how to convolved two image ?
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SAM
el 13 de Oct. de 2013
Comentada: Image Analyst
el 4 de Nov. de 2015
hi
i want to convolved 2 images.
i tried with conv2 but its not working.
i have 2 images one is Gaussian filterd image and other is sharped image. and i would like to convolved this 2 image. i write a code
im = imread('my original.jpg');
myfilter = fspecial('gaussian',[3 3], 0.5);
a = imfilter(image, myfilter);
b = imsharpen(image,'Radius',0.5);
c=conv2(a,b);
plz help me
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Respuesta aceptada
Image Analyst
el 13 de Oct. de 2013
Editada: Image Analyst
el 13 de Oct. de 2013
You DON'T want to use image as the name of a variable - it's the name of a built in function. Plus you need to convert to double when you call the convolution.
grayImage = imread('Cameraman.tif');
grayImage = double(grayImage);
subplot(2,3,1);
imshow(grayImage, []);
axis on;
title('Original Image', 'FontSize', 15);
myfilter = fspecial('gaussian',[3 3], 0.5);
subplot(2,3,2);
imshow(myfilter, []);
axis on;
title('myFilter', 'FontSize', 15);
a = imfilter(grayImage, myfilter);
subplot(2,3,3);
imshow(a, []);
axis on;
title('a', 'FontSize', 15);
b = imsharpen(grayImage,'Radius',0.5);
subplot(2,3,4);
imshow(b, []);
axis on;
title('b', 'FontSize', 15);
c=conv2(a,b, 'full');
subplot(2,3,5);
imshow(c, []);
title('c', 'FontSize', 15);
axis on;
9 comentarios
Más respuestas (3)
Matt J
el 13 de Oct. de 2013
Editada: Matt J
el 13 de Oct. de 2013
You didn't show your error messages, so I'm just guessing, but this
im = imread('my original.jpg');
should probably be this
image = double(imread('my original.jpg'));
2 comentarios
Image Analyst
el 14 de Oct. de 2013
They both have to be gray scale images, not color. What does this say:
whos a whos b
Mahfuj
el 4 de Nov. de 2015
The code works fine. But how we can reconstruct two images from the convolved image ?
1 comentario
Image Analyst
el 4 de Nov. de 2015
You'd have to know one of them, and then use an "inverse filter".
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