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problem is that i am not getting the original image, the image after performing ifft is black with white dot on it.
my input image is Leena
and the output is attached here
yes i have perform IFFT and put the pixels back into the right position in the output image in last part, i have calculate the IFFT of the block and allocate its position and running the loop for 4096 times i can get the original image%calculation of IFFT
for K=1:r/bs
for L=1:c/bs...
till now i have done this
i am getting a black image after performing IFFT
clc;
clear all;
close all;
I_color=imread('lena.jpg');
I=double(rgb2gray(I_color));
[r,c,p]= size(I);
subplot(2,2,1);
imshow(I_color);
title('Original Image');
bs=8;
nob=r/bs;
xx=0;
% creating cos and sine matrix...
thanks for reply
i have tried using blockproc but in my algorithm i have to perform various operation one after another
thus i am unable to build 'fun' for blockproc.
kindly help me out to complete the code
sir I am a research scholar, and currently working on lossy image compression using FFT.
The proposed FFT/IFFT algorithm is also folIows:
Read the input file from the host system.
Evaluate the (8x8) Cosine and Sine matrix using Equations.
C(u+l, x+l) = cos(pi / 4)*(u* x))
S(u + 1, x + 1)...
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