为了满足电网公司日益增长的对视频会议质效的要求,本文针对目前视频会议系统无法提供主、分会场独立观看轮训画面,会议召开期间处理分会场异常情况会导致轮询停止,对参会人员观看轮询画面产生影响的问题,对现有视频会议系统该现象发生...为了满足电网公司日益增长的对视频会议质效的要求,本文针对目前视频会议系统无法提供主、分会场独立观看轮训画面,会议召开期间处理分会场异常情况会导致轮询停止,对参会人员观看轮询画面产生影响的问题,对现有视频会议系统该现象发生的情况进行调研,得出影响该问题处理的关键原因是多点控制器(Multipoint Control Unit,MCU)缺少单独输出合成视频源的配套装置。为此,提出一种视频源合成器设计。该合成器可以有效解决MCU缺少单独输出合成视频源的配套装置的问题,使同时进行会场轮询和故障实时处置成为现实,提升了视频会议保障水平。展开更多
The paper presents a framework for developing a variety of video transition effects. The framework is designed to deal with the problem of inefficiency for programmers to generate more and more diversified video trans...The paper presents a framework for developing a variety of video transition effects. The framework is designed to deal with the problem of inefficiency for programmers to generate more and more diversified video transition, which is caused by excessive coupling between the sub-modules of the system. So the framework is designed to be modular, flexible and extensible. Based on the analysis of common features of different effects, the implementation of video transition effect is divided into 4 sub-odules, each of which can be designed and developed independently. Furthermore, these sub-modules can be easily sub- stituted, modified and reused. We present a formal description of our framework, and give typical study cases to show the extensive utility of the framework.展开更多
文摘为了满足电网公司日益增长的对视频会议质效的要求,本文针对目前视频会议系统无法提供主、分会场独立观看轮训画面,会议召开期间处理分会场异常情况会导致轮询停止,对参会人员观看轮询画面产生影响的问题,对现有视频会议系统该现象发生的情况进行调研,得出影响该问题处理的关键原因是多点控制器(Multipoint Control Unit,MCU)缺少单独输出合成视频源的配套装置。为此,提出一种视频源合成器设计。该合成器可以有效解决MCU缺少单独输出合成视频源的配套装置的问题,使同时进行会场轮询和故障实时处置成为现实,提升了视频会议保障水平。
文摘The paper presents a framework for developing a variety of video transition effects. The framework is designed to deal with the problem of inefficiency for programmers to generate more and more diversified video transition, which is caused by excessive coupling between the sub-modules of the system. So the framework is designed to be modular, flexible and extensible. Based on the analysis of common features of different effects, the implementation of video transition effect is divided into 4 sub-odules, each of which can be designed and developed independently. Furthermore, these sub-modules can be easily sub- stituted, modified and reused. We present a formal description of our framework, and give typical study cases to show the extensive utility of the framework.
