This paper introduces an analyzing method for evaluating the color even degree on the tile surface in two dimensional frequency domain, that is by adopting two dimensional discrete fourier transform.
本文对采集的瓷砖图像采用二维离散傅利叶变换对瓷砖颜色分布均匀度在二维频域范围内进行分析，提出了一种瓷砖颜色匀度的评判方法。
A two-dimensional phase unwrapping approach based on two-dimensional windowed Fourier transform (WFT) is proposed.
提出了一种基于二维短时傅里叶变换的干涉相位图解缠方法。
This algorithm is based on two dimensional discrete Fourier transform (2dft).
该水印算法基于二维离散傅立叶变换(2dft)。
The spatio-temporally modulated imaging Fourier transform spectrometers obtain two-dimensional spatial images modulated by interference pattern, and are sensitive to the change of attitude.
时-空联合调制型干涉成像光谱仪获取的像面干涉图是带有干涉条纹的二维空间图像，具有对姿态变化敏感的特点。
The two-dimensional fast Fourier transform (2D-FFT) method has been used to analyze the ultrasonic signals where different wave modes overlaid in the time domain.
利用二维快速傅立叶变换的时频分析方法，对有限元计算得到的时域信号进行了分离，得到了各个模式超声波的相速度色散曲线。
The two-dimensional fast Fourier transform (2D-FFT) method has been used to analyze the ultrasonic signals where different wave modes overlaid in the time domain.
利用二维快速傅立叶变换的时频分析方法，对有限元计算得到的时域信号进行了分离，得到了各个模式超声波的相速度色散曲线。
应用推荐