Two-dimensional FFT_IFFT image processing, and fas
2016-08-23
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FFT is a fast algorithm for the discrete Fourier transform, a signal can be transformed
To the frequency domain. Some signals in the time domain is difficult to see what features, but as
If, after conversion to the frequency domain, it is easy to see the feature. That's a lot of signals
Analysis using FFT transform reasons. Further, FFT spectrum of a signal may be
Extracted, in which the spectral analysis is often used.
While many people know what the FFT is, What can you do, how to
Do, but do not know is that even after the results of FFT mean, how the decision to use
How many points do FFT.
To share with you. . . .
FFT is a fast algorithm for the discrete Fourier transform, a signal can be transformed
To the frequency domain. Some signals in the time domain is difficult to see what features, but as
If, after conversion to the frequency domain, it is easy to see the feature. That's a lot of signals
Analysis using FFT transform reasons. Further, FFT spectrum of a signal may be
Extracted, in which the spectral analysis is often used.
While many people know what the FFT is, What can you do, how to
Do, but do not know is that even after the results of FFT mean, how the decision to use
How many points do FFT.
c++
图像处理
变换
快速
二维
傅里叶
fftifft
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