Returns the Convolution of two 2-dimensional arrays.
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Syntax |
Description |
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out = conv2(A,B,mode) |
Computes the convolution of two 2-d dimensional matrices A and B. mode = 'full': computes the full convolution of A and B. 'same': computes the central part of the full convolution, result matrix C is restricted to the size of A, |
Example
In the following example, we computes the 'full' and 'same' convolution results of matrices A and B:
matA = [-5;-4;-3;-2;-1;0;1;2;3;4;5]*pi; matB = [-3,-2,-1,0]; matCFull = conv2(matA, matB, 'full'); matCSame = conv2(matA, matB, 'same'); >?matCFull; result: 47.1239 31.4159 15.708 0 37.6991 25.1327 12.5664 0 28.2743 18.8496 9.42478 0 18.8496 12.5664 6.28319 0 9.42478 6.28319 3.14159 0 0 0 0 0 -9.42478 -6.28319 -3.14159 0 -18.8496 -12.5664 -6.28319 0 -28.2743 -18.8496 -9.42478 0 -37.6991 -25.1327 -12.5664 0 -47.1239 -31.4159 -15.708 0 >?matCSame; result: 15.708 12.5664 9.42478 6.28319 3.14159 0 -3.14159 -6.28319 -9.42478 -12.5664 -15.708
See Also
List of commands , integrate , integrate2 , max , min , interp , find , pinch , round , getdata , sum , length