摘要
视频安全监控已经成为当今社会研究和发展的热点,而传统的安全监控由于摄像头不能自主转动而存在监控"盲区"。为了弥补这一局限,并考虑到异常情况发生时往往伴随着相应的声音,可以给摄像头加上听觉功能,使其能够自动跟踪声源。提出了一种基于LabVIEW的声学相控阵视频跟踪系统。该系统通过4通道同步数据采集卡采集麦克风传感器阵列数据、在工控机上的LabVIEW平台上进行数字相控阵波束形成运算得到目标方位信息,然后控制视频监控云台旋转到目标方位,从而实现对目标的动态跟踪。该系统具有良好的人机交互界面,易于维护和扩展。系统平台实验验证了该系统的性能。
The video-based security monitoring system has become the focus of social research and development. Nevertheless, the traditional monitoring system has the blind area because the camera cannot rotate automatically. To compensate for the limitation, and taking into account the abnormal situation often occurs accompanied by a corresponding sound, the auditory function can be coupled to the camera so that it can automatically track the sound source. This paper proposes a I.abVIEW-based phased array acoustic video tracking system. The microphone array data which is collected by a four-channel synchronous data acquisition card is sent to the LabVIEW platform to carry out the digital phased array beamforming operations. The PTZ camera which is under control of the target azimuth information obtained from the operations rotates to the target orientation to achieve the dynamic monitoring of the target. The system has the good human-computer interface and is easily maintained and expanded. The performance of the system has been tested by the platform experiment.
出处
《电子测量技术》
2013年第4期11-14,共4页
Electronic Measurement Technology
