Hello George Paul,
I understand that you want to perform 2D FFT (Fast Fourier Transformation) on a RGB image in Simulink and to visualise frequency domain output in Simulink.
To perform 1D FFT in Simulink, the FFT block (as mentioned in documentation [2]) in the library DSP System Toolbox / Transforms can be used.
To perform 2D FFT in Simulink, the same FFT block can be used 2 times by applying 1D FFT on the rows and columns as mentioned in documentation [1]. An alternate way is to use a MATLAB function block which calls fft2 as mentioned in documentation [1].
To visualise frequency domain output in Simulink, the Spectrum Analyzer block can be used as mentioned in documentation [3].
Feel free to refer to the following documentation for further understanding:
- https://www.mathworks.com/help/matlab/ref/fft2.html
- https://www.mathworks.com/help/dsp/ref/fft.html
- https://www.mathworks.com/help/simulink/slref/spectrumanalyzerblock.html
Hope it helps!
