Ask an expert. Trust the answer.

Your academic and career questions answered by verified experts

Matlab inverse FFT from phase/magnitude only

Date: 2022-07-21 11:07:38

So I have this image 'I'. I take F = fft2(I) to get the 2D fourier transform. To reconstruct it, I could go ifft2(F).

The problem is, I need to reconstruct this image from only the a) magnitude, and b) phase components of F. How can I separate these two components of the fourier transform, and then reconstruct the image from each?

I tried the abs() and angle() functions to get magnitude and phase, but the phase one won't reconstruct properly.

Help? 

MOST VIEWED QUESTIONS

Expert Answer:

s: 

You need one matrix with the same magnitude as F and 0 phase, and another with the same phase as F and uniform magnitude. As you noted abs gives you the magnitude. To get the uniform magnitude same phase matrix, you need to use angle to get the phase, and then separate the phase back into real and imaginary parts. 

 

> F_Mag = abs(F); %# has same magnitude as F, 0 phase
> F_Phase = cos(angle(F)) + j*(sin(angle(F)); %# has magnitude 1, same phase as F
> I_Mag = ifft2(F_Mag);
> I_Phase = ifft2(F_Phase);

 

Why Matlabhelpers ?

Looking for reliable MATLAB assignment help? Our expert MATLAB tutors deliver high-quality, easy-to-understand solutions tailored to your academic needs. Whether you're studying at Monash University, the University of Sydney, UNSW, or the University of Melbourne, we provide trusted MATLAB assistance to help you excel. Contact us today for the best MATLAB solutions online and achieve academic success!

Submit Assignment Matlab Projects

MATLAB Assignment Help Services

Personalized Tutoring: Get one-on-one guidance from our MATLAB experts. Whether you're tackling basic concepts or advanced algorithms, we provide clear, step-by-step explanations to help you master MATLAB with confidence.

Assignment Assistance: Struggling with tight deadlines or complex assignments? Our team offers end-to-end support, from problem analysis to code development and debugging, ensuring your assignments meet the highest academic standards.

Project Development: Need expert help with your MATLAB research project? We assist in designing and implementing robust solutions, covering project planning, data collection, coding, simulation, and result analysis.

Coursework Support: Enhance your understanding of MATLAB with our comprehensive coursework assistance. We help you grasp lecture concepts, complete lab exercises, and prepare effectively for exams.

Thesis and Dissertation Guidance: Incorporate MATLAB seamlessly into your thesis or dissertation. Our experts provide support for data analysis, modeling, and simulation, ensuring your research is methodologically sound and impactful.

Contact us on WhatsApp for MATLAB help

Contact us on Telegram for MATLAB solutions