KB1 = conv2(b,Ksigma,'same')
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COULD YOU PLEASE EXPLAIN THIS MATLAB CODE...ESPECIALLY THE USE OF 'same'
KB1 = conv2(b,Ksigma,'same')
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Wayne King
am 26 Jul. 2012
Bearbeitet: Wayne King
am 26 Jul. 2012
When you convolve two matrices (images) of different sizes you get an output image that has row dimension equal to the sum of the two input matrices' row dimensions - 1. The same is true for the column dimension. The column dimension (size) of the output matrix is the sum of the column dimensions of the two input matrices - -1.
In your case, b and Ksigma are your two input matrices.
For example:
X = randn(3,3);
Y = randn(3,2);
Z = conv2(X,Y);
The output has row size 3+3-1 and column size 3+2-1
Using the 'same' option says only return the "central" part of Z in the above that matches the size of the first input image.
Z1 = conv2(X,Y,'same');
The output has the same size as X. If you compare Z1 and Z, you'll see what is in common.
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