how to make two matrices multiplicable in matlab
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let say i have an image of some dimension and a 3x3 matrix which i want to multiply with all its pixels but how can i achieve it. Rows and cols are not equal?
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Answers (1)
Star Strider
on 16 Feb 2016
You can see if the convn function does what you want. For this, your image has to be in double-precision, so use the double function on it first.
Esample:
Img = randi([0 255], 40, 50, 3);
K33 = rand(3);
Out = convn( Img, K33, 'same');
figure(1)
subplot(1,2,1)
imshow(uint8(Img))
subplot(1,2,2)
imshow(uint8(Out))
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Walter Roberson
on 16 Feb 2016
Is your image 2D (grayscale, black and white) or 3D (RGB) ? If it is 2D then you would use conv2() instead of convn()
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