filter2

2-D digital filter.

📝 Syntax

• Y = filter2(H, X)

• Y = filter2(H, X, shape)

📥 Input argument

• H - coefficients of rational transfer function.

• X - input data.

• shape - 'same' (default), 'valid' or 'full'.

📤 Output argument

• Y - result: 2-D digital filter.

📄 Description

Y = filter2(H, X) applies a finite impulse response filter to a matrix of data X according to coefficients in a matrixH.

💡 Example

A = zeros(10);
A(3:7, 3:7) = ones(5);
H = [1 2 1; 0 0 0; -1 -2 -1];
R = filter2(H, A, 'valid')

🔗 See also

conv2.

🕔 History

Version	📄 Description
1.0.0	initial version