傅里叶变换轮廓术是属于主动式光学三维测量方法中的一种。其测量精度较高，且数据采集速度快。
Fourier transform profilometry is one of the most popular active 3d optical measurement methods, with the advantage of high accuracy and fast acquisition speed.
而傅里叶变换轮廓术作为一种主动光学三维形貌测量技术，因其只需要一幅变形光栅图样来做全场分析的优点，而受到人们广泛关注。
The Fourier transform profilometry as an active optical 3d shape measurement technology has been widely concerned because it need only one deformed grating image to make full-field analysis.
基于短时傅里叶变换形成的三维谱图，采用数字图像处理的方法提取信号的特征。
A Surface EMG signal identification method based on short time Fourier transform is presented in this paper.
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