title: Optimally isotropic Laplacian operator.
abstract: Laplacian operators used in the literature for digital image processing are not rotationally invariant. We examine the anisotropy of 3 x 3 Laplacian operators for images quantized in square pixels, and find the operator which has the minimum overall anisotropy.
authors.forename: B
authors.initials: B
authors.lastname: Kamgar-Parsi
authors.forename: B
authors.initials: B
authors.lastname: Kamgar-Parsi
authors.forename: A
authors.initials: A
authors.lastname: Rosenfeld