How to save the FFt results of an image in an array?

2 次查看（过去 30 天）
Nour Sd
Nour Sd 2018-11-16
评论： madhan ravi 2018-11-16
Hello,
Please can you help me saving the result of the Fast Fourier Transform of an image so I can reuse it to draw the bessel function?
My code below, gives this error :
In an assignment A(:) = B, the number of elements in A and B must be the same.
Error in essai (line 13)
stored_values(ii) = Y;
clc;
close all;
imagefiles = dir('*.jpg');
nfiles = length(imagefiles); % Number of image files found
stored_values = zeros(nfiles,4); % Preallocate the array for saving the values
for ii=1:nfiles
currentfilename = imagefiles(ii).name;
I = imread(currentfilename);
myimage = rgb2gray(I); % Convert image to gray
Y = fft2(double(myimage))
stored_values(ii) = Y;
imagesc(abs(fftshift(Y)));
end
And if I change this line
stored_values(ii) = Y;
to this
stored_values(ii,1) = Y;
it gives this error:
Assignment has more non-singleton rhs dimensions than non-singleton subscripts
Error in essai (line 13)
stored_values(ii,1) = Y;
Please can anyone correct it for me?
Thank you.

请先登录，再回答此问题。

采纳的回答

madhan ravi
madhan ravi 2018-11-16
编辑：madhan ravi 2018-11-16
stored_values = cell(1,nfiles); %before loop
stored_values{ii}=Y; %inside loop
celldisp(stored_values) %outside loop
[stored_values{:}] %double values
  6 个评论
显示 4更早的评论

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Bessel functions 的更多信息

标签

产品


版本

R2017a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by