Image Processing Toolbox

convn

Perform N-dimensional convolution

Syntax

C = convn(A,B)
C = convn(A,B,shape)

Description

C = convn(A,B) computes the N-dimensional convolution of matrices A and B.

C = convn(A,B,shape) returns a subsection of the N-dimensional convolution, as specified by the shape parameter. shape is a string with one of these values:

• 'full' (the default) returns the full convolution.
• 'same' returns the central part of the convolution of the same size as A.
• 'valid' returns only those parts of the convolution that are computed without zero-padded edges.

Class Support

The input matrices A and B can be of class double or of any integer class. The output matrix C is of class double.

Remarks

convn is a function in MATLAB.

See Also

conv2

convmtx2

corr2