利用非高速摄像机测量转速的方法研究

Researching of the Method of Measuring Angle Velocity Based on Non-High Video Camera

对有些测量对象根本无法安装测量设备或者设备的主人不允许安装测量设备,比如测量乒乓球的旋转速度等情况;因此需要引进一种新的转速测量方法,即基于视频的角速度测量方法;本研究的目标就是利用两台价格低廉的普通摄像机取代价格昂贵的高速专业摄像机;通过两台低速摄像机同时对高速旋转对象进行采样,两台低速摄影机分别设置不同的采样频率;根据获得的采样图像,发现两组不同采样数据之间关系,建立相应的数学方程,计算出高速旋转对象的旋转角速度;通过实验,利用两台最高30帧/秒速度的摄像机,测量转速为100转/秒左右旋转对象,取得相当准确的精度的,因此,证明了该方法具有很好的实际应用价值。

Some measurements devices can not be installed on the object or the owner of the object does not allowed to do so.Such as measuring the rotation speed of table tennis and so on.So it is necessary to introduce a new method to measure rotation speed.It is the rotation speed measurement based on the video.The goal of our research is to use two common inexpensive common cameras to replace the expensive professional cameras to execute the same function.We used two low-speed cameras to sample the high-speed rotating objects in parallel way.We Set the two cameras with different sampling frequency.According the image obtained by sampling,to find the relation between the two group different sampling data.Trying to create the corresponding mathematical model and calculating the rotation speed of high-speed rotating objects.Confirmed by experiment,this method is very effective that using 30 frames/second speed of the camera to measure the object that rotate at 100 round/sec.Therefore,this application of this method is quite a value.