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首页> 外文期刊>Journal of signal processing systems for signal, image, and video technology >On the Rapid Prototyping of a Portable Multi Media Acquisition System for Intelligent Meeting Capture
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On the Rapid Prototyping of a Portable Multi Media Acquisition System for Intelligent Meeting Capture

机译：用于便携式会议采集的便携式多媒体采集系统的快速原型设计

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摘要

Emerging multi-modal signal processing applications require a sustained effort on the part of the developer to realize and deploy an application. A rapid prototyping platform will reduce the effort, cost, and time required to develop and deploy an application. In this paper, a rapid prototyping platform is developed for realizing a multi-modal signal processing application that involve real time interfacing of multi-modal signals both at the input and the output. The platform allows the designer to simulate various applications and produce the required product only after entire testing has been done. A portable intelligent meeting capture system that can be rapidly deployed in smart meeting rooms is implemented on this platform. The setup consists of a microphone array which computes the two-dimensional direction of arrival (DOA). The azimuth and the elevation angles are computed using advanced signal processing algorithms like GCC-PHAT, MUSIC which are implemented on the Real Time Operating System (RT-OS). The DOAs are communicated to a wireless networked camera which steers in real time towards the active speaker. Performance evaluation of the rapidly prototyped system is tested in real time meetings in terms of average error deviations in the DOA. The accuracy of the results indicate further miniaturization of the system. The possibilities of using this platform for developing multi-modal signal processing in general is also described.
机译：新兴的多模式信号处理应用程序需要开发人员持续不断的努力来实现和部署应用程序。快速原型平台将减少开发和部署应用程序所需的工作量，成本和时间。在本文中，开发了一种快速原型平台，用于实现多模态信号处理应用程序，该应用程序涉及输入和输出端多模态信号的实时接口。该平台允许设计人员仅在完成整个测试后才能模拟各种应用并生产所需的产品。在该平台上实现了可以在智能会议室中快速部署的便携式智能会议捕获系统。该设置包含一个麦克风阵列，该阵列计算二维到达方向（DOA）。方位角和仰角是使用高级信号处理算法（如GCC-PHAT，MUSIC）计算的，该算法在实时操作系统（RT-OS）上实现。 DOA被传送到无线网络摄像机，该摄像机实时转向活动扬声器。快速原型系统的性能评估在DOA中的平均误差偏差的实时会议中进行了测试。结果的准确性表明系统进一步小型化。通常还介绍了使用该平台开发多模式信号处理的可能性。

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