clc
clear all
close all
H=imread('E:\final design\me\tire10--残缺一7.jpg','jpg');
I=rgb2gray(H);
I=imresize(I,0.1,'bili');
figure;imshow(I),title('原图');
Y=fft2(I,1024,1024);YY=fftshift(abs(Y));
YY=255*YY/max(YY(
);
figure;imshow(YY);title('傅氏变换图');
a=1:1024;
b=exp(-(a-512).^2/10000);
figure,plot(b,'DisplayName','b','YDataSource','b')
y=b'*b;
figure;imshow(y,[]);
RE=YY.*y;
RE1=ifft2(RE);
figure;imshow(uint8(RE1));
为什么还原出的图像是一片黑呢？