Unable to write images of type 'double'

Question

ramdas patil 2014-6-6

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/132673-unable-to-write-images-of-type-double

回答： Image Analyst 2014-6-6

I have obtained Fourier spectrum of an image and want to save the result image into the folder as specified in my code.

but as result image is of type "double",i am unable save it.i am getting blank image at the given folder. what should i do?

Here is my code

      clc;
      clear all;
      close all;
      i=imread('D:\pendrive\test1.jpg');
      i=rgb2gray(i);
      subplot(2,2,1),imshow(i);title('Test Image');
      f=fftn(i);
      magnitude=abs(f);
      phase=angle(f);
      f1=log(1+fftshift(f));
      subplot(2,2,2),imshow(f1,[]);title('Fourier spectrum');
      a=strcat('C:\Users\Public\Pictures\Sample Pictures\results\Fourier spectrum\','.jpg');
      imwrite(f1,a);