进行调整后对应的码流发送给远端终端，其中，码流由MCU和/或由子画面对应的源编码终端依据差值对子画面亮度进行调整而得到。
图6是根据本发明实施例的多点控制单元MCU中调整模块34的优选结构框图二，如图6所示，该调整模块34包括接收单元62和第二调整单元64，下面对该调整模块34进行说明。
接收单元62，设置为在预定亮度调整方式为由接收多画面的远端终端确定亮度调整值的方式的情况下，接收到远端终端发送的用于对子画面进行亮度调节的亮度调节请求，其中，亮度调节请求包括调整亮度的子画面的标识，以及亮度调整值；第二调整单元64，连接至接收单元62，设置为依据亮度调整值，对标识对应的子画面进行亮度调整。
图7是根据本发明实施例的多点控制单元MCU中调整模块34中第二调整单元64的优选结构框图，如图7所示，该第二调整单元64包括第二发送子单元72，下面对该第二发送子单元72进行说明。
第二发送子单元72，设置为将依据亮度调整值对子画面亮度进行调整后对应的码流发送给远端终端，其中，码流由MCU和/或由子画面对应的源编码终端依据亮度调整值对子画面亮度进行调整而得到。
图8是根据本发明实施例的终端的结构框图，如图8所示，该终端80包括输入装置82、发送装置84和接收装置86，下面对该终端80进行说明。
输入装置82，设置为接收输入信息，其中，输入信息用于指示对多画面中的一个或多个子画面的亮度进行调整，需要说明的是，该输入装置可以触摸屏，也可可以是鼠标点击的网页页面，当然不限于此，只要是支持鼠标或触摸屏进行屏幕拖拽输入操作功能的设备均可；发送装置84，连接至上述输入装置82，设置为向多点控制单元MCU发送用于对一个或多个子画面进行亮度调整的亮度调整请求；接收装置86，连接至上述发送装置84，设置为接收MCU发送的对一个或多个子画面进行亮度调整后的码流。
针对相关技术中，多会议画面系统的画面存在亮度偏差，影响画面观感的问题，在本实施例中，提供了一种在多画面会议电视中实现子画面亮度调节的方法，通过该方法在不改变现有MCU、终端的硬件以及组网条件的情况下，会议电视用户在接入源亮度不均的终端时，可以实现多画面会议中各个子画面亮度的自动或手动调节。
下面对本发明实施例的技术方案进行说明，该技术方案包括如下对MCU和终端的处理：
1、MCU接收从各个终端发过来的码流，解码视频，算出合成之后多画面的平均亮度；
2、对超过或低于平均亮度达到一定阈值的子画面，MCU根据终端的种类，做出调低或调高子画面亮度的操作；
3、对于不具编解码能力的终端，如录播服务器，MCU自行调节该路码流的亮度；
4、对于具编解码能力的终端，如传统的会议电视终端，MCU通过命令让终端来调节该路码流的亮度；
5、对于支持输出端可调的终端(比如支持鼠标或触屏进行屏幕拖拽操作的终端)，用户可以选中想要调节亮度的子画面，由终端向MCU发出调节选中子画面亮度的请求，由MCU决定自行调整亮度，还是通过命令由编码测终端来调整亮度；
6、对于方案5中的终端，选中子画面之后可以请求MCU给其发单画面，在显示单画面之后，用户可以根据自己的喜好在本端自行调节亮度；
7、对于装备有摄像头的终端而言，终端拍摄本端所处会场的场景，然后计算出摄像头所指像场的平均亮度，并以此亮度作为参照，用适合环境亮度的参数自行调整本端输出的整体亮度，此输出为包含子画面的多画面。
下面结合附图对本发明优选实施方式进行说明。
图9是根据本发明优选实施方式的调节子画面亮度方案的会议电视系统框图，如图9所示，该会议电视系统包括如下：
MCU101，作为多点会议电视系统的核心设备，负责终端103～108会场的接入以及多画面的生成；在调节子画面亮度的时候，MCU还要承担调整某个亮度异常终端的任务；
网络102，终端103～108通过网络102与MCU101相连，终端103～108向MCU101发送单画面视频数据，同时接收MCU101发出的多画面或指定单画面视频数据，这里提到的视频数据都是经过某种编码算法处理的压缩码流；
图像台类型的终端103，此类终端不装备摄像头通常只具备解码能力，可以按照MCU的命令完成码流的播放，图像台的用户可以通过web页面向MCU发出对它所监控单画面进行亮度调节的请求，MCU可根据情况选择自行处理还是由远端编码端来处理；
录播类型的终端104，此类终端不装备摄像头也不具备编解码能力，可以按照MCU的命令完成码流的录制和播放，播放码流时可以作为一幅子画面参与多画面的合成。由于是首先录制的会议，存在和其它子画面亮度不一致的情形，如果计算出来是它需要调整，那么MCU自行调整该路子画面的亮度；
桌面类的终端105，此类终端装备摄像头也具备编解码能力，而且具备支持鼠标或触屏进行屏幕拖拽的操作，用户可以选中想要调节亮度的子画面，然后向MCU发出调节亮度的请求，MCU可根据情况选择自行处理还是由远端编码端来处理，这类终端可以根据MCU的命令来调整输出码流的亮度。它也可以根据周围环境光的实际情况自行调整本端输出的整体亮度；
移动类的终端106，此类终端装备摄像头也具备编解码能力，而且具备触屏进行屏幕拖拽的操作，用户可以选中想要调节亮度的子画面，然后向MCU发出调节亮度的请求，MCU可根据情况选择自行处理还是由远端编码端来处理，这类终端可以根据MCU的命令来调整输出码流的亮度。它也可以根据周围环境光的实际情况自行调整本端输出的整体亮度；
传统的会议电视终端107，此类终端装备摄像头也具备编解码能力，MCU计算出多画面的整体亮度，然后对比参与多画面合成的各子画面的亮度，根据情况对超出阈值的子画面，选择自行处理还是由远端编码端来处理，这类终端可以根据MCU的命令来调整输出码流的亮度。它也可以根据周围环境光的实际情况自行调整本端输出的整体亮度；
监控类的终端108，此类终端装备摄像头一般只具备编码能力，MCU计算出多画面的整体亮度，然后对比参与多画面合成的各子画面的亮度，根据情况对超出阈值的子画面，选择自行处理还是由远端编码端来处理，这类终端可以根据MCU的命令来调整输出码流的亮度。
图10是本发明本发明优选实施方式的MCU调整子画面亮度的流程图，如图10所示，该流程包括如下步骤：
步骤S1002，MCU101解码参与合成多画面的各终端(103～108)的码流，按照多画面的布局，对每路码流进行相应的缩放形成子画面，并计算缩放后子画面各自的平均亮度；
步骤S1004，MCU101按照多画面的布局，把缩放后的子画面放置于多画面指定位置，拼接成一幅多画面图像，然后计算其平均亮度；
步骤S1006，MCU101需要判断随后的子画面亮度调整，是由MCU101发起自动调节还是由用户通过会议控制界面以任意数值自行调整任意子画面的亮度；如果是MCU101发起自动调节，则转至步骤S1014执行；如果选择用户自行调整，则转至步骤S1008执行；
步骤S1008，用户通过会议控制界面以任意数值自行调整任意子画面的亮度，以这个设定值来调整子画面的亮度，是由远端的终端还是MCU来执行，如果终端具备编码能力的话，则转至步骤205执行；如果终端不具备编码能力的话，则转至步骤S1006执行；
步骤S1010，按用户设定的数值，MCU101向远端终端发出调整编码输出亮度的命令，并携带用户设定的亮度数值，然后远端终端发出亮度已经修改的码流；
步骤S1012，按用户设定的数值，MCU101按照用户设定的亮度数值自行调整该路码流输出的亮度；
步骤S1014，MCU101比较多画面和子画面的平均亮度，逐一比较每个子画面的亮度差值；
步骤S1016，判断多画面和子画面平均亮度的差值是否超过阈值，如果不超过阈值，则转至步骤S1018执行；如果超过阈值，则转至步骤S1020a执行；
步骤S1018，子画面的亮度不做调节，MCU101发送多画面；
步骤S1020a，多画面和子画面平均亮度的差值已经超过阈值，MCU101需要判断子画面亮度调整，是自行执行还是由远端终端来执行，如果终端具备编码能力的话，则转至步骤S1020c执行；如果终端不具备编码能力的话，则转至步骤S1020b执行；
步骤S1020b，MCU101按照计算出来的亮度差值自行调整该路码流输出的亮度；
步骤S1020c，MCU101向远端终端发出调整编码输出亮度的命令，并携带计算出来的亮度差值，然后远端终端发出亮度已经修改的码流。
图11是根据本发明优选实施方式的终端调整子画面亮度的流程图，如图11所示，该流程包括如下步骤：
步骤S1102，选择在多画面播放中可以选中子画面并进行操作的终端，对于不同类型的终端采用不同的操作处理：
图像台类型的终端103，此类终端的用户可以通过web页面向MCU发出对它所监控单画面进行亮度调节的请求，也可以选中它所监控的多画面中的子画面发送单独的亮度调节请求；
桌面类的终端105，此类终的用户可以通过鼠标或触屏选中想要调节亮度的子画面，然后向MCU发出调节亮度的请求；
移动类的终端106，此类终端的用户可以通过触屏选中想要调节亮度的子画面，然后向MCU发出调节亮度的请求；
传统的会议电视终端107，此类终端的用户可以在会控界面中的多画面中，用鼠标选中想要调节亮度的子画面，然后向MCU发出调节亮度的请求；
步骤S1104，由于存在多个终端以及MCU都要调整子画面亮度的可能，终端在操作前先需要判断下是否获取了控制权，如果获取了控制权则转至步骤S1106执行；如果没有获取的话则转至步骤S1108执行；
步骤S1106，用户调节亮度滑块，终端向MCU发出调节子画面的请求。MCU101则执行步骤S1006～步骤S1012；
步骤S1108，操作界面上的亮度滑块灰掉，此时用户不能调节子画面的亮度。
通过上述实施例及优选实施方式，使会议电视的可操控性得到提高，在MCU的硬件架构不做任何改变的情况下，可以满足会议电视对某个子画面单独调节亮度的需求，提高整个多画面的观感。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将 它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
如上所述，通过上述实施例及优选实施方式，解决了相关技术中，多会议画面系统的画面存在亮度偏差大，影响画面观感的问题，进而达到了能够对多画面中的某个子画面的亮度进行调节，提高整个画面观感的效果。

Claims (12)

  1. 一种画面亮度调整方法，包括：
    多点控制单元MCU确定对多画面中一个或多个子画面进行亮度调整；
    所述MCU依据预定亮度调整方式对所述多画面中的一个或多个子画面的亮度进行调整，其中，所述预定亮度调整方式包括以下至少之一：由所述MCU确定亮度调整值的方式、由接收所述多画面的远端终端确定亮度调整值的方式。
  2. 根据权利要求1所述的方法，其中，在所述预定亮度调整方式为由所述MCU确定所述亮度调整值的方式的情况下，所述MCU依据所述预定亮度调整方式对所述多画面中的所述一个或多个子画面的亮度进行调整包括：
    获取所述多画面的整体平均亮度值和所述多画面中各个子画面的子画面平均亮度值；
    判断所述整体平均亮度值与所述子画面平均亮度值的差值是否超过预定阈值；
    在判断结果为是的情况下，将所述差值作为所述亮度调整值对所述子画面的亮度进行调整。
  3. 根据权利要求2所述的方法，其中，将所述差值作为所述亮度调整值对所述子画面的亮度进行调整包括：
    将依据所述差值对所述子画面亮度进行调整后对应的码流发送给所述远端终端，其中，所述码流由所述MCU和/或由所述子画面对应的源编码终端依据所述差值对所述子画面亮度进行调整而得到。
  4. 根据权利要求1所述的方法，其中，在所述预定亮度调整方式为由接收所述多画面的远端终端确定所述亮度调整值的方式的情况下，依据所述预定亮度调整方式对所述多画面中的所述一个或多个子画面的亮度进行调整包括：
    接收到所述远端终端发送的用于对子画面进行亮度调节的亮度调节请求，其中，所述亮度调节请求包括调整亮度的子画面的标识，以及所述亮度调整值；
    依据所述亮度调整值，对所述标识对应的子画面进行亮度调整。
  5. 根据权利要求4所述的方法，其中，依据所述亮度调整值，对所述标识对应的子画面进行亮度调整包括：
    将依据所述亮度调整值对所述子画面亮度进行调整后对应的码流发送给所述远端终端，其中，所述码流由所述MCU和/或由所述子画面对应的源编码终端依据所述亮度调整值对所述子画面亮度进行调整而得到。
  6. 一种画面亮度调整方法，包括：
    接收输入信息，其中，所述输入信息用于指示对多画面中的一个或多个子画面的亮度进行调整；
    向多点控制单元MCU发送用于对所述一个或多个子画面进行亮度调整的亮度调整请求；
    接收所述MCU发送的对所述一个或多个子画面进行亮度调整后的码流。
  7. 一种多点控制单元MCU，包括：
    确定模块，设置为确定对多画面中一个或多个子画面进行亮度调整；
    调整模块，设置为依据预定亮度调整方式对所述多画面中的一个或多个子画面的亮度进行调整，其中，所述预定亮度调整方式包括以下至少之一：由所述MCU确定亮度调整值的方式、由接收所述多画面的远端终端确定亮度调整值的方式。
  8. 根据权利要求7所述的装置，其中，所述调整模块包括：
    获取单元，设置为在所述预定亮度调整方式为由所述MCU确定所述亮度调整值的方式的情况下，获取所述多画面的整体平均亮度值和所述多画面中各个子画面的子画面平均亮度值；
    判断单元，设置为判断所述整体平均亮度值与所述子画面平均亮度值的差值是否超过预定阈值；
    第一调整单元，设置为在判断结果为是的情况下，将所述差值作为所述亮度调整值对所述子画面的亮度进行调整。
  9. 根据权利要求8所述的装置，其中，所述第一调整单元包括：
    第一发送子单元，设置为将依据所述差值对所述子画面亮度进行调整后对应的码流发送给所述远端终端，其中，所述码流由所述MCU和/或由所述子画面对应的源编码终端依据所述差值对所述子画面亮度进行调整而得到。
  10. 根据权利要求7所述的装置，其中，所述调整模块包括：
    接收单元，设置为在所述预定亮度调整方式为由接收所述多画面的远端终端确定所述亮度调整值的方式的情况下，接收到所述远端终端发送的设置为对子画面进行亮度调节的亮度调节请求，其中，所述亮度调节请求包括调整亮度的子画面的标识，以及所述亮度调整值；
    第二调整单元，设置为依据所述亮度调整值，对所述标识对应的子画面进行亮度调整。
  11. 根据权利要求10所述的装置，其中，所述第二调整单元包括：
    第二发送子单元，设置为将依据所述亮度调整值对所述子画面亮度进行调整后对应的码流发送给所述远端终端，其中，所述码流由所述MCU和/或由所述子画面对应的源编码终端依据所述亮度调整值对所述子画面亮度进行调整而得到。
  12. 一种终端，包括：
    输入装置，设置为接收输入信息，其中，所述输入信息用于指示对多画面中的一个或多个子画面的亮度进行调整；
    发送装置，设置为向多点控制单元MCU发送用于对所述一个或多个子画面进行亮度调整的亮度调整请求；
    接收装置，设置为接收所述MCU发送的对所述一个或多个子画面进行亮度调整后的码流。
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CN116664198A (zh) * 2023-04-28 2023-08-29 浙江新再灵科技股份有限公司 一种基于物联网的电梯智能屏远程控制管理方法
CN116664198B (zh) * 2023-04-28 2023-12-12 浙江新再灵科技股份有限公司 一种基于物联网的电梯智能屏远程控制管理方法

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