Gaussian High Pass Filter
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Hello, I try to apply Gaussian High Pass Filter function
a=imread('img'); figure(1) imshow(a) [m n]=size(a); f_transform=fft2(a); f_shift=fftshift(f_transform); p=m/2; q=n/2; d0=70; for i=1:m for j=1:n distance=sqrt((i-p)^2+(j-q)^2); low_filter(i,j)=exp(-(distance)^2/(2*(d0^2))); end end filter_apply=f_shift.*low_filter; image_orignal=ifftshift(filter_apply); image_filter_apply=abs(ifft2(image_orignal)); figure(2) imshow(image_filter_apply,[])
but I got this error
??? Error using ==> times Matrix dimensions must agree.
can someone help me
1 个评论
islam habeeb
2015-2-11
Implement non Gaussian for IPCA in Matlab | Crunch Modo
采纳的回答
Youssef Khmou
2013-7-27
编辑：Youssef Khmou
2013-7-27
hi lina,
I tried your program and it works fine, replace the first command with :
a=im2double(imread('circuit.tif'));
I think the error you get is due to the nature of the sample you use, maybe its RGB image, if so you need to change it to grayscale image or process each channel individually, try this as first attempt :
a=im2double(rgb2gray(imread('img')));
3 个评论
lina
2013-7-27
elfrida
2013-8-13
if format of my picture is .jpg, can I use this program? or I must convert to .tif??? thankyou
Image Analyst
2013-8-13
No, that has nothing to do with it. No matter what format the image is stored in on disk, once imread gets done with it, it's just a regular array of numbers.
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