WO2016070599A1 - 实现画面调整的方法、多点控制单元及计算机存储介质 - Google Patents
实现画面调整的方法、多点控制单元及计算机存储介质 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
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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
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- the MCU further includes an encoding module and a display control module;
- the encoding module is configured to perform encoding processing on the adjusted respective site images to form new video image data
- the display control module is configured to display the new video picture data through a video display Show.
- the MCU further includes a detection module;
- the MCU receives the video picture data of each site, and performs decoding processing on the video picture data of each site to obtain a site picture; Perform pattern recognition processing on the site screen to obtain the average value of the screen ratio of the specified object in each site screen; determine the first difference between the average value of the screen of the specified object in each site screen and the scale value of the first preset site screen. And adjusting the focal length of the video collection device by using the first difference to adjust an average value of the screen ratio of the specified object in each site picture. In this way, the focal length of the video capture device can be adjusted in real time by the MCU, so as to automatically adjust the screen scale value of the objects in each venue screen, thereby improving the visual effect of the entire video screen. In addition, since the picture scale value of the object in each site picture can be automatically controlled, the viewer can determine the actual position and size of the object in each site picture according to the display condition of the video picture.
- FIG. 2 is a schematic flowchart of implementing pattern recognition processing for each site screen according to an embodiment of the present invention
- FIG. 4 is a second schematic flowchart of a method for realizing picture adjustment according to an embodiment of the present invention.
- FIG. 6 is a comparison diagram of effects of scaling processing on each site screen in real time according to an embodiment of the present invention.
- FIG. 8 is a schematic flowchart 5 of a method for implementing screen adjustment according to an embodiment of the present invention.
- FIG. 9 is a schematic structural diagram 1 of a component structure of an MCU according to an embodiment of the present invention.
- FIG. 10 is a schematic structural diagram of a structure of a pattern recognition processing module in an MCU according to an embodiment of the present invention.
- FIG. 11 is a second schematic structural diagram of an MCU according to an embodiment of the present invention.
- FIG. 12 is a schematic structural diagram 3 of a component structure of an MCU according to an embodiment of the present invention.
- FIG. 13 is a schematic structural diagram 4 of an MCU according to an embodiment of the present invention.
- the MCU receives the video picture data of each site, and separately decodes the video picture data of each site to obtain a site picture; performs pattern recognition processing on each site picture to obtain each site.
- the average value of the screen ratio of the specified object in the screen determining a first difference between the average value of the screen ratio of the specified object in each site screen and the ratio value of the first preset site screen; using the first difference to capture the video
- the focal length of the device is adjusted once to adjust the average of the aspect ratio of the specified object in each site screen.
- FIG. 1 is a schematic flowchart 1 of a method for implementing screen adjustment according to an embodiment of the present invention. As shown in FIG. 1 , a method for implementing screen adjustment according to an embodiment of the present invention includes:
- Step S101 Receive video picture data of each site
- the MCU receives video picture data sent by the video collection device of each site.
- the video capture device may include a camera, a video recorder, a camera, a video capture card, and the like.
- the video picture is collected, and the collected video picture is encoded according to a preset encoding mode, and then sent to the MCU.
- Step S102 Perform decoding processing on the video frame data of each site to obtain a site screen.
- Step S103 Perform pattern recognition processing on each site screen to obtain an average value of the screen ratio of the specified object in each site screen;
- the specified object may include any person or any item in the venue, etc.; accordingly, the screen of the specified object may include a picture of any person or any item in the venue, and the like.
- the MCU performs pattern recognition processing on each of the site screens, and obtains a screen average value of the specified object in each site screen, including:
- Step S1031 Perform pattern recognition processing on each site screen to determine screen information of each specified object in each site screen;
- the picture information of each specified object in each site picture determined by the MCU may include the length and width of the picture of each specified object.
- the area of each specified object can be determined by calculating the product of the length and width of the picture information of each specified object by the area formula of the rectangle.
- Step S1033 obtaining an average area of the specified object in each site picture by calculating an arithmetic mean of the areas of all the specified objects in each site picture;
- step S1034 the average value of the screen of the specified object in each site screen is obtained by calculating the ratio of the average area of the specified object in each site screen to the area of the entire site screen.
- Step S104 Determine a first difference between a screen scale average value of the specified object in each site screen and a first preset site screen ratio value, and adjust the focal length of the video collection device according to the first difference value. To adjust the average of the aspect ratio of the specified object in each site screen.
- the first preset site screen scale value option is preset in the MCU, so that the user can select a suitable first preset site screen scale value according to actual needs.
- FIG. 3 is a schematic diagram of a screen scale of a specified object in a plurality of site screens according to an embodiment of the present invention, as shown in FIG. 3 , wherein the ratio of the first preset site screen is 1/4 in FIG. 3( a ).
- the average value of the screen of the specified object in a certain site picture is 1/2 as shown in FIG. 3(b), that is, the average value of the screen of the specified object in each of the site screens and the first preset venue
- the ratio of the screen of the specified object in each site screen is larger than the proportion of the first preset site screen, and the MCU sends the command of the focal length of the remote video capture device to the video capture.
- the first preset site picture ratio value is 1/4 in FIG. 3(a)
- the average value of the screen ratio is 1/9, that is, when the first difference between the average value of the screen of the specified object in each of the site screens and the scale value of the first preset venue screen is negative, then each The proportion of the specified object in the site screen is smaller than the ratio of the first preset site.
- the MCU sends a command to zoom in on the video capture device to the video capture device to control the video capture device to zoom in, thereby dynamically adjusting each site.
- the average of the screen scales of the specified objects is such that the average of the screen scales of the specified objects in each of the venue screens is continuously increased or maximized to the first preset venue screen scale value.
- the focal length adjustment of the video capture device Due to the focal length adjustment of the video capture device
- the limitation of the video itself is such that the average value of the picture ratio of the specified object in each site picture is equal to the first preset site picture ratio value. Therefore, the MCU is for the video capture device.
- One adjustment of the focal length stops until the first difference is expanded.
- the embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to perform the method for realizing screen adjustment according to the first embodiment of the present invention.
- FIG. 4 is a schematic flowchart 2 of a method for implementing screen adjustment according to an embodiment of the present invention. As shown in FIG. 4, a method for implementing screen adjustment according to an embodiment of the present invention includes:
- Step S101 Receive video picture data of each site
- Step S102 Perform decoding processing on the video frame data of each site to obtain a site screen.
- Step S103 Perform pattern recognition processing on each site screen to obtain an average value of the screen ratio of the specified object in each site screen;
- Step S104 Determine a first difference between a screen average value of the specified object in each site screen and a first preset site screen ratio value, and perform an adjustment on the focal length of the video capture device by using the first difference value. To adjust the average value of the screen of the specified object in each site screen;
- Steps S101 to S104 in the second embodiment of the present invention can be referred to the steps S101 to S104 in the first embodiment, respectively.
- Step S201 Perform a comparison on the average value of the screen ratios of the specified objects in each of the adjusted site screens to obtain a comparison result;
- Step S202 When the comparison result is that the average value of the screen ratios of the specified objects in each of the site screens is inconsistent, the minimum value of the screen scale average values of the specified objects in each site screen is selected as the second pre- Set the site screen scale value;
- Step S203 determining a second difference between the average value of the screen of the specified object in each site screen and the ratio of the second preset site screen, and using the second difference to perform the second time on the focal length of the video capture device. Adjust to adjust the average of the aspect ratio of the specified object in each site screen.
- the screen of the specified object in each site screen is illustrated.
- the ratio is greater than the ratio of the second preset site picture, and the MCU sends a command to zoom the video capture device to the video capture device to control the video capture device to zoom in, thereby dynamically adjusting the average value of the specified object in each site image.
- the average value of the picture ratio of the specified object in each site picture is continuously reduced to or closest to the second preset site picture ratio value.
- the screen of the specified object in each site screen is illustrated.
- the ratio is smaller than the ratio of the second preset site screen, and the MCU sends a command to zoom in on the video capture device to the video capture device to control the video capture device to zoom in, thereby dynamically adjusting the average value of the screen of the specified object in each site screen. Therefore, the average value of the picture ratio of the specified object in each site picture is continuously increased to or closest to the second preset site picture ratio value.
- the second adjustment may not necessarily enable the screen of the specified object in each site screen.
- the proportional average value reaches the second preset site screen scale value. Therefore, the MCU adjusts the focal length of the video capture device until the second difference is expanded.
- the embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to perform the method for realizing screen adjustment according to the second embodiment of the present invention.
- FIG. 5 is a schematic flowchart 3 of a method for implementing screen adjustment according to an embodiment of the present invention. As shown in FIG. 5, a method for implementing screen adjustment according to an embodiment of the present invention includes:
- Step S101 Receive video picture data of each site
- Step S102 Perform decoding processing on the video frame data of each site to obtain a site screen.
- Step S103 Perform pattern recognition processing on each site screen to obtain an average value of the screen ratio of the specified object in each site screen;
- Step S104 Determine a first difference between a screen average value of the specified object in each site screen and a first preset site screen ratio value, and perform an adjustment on the focal length of the video capture device by using the first difference value. To adjust the average value of the screen of the specified object in each site screen;
- Steps S101 to S104 in the third embodiment of the present invention can be referred to the steps S101 to S104 in the first embodiment, respectively.
- Step S201 Perform a comparison on the average value of the screen ratios of the specified objects in each of the adjusted site screens to obtain a comparison result;
- Step S202 When the comparison result is that the average value of the screen ratios of the specified objects in each of the site screens is inconsistent, the minimum value of the screen scale average values of the specified objects in each site screen is selected as the second pre- Set the site screen scale value;
- Step S203 determining a second difference between the average value of the screen of the specified object in each site screen and the ratio of the second preset site screen, and using the second difference to perform the second time on the focal length of the video capture device. Adjust to adjust the average value of the screen of the specified object in each site screen;
- Steps S201 to S203 in the third embodiment of the present invention may be correspondingly implemented in the corresponding steps. Steps S201 to S203 in the first example, in order to save space, no further details are provided here.
- Step S301 Perform a second comparison on the average value of the screen ratios of the specified objects in each of the site screens after the second adjustment to obtain a second comparison result;
- Step S302 When the secondary comparison result is that the average value of the screen ratios of the specified objects in each of the site screens is inconsistent, calculate an arithmetic mean value of the average value of the screen proportions of the specified objects in all the site screens, as the third Preset the site screen scale value;
- the secondary comparison result is that the average value of the screen ratios of the specified objects in each of the site screens is inconsistent, it indicates that the MCU adjusts the focal length of the video collection device by step S203, and The average screen ratio of the specified object in each site screen is not reached to the second preset site screen scale value.
- Step S303 determining a third difference between the average value of the screen of the specified object in each of the site screens and the scale value of the third preset site, and using the third difference to scale each site image to Adjust the average of the aspect ratios of the specified objects in each site screen.
- the MCU zooms out the site screen, and enlarges other site screens
- the MCU zooms out the site screen, and enlarges other site screens.
- FIG. 6 is a comparison diagram of effects of scaling processing on each site screen in real time according to an embodiment of the present invention; wherein, as shown in FIG. 6( a ), an effect diagram is displayed for each site screen that has not undergone scaling processing. As shown in FIG. 6(b), an effect map is displayed for each of the site screens subjected to the scaling processing. In this way, the zoom processing is performed on each site screen in real time through step S303, so that each The average screen ratio of the specified object in the site screen reaches the third preset site screen scale value.
- the embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to perform the method for realizing screen adjustment according to Embodiment 3 of the present invention.
- FIG. 7 is a schematic flowchart diagram of a method for implementing screen adjustment according to an embodiment of the present invention. As shown in FIG. 7 , a method for implementing screen adjustment according to an embodiment of the present invention includes:
- Step S101 Receive video picture data of each site
- Step S102 Perform decoding processing on the video frame data of each site to obtain a site screen.
- Step S103 Perform pattern recognition processing on each site screen to obtain an average value of the screen ratio of the specified object in each site screen;
- Step S104 determining a first difference between a screen average value of the specified object in each site screen and a first preset site screen ratio value, and performing a first adjustment on the focal length of the video capture device by using the first search, To adjust the average value of the screen ratio of the specified object in each site screen.
- Steps S101 to S104 in the fourth embodiment of the present invention can be referred to the steps S101 to S104 in the first embodiment, respectively.
- Step S401 Perform encoding processing on each adjusted site screen to form new video frame data.
- the MCU may perform encoding processing on the adjusted respective site pictures according to a preset encoding manner, thereby forming new video picture data.
- Step S402 Display the new video picture data through a video display device.
- the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the fourth embodiment of the present invention.
- the method of implementing screen adjustment is not limited to:
- FIG. 8 is a schematic flowchart of a method for implementing screen adjustment according to an embodiment of the present invention. As shown in FIG. 8 , a method for implementing screen adjustment according to an embodiment of the present invention includes:
- Step S101 Receive video picture data of each site
- Step S102 Perform decoding processing on the video frame data of each site to obtain a site screen.
- Step S103 Perform pattern recognition processing on each site screen to obtain an average value of the screen ratio of the specified object in each site screen;
- Step S104 Determine a first difference between a screen average value of the specified object in each site screen and a first preset site screen ratio value, and perform an adjustment on the focal length of the video capture device by using the first difference value. To adjust the average of the aspect ratio of the specified object in each site screen.
- Steps S101 to S104 in the fifth embodiment of the present invention can be referred to the steps S101 to S104 in the first embodiment, respectively.
- Step S501 When it is detected that there is a movement of the specified object in the site screen, the average value of the screen ratio of the specified object in each site screen is re-adjusted.
- the MCU can detect whether the specified object in the site screen moves in real time or in a timely manner. When it is detected that a certain site screen or a plurality of site screens have a specified object moving, the foregoing steps S101 to S104 can be performed. The method dynamically re-adjusts the average of the aspect ratios of the specified objects in each site screen.
- the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to perform the method for realizing screen adjustment according to the fifth embodiment of the invention.
- FIG. 9 is a schematic structural diagram of a component structure of an MCU according to an embodiment of the present invention.
- an MCU according to an embodiment of the present invention includes: a receiving module 901, a decoding module 902, a pattern recognition processing module 903, and a first adjusting module 904;
- the receiving module 901 is configured to receive video picture data of each site
- the decoding module 902 is configured to perform decoding processing on the video frame data of each site to obtain a site screen.
- the pattern recognition processing module 903 is configured to perform pattern recognition processing on each of the site screens to obtain an average value of the screen ratios of the specified objects in each of the site screens;
- the first adjustment module 904 is configured to determine a first difference between a screen average value of a specified object in each site screen and a first preset site screen ratio value, and compare the video according to the first difference value.
- the focal length of the acquisition device is adjusted once to adjust the average value of the screen of the specified object in each site screen.
- the pattern recognition processing module 903 includes a first determining unit 9031, a second determining unit 9032, a first obtaining unit 9033, and a second obtaining unit 9034;
- the first determining unit 9031 is configured to perform pattern recognition processing on each site screen, and determine screen information of each specified object in each site screen;
- the second determining unit 9032 is configured to determine an area of each specified object according to screen information of each specified object in each site screen;
- the first obtaining unit 9033 is configured to obtain an average area of a specified object in each site screen by calculating an arithmetic mean value of an area of all specified objects in each site screen;
- the second obtaining unit 9034 is configured to obtain a screen average value of a specified object in each site screen by calculating a ratio of an average area of the specified object in each site screen to an entire site screen area.
- the MCU further includes a first comparison module 905, a screening module 906, and a second adjustment module 907; wherein
- the first comparison module 905 is configured to compare the average value of the screen ratios of the specified objects in each of the adjusted site screens to obtain a comparison result
- the screening module 906 is configured to: when the one-time comparison result is that the average value of the screen ratios of the specified objects in each of the site screens is inconsistent, the minimum value of the screen average values of the specified objects in each site screen is filtered out. As the second preset site screen ratio value;
- the second adjustment module 907 is configured to determine a second difference between a screen ratio average value of the specified object in each site screen and a second preset site screen ratio value, and use the second difference value pair video
- the focal length of the acquisition device is adjusted twice to adjust the average value of the screen of the specified object in each site screen.
- the MCU further includes a second comparison module 908, a calculation module 909, and a scaling processing module 910;
- the second comparison module 908 is configured to perform a second comparison on the average value of the screen ratios of the specified objects in each of the second adjusted screens to obtain a second comparison result;
- the calculating module 909 is configured to calculate, when the secondary comparison result is that the average values of the screen proportions of the specified objects in each of the site screens are inconsistent, calculate an arithmetic average of determining a screen average value of the specified objects in all the site screens.
- the value is used as the third preset site screen ratio value;
- the scaling processing module 910 is configured to determine a third difference between a screen average value of a specified object in each site screen and a third preset site screen ratio value, and use the third difference value for each site The screen is scaled to adjust the average of the aspect ratio of the specified object in each site screen.
- the MCU further includes an encoding module 911 and a display control module 912;
- the encoding module 911 is configured to perform encoding processing on the adjusted respective site images to form new video image data.
- the display control module 912 is configured to display the new video picture data through a video display device.
- the MCU further includes a detecting module 913;
- the detecting module 913 is configured to detect whether there is a movement of the specified object in the site screen; when detecting that there is a movement of the specified object in the site screen, re-control the screen of the specified object in each site screen. Adjustment of the average of the ratio.
- each module provided in the embodiment of the present invention, and a unit included in the module may be implemented by a processor in the MCU, or may be implemented by a specific logic circuit.
- embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the computer is readable and stored
- the instructions in the reservoir produce an article of manufacture comprising an instruction device that implements the functions specified in one or more blocks of the flow or in a flow or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
- the MCU receives the video picture data of each site, and performs decoding processing on the video picture data of each site to obtain a site picture; performing pattern recognition processing on each site picture to obtain each site picture.
- the average value of the screen ratio of the specified object in the medium determining a first difference between the average value of the screen ratio of the specified object in each of the site screens and the ratio value of the first preset site screen; using the first difference to the video capture device.
- the focal length is adjusted once to adjust the average of the aspect ratio of the specified object in each site screen. In this way, the focal length of the video capture device can be adjusted in real time by the MCU, so as to automatically adjust the screen scale value of the specified object in each venue screen, thereby improving the visual effect of the entire video screen.
- the picture scale value of the specified object in each site picture can be automatically controlled, the viewer can determine the actual position and size of the specified object in each site picture according to the display condition of the video picture.
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Abstract
一种实现画面调整的方法、MCU及计算机存储介质，所述方法包括：接收每个会场的视频画面数据，分别对所述每个会场的视频画面数据进行解码处理，获得会场画面；对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值；确定每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值；利用所述第一差值对视频采集设备的焦距进行一次调整，以调整每个会场画面中指定对象的画面比例平均值。
Description
本发明涉及多媒体通信技术，尤其涉及一种实现画面调整的方法、多点控制单元(Multi-point Control Unit，MCU)及计算机存储介质。
目前，在视频会议系统中，由于每个会场中对象的数目，位置，会议室布局不同，尤其是视频采集设备如摄像机的布局不同，使得在每个会场所采集到的视频画面千差万别，在每个会场画面中对象的画面比例值无法自动调整；而且，在多个会场画面的显示上，各会场画面中对象的画面比例值之间差异较大，使得整个视频画面的视觉效果较差。另外，对于每个会场画面来讲，每个会场画面中对象并不希望每个会场画面中对象的画面比例值最大，而是希望每个会场画面中对象的画面比例值可以被自动控制，从而可以根据视频画面的显示情况来确定每个会场画面中对象的实际位置和大小。对于视频会议系统中存在的上述情况，视频会议参会者可能需要手动去控制视频采集设备来调整。
然而，在实际的视频会议使用过程中，参会者并不希望人为去控制视频采集设备；或者，由于参会者自身并没有掌握对视频采集设备的控制方法，从而无法实现对每个会场画面中对象的画面比例值的控制。
发明内容
本发明实施例提供一种实现画面调整的方法、MCU及计算机存储介质，能够通过MCU实时调整视频采集设备的焦距，以实现各会场画面中对象的画面比例值的自动调整。
本发明实施例的技术方案是这样实现的：
本发明实施例提供一种实现画面调整的方法，所述方法包括：
接收每个会场的视频画面数据；
分别对所述每个会场的视频画面数据进行解码处理，获得会场画面；
对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值；
确定每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值；
利用所述第一差值对视频采集设备的焦距进行一次调整，以调整每个会场画面中指定对象的画面比例平均值。
上述方案中，所述方法还包括：
对一次调整后的每个会场画面中指定对象的画面比例平均值进行一次比较，得到一次比较结果；
当所述一次比较结果为所述每个会场画面中指定对象的画面比例平均值不一致时，筛选出每个会场画面中指定对象的画面比例平均值中的最小值，作为第二预置会场画面比例值；
确定每个会场画面中指定对象的画面比例平均值与第二预置会场画面比例值之间的第二差值；
利用所述第二差值对视频采集设备的焦距进行二次调整，以调整每个会场画面中指定对象的画面比例平均值。
上述方案中，所述方法还包括：
对二次调整后的每个会场画面中指定对象的画面比例平均值进行二次比较，得到二次比较结果；
当所述二次比较结果为所述每个会场画面中指定对象的画面比例平均值不一致时，计算确定所有各个会场画面中指定对象的画面比例平均值的
算术平均值，作为第三预置会场画面比例值；
确定每个会场画面中指定对象的画面比例平均值与第三预置会场画面比例值之间的第三差值；
利用所述第三差值对各个会场画面进行缩放处理，以调整每个会场画面中指定对象的画面比例平均值。
上述方案中，所述方法还包括：
对调整后的各个会场画面进行编码处理，形成新的视频画面数据；
将所述新的视频画面数据通过视频显示设备显示。
上述方案中，所述方法还包括：当检测有会场画面中存在指定对象发生移动的情况下，重新调整每个会场画面中指定对象的画面比例平均值。
本发明实施例还提供一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行本发明实施例所述实现画面调整的方法。
本发明实施例还提供一种MCU，所述MCU包括接收模块、解码模块、模式识别处理模块、以及第一调整模块；其中，
所述接收模块，配置为接收每个会场的视频画面数据；
所述解码模块，配置为分别对所述每个会场的视频画面数据进行解码处理，获得会场画面；
所述模式识别处理模块，配置为对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值；
所述第一调整模块，配置为确定每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值，并利用所述第一差值对视频采集设备的焦距进行一次调整，以调整每个会场画面中指定对象的画面比例平均值。
上述方案中，所述MCU还包括第一对比模块、筛选模块、以及第二调
整模块；其中，
所述第一对比模块，配置为对一次调整后的所述每个会场画面中指定对象的画面比例平均值进行一次比较，得到一次比较结果；
所述筛选模块，配置为当所述一次比较结果为所述每个会场画面中指定对象的画面比例平均值不一致时，筛选出每个会场画面中指定对象的画面比例平均值中的最小值，作为第二预置会场画面比例值；
所述第二调整模块，配置为确定每个会场画面中指定对象的画面比例平均值与第二预置会场画面比例值之间的第二差值，并利用所述第二差值对视频采集设备的焦距进行二次调整，以调整每个会场画面中指定对象的画面比例平均值。
上述方案中，所述MCU还包括第二对比模块、计算模块、以及缩放处理模块；其中，
所述第二对比模块，配置为对二次调整后的每个会场画面中指定对象的画面比例平均值进行二次比较，得到二次比较结果；
所述计算模块，配置为当所述二次比较结果为所述每个会场画面中指定对象的画面比例平均值不一致时，计算确定所有各个会场画面中指定对象的画面比例平均值的算术平均值，作为第三预置会场画面比例值；
所述缩放处理模块，配置为确定每个会场画面中指定对象的画面比例平均值与第三预置会场画面比例值之间的第三差值，并利用所述第三差值对各个会场画面进行缩放处理，以调整每个会场画面中指定对象的画面比例平均值。
上述方案中，所述MCU还包括编码模块、显示控制模块；其中，
所述编码模块，配置为对调整后的各个会场画面进行编码处理，形成新的视频画面数据；
所述显示控制模块，配置为将所述新的视频画面数据通过视频显示显
示。
上述方案中，所述MCU还包括检测模块；其中，
所述检测模块，配置为检测会场画面中是否存在指定对象发生移动的情况；当检测有会场画面中存在指定对象发生移动的情况下，重新控制对每个会场画面中指定对象的画面比例平均值的调整。
本发明实施例所提供的实现画面调整的方法、MCU及计算机存储介质，MCU接收每个会场的视频画面数据，分别对所述每个会场的视频画面数据进行解码处理，获得会场画面；对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值；确定每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值；利用所述第一差值对视频采集设备的焦距进行一次调整，以调整每个会场画面中指定对象的画面比例平均值。如此，能够通过MCU实时调整视频采集设备的焦距，以实现各会场画面中对象的画面比例值的自动调整，从而提升整个视频画面的视觉效果。另外，由于每个会场画面中对象的画面比例值可以被自动控制，使得观看者可以根据视频画面的显示情况来确定每个会场画面中对象的实际位置和大小。
图1为本发明实施例实现画面调整的方法的流程示意图一；
图2为本发明实施例对每个会场画面进行模式识别处理的实现流程示意图；
图3为本发明实施例若干个会场画面中指定对象的画面比例示意图；
图4为本发明实施例实现画面调整的方法的流程示意图二；
图5为本发明实施例实现画面调整的方法的流程示意图三；
图6为本发明实施例实时对各个会场画面进行缩放处理的效果对比图；
图7为本发明实施例实现画面调整的方法的流程示意图四；
图8为本发明实施例实现画面调整的方法的流程示意图五；
图9为本发明实施例MCU的组成结构示意图一；
图10为本发明实施例MCU中模式识别处理模块的组成结构示意图；
图11为本发明实施例MCU的组成结构示意图二；
图12为本发明实施例MCU的组成结构示意图三；
图13为本发明实施例MCU的组成结构示意图四；
图14为本发明实施例MCU的组成结构示意图五。
在本发明实施例中，MCU接收每个会场的视频画面数据，分别对所述每个会场的视频画面数据进行解码处理，获得会场画面；对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值；确定每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值；利用所述第一差值对视频采集设备的焦距进行一次调整，以调整每个会场画面中指定对象的画面比例平均值。
下面结合附图及具体实施例对本发明再作进一步详细的说明。
实施例一
图1为本发明实施例实现画面调整的方法的流程示意图一，如图1所示，本发明实施例实现画面调整的方法包括：
步骤S101：接收每个会场的视频画面数据；
具体地，MCU接收由每个会场的视频采集设备发送的视频画面数据。其中，所述视频采集设备可以包括摄像机、录像机、摄像头、以及视频采集卡等。
这里，需要说明的是，在视频会议系统中，首先通过视频采集设备采
集视频画面，并根据预设的编码方式对所采集的视频画面进行编码处理后发送至MCU。
步骤S102：分别对所述每个会场的视频画面数据进行解码处理，获得会场画面；
具体地，MCU根据与预设的编码方式对应的解码方式对所述视频画面数据进行解码处理，获得若干个会场画面。
步骤S103：对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值；
这里，所述指定对象可以包括会场中的任何人或任何物品等；相应地，所述指定对象的画面可以包括会场中的任何人或任何物品的画面等。
具体地，如图2所示，MCU对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值包括：
步骤S1031：对每个会场画面进行模式识别处理，确定出每个会场画面中各个指定对象的画面信息；
在本发明实施例中，由于每个指定对象的画面接近于矩形，所以MCU所确定出的每个会场画面中各个指定对象的画面信息可以包括每个指定对象的画面的长和宽。
步骤S1032：根据每个会场画面中各个指定对象的画面信息确定出每个指定对象的面积；
具体地，通过矩形的面积公式计算每个指定对象的画面信息的长和宽两者的乘积，即可确定每个指定对象的面积。
步骤S1033：通过计算每个会场画面中所有指定对象的面积的算术平均值，得到每个会场画面中指定对象的平均面积；
步骤S1034：通过计算每个会场画面中指定对象的平均面积与整个会场画面面积的比值，获得每个会场画面中指定对象的画面比例平均值。
步骤S104：确定每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值，并根据所述第一差值对视频采集设备的焦距进行一次调整，以调整每个会场画面中指定对象的画面比例平均值。
这里，在MCU中预先设置有第一预置会场画面比例值选项，以供用户根据实际需要选择合适的第一预置会场画面比例值。
具体地，图3为本发明实施例若干个会场画面中指定对象的画面比例示意图，如图3所示，其中，图3(a)中表示第一预置会场画面比例值为1/4，当如图3(b)中所表示的某个会场画面中指定对象的画面比例平均值为1/2，即当所述每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值为正数时，则说明每个会场画面中指定对象的画面比例大于第一预置会场画面比例，MCU发送推远视频采集设备的焦距的命令到视频采集设备，以控制视频采集设备推远焦距，从而动态调整每个会场画面中指定对象的画面比例平均值，使得每个会场画面中指定对象的画面比例平均值不断减小到或最大接近所述第一预置会场画面比例值。
相对应地，如图3所示，其中，图3(a)中表示第一预置会场画面比例值为1/4，当如图3(c)中所表示的某个会场画面中指定对象的画面比例平均值为1/9，即当所述每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值为负数时，则说明每个会场画面中指定对象的画面比例小于第一预置会场画面比例，MCU发送拉近视频采集设备的焦距的命令到视频采集设备，以控制视频采集设备拉近焦距，从而动态调整每个会场画面中指定对象的画面比例平均值，使得每个会场画面中指定对象的画面比例平均值不断增大到或最大接近所述第一预置会场画面比例值。
在本发明实施例中，需要说明的是，由于视频采集设备的焦距调整范
围本身的局限性，使得通过所述一次调整，并不一定能够使每个会场画面中指定对象的画面比例平均值达到所述第一预置会场画面比例值，因此，MCU对视频采集设备的焦距的一次调整直到所述第一差值扩大时停止。
本发明实施例还提供一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行本发明实施例一所述实现画面调整的方法。
实施例二
图4为本发明实施例实现画面调整的方法的流程示意图二，如图4所示，本发明实施例实现画面调整的方法包括：
步骤S101：接收每个会场的视频画面数据；
步骤S102：分别对所述每个会场的视频画面数据进行解码处理，获得会场画面；
步骤S103：对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值；
步骤S104：确定每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值，并利用所述第一差值对视频采集设备的焦距进行一次调整，以调整每个会场画面中指定对象的画面比例平均值；
本发明实施例二中的步骤S101至步骤S104可以分别对应地参见实施例一中的步骤S101至步骤S104，为节约篇幅，这里不再赘述。
步骤S201：对一次调整后的每个会场画面中指定对象的画面比例平均值进行一次比较，得到一次比较结果；
步骤S202：当所述一次比较结果为所述每个会场画面中指定对象的画面比例平均值不一致时，筛选出每个会场画面中指定对象的画面比例平均值中的最小值，作为第二预置会场画面比例值；
这里，需要说明的是，当所述一次比较结果为所述每个会场画面中指
定对象的画面比例平均值不一致时，即表明MCU通过步骤S104对视频采集设备的焦距的一次调整，并未使每个会场画面中指定对象的画面比例平均值达到所述第一预置会场画面比例值。
步骤S203：确定每个会场画面中指定对象的画面比例平均值与第二预置会场画面比例值之间的第二差值，并利用所述第二差值对视频采集设备的焦距进行二次调整，以调整每个会场画面中指定对象的画面比例平均值。
具体地，当所述每个会场画面中指定对象的画面比例平均值与第二预置会场画面比例值之间的第二差值为正数时，则说明每个会场画面中指定对象的画面比例大于第二预置会场画面比例，MCU发送推远视频采集设备的焦距的命令到视频采集设备，以控制视频采集设备推远焦距，从而动态调整每个会场画面中指定对象的画面比例平均值，使得每个会场画面中指定对象的画面比例平均值不断减小到或最大接近所述第二预置会场画面比例值。
相对应地，当所述每个会场画面中指定对象的画面比例平均值与第二预置会场画面比例值之间的第二差值为负数时，则说明每个会场画面中指定对象的画面比例小于第二预置会场画面比例，MCU发送拉近视频采集设备的焦距的命令到视频采集设备，以控制视频采集设备拉近焦距，从而动态调整每个会场画面中指定对象的画面比例平均值，使得每个会场画面中指定对象的画面比例平均值不断增大到或最大接近所述第二预置会场画面比例值。
在本发明实施例中，需要说明的是，同样地，由于视频采集设备的焦距调整范围本身的局限性，使得通过所述二次调整，并不一定能够使每个会场画面中指定对象的画面比例平均值达到所述第二预置会场画面比例值，因此，MCU对视频采集设备的焦距的二次调整直到所述第二差值扩大时停止。
本发明实施例还提供一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行本发明实施例二所述实现画面调整的方法。
实施例三
图5为本发明实施例实现画面调整的方法的流程示意图三，如图5所示，本发明实施例实现画面调整的方法包括：
步骤S101：接收每个会场的视频画面数据；
步骤S102：分别对所述每个会场的视频画面数据进行解码处理，获得会场画面；
步骤S103：对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值；
步骤S104：确定每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值，并利用所述第一差值对视频采集设备的焦距进行一次调整，以调整每个会场画面中指定对象的画面比例平均值；
本发明实施例三中的步骤S101至步骤S104可以分别对应地参见实施例一中的步骤S101至步骤S104，为节约篇幅，这里不再赘述。
步骤S201：对一次调整后的每个会场画面中指定对象的画面比例平均值进行一次比较，得到一次比较结果；
步骤S202：当所述一次比较结果为所述每个会场画面中指定对象的画面比例平均值不一致时，筛选出每个会场画面中指定对象的画面比例平均值中的最小值，作为第二预置会场画面比例值；
步骤S203：确定每个会场画面中指定对象的画面比例平均值与第二预置会场画面比例值之间的第二差值，并利用所述第二差值对视频采集设备的焦距进行二次调整，以调整每个会场画面中指定对象的画面比例平均值；
本发明实施例三中的步骤S201至步骤S203可以分别对应地参见实施
例一中的步骤S201至步骤S203，为节约篇幅，这里不再赘述。
步骤S301：对二次调整后的每个会场画面中指定对象的画面比例平均值进行二次比较，得到二次比较结果；
步骤S302：当所述二次比较结果为所述每个会场画面中指定对象的画面比例平均值不一致时，计算确定所有各个会场画面中指定对象的画面比例平均值的算术平均值，作为第三预置会场画面比例值；
这里，需要说明的是，当所述二次比较结果为所述每个会场画面中指定对象的画面比例平均值不一致时，即表明MCU通过步骤S203对视频采集设备的焦距的二次调整，并未使每个会场画面中指定对象的画面比例平均值达到所述第二预置会场画面比例值。
步骤S303：确定每个会场画面中指定对象的画面比例平均值与第三预置会场画面比例值之间的第三差值，并利用所述第三差值对各个会场画面进行缩放处理，以调整每个会场画面中指定对象的画面比例平均值。
具体地，当某个会场画面中指定对象的画面比例平均值与第三预置会场画面比例值之间的第三差值为正数时，则说明所述会场画面中指定对象的画面比例大于第三预置会场画面比例，MCU缩小所述会场画面，同时放大其他会场画面；
相对应地，当某个会场画面中指定对象的画面比例平均值与第三预置会场画面比例值之间的第三差值为负数时，则说明所述会场画面中指定对象的画面比例小于第三预置会场画面比例，MCU缩小所述会场画面，同时放大其他会场画面。
举例来说，图6所示为本发明实施例实时对各个会场画面进行缩放处理的效果对比图；其中，如图6(a)所示，为未经过缩放处理的各个会场画面显示效果图，如图6(b)所示，为经过缩放处理的各个会场画面显示效果图。如此，通过步骤S303实时对各个会场画面进行缩放处理，使得每
个会场画面中指定对象的画面比例平均值达到所述第三预置会场画面比例值。
本发明实施例还提供一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行本发明实施例三所述实现画面调整的方法。
实施例四
图7为本发明实施例实现画面调整的方法的流程示意图四，如图7所示，本发明实施例实现画面调整的方法包括：
步骤S101：接收每个会场的视频画面数据；
步骤S102：分别对所述每个会场的视频画面数据进行解码处理，获得会场画面；
步骤S103：对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值；
步骤S104：确定每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值，并利用所述第一查找对视频采集设备的焦距进行一次调整，以调整每个会场画面中指定对象的画面比例平均值。
本发明实施例四中的步骤S101至步骤S104可以分别对应地参见实施例一中的步骤S101至步骤S104，为节约篇幅，这里不再赘述。
步骤S401：对调整后的各个会场画面进行编码处理，形成新的视频画面数据；
具体地，MCU可以根据预设的编码方式对调整后的各个会场画面进行编码处理，从而形成新的视频画面数据。
步骤S402：将所述新的视频画面数据通过视频显示设备显示。
本发明实施例还提供一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行本发明实施例四
所述实现画面调整的方法。
实施例五
图8为本发明实施例实现画面调整的方法的流程示意图五，如图8所示，本发明实施例实现画面调整的方法包括：
步骤S101：接收每个会场的视频画面数据；
步骤S102：分别对所述每个会场的视频画面数据进行解码处理，获得会场画面；
步骤S103：对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值；
步骤S104：确定每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值，并利用所述第一差值对视频采集设备的焦距进行一次调整，以调整每个会场画面中指定对象的画面比例平均值。
本发明实施例五中的步骤S101至步骤S104可以分别对应地参见实施例一中的步骤S101至步骤S104，为节约篇幅，这里不再赘述。
步骤S501：当检测有会场画面中存在指定对象发生移动的情况下，重新调整每个会场画面中指定对象的画面比例平均值。
具体地，MCU可以实时或定时检测会场画面中的指定对象是否发生移动，当检测有某一个会场画面或多个会场画面中存在指定对象发生移动的情况下，可以通过前述步骤S101至步骤S104的方法重新动态调整每个会场画面中指定对象的画面比例平均值。
本发明实施例还提供一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行本发明实施例五所述实现画面调整的方法。
实施例六
图9为本发明实施例MCU的组成结构示意图一，如图9所示，本发明实施例MCU包括：接收模块901、解码模块902、模式识别处理模块903、以及第一调整模块904；其中，
所述接收模块901，配置为接收每个会场的视频画面数据；
所述解码模块902，配置为分别对所述每个会场的视频画面数据进行解码处理，获得会场画面；
所述模式识别处理模块903，配置为对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值；
所述第一调整模块904，配置为确定每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值，并根据所述第一差值对视频采集设备的焦距进行一次调整，以调整每个会场画面中指定对象的画面比例平均值。
在本发明实施例中，如图10所示，所述模式识别处理模块903包括第一确定单元9031、第二确定单元9032、第一获取单元9033、以及第二获取单元9034；其中，
所述第一确定单元9031，配置为对每个会场画面进行模式识别处理，确定出每个会场画面中各个指定对象的画面信息；
所述第二确定单元9032，配置为根据每个会场画面中各个指定对象的画面信息确定出每个指定对象的面积；
所述第一获取单元9033，配置为通过计算每个会场画面中所有指定对象的面积的算术平均值，得到每个会场画面中指定对象的平均面积；
所述第二获取单元9034，配置为通过计算每个会场画面中指定对象的平均面积与整个会场画面面积的比值，获得每个会场画面中指定对象的画面比例平均值。
在一实施例中，如图11所示，所述MCU还包括第一对比模块905、
筛选模块906、以及第二调整模块907；其中，
所述第一对比模块905，配置为对一次调整后的每个会场画面中指定对象的画面比例平均值进行一次比较，得到一次比较结果；
所述筛选模块906，配置为当所述一次比较结果为所述每个会场画面中指定对象的画面比例平均值不一致时，筛选出每个会场画面中指定对象的画面比例平均值中的最小值，作为第二预置会场画面比例值；
所述第二调整模块907，配置为确定每个会场画面中指定对象的画面比例平均值与第二预置会场画面比例值之间的第二差值，并利用所述第二差值对视频采集设备的焦距进行二次调整，以调整每个会场画面中指定对象的画面比例平均值。
在一实施例中，如图12所示，所述MCU还包括第二对比模块908、计算模块909、以及缩放处理模块910；其中，
所述第二对比模块908，配置为对二次调整后的每个会场画面中指定对象的画面比例平均值进行二次比较，得到二次比较结果；
所述计算模块909，配置为当所述二次比较结果为所述每个会场画面中指定对象的画面比例平均值不一致时，计算确定所有各个会场画面中指定对象的画面比例平均值的算术平均值，作为第三预置会场画面比例值；
所述缩放处理模块910，配置为确定每个会场画面中指定对象的画面比例平均值与第三预置会场画面比例值之间的第三差值，并利用所述第三差值对各个会场画面进行缩放处理，以调整每个会场画面中指定对象的画面比例平均值。
在一实施例中，如图13所示，所述MCU还包括编码模块911、显示控制模块912；其中，
所述编码模块911，配置为对调整后的各个会场画面进行编码处理，形成新的视频画面数据；
所述显示控制模块912，配置为将所述新的视频画面数据通过视频显示设备显示。
在一实施例中，如图14所示，所述MCU还包括检测模块913；其中，
所述检测模块913，配置为检测会场画面中是否存在指定对象发生移动的情况；当检测有会场画面中存在指定对象发生移动的情况下，重新控制前述模块对每个会场画面中指定对象的画面比例平均值的调整。
在实际应用中，本发明实施例中提供的各模块，及模块各自包括的单元都可以通过MCU中的处理器实现，也可以通过具体的逻辑电路实现。
本发明实施例所记载的技术方案之间，在不冲突的情况下，可以任意组合。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存
储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
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。
本发明实施例所述MCU接收每个会场的视频画面数据，分别对所述每个会场的视频画面数据进行解码处理，获得会场画面；对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值；确定每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值；利用所述第一差值对视频采集设备的焦距进行一次调整，以调整每个会场画面中指定对象的画面比例平均值。如此，能够通过MCU实时调整视频采集设备的焦距，以实现各会场画面中指定对象的画面比例值的自动调整，从而提升整个视频画面的视觉效果。另外，由于每个会场画面中指定对象的画面比例值可以被自动控制，使得观看者可以根据视频画面的显示情况来确定每个会场画面中指定对象的实际位置和大小。
Claims (11)
- 一种实现画面调整的方法，所述方法包括：接收每个会场的视频画面数据；分别对所述每个会场的视频画面数据进行解码处理，获得会场画面；对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值；确定每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值；利用所述第一差值对视频采集设备的焦距进行一次调整，以调整每个会场画面中指定对象的画面比例平均值。
- 根据权利要求1所述的方法，其中，所述方法还包括：对一次调整后的每个会场画面中指定对象的画面比例平均值进行一次比较，得到一次比较结果；当所述一次比较结果为所述每个会场画面中指定对象的画面比例平均值不一致时，筛选出每个会场画面中指定对象的画面比例平均值中的最小值，作为第二预置会场画面比例值；确定每个会场画面中指定对象的画面比例平均值与第二预置会场画面比例值之间的第二差值；利用所述第二差值对视频采集设备的焦距进行二次调整，以调整每个会场画面中指定对象的画面比例平均值。
- 根据权利要求2所述的方法，其中，所述方法还包括：对二次调整后的每个会场画面中指定对象的画面比例平均值进行二次比较，得到二次比较结果；当所述二次比较结果为所述每个会场画面中指定对象的画面比例平均值不一致时，计算确定所有各个会场画面中指定对象的画面比例平均值的 算术平均值，作为第三预置会场画面比例值；确定每个会场画面中指定对象的画面比例平均值与第三预置会场画面比例值之间的第三差值；利用所述第三差值对各个会场画面进行缩放处理，以调整每个会场画面中指定对象的画面比例平均值。
- 根据权利要求1至3任一项所述的方法，其中，所述方法还包括：对调整后的各个会场画面进行编码处理，形成新的视频画面数据；将所述新的视频画面数据通过视频显示设备显示。
- 根据权利要求1至3任一项所述的方法，其中，所述方法还包括：当检测有会场画面中存在指定对象发生移动的情况下，重新调整每个会场画面中指定对象的画面比例平均值。
- 一种多点控制单元MCU，所述MCU包括接收模块、解码模块、模式识别处理模块、以及第一调整模块；所述接收模块，配置为接收每个会场的视频画面数据；所述解码模块，配置为分别对所述每个会场的视频画面数据进行解码处理，获得会场画面；所述模式识别处理模块，配置为对每个会场画面进行模式识别处理，获得每个会场画面中指定对象的画面比例平均值；所述第一调整模块，配置为确定每个会场画面中指定对象的画面比例平均值与第一预置会场画面比例值之间的第一差值，并利用所述第一差值对视频采集设备的焦距进行一次调整，以调整每个会场画面中指定对象的画面比例平均值。
- 根据权利要求6所述的MCU，其中，所述MCU还包括第一对比模块、筛选模块、以及第二调整模块；所述第一对比模块，配置为对一次调整后的每个会场画面中指定对象 的画面比例平均值进行一次比较，得到一次比较结果；所述筛选模块，配置为当所述一次比较结果为所述每个会场画面中指定对象的画面比例平均值不一致时，筛选出每个会场画面中指定对象的画面比例平均值中的最小值，作为第二预置会场画面比例值；所述第二调整模块，配置为确定每个会场画面中指定对象的画面比例平均值与第二预置会场画面比例值之间的第二差值，并利用所述第二差值对视频采集设备的焦距进行二次调整，以调整每个会场画面中指定对象的画面比例平均值。
- 根据权利要求7所述的MCU，其中，所述MCU还包括第二对比模块、计算模块、以及缩放处理模块；所述第二对比模块，配置为对二次调整后的每个会场画面中指定对象的画面比例平均值进行二次比较，得到二次比较结果；所述计算模块，配置为当所述二次比较结果为所述每个会场画面中指定对象的画面比例平均值不一致时，计算确定所有各个会场画面中指定对象的画面比例平均值的算术平均值，作为第三预置会场画面比例值；所述缩放处理模块，配置为确定每个会场画面中指定对象的画面比例平均值与第三预置会场画面比例值之间的第三差值，并利用所述第三差值对各个会场画面进行缩放处理，以调整每个会场画面中指定对象的画面比例平均值。
- 根据权利要求6至8任一项所述的MCU，其中，所述MCU还包括编码模块、显示控制模块；所述编码模块，配置为对调整后的各个会场画面进行编码处理，形成新的视频画面数据；所述显示控制模块，配置为将所述新的视频画面数据通过视频显示设备显示。
- 根据权利要求6至8任一项所述的MCU，其中，所述MCU还包括检测模块；所述检测模块，配置为检测会场画面中是否存在指定对象发生移动的情况；当检测有会场画面中存在指定对象发生移动的情况下，重新控制对每个会场画面中指定对象的画面比例平均值的调整。
- 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行权利要求1至5任一项所述的实现画面调整的方法。
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| CN101404726A (zh) * | 2008-10-20 | 2009-04-08 | 深圳华为通信技术有限公司 | 一种远端摄像机的控制方法、系统和装置 |
| US20110085017A1 (en) * | 2009-10-09 | 2011-04-14 | Robinson Ian N | Video Conference |
| CN101742222A (zh) * | 2009-12-30 | 2010-06-16 | 华为终端有限公司 | 摄像头位置的操作方法及视频会议终端 |
| CN102300043A (zh) * | 2010-06-23 | 2011-12-28 | 中兴通讯股份有限公司 | 调整远程呈现会议系统的会场摄像头的方法及会议终端 |
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| CN105592288B (zh) | 2021-01-26 |
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