研究了数字图像处理中两种最常用的算子——离散二维傅立叶变换和离散二维卷积，并给出了它们在RCA上的映射策略和映射过程。
Study two of the most important basic operations in digital image processing: 2-D Discrete Fourier Transform and 2-D Discrete Convolution Transform. Map them on RCA.
该水印算法基于二维离散傅立叶变换(2dft)。
This algorithm is based on two dimensional discrete Fourier transform (2dft).
提出用快速傅立叶变换计算二维模糊控制器的描述函数，并用来判别模糊控制系统的稳定性。
In order to analyze the stability of fuzzy control systems, the description function of fuzzy controller is calculated by using the fast Fourier transformation.
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.
本文研究了基2的时域抽取快速傅立叶变换各阶段的并行性，并据此设计了相应的蝶形和倒序运算核，在GPU上实现了二维fft运算。
This paper studies the parallelism of the different stages of decimation in time radix 2 FFT algorithm, designs the butterfly and scramble kernels and implements 2d FFT on GPU.
方法：采用傅立叶变换红外光谱法获得红外原谱，再结合二维相关技术，分析何首乌药材红外特征。
Methods: Compared the characters of FTIR spectrums, two-dimensional spectrums of Radix Polygoni Multiflori from different sources.
方法：采用傅立叶变换红外光谱法获得红外原谱，再结合二维相关技术，分析何首乌药材红外特征。
Methods: Compared the characters of FTIR spectrums, two-dimensional spectrums of Radix Polygoni Multiflori from different sources.
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