定点基2-FFT及执行时间测试代码。可以手工输入数据，也可以从文件读入。 文档中含有测试说明和代码。-sentinel-2-FFT execution time and test code. Can manually input data, but also from the file into. Documents containing descr iptions and test code.

快速傅里叶变换（FFT）。允许输入任意长度（满足等于2的N次幂即可）。-Implementation of the Fast Fourier Transformer.

其中的函数FFT用于计算一组数据的快速傅里叶变换，输入参数为一个数组，元素个数为2的n次方。程序包含FFT排序算法和蝶形运算。-Function which Fast Fourier Transform FFT calculation for a set of data, the input parameters for an array of n number of elements in a power of 2. Program includes sorting algorithms an

This a Visual Studio project which FFT convert images to power spectral images. This program requires opencv 2.x.-This is a Visual Studio project which FFT convert images to power spectral images. This program requires opencv 2.x.