Change of phase, Electrical Engineering

Assignment Help:

Write an m-file "myfourier.m" which takes two images, computes FFT, phase and amplitude and swaps the amplitudes between two images.

function myfourier
im1=imread('cameraman.png');
imd1=double(im1); 
im2=imread('class_f.png');
imd2=double(im2);

FI1=fft2(imd1);
phase1=angle(FI1);
amplitude1=abs(FI1);

FI2=fft2(imd2);
phase2=angle(FI2);
amplitude2=abs(FI2);

NFI1=amplitude1.*exp(i*phase1);
NFI2=amplitude2.*exp(i*phase2);
RI1=ifft2((NFI1));
RI2=ifft2((NFI2));

figure;imshow(real(RI1),[]);
figure;imshow(real(RI2),[]);

NFI1=amplitude1.*exp(i*phase2);
NFI2=amplitude2.*exp(i*phase1);
RI1=ifft2((NFI1));
RI2=ifft2((NFI2));
figure;imshow(real(RI1),[]);
figure;imshow(real(RI2),[]);

What information is encoded in the amplitude and phase?
How the change of phase and amplitude affects the transformed image?


Related Discussions:- Change of phase

What is meant by blanking, a. Explain the following terms: (6) (i) Persi...

a. Explain the following terms: (6) (i) Persistence of vision (ii) Flicker in motion pictures b. What is meant by blanking? What is the need of blanking pulses? Compare th

Illustrate about transfer functions, Q. Illustrate about Transfer Functions...

Q. Illustrate about Transfer Functions? The transfer function is a means by which the dynamic characteristics of devices or systems are described. The transfer function is a ma

14. What is a vector impedance meter? State its application., What is a vec...

What is a vector impedance meter? State its application.

Congestion, It is uneconomic to provide adequate equipment to carry all the...

It is uneconomic to provide adequate equipment to carry all the traffic which could possibly be offered to a telecommunication system. In a telephone exchange it's theoretically po

What is thermal runaway, Q. What is thermal runaway? State one method to pr...

Q. What is thermal runaway? State one method to prevent the same? The effect of changes in leakage current (ICO)  and current gain(b) on the dc bias point is given by the equat

List the addressing modes supported by 8051, List the addressing modes supp...

List the addressing modes supported by 8051. 1. Register addressing  2. Direct  addressing 3. Register indirect addressing 4. Immediate addressing 5.Register addres

Explain the working of frequency division, Explain the Working of Frequency...

Explain the Working of Frequency Division? A frequency divider able to be constructed from J-K flip-flops by taking the output of one cell to the clock input of the next and th

Describe the basic types of number systems, Q. Describe the basic types of ...

Q. Describe the basic types of Number Systems? Probably the largest stumbling block most beginning programmers encounter when attempting to learn assembly language is the commo

Edge detector, Edge detector  Apply the Canny edge detector to image c...

Edge detector  Apply the Canny edge detector to image class.png. To compute Canny edges:      help edge     edge(im,'canny',[thres1 thres2],sigma) (i) Compute edges for

Data copy operations, Data Copy Operations Instructions which  are used...

Data Copy Operations Instructions which  are used  to copy data from  one location to another  location kept in  this category. The location from  which data  is copied  is cal

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd