Crisping

diacrisp(M) Returns matrix M crisped with a 3 x 3 diagonally weighted kernel.

orthocrisp(M) Returns matrix M crisped with a 3 x 3 orthogonally weighted kernel.

orthocrisp5(M) Returns matrix M crisped with a 5 x 5 orthogonally weighted kernel.

unicrisp(M) Returns matrix M crisped with a 3 x 3 uniformly weighted kernel.

Arguments:

• M is an image matrix.